Article
Electrochemistry
Liang Zhu, Yingbing Zhang, Xiaoyu Zhao, Yaoxin Jiao, Zijian Zhao, Yanfei Wang, Nianjun Yang
Summary: Coating LiMn2O4 with Al2O3 and PPy using a sol-gel method improves electron conductivity, ion migration rate, and reduces Mn ion dissolution, resulting in enhanced Li ion storage performance of PPy/Al2O3/LMO. This strategy could be applied to synthesize other cathode materials for lithium ion batteries.
ELECTROCHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Wang Ke, Yunshan Jiang, Yi Han, Liang Deng, Yang Xia, Lanfang Que, Fuda Yu, Yan Wang, Zhenbo Wang
Summary: A strategy of in situ utilizing residual lithium to form a sulfur-containing surface coating layer is proposed for Co-free LLOs, significantly improving lithium-ion diffusion kinetics and inhibiting charge transfer resistance growth. The modified sample shows higher first coulombic efficiency, excellent rate capabilities, and superior cycle capacity retention.
Review
Chemistry, Multidisciplinary
Ziling Chen, Qian Zhang, Qijie Liang
Summary: The development of lithium-ion batteries heavily relies on the optimization of cathode materials, and carbon coating has been recognized as an effective strategy for meeting the demands of lithium-ion battery cathodes. This review focuses on the mechanisms and methods of carbon coating modification, as well as the recent progress and limitations of carbon coating on various cathode materials. Suggestions for improving the effectiveness of carbon coating in future studies are also provided.
Article
Nanoscience & Nanotechnology
Jiarui Chen, Shuang Cao, Zhi Li, Heng Li, Changmeng Guo, Ruijuan Wang, Lei Wu, Yixu Zhang, Yansong Bai, Xianyou Wang
Summary: In this study, homogeneous Li2ZrO3 (LZO) was successfully coated on the surface of Li1.2Mn0.54Ni0.13Co0.13O2 (LRO) by molten salt-assisted sintering technology. The as-prepared LRO@LZO composites have improved cycling performance due to the good chemical and electrochemical stability of LZO. Additionally, Li2ZrO3 acts as an excellent lithium-ion conductor, leading to increased lithium-ion transfer rate and improved rate capacity of LRO. Therefore, this study provides a new solution to enhance the structure stability and electrochemical performance of lithium-rich manganese-based cathode materials.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Jongha Hwang, Mincheol Jung, Jin-Ju Park, Eun-Kyung Kim, Gunoh Lee, Kyung Jin Lee, Jae-Hak Choi, Woo-Jin Song
Summary: Silicon-based electrodes are considered promising anodes for high-energy-density lithium-ion batteries due to their advantages, but the large volume change and low electrical conductivity during charge-discharge process are critical issues. In this study, the researchers solved the problem of volume expansion by applying a carbon coating method using low-cost phenolic resin, resulting in high-performance lithium-ion batteries.
Article
Chemistry, Analytical
Jiarui Huang, Qingshan Dai, Chengjie Cui, Hiabo Ren, Xiaojing Lu, Yong Hong, Sang Woo Joo
Summary: A cake-like porous Fe3O4 coated with a carbon layer (Fe3O4@C nanocakes) has been prepared and used as an anode for lithium-ion batteries (LIBs). The Fe3O4@C nanocakes show superior electrochemical properties and rate behavior, making them a potential electrode for LIBs with high specific capacities.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Yining Zou, Zuoxing Guo, Lin Ye, Yuhuan Cui, Kaiwen Zheng, Lijun Zhao
Summary: Transition metals and their oxides are widely studied as anode materials for lithium-ion batteries due to their high theoretical capacities. A porous raspberry-like nickel-enhanced MnO-based carbon-containing composite (Ni/MnO-C) has been successfully synthesized, increasing the specific capacity of LIBs. The porous nanostructure provides buffer space to prevent structural damage and, when broken into smaller nanoparticles, exposes more active sites for additional capacities.
