Article
Energy & Fuels
Dazhi Zhang, Peng Yang, Yixin Zhang, Honglai Liu, Yunhui Xu, Jianjun Wu, Peipei Li
Summary: Coupling carbon materials and metal oxide has been proven effective in promoting the energy storage performance of supercapacitor electrode materials. In this study, a novel pompon-like activated carbon/manganese dioxide nanosheet composite was successfully prepared via a facile and cost-efficient strategy. The as-prepared composite exhibited excellent electrochemical performance and showed great potential for practical applications in supercapacitors.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Pasinee Panith, Pichitchai Butnoi, Varol Intasanta
Summary: This study introduces a novel hybrid faradaic structure to improve the performance of biomass-derived carbon-based supercapacitors (SCs). By carefully designing the organic-inorganic hybrid composition, nanostructures, porosity, surface area, and active redox reactions, pure lignin carbon nanofibers (LCNFs) incorporated with flower-like, multi-metal, and intrinsically capacitive nanoparticles were fabricated as flexible and binder-free electrodes for SCs. The experimental results demonstrate that the specific capacitance of the SCs can be significantly increased and the cycling stability can be improved by adding nanoparticles and using a mixed electrolyte.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Paper & Wood
Jincy Parayangattil Jyothibasu, Ruei-Hong Wang, Kenneth Ong, Juping Hillary Lin Ong, Rong-Ho Lee
Summary: Nanostructured manganese dioxide (MnO2) was homogeneously deposited on a regenerated cellulose/functionalized CNT (f-CNT) matrix through a direct redox reaction between potassium permanganate and carbon nanotubes (CNTs) in an acidic medium. The resulting cellulose/f-CNT/MnO2 composite films showed outstanding electrochemical performance as freestanding electrodes for supercapacitors, with a maximal areal capacitance of 7956 mF cm(-2) achieved for a high MnO2 content composite. The symmetric supercapacitor assembled using the cellulose/f-CNT/MnO2 composite film exhibited high capacitance, energy density, and power density. The simple and environmentally friendly synthetic procedure can be readily scaled up for bulk synthesis.
Article
Materials Science, Multidisciplinary
Feng Shao, Yaqiong Niu, Bin Li, Gang Li, Zhi Yang, Yanjie Su, Yafei Zhang, Nantao Hu
Summary: Graphene/polyaniline composite with binary nanosheet frameworks show promise as high-capacity flexible electrodes for supercapacitors. The novel morphology of polyaniline nanosheets, synthesized without additional template material, demonstrate excellent pseudocapacitance properties. The stacked framework of polyaniline nanosheets and reduced graphene oxide can achieve high specific areal capacitance even with high weight content.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Biny R. Wiston, Kasinathan Dhivyaprasath, Shivangi Tewatia, M. Ashok
Summary: In this study, an optimized composite electroactive material was developed by adjusting the ratio of nickel and manganese, demonstrating improved electrochemical performance and high-rate capability. The material exhibited a high specific capacity and excellent cycle life under high-rate charging and discharging, indicating its potential as an electrode material for supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Biochemistry & Molecular Biology
Wenjuan Yang, Wenyu Liang, Igor Zhitomirsky
Summary: This article presents the use of rhamnolipids (RL) as efficient natural biosurfactants for the fabrication of nanocomposite MnO2-carbon nanotube electrodes for supercapacitors. The RL act as co-dispersants for MnO2 and carbon nanotubes, enabling efficient mixing and resulting in advanced capacitive properties. The approach offers advantages such as simplicity and the use of a biocompatible RL biosurfactant.
