Article
Engineering, Environmental
Hai Nguyen Tran, Eder C. Lima, Ruey-Shin Juang, Jean-Claude Bollinger, Huan-Ping Chao
Summary: The study investigated the effects of different adsorption isotherm models on thermodynamic parameters, indicating the importance of selecting the appropriate model, unit, and equilibrium constant for calculating thermodynamic parameters. Using commercial activated carbon to adsorb methylene green dye, the study compared various models and found that certain equilibrium constants were more suitable for calculating thermodynamic parameters.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Environmental Sciences
Suyanne Angie Lunelli Bachmann, Tatiana Calvete, Liliana Amaral Feris
Summary: This paper provides a systematic review of caffeine removal by the adsorption process, showing that adsorption is the preferred method for caffeine removal with capacities ranging between 10 and 1000 mg g(-1), and the pseudo-second order and Langmuir isotherm models are the best for fitting experimental data. Future research should focus on mechanistic understanding of adsorption, development of new adsorbents, and consideration of other kinetic models and thermodynamic studies.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Chemistry, Physical
Tao Chen, Tianxing Da, Yan Ma
Summary: This article highlights the ambiguity in calculating adsorption equilibrium constants and thermodynamic parameters, emphasizing the importance of using dimensionless standard equilibrium constants and the influence of standard state selection on the values of ΔG(θ), ΔH-θ, and ΔS-θ. Various methods for calculating equilibrium constants for different isotherm models are provided.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Hla Tun, Chau-Chyun Chen
Summary: The thermodynamic Langmuir isotherm model is effectively utilized to estimate the isosteric heat of adsorption for pure component adsorption, demonstrating accurate results in correlating surface loading and isosteric heat.
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
(2021)
Article
Chemistry, Physical
Ahmed Shahat, Khadiza Tul Kubra, Adel El-marghany
Summary: A high-potential nanoadsorbent was synthesized and characterized for its efficiency in adsorbing triclosan (TCS) from aqueous solutions. The adsorption equilibrium was found to be influenced by the pH of the solution. The adsorption process followed a chemisorption technique, as evidenced by fitting the adsorption isotherm models to a Langmuir model. The synthesized MCNS adsorbent showed remarkable reusability and renderability, making it suitable for water filtration and industrial wastewater treatment.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Environmental Sciences
Masahiro Umehara, Yoshiaki Kumamoto, Kenta Mukai, Akira Isogai
Summary: The adsorption isotherms, kinetics, and thermodynamics of fluoride ions (F-) on FeOOH powders in water were studied. The results showed that FeOOH/TOCN powder is an excellent and efficient F- adsorbent in water. The adsorption of F- on FeOOH initially formed a monolayer through physical adsorption, and the adsorption kinetics followed the pseudo-second-order model. The thermodynamic analysis indicated that the adsorption process was spontaneous in water.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
Zhaosheng Yang, Muhammad Sultan, Kyaw Thu, Takahiko Miyazaki
Summary: In this study, the adsorption isotherms of difluoromethane on activated carbon were measured and a thermodynamic model was proposed to investigate the adsorption potential under supercritical conditions. The developed models were utilized in the equilibrium analysis of an adsorption heat pump to evaluate its performance.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Engineering, Chemical
Usman Hamid, Pradeep Vyawahare, Hla Tun, Chau-Chyun Chen
Summary: This work presents a comprehensive thermodynamic model for both pure component isotherms and mixed-gas adsorption equilibria. The model properly captures the characteristics of mixed-gas adsorption equilibria by considering competitive adsorption on the adsorbent surface and using activity coefficient calculations. The model has been validated and compared, showing higher accuracy and applicability compared to other models.
