Article
Energy & Fuels
Shashank Sundriyal, Vishal Shrivastav, Ashwinder Kaur, Mansi, Akash Deep, Sanjay R. Dhakate
Summary: Biowastes derived carbon based materials have attracted attention for their extraordinary surface and conductive characteristics, making them suitable electrode materials for supercapacitors. The study of surface and diffusion charge contribution offers new directions to enhance the electrochemical performance of supercapacitor electrodes.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Multidisciplinary
Raji Atchudan, Thomas Nesakumar Jebakumar Immanuel Edison, Mani Shanmugam, Suguna Perumal, Rajangam Vinodh, Thirunavukkarasu Somanathan, Yong Rok Lee
Summary: A unique heteroatom-doped porous carbonaceous material was successfully synthesized from dwarf banana peel for supercapacitor electrodes, offering high surface area and excellent electrochemical performance, suitable for renewable energy storage applications.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Energy & Fuels
Sarika B. Dhavale, Vithoba L. Patil, Satyajeet S. Patil, Rushikesh P. Dhavale, Hyung-Ho Park, Taehee Kim, Pramod S. Patil
Summary: This study successfully investigated the electrochemical performance of Nickel cobaltite/activated carbon composite thin films and demonstrated their potential application in supercapacitors. By preparing activated carbon from sustainable and low-cost bio waste precursor and incorporating nickel cobaltite nanostructures, the developed composite electrode showed excellent specific capacitance, energy density, and cyclic stability.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Yafen Tian, Xiangyu Zhu, Muhammad Abbas, Daniel W. Tague, Melissa A. Wunch, John P. Ferraris, Kenneth J. Balkus
Summary: Hierarchical porous carbon nanosheets were fabricated using a one-step CVD approach on Mg(OH)2 substrates, exhibiting high surface areas and excellent electrochemical performance, with notable stability.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Electrochemistry
Shrabani De, Chandan Kumar Maity, Myung Jong Kim, Ganesh Chandra Nayak
Summary: A facile hydrothermal growth and intercalation of tin(IV) selenide (SnSe2) over the interface of activated porous carbon (APC)/Ti3C2Tx (MXene) were studied as a positive electrode for asymmetric flexible supercapacitor. SnSe2 plays a crucial role in enhancing the electrode capacitance. The best electrochemical performance is obtained with APC/Ti3C2Tx/SnSe2, which exhibits outstanding specific capacitance in a three-electrode setup and superior supercapacitive performances in ionic electrolyte.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Yawei Wang, Wenjing Lu, Xiangkai Xu, Fenzhi Pang, Xian Feng, Xinsheng Zhang, Yang Zeng, Zhipeng Yang, Ruirui Wang, Pinghua Yang, Liang Chen
Summary: Hierarchical porous carbons (HPCs) doped with nitrogen, oxygen, and sulfur were prepared from durian kernel through one-step KOH activation. The HPCs exhibited a cheese-like morphology with a hierarchical porous structure, large specific surface area, and high multi-doped content, leading to excellent performance as electrode materials in supercapacitors and lithium-ion batteries.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xolile Fuku, Mmalewane Modibedi, Andile Mkhohlakali, Mkhulu Mathe
Summary: The combination of metal oxides and activated carbon in Pd-AC/Bi2O3/CuO catalyst shows enhanced catalytic behavior and activity for ethanol electro-oxidation and energy storage. The catalyst exhibits high current densities, capacitive j, good electrochemical reversibility, and quick delivery of stored charges, indicating superior energy delivery capability.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Green & Sustainable Science & Technology
Junfeng Miao, Zuozhao Zhai, Shasha Wang, Yuelong Xu, Shichao Du, Xiaolei Wang, Xiaoxi Dong, Bin Ren, Zhenfa Liu
Summary: The hierarchical porous nitrogen-doped two-dimensional carbon (HNGC) was successfully prepared by calcinating magnesium sulfate and self-synthesized nitrogen-doped two-dimensional graphene-like carbon. The HNGC exhibited excellent electrochemical performance and photocatalytic degradation ability.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Physical
Ganesh Dhakal, Deivasigamani Ranjith Kumar, Sumanta Sahoo, Jae-Jin Shim
Summary: Litchi seeds, a type of biowaste, can take more than two years to naturally decompose. Therefore, it is important to find a way to transform them into valuable materials. Activated carbon is a promising candidate for this purpose and has been successfully used to create high-performance supercapacitors. The study demonstrates the potential of utilizing litchi seeds as a sustainable resource for energy storage materials.
