Article
Chemistry, Physical
Minxian Xu, Li Chen, Weiliang Zhou, Xi Liu, Dongzhen Lu, Minglu Zhang, Zheru Shi
Summary: In the information age, the demand for energy storage devices is increasing, leading to the development of manganese-based metal oxides with various potential windows and multivalent states as high-performance electrode materials. The research shows that carbon spheres serve as precursors to obtain various manganese metal oxides through gradient carbonization, resulting in distinctive electrochemical properties based on different crystal phases. Annealing temperature can alter the surface oxide morphology of MnO2/C, promoting the conversion to Mn2O3 and Mn3O4, ultimately influencing the electrochemical performance. Assembled symmetrical supercapacitors show high energy density under large power densities, making them a promising choice for storage materials in the information age.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Energy & Fuels
Priyanka Chahal, Suba Lakshmi Madaswamy, Soo Chool Lee, Saikh Mohammad Wabaidur, Vasudevan Dhayalan, Vinoth Kumar Ponnusamy, Ragupathy Dhanusuraman
Summary: This research introduces a facile method to fabricate a novel ternary nanocomposite material with improved electrochemical properties for energy storage applications. The nanocomposite exhibits high specific capacitance and low charge transfer resistance, indicating its potential utility in energy storage systems.
Article
Environmental Sciences
Mangesh A. Desai, Amol S. Vedpathak, Abhishek R. Bhapkar, Ganesh D. Saratale, Shrikrishna D. Sartale
Summary: The study demonstrates a novel method for the growth of highly adherent and compact Mn3O4 thin films using the SILAR method, which can be successfully converted into MnO2 after chemical treatment. Both electrochemical and chemical conversion processes show significantly improved supercapacitive performance, making them useful for recycling battery waste for supercapacitor applications.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Chemistry, Physical
Aijuan Xie, Haoye Wang, Zerui Zhu, Wanqi Zhang, Xiang Li, Qing Wang, Shiping Luo
Summary: The mesoporous CeO2-alpha-MnO2-rGO prepared by hydrothermal method showed excellent electrochemical performance, with high specific capacitance, energy density, and power density, as well as ultrahigh cycle stability, making it a suitable electrode material for supercapacitors.
SURFACES AND INTERFACES
(2021)
Article
Energy & Fuels
Chen Zhang, Aijuan Xie, Wanqi Zhang, Jianing Chang, Chenyang Liu, Linyang Gu, Xiaoxiao Duo, Fei Pan, Shiping Luo
Summary: The Copper manganese oxide-graphene (CuMn2O4-RGO) composite was prepared using the sol-gel method and physical grinding, and then applied as electrode materials for supercapacitors. Various characterization techniques were used to analyze the structure and morphology of the composites. Through electrochemical tests, it was found that the CuMn2O4-RGO composite at a mass ratio of 1:1 exhibited excellent electrochemical properties, with higher capacitance and energy density compared to pure CuMn2O4 and RGO. The composite shows promising potential as an electrode material for supercapacitors.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Thermodynamics
Samhita Pappu, Tata N. Rao, Surendra K. Martha, Sarada V. Bulusu
Summary: Aqueous supercapacitors with enhanced energy densities are in high demand due to their non-toxic and environmentally friendly nature. Metal oxide based pseudocapacitors can enhance the specific capacitance and energy density of the device by enlarging the potential window of the aqueous electrolyte and participating in faradaic reactions. In this study, MnO2 nanosheets were synthesized using an ecofriendly electrodeposition technique, and were found to be the best positive electrode for asymmetric supercapacitors (ASCs) due to their high charge storage capability. The effect of potassium iodide (KI) redox additive in the electrolyte on the energy density and device performance was also investigated. ASCs designed with YP-50 carbon and MnO2 as negative and positive electrodes, and optimized KI concentration, exhibited superior specific capacitance, capacity retention, and high energy density. The research provides a deeper understanding of MnO2's charge storage properties and the role of redox mediators in enhancing overall device performance in aqueous ASCs.