Article
Chemistry, Physical
Tariq A. Altalhi, Mohamed M. Ibrahim, Gaber A. M. Mersal, M. H. H. Mahmoud, Tushar Kumeria, Mohamed G. El-Desouky, Ashraf A. El-Bindary, Mohamed A. El-Bindary
Summary: In this study, mango seeds activated carbon (MSAC) nanoparticles were prepared with high biocompatibility for potential use as drug carriers. The experimental results showed that the nanocomposite significantly enhanced the adsorption performance of the anti-cancer drug DOX, indicating its potential in drug delivery applications.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Chemistry, Physical
Iilhan Kosan, Gokce Ustunisik, Muserref Onal, Yuksel Sarikaya, Pinar Acar Bozkurt
Summary: This study investigated the surface area and pore volume of bottom ash from an asphaltite deposit in Sirnak, Turkey using nitrogen adsorption/desorption isotherms. The results showed that chemical adsorption was more effective than physical adsorption at different temperatures, with overall and chemical adsorption capacities increasing with temperature while physical adsorption capacity decreased. Thermodynamic evaluation revealed changes in enthalpy and entropy for ammonia adsorption, with a decrease in endothermic chemical adsorption and an increase in exothermic physical adsorption as temperature increased.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Environmental Sciences
Asha Singh, Dinesh Arora, Renu Bala, Anil Khokhar, Sunil Kumar
Summary: In this study, nanoparticles prepared from aquatic plants Salvinia molesta and Typha latifolia were loaded onto powdered form to create nanocomposite adsorbents for wastewater treatment. The adsorption capacity, optimal working conditions, and mechanisms of the novel adsorbents were evaluated.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Polymer Science
Amina Abbaz, Sihem Arris, Gianluca Viscusi, Asma Ayat, Halima Aissaoui, Yasser Boumezough
Summary: Water pollution is a pressing issue that requires immediate attention. This study developed hydrogel beads made from sodium alginate and pomegranate fruit peels for the purpose of adsorbing Safranin O dye in aqueous solutions. The results showed that the synthesized beads had favorable adsorption properties, with maximum adsorption capacity reaching 30.769 mg/g at 293 K. The study also provided insights into the adsorption kinetics, concentration dependence, and thermodynamics of the dye adsorption process.
Article
Engineering, Environmental
Seongbin Ga, Sangwon Lee, Gwanhong Park, Jihan Kim, Matthew Realff, Jay H. Lee
Summary: Recent research focuses on S-shaped adsorption isotherms, proposing a new mathematical model to parameterize such data and reduce computational costs while broadening applications. The model also considers the temperature effect on adsorption behavior, with practical examples provided to illustrate its advantages.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Water Resources
Asha Singh, Sunil Kumar, Vishal Panghal
Summary: This study evaluated the adsorption of Cr6+ from aqueous solution using dead biomass of aquatic plants Salvinia molesta and Typha latifolia. Both adsorbents showed good results for Cr6+ removal under certain conditions, and Fourier transform infrared spectroscopy and scanning electron microscopy were used for characterization and analysis.
APPLIED WATER SCIENCE
(2021)
Article
Chemistry, Physical
Qing Ye, Gongming Qian, Lulu Liu, Fu Yang, Wei Liu
Summary: Hydroxyapatite (HAP) has excellent adsorption ability for Fe(III) and can effectively hinder the migration of Fe(III) under certain conditions. The transformation efficiency of Fe(III) is significantly influenced by the initial pH value and reaction temperature, and the adsorption kinetics of Fe(III) on HAP follows a pseudo second order kinetic model.
Article
Thermodynamics
Fanbao Cheng, Zhaoran Wu, Xiang Sun, Shi Shen, Peng Wu, Weiguo Liu, Bingbing Chen, Xuanji Liu, Yanghui Li
Summary: Methane hydrate, also known as flammable ice, is a clean energy source that has gained global attention as an alternative to traditional fossil fuels. The effective permeability, which is influenced by hydrate saturation and porosity changes, plays a crucial role in determining the gas production rate. This study conducted experiments to measure the effective permeability of hydrate-bearing sediments with varying hydrate saturation. The results showed that the effective permeability decreased with increasing hydrate saturation and effective stress. A formula was proposed to estimate the change in effective permeability during hydrate dissociation, and it was integrated into a thermal-hydraulic model to predict gas production under effective stress. The study provided valuable insights into compression-induced changes in effective permeability and gas/water production during hydrate dissociation.
Article
Thermodynamics
Peng Wu, Yanghui Li, Tao Yu, Zhaoran Wu, Lei Huang, Haijun Wang, Yongchen Song
Summary: In this study, depressurizing dissociation was conducted on a hydrate-bearing sandy specimen using X-ray CT under triaxial stress. The results show that hydrate dissociation starts from the hydrate-gas interface and then results in the formation of cavities among patchy clusters. As the hydrate particle dissociates to a smaller size, the dissociated water gathers on the surface of the hydrate, preventing contact between the hydrate and gas phases. Subsidence is observed even at a low isotropic stress of 1 MPa after hydrate dissociation. Furthermore, the pore system characteristics vary with decreasing hydrate saturation, and the permeability of the hydrate-bearing sediment increases exponentially with decreasing hydrate saturation and is anisotropic due to the inhomogeneity of hydrate dissociation, which can be predicted via electrical conductivity.