Article
Chemistry, Multidisciplinary
Asmita Shah, Harish Singh, Pongthep Prajongtat, Manish Chandra Joshi, Supa Hannongbua, Nattaporn Chattham, Young-Ki Kim, Sandeep Kumar, Dharmendra Pratap Singh
Summary: Researchers have converted chestnut waste into reduced graphene oxide and nitrogen-doped reduced graphene oxide with pyridinic-N dominance. The synthesized catalyst exhibits excellent oxygen reduction reaction activity, surpassing that of the commercial Pt/C catalyst, and shows higher methanol tolerance.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Wenbin Zhang, Bei Liu, Mei Yang, Yijiang Liu, Huaming Li, Pingle Liu
Summary: Utilizing stem pith of helianthus annuus as precursor, a three-dimensional porous carbon sponge with unique structure and high performance was prepared for application in supercapacitors, demonstrating high specific capacitance and stability.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Energy & Fuels
Abdalazeez Ismail Mohamed Albashir, Wen Shang, Mohammed Kamal Hadi, Junlei Zhang, Tianyun Zhang, Fen Ran
Summary: The study introduced gold nanoparticles into porous carbon materials to enhance the energy density of supercapacitors. The composite materials showed a high specific capacitance and specific energy, indicating their promising potential for use in supercapacitors or other energy storage devices.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Engineering, Environmental
Weimin Chen, Daotong Zhang, Kai Yang, Min Luo, Pei Yang, Xiaoyan Zhou
Summary: A porous, conductive, and flexible MXene/cellulose nanofiber/PC hybrid film with strong interfacial interactions is prepared, providing high mechanical properties and large charge storage capacity. This film is used as a free-standing electrode to fabricate a high-performance quasi-solid-state supercapacitor, demonstrating ultrathin thickness, high flexibility, and large areal capacitance.
CHEMICAL ENGINEERING JOURNAL
(2021)
Review
Chemistry, Inorganic & Nuclear
Akzhibek Zekenova, Meruyert Nazhipkyzy, Wanlu Li, Akmaral Kalybayeva, Guldarikha Zhumanova, Olga Zubova
Summary: This review discusses the methods and characteristics of biowaste-derived activated carbon and carbon-manganese oxide-based supercapacitor electrodes.
Article
Energy & Fuels
Yue Yang, Zhuopei He, Shaolei Wang, Heng-guo Wang, Guangshan Zhu
Summary: This study prepared N-doped hierarchically porous carbon using NH3 activation and optimized the catalytic performance by tuning key factors such as pyrolysis temperature and building blocks. The obtained Py-NHCP-1000 catalyst showed outstanding performance, positive shift for E-1/2 relative to commercial Pt/C, good durability, and affordability for the oxygen reduction reaction. This work opens up a pathway for designing and preparing affordable and high-efficiency metal-free electrocatalysts from low-cost and scalable HCPs.