ACS APPLIED NANO MATERIALS
(2021)
Article
Electrochemistry
Jiajie Wang, Fan Wang, Ziheng Guan, Junjie Wei, Yingjie Tao, Lanze Li, Shijie Ma, Sai Wu, Yajun Pang, Zhehong Shen, Hao Chen
Summary: Carbon/manganese oxide hybrid materials have attracted extensive attention as lithium-ion battery anode materials due to their abundant resources and simple preparation. However, their poor rate performance, weak cycle stability, and relatively high cost hinder their further development. In this study, a novel carbon/manganese oxide hybrid material was fabricated using low-cost carbonized bamboo leaves and manganese nitrate. The addition of MnSiO3 component in the hybrid material improved its intrinsic conductivity and Li+ diffusion ability, resulting in significantly improved rate capability and cycle performance compared to the hybrid material without MnSiO3. The excellent electrochemical performance of the hybrid material enables its application in lithium-ion full batteries with considerable energy storage performance.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Hyunwoo Kim, Woosung Choi, Jaesang Yoon, Eunkang Lee, Won-Sub Yoon
Summary: The study synthesized four different MnO2 polymorphs with controlled morphology to investigate their influences in conversion-based materials. Experimental results showed that spinel-phased MnO2 was formed during charge storage reactions for all samples, but the electrochemical performance varied based on the initial crystal structure. Among the polymorphs, lambda-MnO2 exhibited the highest reversible capacity of around 1270 mAh g(-1) due to its faster kinetics and structural similarity between cycled and pristine states. These findings suggest that polymorphs are an important factor in designing high-performance materials for next-generation rechargeable batteries.
Article
Chemistry, Multidisciplinary
Shuang Li, Yipeng Sun, Ning Li, Wei Tong, Xueliang Sun, Charles T. Black, Sooyeon Hwang
Summary: In this study, two different types of porous structures in high-voltage lithium, manganese-rich layered cathodes are revealed, along with the significance of the interface between the cathode and electrolyte in solid-state batteries. Nanopores are found near the interface, while nanovoids are formed during in situ Li+ extraction. Despite the development of nanovoids, the layered structure is preserved.
Review
Chemistry, Multidisciplinary
Wei Zhong, Ziqi Zeng, Shijie Cheng, Jia Xie
Summary: Prelithiation technology is one of the most effective methods to compensate for the loss of active lithium. This review analyzes the factors inducing lithium loss and investigates the mechanisms and effects of prelithiation. The emerging advanced prelithiation technologies and key issues are systematically summarized. Hybrid replenishment and lithium storage technologies are proposed to provide a reference for developing prelithiation technology.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Ting -Ting Wei, Panpan Peng, Shao-Jie Yang, Peng-Fei Wang, Ting-Feng Yi
Summary: Titanium-based oxide materials have potential as anode materials for lithium-ion batteries due to their structural stability and safety performance. However, poor conductivity hampers their practical application. In this study, porous ZnTiO3 rods and ZnTiO3/polytopamine (PDA) composites were synthesized to address this issue. The ZnTiO3/PDA (6.2 wt%) anode showed excellent cycling stability and high specific charge capacity. PDA coating enhanced the electrochemical reaction activity and mitigated volume change during the electrochemical reaction process.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Shuping Zhang, Jianyang Wu, Guangyu Zhao, Jing Chen, Huanfang Yang, Xiaorui Jiang, Miao Li, Bin Wu, Wen Liu, Henghui Zhou, Hailei Zhao
Summary: By surface coating and heat annealing LiCoO2 with Li2CoP2O7, the high-voltage performance of LiCoO2 can be improved, achieving high-voltage stability and high lithium-ion conductivity.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
S. Vauthier, M. Alvarez-Tirado, G. Guzman-Gonzalez, L. C. Tome, S. Cotte, L. Castro, A. Gueguen, D. Mecerreyes, N. Casado
Summary: The role of binders is crucial to achieve high performance and long cycle lives in next-generation electrodes for lithium batteries. In this study, PDADMA poly(ionic liquid)s with fluorinated anions were used as cathode binders in Li-ion and Li-air batteries, showing improved cell performances and enhanced capacity values, rate performance, and cycling stability. The proposed fluorinated PDADMA Poly(ionic liquid)s can be a highly competitive alternative to conventional binders used nowadays in Li-ion and Li-air batteries.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Giseung Lee, Kwangeun Jung, Yongho Lee, Jeonghan Kim, Taeeun Yim
Summary: Functionalized nickel-rich lithium metal oxide cathode materials using nano-titanium silicate as coating showed improved cycling performance in lithium-ion batteries by inhibiting electrolyte decomposition and maintaining particle hardness. This study demonstrates the potential of nano-titanium silicate as an effective coating material for enhancing the cycling behavior of lithium-ion batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Zefang Yang, Qi Zhang, Wenbin Li, Chunlin Xie, Tingqing Wu, Chao Hu, Yougen Tang, Haiyan Wang