Article
Energy & Fuels
Yanghui Li, Jiayu Li, Zeshao You, Peng Wu, Yong Qu, An Zhang, Xiang Sun, Yongchen Song
Summary: Natural gas hydrate is a clean energy source with high density and considerable reserves. This study focuses on the mechanical behavior of cemented hydrate-bearing sediments and reveals the effect of cementation on their properties. Through numerical simulation tests, it is found that cementation improves the strength and stiffness of the sediments, while the presence of hydrates mainly enhances stiffness. The particle-scale investigation shows that increasing confining pressure and hydrate cementation limit slip and rearrangement of sand particles, leading to strengthened strength. Shear band formation is related to cementation failure.
GEOMECHANICS FOR ENERGY AND THE ENVIRONMENT
(2023)
Article
Thermodynamics
Fanbao Cheng, Xiang Sun, Yanghui Li, Xin Ju, Yaobin Yang, Xuanji Liu, Weiguo Liu, Mingjun Yang, Yongchen Song
Summary: Low gas production efficiency and high cost pose significant challenges to the commercial viability of marine gas hydrate exploitation. We propose a joint production approach that focuses on unexplored characteristics such as fluid seepage and local deformation due to interlayer interface. Our research reveals that joint production can surpass commercialization threshold by enabling gas production rates with minimum proportion of free gas exceeding 0.5 during depressurization. The presence of free gas in the reservoir promotes energy recovery and is correlated with permeability. We observe interlayer interference leading to local gas accumulation and heterogeneous permeability change within the reservoir. Geomechanically, maximum displacement occurs in the free gas layer, while simultaneous compaction and dilation are observed in different parts of the wellbore. This study provides crucial insights into the characteristics and challenges of hydrate and shallow gas joint production related to interlayer interference.
Article
Energy & Fuels
Weiguo Liu, Pengyu Chen, Peng Wu, Zeshao You, Lei Wang, Lei Huang, Shuheng Zhang, Tao Yu, Yanghui Li
Summary: The huge reserves of natural gas hydrates in the South China Sea have been proven to have commercial prospects through repeated trial production. It is crucial to understand the mechanical properties of hydrate-bearing sediments to ensure safe drilling of hydrate reservoirs. This study focused on undrained triaxial shear tests on hydrate-bearing clayed-silty sediments, revealing a strain-hardening phenomenon and positive excess pore water pressure during shear. The research also established predicting formulas based on the Mohr-Coulomb criterion, showing that the degree of consolidation affects the failure strength and the Secant Young's modulus E50.
Article
Energy & Fuels
Weiguo Liu, Mengmeng Zhang, Zaixing Liu, Chen Lang, Jingsheng Lu, Qingping Li, Yanghui Li
Summary: Hydrate formation experiments were conducted under the production conditions of the Lingshui gas field using a high-pressure rheometer, and the evolution of viscosity was investigated. The study found that the slurry viscosity changed in stages during hydrate formation, with the aggregation of hydrate particles being the main cause of the significant increase in viscosity. The more severe the temperature and pressure conditions, the faster the hydrate formation and the greater the increase in viscosity. Additionally, a critical hydrate volume fraction was proposed for a sharp increase in viscosity, which can help in predicting hydrate formation and preventing blockages in natural gas production.
Article
Chemistry, Multidisciplinary
He Li, Huiquan Liu, Changrui Shi, Jiawen Qin, Yixuan Fu, Yongchen Song, Yanghui Li, Zheng Ling
Summary: The application-oriented assembly of two-dimensional nanosheets with uniform nanochannels is crucial for fabricating advanced membranes for water treatment. In this study, a simple Meyer rod-coating approach is introduced to continuously fabricate large-size and flat MXene membranes. The fabricated MXene membranes show improved ordering and performance compared to traditional vacuum-assisted filtration methods. The proposed roll-to-roll Meyer rod-coating method also enables the fabrication of MXene-based composites.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Engineering, Marine
Fanbao Cheng, Xiang Sun, Peng Wu, Zhixiang Chen, Tao Yu, Weiguo Liu, Xin Ju, Yanghui Li
Summary: In this study, a high-fidelity, fully coupled thermo-hydro-mechanical-chemical numerical model was developed to investigate the ice generation problem in methane hydrate depressurization. The model considers the water-ice phase change, cryogenic suction, and constitutive relation in hydrate-bearing sediments. The results show that ice formation near the outlet boundary reduces intrinsic permeability and fluid velocity, and increases the bulk modulus of ice-HBS. The developed coupled model proves to be crucial for understanding the effect of ice on hydrate exploitation.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Thermodynamics
Tao Liu, Peng Wu, Zeshao You, Tao Yu, Qi Song, Yuanxin Song, Yanghui Li
Summary: Natural gas hydrate is a new energy source with enormous reserves and high carbon content. However, its exploitation can involve potentially hazardous solid-liquid-gas phase changes. Understanding the deformation behavior of sediment during hydrate dissociation is crucial for predicting the long-term stability of hydrate reservoirs. This study investigated the deformation behavior of remolded cores during thermal dissociation under anisotropic stress states. The results showed that hydrate dissociation can cause significant sediment deformation, with a deformation rate three orders of magnitude larger than before dissociation.