Article
Electrochemistry
Vinayak Adimule, Vinay S. Bhat, Rajeev Joshi, Sheetal Batakurki, Gurumurthy Hegde, Basappa C. Yallur
Summary: In this study, samarium nanoparticles were synthesized and anchored onto the surface of a CuO:CoO nanostructure. The resulting nanostructures were characterized and investigated for their electrical and supercapacitive behavior. The exceptional properties of the Sm-x CuO:CoO nanostructures were attributed to the synergy of high charge mobility of the samarium nanoparticles, leading to significant variation in dielectric permittivity, current-voltage response, and capacitance-voltage behavior.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2023)
Review
Chemistry, Physical
Apoorva Shetty, Vandana Molahalli, Aman Sharma, Gurumurthy Hegde
Summary: Biomass-derived carbons have unique physical and chemical properties, such as tunable surface, chemical inertness, and hydrophobicity, which make them ideal candidates to be used as heterogeneous catalysts and catalytic supports. The wide range of reactions that can be compatible with biomass-derived carbon materials includes organic transformations, electrocatalytic reactions, and photocatalytic reactions. This review discusses the uses of biomass-derived materials in the field of heterogeneous catalysis, highlighting the importance and unique properties of carbon materials derived from biomass as potential catalysts.
Article
Energy & Fuels
Vinayak Adimule, Sheetal Batakurki, Vinay S. Bhat, Basappa C. Yallur, Gurumurthy Hegde, Chinna Bathula
Summary: Hybrid nanostructures with enhanced storage and electrical properties were achieved by decorating Sr2+ nanoparticles (NPs) on Sm2O3@CoO nanostructures (NS) using chemical precipitation.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Soon Poh Lee, Gomaa A. M. Ali, Mohammed A. Assiri, Kien Voon Kong, Ellie Yi Lih Teo, Kwok Feng Chong
Summary: This study demonstrates the reduction and functionalization of graphene oxide (GO) into phenothiazine (PTZ)-reduced graphene oxide (PTZ-rGO) aerogel. PTZ is excited by UV light to reduce GO through electron transfer, while being oxidized and functionalized onto rGO simultaneously to form PTZ-rGO aerogel. The incorporation of PTZ onto rGO sheets improves the electrochemical active surface area and diffusion behavior, leading to a high charge storage capacity of 235.5 F g-1 at 0.5 A g-1 and a stable capacitance retention of 92% after 10,000 cycles. This makes PTZ-rGO an excellent electrode material for supercapacitor fabrication.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Osamu Tsutsumi, Makoto Nakano, Gurumurthy Hegde, Lachezar Komitov
Summary: It was discovered that the addition of a chiral photochromic azo dopant to an achiral liquid crystal leads to a reversal of spontaneous and induced polarization in the tilted smectic C* phase and the orthogonal smectic A phase, respectively, under UV light illumination. This sign reversal effect, attributed to the different dipole moment components of the trans- and cis-isomers of the photochromic azo dopant, shows promising potential for applications in light-controlled photonic liquid crystal devices.
Review
Chemistry, Multidisciplinary
Laila El Hanafi, Ibrahim Mssillou, Houria Nekhla, Aymane Bessi, Meryem Bakour, Hassan Laaroussi, Zineb Ben Khadda, Chaimae Slimani, John P. Giesy, Hassane Greche, Gomaa A. M. Ali, Mourad A. M. Aboul-Soud
Summary: Recently, processed foods have become an important part of human eating habits. Sesame seeds, known for their rich phytochemical composition, are economically important in many countries. Dehulling and roasting, two common processing techniques, have different effects on the nutritional quality of sesame seeds.