Summary: This study presents the design of a semi-solid zinc slurry anode consisting of zinc powder and zincophilic tin additive, which addresses some issues of zinc metal anodes and has the potential to extend the lifespan of the battery in practical applications.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Chunlin Xie, Shengfang Liu, Zefang Yang, Huimin Ji, Shuhan Zhou, Hao Wu, Chao Hu, Yougen Tang, Xiaobo Ji, Qi Zhang, Haiyan Wang
Summary: Developing a stable and dendrite-free zinc anode is crucial for the commercialization of zinc metal batteries. However, the understanding of zinc dendrite formation mechanism is still insufficient. This study reveals that interfacial heterogeneous deposition induced by lattice defects and epitaxial growth limited by residual stress are intrinsic causes for zinc dendrite formation. An annealing reconstruction strategy is proposed to eliminate lattice defects and stresses, achieving dense epitaxial electrodeposition of zinc anode. The resulting annealed zinc anodes exhibit dendrite-free morphology and improved electrochemical cycling stability. This work provides a new mechanism for future research on zinc anode modification by highlighting the importance of lattice defects and residual stresses.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Chunlin Xie, Huimin Ji, Qi Zhang, Zefang Yang, Chao Hu, Xiaobo Ji, Yougen Tang, Haiyan Wang
Summary: To address the issues of poor cycle stability and low zinc utilization in aqueous zinc-ion batteries, attention has turned to zinc-plated anodes on host materials with high zincophilicity and stability. Through experimental observation and theoretical calculation, it is confirmed that Cu (2 2 0) has high zinc deposition activity. Cu (2 2 0) substrates with highly preferred orientation are prepared using an industrial electrolysis strategy. These substrates consistently modulate dense zinc growth, resulting in high zinc plating/stripping reversibility and improved capacity retention in Zn//MnO2 batteries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Jiaming Zhang, Yaping Zeng, Qiuping Li, Zheng Tang, Dan Sun, Dan Huang, Le Zhao, Yougen Tang, Haiyan Wang
Summary: A polymer-in-salt composite electrolyte with ultrahigh ionic conductivity and excellent electrochemical stability has been designed and studied for solid-state batteries. The electrolyte system combines a polymer matrix with high mechanical property, a lithium salt with low dissociation energy, and a filler for enhanced stability. The resulting composite electrolyte exhibits high ionic conductivity and good performance in battery tests.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chunlin Xie, Shengfang Liu, Wenxu Zhang, Huimin Ji, Shengqi Chu, Qi Zhang, Yougen Tang, Haiyan Wang
Summary: This article reports a unique design strategy for rechargeable zinc metal batteries using a gamma-valerolactone-based electrolyte and a nanocarbon-coated aluminum substrate, which solves the issues of uncontrollable dendrite growth, low Coulombic efficiency, and poor temperature tolerance. The optimized zinc metal capacitors can operate stably under various temperature conditions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Engineering, Environmental
Chaonan Lv, Yixin Li, Yuanxin Zhu, Yuxin Zhang, Jialin Kuang, Dan Huang, Yougen Tang, Haiyan Wang
Summary: HER-suppressing and precipitation-free molecular crowding electrolytes were developed using sodium polyacrylate (PANa) as the crowding agent. The fabricated aluminum-air battery with this electrolyte exhibited outstanding specific capacity, providing new insights for the design of high capacity and precipitation-free aluminum-air batteries.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yihu Li, Hao Wang, Tingqing Wu, Chunlin Xie, Zefang Yang, Qi Zhang, Dan Sun, Yougen Tang, Liang Fu, Haiyan Wang
Summary: This study proposes a strategy to tune the Zn stripping/plating behavior by engineering the interfacial double layer using an extremely low concentration of sulfolane. It is found that sulfolane can mainly occupy the inner Helmholtz layer, regulate the deposition of Zn2+, and promote uniform zinc deposition by weakening the electric field intensity. Additionally, the corrosion byproducts can be inhibited, leading to optimized battery performance.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Chunlin Xie, Shengfang Liu, Hao Wu, Qi Zhang, Chao Hu, Zefang Yang, Huanhuan Li, Yougen Tang, Haiyan Wang
Summary: Aqueous zinc metal batteries require electrolytes with wide temperature range, no dendrite growth, and corrosion resistance. This research introduces c-valerolactone as a co-solvent to improve the temperature tolerance and stability of the electrolyte, as well as achieve dendrite-free zinc deposition. The optimized electrolyte shows excellent performance in terms of cycle life and temperature range, making it a promising candidate for practical applications.
