Article
Chemistry, Physical
Maryam Nojabaee, Brigitta Sievert, Marina Schwan, Jessica Schettler, Frieder Warth, Norbert Wagner, Barbara Milow, K. Andreas Friedrich
Summary: In this study, ultramicroporous carbon aerogels with a highly porous structure were synthesized and used as conductive matrices for sulfur in lithium-sulfur batteries. The sulfur-infiltrated microporous carbon aerogel cathodes showed the capability to suppress the polysulfide shuttle effect, maintaining high discharge capacities after multiple cycles at different rates in various electrolytes. This composite cathode demonstrated good cyclability and compatibility with both carbonate and ether-based electrolyte systems.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Chemistry, Physical
Daniele Versaci, Irene Canale, Sumita Goswami, Julia Amici, Carlotta Francia, Elvira Fortunato, Rodrigo Martins, Luis Pereira, Silvia Bodoardo
Summary: The lithium-sulphur battery technology offers higher energy storage capacity but faces commercialization challenges, mainly due to the shuttle phenomenon caused by soluble long chain LiPSs. Recent advancements in interlayer separators aim at physically blocking LiPSs to improve battery performance.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Siqi Zhang, You-Liang Zhu, Siyuan Ren, Chunguang Li, Xiao-Bo Chen, Zhenjiang Li, Yu Han, Zhan Shi, Shouhua Feng
Summary: In this study, a nitrogen-rich covalent organic framework (TB-COF) was designed as an aqueous anode for calcium ion batteries, addressing the challenges of organic materials' solubility and low electronic conductivity. TB-COF demonstrated a high reversible capacity and long cycle life, with a validated redox mechanism and identification of a novel active site for calcium ion storage.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Energy & Fuels
Najeeb Ur Rehman Lashari, Mingshu Zhao, Jun Wang, Xinhai He, Irfan Ahmed, Miaomiao Liang, Songpon Tangsee, Xiaoping Song
Summary: In this study, vanadium pentoxide modified with graphene was used as an anode material in an aqueous rechargeable sodium-ion battery, showing improved battery performance with higher charge-discharge capacity and cyclic capacity retention. V2O5@G exhibited larger sodium storage capacity, enhanced rate capability, increased Na+ diffusivity, and reduced electrochemical reaction resistance, indicating its potential as a promising electrode material for ARSBs.
Article
Materials Science, Multidisciplinary
Lingxiao Fang, Jisi Chen, Peng Wang, Yu Chen, Chuanxi Xiong, Quanling Yang, Zhuqun Shi
Summary: Recently, there has been increased attention towards lithium-sulfur batteries due to their high specific capacity, energy density, and range of sources. In this study, a simple method for preparing a sulfur host material was explored. The use of carbonized cellulose nanofibrils doped with carbon nanotubes as the matrix in the cathode resulted in a three-dimensional porous network structure with a specific surface area of 254.4 m(2) g(-1) for the 40-CNFC sample. Loading sulfur onto this material resulted in an initial specific capacity of 1168 mAh g(-1) at 0.1C, and a retained capacity of 739 mAh g(-1) after 120 cycles at 0.5C, showing promise as an electrode material for lithium-sulfur batteries.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Physical
Ke Yang, Chan Li, Haoyuan Qi, Yunfei Dai, Yuhong Cui, Yibo He
Summary: The construction of g-C3N4@MQDs functional layer on Celgard separator by electrostatic adsorption was an effective solution to mitigate the shuttle effect of polysulfides in Li-S batteries. The MQDs not only provided more active sites to capture dissolved polysulfides, but also acted as an electrocatalyst to facilitate the Li2S catalytic conversion, resulting in high capacity and excellent performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Zhangyan Shi, Rui Du, Chuanbai Yu, Wenhui Rao, Chengying Xu, Jiangle Wang
Summary: This study synthesized graphene oxide (GO)/Cu(OH)(2) composites as hosts for lithium-sulfur batteries to overcome the poor cyclic performance. The GO with oxygen-containing function groups facilitates ion/electron accessibility, and the interlayers of GO provide active sites for polysulfide conversion. The hydrophilic hydroxyl groups in Cu(OH)(2) particles chemically adsorb polysulfides. The synergistic effect of GO and Cu(OH)(2) inhibits the dissolution and shuttling of polysulfides. The lithium-sulfur batteries with GO/Cu(OH)(2) composites exhibit high capacity and excellent cyclic performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Zihe Chen, Yuxin Hu, Wei Liu, Fang Yu, Xuefeng Yu, Tao Mei, Li Yu, Xianbao Wang
Summary: In this study, a three-dimensional interconnected sulfur system is utilized to create a cathode for lithium-sulfur batteries, achieving high sulfur content and uniform distribution. The synergistic effect of the 3D interconnected architecture and uniform coating layer of MnO2 leads to excellent cycling performance with a high capacity retention even at high rates.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Lichao Fu, Dapeng Liu, Xintao Zuo, Haohan Yu, Zerui Fu, Yu Zhang
Summary: Lithium-sulfur batteries have great advantages in theoretical energy density but suffer from poor conductivity of sulfur and discharge products, as well as the shuttle effect of lithium polysulfides. This study introduces a Co-NHPC material prepared by a template method, which exhibits good adsorption and catalytic conversion ability of lithium polysulfides. The Co-NHPC material shows high initial specific capacity and maintains good reversible capacities even after 500 cycles.