JOURNAL OF CHEMISTRY
(2023)
Article
Engineering, Environmental
Mohammad R. Thalji, Gomaa A. M. Ali, Jae-Jin Shim, Kwok Feng Chong
Summary: A metal-doping strategy is employed to produce cobalt-doped tungsten suboxide (Co-doped W18O49) with improved ion storage performance for supercapacitor electrodes. The distortion of the W18O49 structure caused by Co doping leads to a larger amorphous area, resulting in more oxygen vacancies and enhanced ion diffusion. The Co-doped W18O49/CC electrode exhibits a specific capacity of 475 C g-1 (792 F g-1) and the assembled supercapacitor device achieves a high energy density of 35.0 Wh kg-1.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Physical
Aveen Mustafa Mohammed, Mohammad R. Thalji, Suhad A. Yasin, Jae-Jin Shim, Kwok Feng Chong, Alexander A. Guda, Gomaa A. M. Ali
Summary: The accumulation of heavy metals in aquatic environments is a significant environmental threat. Adsorption using nanofiber has been proven to be the most effective approach for their removal, providing a potential solution for various applications.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
B. S. Ranjitha, D. Sandhya Kumari, Apoorva Shetty, G. Shanker, Mohamed Alaasar, Rami Pashameah, Gurumurthy Hegde
Summary: Three new series of photo responsive dimers with different terminal functional groups and variable aliphatic spacers were synthesized and investigated. The molecular structures were proved using spectroscopic techniques and their liquid crystal self-assembly was characterized. The photo-switching behavior of the materials in solution was also investigated. Results showed that the materials exhibited interesting photo-switching properties and potential for optical storage devices.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Materials Science, Multidisciplinary
Rijo Rajeev, Sk Safikul Islam, Anitha Varghese, Gurumurthy Hegde, Suryasarathi Bose
Summary: In this study, a facile and selective electrochemical sensor was developed for the sensing of guanosine. The sensor utilized a unique porous structure and ordered framework, enabling linear detection of guanosine concentration in the range of 0.123-720 μM under specific conditions.
MATERIALS CHEMISTRY AND PHYSICS
(2024)
Editorial Material
Nanoscience & Nanotechnology
Paola De Padova, Gurumurthy Hegde
NANOMATERIALS AND NANOTECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Kiran Bijapur, Vandana Molahalli, Apoorva Shetty, Arafat Toghan, Paola De Padova, Gurumurthy Hegde
Summary: Science and engineering research studies are focusing on synthesizing, designing, and consuming ecologically benign chemical species as substitutes for harmful chemicals. Environmentally friendly alternatives, such as biopolymers and plant extracts, are widely used as corrosion inhibitors. Various methods and compounds have been extensively studied to provide corrosion resistance. This review provides an overview of the relevant literature and offers fresh insights for advancing the discipline.
APPLIED SCIENCES-BASEL
(2023)
Review
Materials Science, Composites
Radhika Mandala, Gurumurthy Hegde, Deepa Kodali, Venkateswara R. Kode
Summary: Peanut-shell-based polymer composites have versatile applications in industries such as packaging, construction, furniture, and electronics, and have gained attention as sustainable and cost-effective materials. This review article provides a systematic analysis of the mechanical properties of peanut-shell-based polymer composites, including the influence of factors such as filler content, surface modification techniques, interfacial adhesion, and processing methods. It also discusses current challenges and ongoing research efforts in this field. This comprehensive review offers valuable insights for researchers, industry professionals, and policymakers, promoting the development and utilization of peanut-shell-based polymer composites.
JOURNAL OF COMPOSITES SCIENCE
(2023)
Article
Chemistry, Physical
Abdullah A. Ghawanmeh, Ling Ling Tan, Gomaa A. M. Ali, Mohammed A. Assiri, Kwok Feng Chong
Summary: In this study, response surface methodology was used to optimize the amounts of carboxymethyl cellulose (CMC) and gum Arab (GA) for the fabrication of hydrogel beads for delivering anticancer drugs. The optimized nanocomposite showed good drug encapsulation efficiency and sustained drug release profile, making it a promising nanocarrier for controlled drug delivery.
JOURNAL OF MOLECULAR LIQUIDS
(2024)
Article
Multidisciplinary Sciences
Ashraf M. Ashmawy, M. A. Mostafa, Abo-Bakr Kamal, Gomaa A. M. Ali, M. S. A. El-Gaby
Summary: Carbon steel is widely used in the petroleum industry due to its properties, but environmental factors and corrosive materials can affect its lifespan. This study prepared pyrazalone-sulfonamide hybrids and investigated their performance as corrosion inhibitors for carbon steel. The results demonstrate the potential of pyrazolone-sulfonamide as effective organic corrosion inhibitors for carbon steel.
SCIENTIFIC REPORTS
(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)