Article
Chemistry, Physical
Chaonan Lv, Yuanxin Zhu, Yixin Li, Yuxin Zhang, Jialin Kuang, Yougen Tang, Huanhuan Li, Haiyan Wang
Summary: This study presents a strategy of using a hydrogen-bonds reconstructing electrolyte with glycerol molecule to enhance the performance of aluminum-air batteries. The glycerol-based electrolyte suppresses the self-corrosion of aluminum anode and reduces the freezing point of electrolyte, resulting in a flow aluminum-air full battery with high specific capacity and low operating temperature. This finding provides a synthetic design strategy to mitigate metal corrosion and expand the temperature adaptation range of aqueous batteries.
ENERGY STORAGE MATERIALS
(2023)
Review
Electrochemistry
Zheng Tang, Siyu Zhou, Yuancheng Huang, Hong Wang, Rui Zhang, Qi Wang, Dan Sun, Yougen Tang, Haiyan Wang
Summary: Carbonaceous materials are promising candidates for lithium (sodium)-ion batteries due to their wide availability, renewable nature, and low cost. However, the low initial Coulombic efficiency (ICE) of high-capacity carbonaceous materials has hindered their practical applications. This review provides a comprehensive analysis of the structural differences and ion storage mechanisms of various carbonaceous materials, identifies the factors contributing to low ICE, and summarizes the strategies to overcome these challenges. The insights and perspectives discussed in this review will greatly contribute to the commercialization of carbonaceous anodes for high-energy Li/Na-ion batteries.
ELECTROCHEMICAL ENERGY REVIEWS
(2023)
Article
Chemistry, Multidisciplinary
Zefang Yang, Chao Hu, Qi Zhang, Tingqing Wu, Chunlin Xie, Hao Wang, Yougen Tang, Xiaobo Ji, Haiyan Wang
Summary: Aqueous zinc-ion batteries are safe but hindered by dendrite growth and corrosion on zinc anodes. Strategies for zinc anode modification have focused on lithium metal anodes without considering zinc anode mechanisms. Our proposed bulk-phase reconstruction strategy introduces zincophilic sites both on the surface and inside commercial zinc foils to improve resistance to dendrite growth and side reactions. This strategy offers a promising direction for developing dendrite-free metal anodes for sustainable rechargeable batteries.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Lin Zhu, Miaomiao Wang, Shuang Xiang, Dan Sun, Yougen Tang, Haiyan Wang
Summary: Achieving multi-sodium storage and high operating voltage is crucial for improving energy density of NASICON-type materials. However, the current activation of more redox couples leads to irreversible electrochemical reactions and rapid capacity degradation. To address this issue, a new medium-entropy concept is proposed, and a novel medium-entropy Na3Mn2/3V2/3Ti2/3(PO4)(3)/C@CNTs (ME-NMVTP) cathode is designed. The ME-NMVTP cathode exhibits a highly reversible specific capacity of 147.9 mA h g(-1) at 50 mA g(-1) and a long-term lifespan of 1000 cycles at 500 mA g(-1) (capacity retention of 88.3%), outperforming low-entropy cathodes such as Na4MnV(PO4)(3)/C@CNTs (LE-NMVP) and Na3MnTi(PO4)(3)/C@CNTs (LE-NMTP).
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chaonan Lv, Yixin Li, Yuanxin Zhu, Yuxin Zhang, Jialin Kuang, Qing Zhao, Yougen Tang, Haiyan Wang
Summary: A clay-based quasi-solid-state electrolyte is proposed for the first time to enhance the lifespan and safety of aqueous aluminum-air batteries. The clay with uniform pore channels facilitates aluminum ions uniform stripping and reduces the activity of free H2O molecules, thus suppressing the self-corrosion of aluminum anode. The fabricated aluminum-air battery achieves high energy density, liquid-like operating voltage, and outstanding specific capacity, surpassing previous aluminum-air batteries.
Article
Chemistry, Multidisciplinary
Huimin Ji, Chunlin Xie, Tingqing Wu, Hao Wang, Zhiwen Cai, Qi Zhang, Wenbin Li, Liang Fu, Huanhuan Li, Haiyan Wang
Summary: Amide additives act as hydrogen-bonding ligands, breaking the cross-linking structures between water molecules and increasing the entropy of mixed solvents, resulting in a mixed solvent with an ultralow freezing point of -98°C. Zinc-ion batteries using this hybrid solvent exhibit good cycling stability over a wide temperature range from -60°C to 50°C.