SCIENCE CHINA-MATERIALS
(2023)
Review
Polymer Science
Soochan Kim, Youngkwan Lee
Summary: Lithium-sulphur batteries (LiSBs) are being widely studied as next-generation energy storage devices due to their high theoretical energy density, low cost, and environmental friendliness. However, the shuttle effect caused by lithium polysulphides (LPSs) limits their practical application. Conductive polymers have been used to fabricate LiSBs and control the shuttle effect by providing improved electrically conducting pathways, flexible mechanical properties, and high affinity to LPSs. This study systematically investigates the applications of various conductive polymers prepared via electropolymerisation technology in different components of LiSBs and discusses the potential application of this technology in next-generation batteries.
Review
Electrochemistry
Utkarsh Chadha, Preetam Bhardwaj, Sanjeevikumar Padmanaban, Reyna Michelle Suneel, Kevin Milton, Neha Subair, Akshat Pandey, Mayank Khanna, Divyansh Srivastava, Rhea Mary Mathew, Senthil Kumaran Selvaraj, Murali Banavoth, Prashant Sonar, Badrish Badoni, Nalamala Srinivasa Rao, S. Gopa Kumar, Arun Kumar Ray, Amit Kumar
Summary: This paper summarizes recent progress in carbon-based electrode materials in Li-S batteries, including the development of electrode materials, electrolytes, and flexible devices. The article also discusses a comparison of Li-S batteries with other rechargeable battery competitors and examines other non-carbon-based electrodes used in the lithium-sulfur battery. Finally, a general conclusion and future directions are provided.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Guozhi Wu, Shanqing Li, Zheng Chen, Ajiao Sun, Jie Yang, Sang Woo Joo, Jiarui Huang
Summary: The low electrical conductivity of sulfur and other limitations in Li-S batteries can be overcome by using nitrogen-doped carbon nanotubes encapsulated with MoP nanoparticles. This study provides a novel route to prepare nanoparticle-embedded materials for advanced Li-S batteries.
Article
Chemistry, Multidisciplinary
Zhi Gao, Tao Zhang, Xiaoliang Pan, Shikun Xie, Lijun Liu, Yonghui Zeng, Chengning Xie
Summary: This study explores the use of LiMnPO4/CNTs hollow microspheres to address the limitations of LiMnPO4 as a cathode material for lithium-ion batteries. By incorporating CNTs and aligning the pores, both electronic conductivity and Li+ diffusion are improved, resulting in superior electrochemical performance.
Article
Materials Science, Multidisciplinary
Kailiang Qi, Ruiying Lei, Fan Zhang, Yuzhou Luo
Summary: In this study, an N, P co-doped porous carbon (NPPC) was synthesized by one-step solid-state pyrolysis of a mixture of bio-wastes and potassium hydroxide. The NPPC displayed a hierarchically porous structure with high specific surface area. The S/NPPC composite material showed a high initial reversible capacity and excellent cycling performance in a lithium-sulfur battery. This work provides a simple method to convert abandoned bio-wastes into ideal cathode materials for lithium-sulfur batteries.
Article
Chemistry, Multidisciplinary
By Lei Huang, Haomiao Zhang, Zhong Qiu, Ping Liu, Feng Cao, Xinping He, Yang Xia, Xinqi Liang, Chen Wang, Wangjun Wan, Yongqi Zhang, Minghua Chen, Xinhui Xia, Wenkui Zhang, Jiancang Zhou
Summary: In this study, a novel biofermentation coupled gel composite assembly technology is developed to prepare carbon hosts with high conductivity, accelerated electrochemical catalytic activities, and superior physical/chemical confinement on sulfur and its reaction intermediates polysulfides. The constructed C/S cathodes show exceptional cycle stability and excellent rate performance.