Article
Thermodynamics
Haijun Wang, Weiguo Liu, Peng Wu, Xuelian Pan, Zeshao You, Jingsheng Lu, Yanghui Li
Summary: Accurate understanding of fluid flow patterns in hydrate-bearing sediments is crucial for economic exploitation. This study investigates the effects of hydrate saturation, effective stress, pore pressure, and osmotic pressure on gas flow patterns. The results show that as hydrate saturation increases, gas flow transitions from viscous flow to slip flow, with the slippage effect becoming more pronounced. Effective stress affects gas permeability's sensitivity to osmotic pressure changes, particularly at lower hydrate saturation. Pore pressure has a minimal impact on gas permeability and flow pattern, while reducing osmotic pressure weakens the slippage effect. Finally, a semi-empirical permeability model is developed based on experimental data.
Article
Thermodynamics
Yanghui Li, Le Wang, Yao Xie, Peng Wu, Tao Liu, Lei Huang, Shuheng Zhang, Yongchen Song
Summary: Natural gas hydrate, as a promising new energy, has attracted wide attention in the past decades. Experimental efforts have been made to explore the mechanical characteristics of hydrate-bearing clayey sediment under stable conditions, but few studies focus on its creep characteristics during the dissociation process. This study presents triaxial creep test results of methane hydrate-bearing clayey sediment using the depressurization dissociation method, with methane hydrate-bearing sandy sediments added for comparison. The results show that depressurization has little effect on axial strain but increases volumetric strain and reduces equivalent Poisson's ratio.
Article
Energy & Fuels
Lei Wang, Shi Shen, Zhaoran Wu, Pengyu Chen, Yanghui Li
Summary: This study focuses on the investigation of undrained mechanical characteristics of hydrate-bearing fine-grained soils in order to achieve safe and efficient hydrate exploitation. The results show that temperature has a significant influence on the failure strength of clayey silts, both with and without hydrates. The presence of hydrates also affects the excess pore pressure response and effective stress paths of clayey silts. These findings contribute to a better understanding of the stability of hydrate reservoirs in the South China Sea under environmental changes and thermal injection for hydrate extraction.
Review
Engineering, Chemical
Xiang Sun, Anran Shang, Peng Wu, Tao Liu, Yanghui Li
Summary: CO2 marine geological sequestration is a crucial measure to reduce atmospheric CO2 levels and mitigate the harmful effects of global warming. Compared with traditional terrestrial geological sequestration, CO2 marine geological sequestration has greater potential, a safer distance from aquifers, and stable temperature and pressure conditions, making it safer and more efficient. This paper reviews and evaluates the main CO2 marine geological sequestration technologies and discusses their mechanisms, potential, challenges, and adverse effects on marine environments. The potential development trends in CO2 marine geological technology are also explored.
Article
Engineering, Geological
Zeshao You, Yanghui Li, Haijun Wang, Xiang Sun, Shi Shen, Peng Wu, Yongchen Song
Summary: This paper combines triaxial compression tests and numerical simulations using discrete element method (DEM) to study the mechanical properties of methane hydrate-bearing sands (MHBS) at the particle scale. The study investigates the effects of hydrate saturation, cementation network, and hydrate spatial distribution on the mechanical behavior of MHBS samples. The results provide insights into the unique mechanical properties and failure mechanisms of MHBS.
Article
Thermodynamics
Weiguo Liu, Qi Song, Peng Wu, Tao Liu, Lei Huang, Shuheng Zhang, Yanghui Li
Summary: This study conducted anisotropic consolidated shearing tests to investigate the mechanical properties of hydrate-bearing clayey-silty sediment. The stress-strain curves exhibited a strain-hardening trend and volumetric contraction. The increasing consolidation stress ratio and effective confining pressure led to higher failure strength, while the internal friction angle was proportional and cohesion was inversely proportional to the consolidation stress ratio.