CHEMICAL COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Yaping Zeng, Le Zhao, Jiaming Zhang, Qiuping Li, Dan Sun, Yu Ren, Yougen Tang, Guanhua Jin, Haiyan Wang
Summary: Polymer solid electrolytes (SEs) are ideal for advanced lithium-metal solid-state batteries (SSBs) due to their high safety and flexibility. Polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) polymer SEs have gained attention for their high dielectric constants, high ionic conductivity, and excellent flexibility. However, the cycle life of PVDF-HFP-based SSBs is reduced by severe side reactions at the interface caused by residual DMF solvent decomposition. In this study, La2O3 nanoparticles are used as inorganic fillers to improve the cycling stability of PVDF-HFP/LiFSI/La2O3-40% composite polymer electrolyte (PVDF-HFP/La2O3 CPE). PVDF-HFP/LiFSI solid electrolyte (PVDF-HFP SE) containing 40 wt% La2O3 exhibits the highest ionic conductivity and stable interface chemistry, showing potential for application in SSBs.
Article
Chemistry, Physical
Tianyu Chen, Zhibin Lu, Guangjin Zeng, Yongmin Xie, Jie Xiao, Zhifeng Xu
Summary: The study introduces a high-performance LSGM electrolyte-supported tubular DC-SOFC stack for portable applications, which shows great potential in developing into high-performing, efficient, and environmentally friendly portable power sources for distributed applications.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Wenbin Tong, Yili Chen, Shijie Gong, Shaokun Zhu, Jie Tian, Jiaqian Qin, Wenyong Chen, Shuanghong Chen
Summary: In this study, a three-dimensional porous NiO interface layer with enhanced anode dynamics is fabricated, forming a Schottky contact with the zinc substrate, allowing rapid and uniform zinc plating both inside and below the interface layer. The resulting NiO@Zn exhibits exceptional stability and high capacity retention.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yafeng Bai, Kaidi Li, Liying Wang, Yang Gao, Xuesong Li, Xijia Yang, Wei Lu
Summary: In this study, a flexible zinc ion supercapacitor with gel electrolytes, porous alpha-MnO2@reduced graphene oxide cathode, and activated carbon/carbon cloth anode was developed. The device exhibits excellent electrochemical performance and stability, even at low temperatures, with a high cycle retention rate after 5000 cycles.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Anmol Jnawali, Matt D. R. Kok, Francesco Iacoviello, Daniel J. L. Brett, Paul R. Shearing
Summary: This article presents the results of a systematic study on the electrochemical performance and mechanical changes in two types of commercial batteries with different anode chemistry. The study reveals that the swelling of anode layers in batteries with silicon-based components causes deformations in the jelly roll structure, but the presence of a small percentage of silicon does not significantly impact the cycling performance of the cells within the relevant state-of-health range for electric vehicles (EVs). The research suggests that there is room for improving the cell capacities by increasing the silicon loading in composite anodes to meet the increasing demands on EVs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yohandys A. Zulueta, My Phuong Pham-Ho, Minh Tho Nguyen
Summary: Advanced atomistic simulations were used to study ion transport in the Na- and K-doped lithium disilicate Li2Si2O5. The results showed that Na and K doping significantly enhanced Li ion diffusion and conduction in the material.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Zongying Han, Hui Dong, Yanru Yang, Hao Yu, Zhibin Yang
Summary: An efficient phase inversion-impregnation approach is developed to fabricate BaO-decorated Ni8 mol% YSZ anode-supported tubular solid oxide fuel cells (SOFCs) with anti-coking properties. BaO nanoislands are successfully introduced inside the Ni-YSZ anode, leading to higher peak power densities and improved stability in methane fuel. Density functional theory calculations suggest that the loading of BaO nanoislands facilitates carbon elimination by capturing and dissociating H2O molecules to generate OH.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Suresh Mamidi, Dan Na, Baeksang Yoon, Henu Sharma, Anil D. Pathak, Kisor Kumar Sahu, Dae Young Lee, Cheul-Ro Lee, Inseok Seo
Summary: Li-CO2 batteries, which utilize CO2 and have a high energy density, are hindered in practical applications due to slow kinetics and safety hazards. This study introduces a stable and highly conductive ceramic-based solid electrolyte and a metal-organic framework catalyst to improve the safety and performance of Li-CO2 batteries. The optimized Li-CO2 cell shows outstanding specific capacity and cycle life, and the post-cycling analysis reveals the degradation mechanism of the electrodes. First-principles calculations based on density functional theory are also performed to understand the interactions between the catalyst and the host electrode. This research demonstrates the potential of MOF cathode catalyst for stable operation in Li-CO2 batteries.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Ganghua Xiang, Zhihuan Qiu, Huilong Fei, Zhigang Liu, Shuangfeng Yin, Yuen Wu