Article
Energy & Fuels
Erman Taer, Apriwandi, Windasari, Rika Taslim, Mohamad Deraman
Summary: Biomass-based activated carbon with 2D nano-structure, 3D hierarchical porous, and self-/co-doping active heteroatoms has been proven to be an excellent sustainable electrode material for high-energy supercapacitors. This study aimed to obtain activated carbon with these features from Indonesian laurel aromatic evergreen biomass and optimize its structure through high-temperature pyrolysis. The prepared ILAE carbon material exhibited a 2D gauze-like nanosheet structure and a hierarchical pore network, leading to excellent electrochemical performance in symmetrical supercapacitors.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Nanoscience & Nanotechnology
Lin Shan, Yu Zhang, Ying Xu, Minjie Gao, Ting Xu, Chuanling Si
Summary: In this study, a supercapacitor electrode with high-rate performance was successfully constructed using readily available cedar branches through carbonization and activation. The carbonization temperature and process were optimized, resulting in a high specific capacitance and good rate capability. After compounding with MnO2, the composite electrode exhibited even higher specific capacitance. The assembled symmetric supercapacitor showed a high energy density, offering an idea for developing clean and efficient new energy technologies with high-rate performance.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Energy & Fuels
Erman Taer, Apriwandi Apriwandi, Agustino Agustino, Mega Ratna Dewi, Rika Taslim
Summary: This study successfully developed a new type of biomass-based porous activated carbon nanostructures electrode, which possesses high specific surface area and excellent electrochemical performance.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Hanxue Zhao, Kaishuai Yang, Kailan Zhu, Mai Li, Wendong Xu, Waqar ul Hasan, Jiale Wang, Qinglin Deng, Jun Yu, Zhongyi Sun, Paul K. Chu
Summary: In this study, the surface activity of the electrode is enhanced by combining gold particles and MOF-derived CPCN with α-MnO2. The Au-MnO2/CPCN@CC electrode exhibits higher specific capacity and better cycling stability in 1 M Na2SO4. The use of Au nanoparticles and CPCN improves the surface electron transport of MnO2, resulting in superior performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Saima G. Sayyed, Habib M. Pathan, Arif Shaikh, Shoyebmohamad F. Shaikh, Abdullah M. Al-Enizi
Summary: The study presents a simple, effective, and inexpensive approach to deposit thin film of manganese oxide on a flexible stainless steel substrate for supercapacitor application. The impact of heat treatment and different electrolytes on the electrochemical performance of the electrode is investigated. The material demonstrates a large pseudo-capacitance and stability in 1M Na2SO4 electrolyte, making it a promising candidate for supercapacitor electrodes.
JOURNAL OF ENERGY STORAGE
(2021)
Review
Chemistry, Physical
Jiaye Zhu, Dandan Zhang, Zichun Zhu, Qingsheng Wu, Jiangfeng Li
Summary: This review discusses the synthesis, electrochemical properties, and development prospect of MnO2 and MnO2-based composites with various structures.
Article
Chemistry, Physical
Wenyu Liang, Igor Zhitomirsky
Summary: MXenes, such as Ti3C2Tx, are promising materials for supercapacitor electrodes. Colloidal techniques were used in the fabrication of Ti3C2Tx-Fe3O4-CNT electrodes with high areal capacitance. Celestine blue played a crucial role in improving the capacitive performance by serving as a co-dispersant for individual materials.
Article
Engineering, Electrical & Electronic
Mahanim Sarif, Zulkarnain Zainal, Mohd Zobir Hussein, Mohd Haniff Wahid, Noor Nazihah Bahrudin
Summary: A novel supercapacitor electrode was prepared by polymerizing Mn2O3 on MPC film, showing a 3.5 times improvement in specific capacitance compared to standalone MPC film, with approximately 71% capacitance retention after 1000 cycles.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Physical
Donghua Jia, Feng Zheng, Yingying Niu, Xiaodong Mao, Yue Yang, Qiang Zhen, Peng Li, Yi Yu, Shaowei Zhang
Summary: V2O5 nanobelt arrays were fabricated on Ni foam using a hydrothermal route, and NiO nanosheet arrays were then grown on VNBAs using a chemical bath deposition approach to form VNBAs/NNSAs composite. The composite showed excellent electrochemical performance with high specific capacity, cycling stability, and rapid ion diffusivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Electrochemistry
Fujuan Wang, Tianyun Zhang, Fen Ren
Summary: This study investigates the sodium ions storage behaviors in porous carbon materials by modifying the bacterial cellulose precursor with sulfuric acid and two-step carbonization. The changes in structural parameters help improve the plateau and slope capacity of hard carbon. The results show that pre-carbonization of bacterial cellulose precursors via H2SO4 treatment introduces oxygen groups, which benefits the enhancement of slope and plateau capacity. The obtained bacterial cellulose-based carbon material exhibits good discharging capacity and enhanced plateau-slope capacity.