Article
Chemistry, Applied
Maoyi Yi, Jie Li, Mengran Wang, Xinming Fan, Bo Hong, Zhian Zhang, Aonan Wang, Yanqing Lai
Summary: In this study, polyacrylic acid (PAA) was used as a binder for the cathode in all-solid-state batteries. Through H+/Li+ exchange reaction, a uniform PAA-Li coating layer was formed on the cathode surface, improving the stability of the cathodic interface and the crystal structure. The SC-NCM83-PAA cathode exhibited superior cycling performance compared to traditional PVDF binder.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Yonghan Zhou, Zhongfeng Ji, Wenrui Cai, Xuewei He, Ruiying Bao, Xuewei Fu, Wei Yang, Yu Wang
Summary: By learning from the pencil-writing process, a solid-ink rubbing technology (SIR-tech) has been invented to develop durable metallic coatings on diverse substrates. The composite metallic skin by SIR-tech outperforms pure liquid-metal coating and shows great potential for various applications.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Ruiqi Tian, Hehe Zhang, Zeyu Yuan, Yuehua Man, Jianlu Sun, Jianchun Bao, Ming-Sheng Wang, Xiaosi Zhou
Summary: In this study, polypyrrole-encapsulated Sb2WO6 microflowers were synthesized and demonstrated to exhibit excellent potassium storage properties and cycling stability. The improved performance of Sb2WO6@PPy was attributed to the unique microflower structure, enhanced electronic conductivity, and protective PPy coating.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Review
Chemistry, Applied
Longxing Wu, Zhiqiang Lyu, Zebo Huang, Chao Zhang, Changyin Wei
Summary: This paper presents a comprehensive survey on physics-based state of charge (SOC) algorithms applied in advanced battery management system (BMS). It discusses the research progresses of physical SOC estimation methods for lithium-ion batteries and presents future perspectives for this field.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Honggang Huang, Yao Chen, Hui Fu, Cun Chen, Hanjun Li, Zhe Zhang, Feili Lai, Shuxing Bai, Nan Zhang, Tianxi Liu
Summary: The d-d orbital coupling induced by crystal-phase engineering effectively adjusts the electronic structure of electrocatalysts, improving their activity and stability, which is significant for electrocatalyst research.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Quanzhen Sun, Yifan Li, Caixia Zhang, Shunli Du, Weihao Xie, Jionghua Wu, Qiao Zheng, Hui Deng, Shuying Cheng
Summary: In this study, indium (In) ions were introduced into flexible Cu2ZnSn(S,Se)(4) (CZTSSe) solar cells to modify the back interface and passivate deep level defects in CZTSSe bulk. The results showed that In doping effectively inhibited the formation of secondary phase and V-Sn defects, decreased the barrier height at the back interface, passivated deep level defects in CZTSSe bulk, increased carrier concentration, and significantly reduced the V-OC deficit. Eventually, a flexible CZTSSe solar cell with a power conversion efficiency of 10.01% was achieved. This synergistic strategy of interface modification and bulk defects passivation through In incorporation provides a new approach for fabricating efficient flexible kesterite-based solar cells.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Negah Hashemi, Jafar Hussain Shah, Cejun Hu, Subhajit Nandy, Pavlo Aleshkevych, Sumbal Farid, Keun Hwa Chae, Wei Xie, Taifeng Liu, Junhu Wang, Mohammad Mahdi Najafpour
Summary: This study investigates the effects of Fe on the oxygen-evolution reaction (OER) in the presence of Au. The study identifies two distinct areas of OER associated with Fe and Au sites at different overpotentials. Various factors were varied to observe the behaviors of FeOxHy/Au during OER. The study reveals strong electronic interaction between Fe and Au, and proposes a lattice OER mechanism based on FeOxHy.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Yingshi Su, Yonghui Cheng, Zhen Li, Yanjia Cui, Caili Yang, Ziyi Zhong, Yibing Song, Gongwei Wang, Lin Zhuang
Summary: This study systematically investigates the key roles of Nafion on Cu nanoparticles electrocatalyst for CO2RR. The Nafion modifier suppresses the hydrogen evolution reaction, increases CO2 concentration and mass transfer process, and activates CO2 molecule to enhance C2 product generation. As a result, the selectivity of the hydrogen evolution reaction is reduced and the efficiency of C2 products is significantly improved.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Daijie Deng, Honghui Zhang, Jianchun Wu, Xing Tang, Min Ling, Sihua Dong, Li Xu, Henan Li, Huaming Li