Summary: In this study, a CeFeOx-supported Pt single atoms and subnanometric clusters catalyst was developed, which exhibits enhanced catalytic activity and stability for the preferential oxidation of CO in H2-rich stream through synergistic effect.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Dimitrios Chatzogiannakis, Marcus Fehse, Maria Angeles Cabanero, Natalia Romano, Ashley Black, Damien Saurel, M. Rosa Palacin, Montse Casas-Cabanas
Summary: By coupling electrochemical testing to operando synchrotron based X-ray absorption and powder diffraction experiments, blended positive electrodes consisting of LiMn2O4 spinel (LMO) and layered LiNi0.5Mn0.3Co0.2O2 (NMC) were studied to understand their redox mechanism. It was found that blending NMC with LMO can enhance energy density at high rates, with the blend containing 25% LMO showing the best performance. Testing with a special electrochemical setup revealed that the effective current load on each blend component can vary significantly from the nominal rate and also changes with SoC. Operando studies allowed monitoring of the oxidation state evolution and changes in crystal structure, in line with the expected behavior of individual components considering their electrochemical current loads.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Chiara Cementon, Daniel Dewar, Thrinathreddy Ramireddy, Michael Brennan, Alexey M. Glushenkov
Summary: This Perspective discusses the specific power and power density of lithium-ion capacitors, highlighting the fact that their power characteristics are often underestimated. Through analysis, it is found that lithium-ion capacitors can usually achieve power densities superior to electrochemical supercapacitors, making them excellent alternatives to supercapacitors.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Weihao Wang, Hao Yu, Li Ma, Youquan Zhang, Yuejiao Chen, Libao Chen, Guichao Kuang, Liangjun Zhou, Weifeng Wei
Summary: This study achieved an improved electrolyte with excellent low-temperature and high-voltage performance by regulating the Li+ solvation structure and highly concentrating it. The electrolyte exhibited outstanding oxidation potential and high ionic conductivity under low temperature and high voltage conditions, providing a promising approach for the practical application of high-voltage LIBs.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Martin Bures, Dan Gotz, Jiri Charvat, Milos Svoboda, Jaromir Pocedic, Juraj Kosek, Alexandr Zubov, Petr Mazur
Summary: Vanadium redox flow battery is a promising energy storage solution with long-term durability, non-flammability, and high overall efficiency. Researchers have developed a mathematical model to simulate the charge-discharge cycling of the battery, and found that hydraulic connection of electrolyte tanks is the most effective strategy to reduce capacity losses, achieving a 69% reduction.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
M. Rodriguez-Gomez, J. Campo, A. Orera, F. de La Fuente, J. Valenciano, H. Fricke, D. S. Hussey, Y. Chen, D. Yu, K. An, A. Larrea
Summary: In this study, we analysed the operando performance of industrial lead cells using neutron diffraction experiments. The experiments revealed the evolution of different phases in the positive electrode, showed significant inhomogeneity of phase distribution inside the electrode, and estimated the energy efficiency of the cells.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Jiawei Liu, Chenpeng Wang, Yue Yao, Hao Ye, Yinglong Liu, Yingli Liu, Xiaoru Xu, Zhicong Chen, Huazheng Yang, Gang Wu, Libin Lei, Chao Wang, Bo Liang
Summary: The study focuses on utilizing double conductive Ni-pads as anode collectors in micro-tubular solid oxide fuel cells. The simulation results show excellent performance and stability of DCNPs, and also highlight the potential applications in various fields.
JOURNAL OF POWER SOURCES
(2024)
Article
Chemistry, Physical
Yang Wang, Kangjie Zhou, Lang Cui, Jiabing Mei, Shengnan Li, Le Li, Wei Fan, Longsheng Zhang, Tianxi Liu
Summary: This study presents a polyimide sandwiched separator (s-PIF) for improving the cycling stability of Li-metal batteries. The s-PIF separator exhibits superior mechanical property, electrolyte adsorption/retention and ion conductivity, and enables dendrite-free Li plating/stripping process.
JOURNAL OF POWER SOURCES
(2024)