Article
Energy & Fuels
Guruprakash Karkera, Mervyn Soans, Bosubabu Dasari, Ediga Umeshbabu, Musa Ali Cambaz, Zhen Meng, Thomas Diemant, Maximilian Fichtner
Summary: Rechargeable chloride-ion batteries (CIBs) are a promising battery technology with the potential to offer high theoretical volumetric capacities, lower cost, and higher abundance. The challenge lies in finding suitable electrodes and electrolytes. In this study, tungsten oxychloride is introduced as a cathode material for CIBs, demonstrating good electrochemical performance and reversible capacity. Postmortem analysis reveals the reversible transfer of chloride ions between electrodes through a conversion mechanism, paving the way for the use of tungsten chloride-based electrode materials for battery applications.
Article
Chemistry, Physical
Liping Wang, Zhenyou Li, Zhen Meng, Yanlei Xiu, Bosubabu Dasari, Zhirong Zhao-Karger, Maximilian Fichtner
Summary: This study presents the synthesis of a non-corrosive gel polymer electrolyte based on magnesium tetrakis(hexafluoroisopropyloxy)borate, which demonstrates excellent electrolytic properties. The electrolyte shows high ionic conductivity, reversible Mg plating/stripping capability, and low voltage polarization, while preventing dissolution and diffusion of soluble electrode materials. Additionally, it suppresses the polysulfide shuttle in Mg-S batteries, thus improving battery performance.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Physical
Piotr Jankowski, Zhenyou Li, Zhirong Zhao-Karger, Thomas Diemant, Maximilian Fichtner, Tejs Vegge, Juan Maria Garcia Lastra
Summary: Magnesium batteries are a promising post-lithium technology, and finding an efficient and safe electrolyte is crucial for their commercialization. Magnesium tetrakis(hexafluoroisopropyloxy)borate (Mg[B(hfip)(4)](2)) is considered one of the best candidates due to its electrochemical properties and chemical stability. In this study, we analyze the unique structure of this salt and the interactions in the electrolyte, revealing the delicate balance between electron-withdrawing effects and ligand stabilization. Understanding the nature of this anion allows for the rational development of new anion structures.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Physical
Shashwat Singh, Deobrat Singh, Rajeev Ahuja, Maximilian Fichtner, Prabeer Barpanda
Summary: Eldfellite NaVIII(SO4)(2) is introduced as a new versatile cathode material for Li-ion and Na-ion batteries, with potential two-electron uptake. The study provides mechanistic insights into alkali ion migration and the redox center during (de)insertion of Li+/Na+ ions.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Ediga Umeshbabu, Satyanarayana Maddukuri, Doron Aurbach, Maximilian Fichtner, Anji Reddy Munnangi
Summary: We introduced a garnet-type lithium metal fluoride, Li3Na3M2F12 (M = Al, Sc, In), as solid-state lithium-ion conductors for the first time. The mechanically milled Li3Na3M2F12 compounds crystallized in a cubic garnet-like structure. The ionic conductivities of Li3Na3Al2F12, Li3Na3Sc2F12, and Li3Na3In2F12 are relatively low, but still better than the oxide analogues Li(3)Ln(3)Te(2)O(12) (Ln = Er, Gd, Tb, Nd). Strategies for further improving conductivities of garnet-type Li3Na3M2F12 were also presented.
ACS APPLIED ENERGY MATERIALS
(2023)
Review
Chemistry, Physical
Zhenyou Li, Joachim Haecker, Maximilian Fichtner, Zhirong Zhao-Karger
Summary: This review summarizes recent findings related to Mg cathode chemistry, focusing on strategies that promote Mg2+ diffusion and the critical role of cathode-electrolyte interfaces. The article also discusses conversion chemistries and coordination chemistries that bypass Mg2+ diffusion and revisits hybrid systems combining monovalent cathode chemistries with high-capacity Mg anodes. Overall, the aim is to provide fundamental insights into cathode chemistry for practical high-performance Mg batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Electrochemistry
Janina Drews, Johannes Wiedemann, Rudi Ruben Maca Alaluf, Liping Wang, J. Alberto Blazquez, Zhirong Zhao-Karger, Maximilian Fichtner, Timo Danner, Arnulf Latz
Summary: The impact of different mass loadings and particle size distribution of the active material on the performance of magnesium-ion batteries has been studied. A detailed continuum model is developed to describe the complex intercalation process of magnesium into a Chevrel phase cathode, taking into account the thermodynamics, kinetics, and the influence of desolvation on electrochemical reactions.