Summary: By doping sulfur into vanadium nitride, the S-VN/Co/NS-MC catalyst exhibits enhanced oxygen reduction reaction activity and catalytic performance. When applied in liquid and flexible ZABs, it shows higher power density, specific capacity, and cycling stability.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Review
Chemistry, Applied
Yi Li, Fei Zhang
Summary: Self-assembly of metal halide perovskite nanocrystals holds significant application value in the fields of display, detector, and solar cell due to their unique collective properties. This review covers the driving forces, commonly used methods, and different self-assembly structures of perovskite nanocrystals. Additionally, it summarizes the collective optoelectronic properties and application areas of perovskite superlattice structures, and presents an outlook on potential issues and future challenges in the development of perovskite nanocrystals.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Anki Reddy Mule, Bhimanaboina Ramulu, Shaik Junied Arbaz, Anand Kurakula, Jae Su Yu
Summary: Direct growth of redox-active noble metals and rational design of multifunctional electrochemical active materials play crucial roles in developing novel electrode materials for energy storage devices. In this regard, silver (Ag) has attracted great attention in the design of efficient electrodes. The construction of multifaceted heterostructure cobalt-iron hydroxide (CFOH) nanowires (NWs)@nickel cobalt manganese hydroxides and/or hydrate (NCMOH) nanosheets (NSs) on the Ag-deposited nickel foam and carbon cloth (i.e., Ag/ NF and Ag/CC) substrates is reported. The as-fabricated Ag@CFOH@NCMOH/NF electrode delivered superior areal capacity value of 2081.9 μA h cm-2 at 5 mA cm-2. Moreover, as-assembled hybrid cell based on NF (HC/NF) device exhibited remarkable areal capacity value of 1.82 mA h cm-2 at 5 mA cm-2 with excellent rate capability of 74.77% even at 70 mA cm-2. Furthermore, HC/NF device achieved maximum energy and power densities of 1.39 mW h cm-2 and 42.35 mW cm-2, respectively. To verify practical applicability, both devices were also tested to serve as a self-charging station for various portable electronic devices.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Zanling Huang, Shuqi Zhu, Yuan Duan, Chaoran Pi, Xuming Zhang, Abebe Reda Woldu, Jing-Xin Jian, Paul K. Chu, Qing-Xiao Tong, Liangsheng Hu, Xiangdong Yao
Summary: In this study, it was found that Ni sites act as a host to attract Fe(III) to form Fe(Ni)(III) binary centers, which promote the oxygen evolution reaction (OER) activity and stability by cyclical formation of intermediates. Additionally, other ions can also catalyze the OER process on different electrodes.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Jie Zeng, Jian Bao, Ya Zhang, Xun-Lu Li, Cui Ma, Rui-Jie Luo, Chong-Yu Du, Xuan Xu, Zhe Mei, Zhe Qian, Yong-Ning Zhou
Summary: The balance between cationic redox and oxygen redox is crucial for achieving high energy density and cycle stability in sodium batteries. This study demonstrates the reversible Mn2+/Mn4+ redox in a P3-Na0.65Li0.2Co0.05Mn0.75O2 cathode material through Co substitution, effectively suppressing the contribution of oxygen redox and improving structure stability.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Daniela M. Josepetti, Bianca P. Sousa, Simone A. J. Rodrigues, Renato G. Freitas, Gustavo Doubek
Summary: Lithium-oxygen batteries have high energy density potential but face challenges in achieving high cyclability. This study used operando Raman experiments and electrochemical impedance spectroscopy to evaluate the initial discharge processes in porous carbon electrodes. The results indicate that the reaction occurs at the Li2O2 surface and the growth of Li2O2 forms a more compact and homogeneous structure.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Ziqi Zhang, Jinyun Xu, Yu Zhang, Liping Zhao, Ming Li, Guoqiang Zhong, Di Zhao, Minjing Li, Xudong Hu, Wenju Zhu, Chunming Zheng, Xiaohong Sun
Summary: This paper explores the challenge of increasing global CO2 emissions and highlights the role of porous metal oxide materials in electrocatalytic reduction of CO2 (CO2RR). Porous metal oxides offer high surface area and tunability for optimizing CO2RR reaction mechanisms.
JOURNAL OF ENERGY CHEMISTRY
(2024)