ELECTROCHIMICA ACTA
(2023)
Article
Electrochemistry
Jian-Fei Gao, Jing-Feng Hou, Ling-Bin Kong
Summary: Pseudocapacitive behavior is a highly studied topic in the field of electrochemistry. Accurately distinguishing between capacitive, pseudocapacitive, and battery behavior is a challenging task. Moreover, the discovery of non-Faraday capacitive charge storage mechanism in non-carbon-based materials has posed difficulties in defining the electrochemical behavior of newly discovered materials. This study presents the first report on the pseudocapacitance behavior of sanmar-tinite (ZnWO4), showing ideal rectangular cyclic voltammetry curves and isosceles triangle galvanostatic charge/discharge curves. The calculated value of b, 0.88, further confirms that the kinetic process is controlled by surface capacitance.
ELECTROCHIMICA ACTA
(2023)
Article
Electrochemistry
Bei Zhao, Mao-Cheng Liu, Dong-Ting Zhang, Ya-Qin Wang, Hao Chen, Ling-Bin Kong, Cheng-Gong Chang
Summary: Ti3C2-MXene has been widely studied for energy storage applications due to its adjustable surface chemistry, excellent electronic conductivity, and unique layered structure. However, the diffusion kinetics of alkali metal ions in Ti3C2 is limited by the interlayer spacing. In this study, a diphenic acid (DHA) molecular welding strategy is used to prepare DHA-Ti3C2 with enlarged interlayer spacing, improving ion diffusion rate and structure stability. DHA-Ti3C2 exhibits high rate capability and long-term cycle stability with specific capacities of 444 mAh g(-1) and 156 mAh g(-1) after 200 cycles and 1700 cycles in Li+/Na+ batteries, respectively. This study provides a strategy to efficiently tune the layered structure of 2D materials for optimal alkali metal ions storage performance.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Analytical
Zheng-Hua He, Jian-Fei Gao, Ling -Bin Kong
Summary: Supercapacitors (SC) and hydrogen evolution reactions (HER) play important roles in electrochemical storage and conversion. Developing low-cost and high-performance materials for SCs and HER devices is crucial. Nickel-based materials have advantages as both positive materials for SCs and hydrogen evolution catalysts. In this study, NiF2 material with rutile phase structure was prepared and showed excellent electrochemical performance, including high specific capacitance and good rate performance in alkaline electrolyte, and stable hydrogen evolution at low overpotential in acidic electrolyte. Therefore, NiF2 holds great promise as a future electrode material for SCs and HER.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Yongtao Tan, Yuling Zhu, Haibo Li
Summary: The Mo2N nanoparticles embedded in N, O co-doped carbon sheets composite (Mo2NNPs/NOCS) is a promising electrode material for supercapacitors. These nanoparticles are fabricated by in-situ growth on the surface of self-sacrifice C3N4. The optimized material shows a maximum specific capacitance of 294 F g-1 at 0.5 A g-1. Moreover, when assembled with a commercial activated carbon YP50 as a positive electrode, the supercapacitor device achieves a high energy density of 13.6 Wh kg-1 in an acid electrolyte.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Meng-Xin Bai, Zheng-Hua He, Jing-Feng Hou, Jian-Fei Gao, Ling-Bin Kong
Summary: In this study, a solvothermal method was used to prepare curled hydrated VO2(B) nanosheets with modified morphology and structure. The VO2(B) exhibited high specific capacity and retention rate, as well as impressive energy and power density. Such excellent performance was attributed to the suitable nanostructure, high capacitance-controlled kinetic behavior, fast Zn2+ diffusion, and sustained crystal water structure. The energy storage mechanism of the material was H+/Zn2+ co-insertion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Meimei Yuan, Hongjun Liu, Fen Ran
Summary: This article highlights the key kinetically limiting factors in the fast-charging process from the perspective of cathodic materials and describes the currently reported fast-charging cathode materials with improved rapid ions diffusion capability and fast reaction kinetics. It discusses a series of strategies, including nanostructure, doping, and multiple-system, while emphasizing the importance of pseudocapacitive contribution in constructing fast-charging lithium-ion batteries and sodium-ion batteries.