BATTERIES & SUPERCAPS
(2023)
Article
Chemistry, Physical
Yasaman Shirazi Moghadam, Yang Hu, Abdel El Kharbachi, Stephanie Belin, Thomas Diemant, Jun Chen, Robert A. House, Peter G. Bruce, Maximilian Fichtner
Summary: In this work, synchrotron operando X-ray absorption spectroscopy (XAS) was used to study the chemical and structural evolution of Mn and Ti in Li-rich disordered rocksalt (DRS) cathode compounds for Li-ion batteries. The results provide insights into the development of Mn double-redox reactions in the DRS cathodes from initial cycles to prolonged cycling and elucidate the impacts of the reduced Mn redox activity and the increased local ordering on the cycling stability.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Daniel Bier, Zhenyou Li, Svetlana Klyatskaya, Najoua Sbei, Ananyo Roy, Sibylle Riedel, Maximilian Fichtner, Mario Ruben, Zhirong Zhao-Karger
Summary: In this study, 1,5-poly(anthraquinonylsulfide) (PAQS) was investigated as a cathode material for calcium-ion batteries. When paired with calcium tetrakis(hexafluoroisopropyloxy)borate Ca[B(hfip)(4)](2) electrolytes, PAQS showed cost-effective synthesis and environmentally friendly processing. By replacing the calcium metal anode with a calcium-tin (Ca-Sn) alloy anode, the cycling performance and rate capability of the PAQS cathodes were significantly improved.
Article
Chemistry, Inorganic & Nuclear
Deepa Singh, Shashwat Singh, Ponnappa Kechanda Prasanna, Rajeev Kumar Rai, Prae Chirawatkul, Sudip Chakraborty, Maximilian Fichtner, Prabeer Barpanda
Summary: ZnCo2(PO4)(2), a zinc-substituted cobalt phosphate synthesized using a low-cost solution combustion route, exhibited efficient oxygen evolution and reduction activities. The crystal structure of ZnCo2(PO4)(2) consists of distorted cobalt and zinc trigonal bipyramids, which allow it to function as a robust bifunctional catalyst comparable to precious metal catalysts. This research provides valuable insights for the development of highly efficient and stable electrocatalysts for metal-air batteries.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Tobias Braun, Sirshendu Dinda, Guruprakash Karkera, Georgian Melinte, Thomas Diemant, Christian Kuebel, Maximilian Fichtner, Frank Pammer
Summary: The development of commercially viable fuel cells and metal-air batteries requires effective and cheap bifunctional catalysts for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER). Multi-component Pt-Fe-Co-Ni nanoparticles on multi-walled carbon nanotubes (MWCNTs) synthesized by wet chemistry route show excellent ORR activity and promising OER activity, comparable to Pt/C or RuO2. The catalyst also has outstanding long-term stability in ORR and OER, indicating the significant effect of Pt substitution by transition metal (TM) and the formation of nanoparticles on catalytic performance.
Article
Chemistry, Physical
Ling Lin, Ziming Ding, Guruprakash Karkera, Thomas Diemant, Mohana V. V. Kante, Daisy Agrawal, Horst Hahn, Jasmin Aghassi-Hagmann, Maximilian Fichtner, Ben Breitung, Simon Schweidler
Summary: High-entropy sulfides (HESs), as a newly developed class of materials, show great potential as efficient electrocatalysts for various reactions. In this study, HESs containing five or six transition metals are synthesized using a one-step mechanochemical process. By comparing the performances and properties of HESs with different compositions and structures with commercial IrO2, it is found that most of the HESs exhibit excellent electrocatalytic performance for the oxygen evolution reaction (OER) under alkaline conditions, outperforming the reference catalyst IrO2.
Article
Chemistry, Multidisciplinary
Deepa Singh, Yang Hu, Sher Singh Meena, Rishikesh Vengarathody, Maximilian Fichtner, Prabeer Barpanda
Summary: This study explores the use of iron-based fluorphosphate as a cathode for zinc-ion batteries, which can reversibly intercalate zinc ions and has the advantage of low cost.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Shivam Trivedi, Venkat Pamidi, Maximilian Fichtner, M. Anji Reddy
Summary: Ionically conducting inorganic binders, with their properties of ion conduction, water processability, environmental friendliness, low cost, thermal stability, emission-free nature, and safety, are a superior alternative to traditional binders.
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)