Article
Chemistry, Multidisciplinary
Guanghua Cao, Lei Zhao, Xiwei Ji, Yuanyou Peng, Meimei Yu, Xiangya Wang, Xiangye Li, Fen Ran
Summary: In this study, a gelatin-ZnSO4 hydrogel electrolyte membrane is fabricated, which exhibits high mechanical strength and ionic conductivity. The application of this electrolyte membrane in supercapacitors and zinc-ion batteries demonstrates its excellent mechanical and electrochemical performance for flexible energy storage devices.
Article
Chemistry, Physical
Yongtao Tan, Yuling Zhu, Haibo Li
Summary: The crystal structure has a significant impact on the electrochemical performance. In this study, the molybdenum carbide/carbon hollow microtube (MoC/CHMT) composite was synthesized by carbonating polydopamine-encapsulated Mo-MOF material. The crystal structure of molybdenum carbide in the composite was controlled by adjusting the mass of dopamine during polymerization. The optimized MoC/CHMT exhibited hollow microtubes morphology with small molybdenum carbide nanoparticles on the surface, and it achieved a high specific capacitance of 513.5 F g(-1) at a current density of 0.5 A g(-1). The YP50//MoC/CHMT device showed a maximum energy density of 17.5 Wh kg(-1).
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Qiang-Hong Wu, Huan-Zhong Zeng, You-Zhi Wu, Fen Ran
Summary: A new bioabsorbable method for preparing molybdenum nitride combined with porous carbon materials has been developed in this study. The obtained composite material exhibits good electrochemical performance as anode material in supercapacitors and batteries.
Article
Chemistry, Multidisciplinary
Zu-Tao Pan, Zheng-Hua He, Jing-Feng Hou, Ling-Bin Kong
Summary: Prussian blue analogs, specifically CoHCF and FeHCF, have different performance as sodium-ion battery cathode materials. The core-shell structure of CoHCF@FeHCF improves rate performance and cycling stability compared to unmodified CoHCF.
Article
Chemistry, Multidisciplinary
Hao Dang, Lu Wang, Yuanyou Peng, Tianqi He, Fen Ran
Summary: Vanadium nitride quantum dot composites are prepared by in situ replacement using a ZIF-8 dodecahedral structure, resulting in a material with good electrochemical performance and enhanced cycling stability.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Wen-Wu Liu, Cai-Xia Li, Chong-Yang Cui, Guang-Long Liu, Yi-Xiao Lei, Ya-Wen Zheng, Shi-Ji Da, Zhi-Qiang Xu, Rong Zou, Ling-Bin Kong, Fen Ran
Summary: This study demonstrates the use of a soft-structured long-chain 2D pentanamine iodide (PI) to improve the quality and stability of carbon-based perovskite solar cells (PSCs). The PI effectively passivates defects at grain boundaries and reduces residual stress during high temperature annealing. As a result, the photoelectric conversion efficiency and operational stability of PSCs are significantly enhanced.
Article
Chemistry, Physical
Rui Liu, Huanzhong Zeng, Yuanyou Peng, Yumeng Wang, Fen Ran
Summary: The diffusion rate of ions in the anode materials is crucial for the fast-charging performance of lithium and sodium-ion batteries. By designing MoS2/rGO composite materials with pinned structures, the ion diffusion rate and capacity can be improved, resulting in high capacity and stability for fast-charging.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Xiangya Wang, Weijie Zhang, Qi Zhou, Fen Ran
Summary: This study introduces a novel all-in-one self-powered electronic stimulated wound dressing, which integrates a supercapacitor with a sodium hyaluronate based hydrogel. The wound dressing is able to perform electrical stimulation without the need for an external power supply, enabling patients to receive treatment anywhere and anytime. The introduction of sodium hyaluronate promotes cell proliferation and accelerates wound healing, while also improving the electrochemical performance of the supercapacitor. This all-in-one wound dressing has excellent mechanical properties, high water absorption capacity, and good biocompatibility, meeting the practical requirements for clinical wound dressings.
CHEMICAL ENGINEERING JOURNAL
(2023)
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)