Article
Energy & Fuels
M. Geerthana, S. Prabhu, R. Ramesh
Summary: Transition metal oxide decorated graphene nanosheets have shown great potential in electrochemical energy storage, especially in supercapacitors. In this study, ternary alpha-Fe2O3/MnO2/rGO composites were synthesized using a solvothermal route and demonstrated excellent performance in energy storage devices.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Energy & Fuels
Muhammad Zia Ullah Shah, Muhammad Sajjad, Hongying Hou, Shams Ur Rahman, Arshad Mahmood, Uzma Aziz, A. Shah
Summary: CuO/TiO2 nanocomposites with high capacity performance were synthesized using a low-cost wet chemical method. The nanocomposites exhibited excellent energy storage performance and stability in supercapacitors. This study provides insights for the development of future supercapacitor electrode materials.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Chemistry, Physical
Wei Shao, Minglong Li, Xiaodong Wang, Ning Fu, Zhenglong Yang
Summary: The cobalt-doped iron oxide enhances the crystal structure and conductivity, as well as increases the pseudocapacitance of the electrode material. The prepared iron oxide nano-spheres with porous morphology exhibit higher area-specific capacitance. The assembled asymmetric supercapacitors maintain stable capacitance even after bending, demonstrating excellent electrochemical performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Segi Byun, Yoonsu Shim, Jong Min Yuk, Chan-Woo Lee, Jungjoon Yoo
Summary: A hybrid film of rGO and K-MnOx has been developed to increase the energy density of micro-supercapacitors. This hybrid film exhibits high volumetric capacitance and long cycle life, serving as a stepping stone for designing novel hybrid devices with high energy storage capabilities.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Shuoqing Zhao, Zhichao Liu, Guanshun Xie, Ziqi Guo, Shuguang Wang, Jinhui Zhou, Xiuqiang Xie, Bing Sun, Shaojun Guo, Guoxiu Wang
Summary: This study presents an economic and facile potassium compensation strategy using a self-sacrificial agent (K2C4O4) on cathodes to enhance the performance of potassium-ion batteries. The addition of K2C4O4 significantly improves the initial Coulombic efficiency and promotes the formation of a thin and F-rich cathode electrolyte interphase layer, leading to improved kinetics and interfacial stability. A potassium-compensated full cell shows three times higher energy density and enhanced capacity retention compared to a cell without any pre-potassiation treatment.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Applied
Lengyuan Niu, Lijin Yan, Zhengwei Lu, Yinyan Gong, Taiqiang Chen, Can Li, Xinjuan Liu, Shiqing Xu
Summary: In this study, delta-MnO2 with alkali-ion associated manganese vacancies were fabricated by a hydrothermal reaction, and the correlation between their electronic structure and pseudocapacitance were systematically investigated. The introduction of cation vacancies resulted in significant changes in the morphology of MnO2 and enhanced its conductivity, pseudocapacitance, and rate capability. Further theoretical calculations confirmed that cation vacancies can increase carrier concentration and improve the conductivity and pseudocapacitance of MnO2, providing a promising approach for the development of active and durable electrode materials.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
Muhammad Irfan, Xianhua Liu, Halayit Gebreselassie Abrha, Jonnathan Cabrera, Suraya Mushtaq, Yexin Dai, Pingping Zhang
Summary: This study demonstrated the potential of using a combination of persimmon waste-derived carbon and transition metal nitride for supercapacitor application. The bimetallic nitride-based composite exhibited high specific capacitance, good cycling stability, and high energy density, making it a promising material for high-performance energy storage devices. Additionally, the study showed a pathway for transforming environmental waste into sustainable energy conversion materials.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Electrochemistry
Batoul Hosseinzadeh, Bhawna Nagar, Raul Benages-Vilau, Pedro Gomez-Romero, Sayed Habib Kazemi
Summary: By pyrolysis of a simple Cobalt Metal Organic Framework (MOF), a high-performance hybrid composite electrode with superb capacity and power density was successfully synthesized. An asymmetric supercapacitor (ASC) fabricated using this composite material showed excellent energy density and power density performance.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Electrical & Electronic
Zhongbing Wang, Jingyuan Fang, Yonghao Hao, Chunnian Chen, Dawei Zhang
Summary: In this study, Mn3O4 supercapacitor electrode material with specific morphology was synthesized using a two-step hydrothermal method. The combination of nanoparticles and nanorods enhanced the electrochemical performance, demonstrating good cyclic stability and energy storage capability.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Liang Xue, Qinghua Zhang, Yalan Huang, He Zhu, Lili Xu, Shiying Guo, Xiaohui Zhu, Hanghui Liu, Yin Huang, Jiangfeng Huang, Lude Lu, Shengli Zhang, Lin Gu, Qi Liu, Junwu Zhu, Hui Xia
Summary: This work investigates the structural degradation of layered cathode materials, using LiCoO2 as an example, in aqueous electrolytes. The research finds that the accelerated irreversible layered-to-spinel phase transition caused by H+ insertion is the main reason for the structural degradation and fast capacity fading in LiCoO2. To mitigate the influence of H+ and the adverse phase transition, a Li-excess Li1+tCo1-tO2-t with intermediate spin Co3+ is developed. The reversible water intercalation/deintercalation in the layered structure during charge/discharge effectively suppresses the layered-to-spinel phase transition with cycling.
ADVANCED MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Qiuying Xia, Feng Zan, Qianyu Zhang, Wei Liu, Qichanghao Li, Yan He, Jingyi Hua, Jiahao Liu, Jing Xu, Jinshi Wang, Chuanzhi Wu, Hui Xia
Summary: This review discusses the current status and existing challenges of all-solid-state thin-film lithium/lithium-ion microbatteries (TFBs) for practical application in internet-connected devices for the Internet of Things (IoT). Recent progress in thin-film deposition, electrode and electrolyte materials, interface modification, and 3D architecture design is comprehensively summarized and discussed, with an emphasis on state-of-the-art strategies to improve the areal capacity and cycling stability of TFBs. Perspectives on designing practically accessible TFBs are provided to guide the future development of reliable power sources for IoT devices.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Fiaz Hussain, Jinlong Zhu, Hui Xia, Yusheng Zhao, Wei Xia
Summary: This article explores the properties of various halide electrolytes with different structures, revealing that halospinel Li2M2/3Cl4 structures exhibit excellent conductivity and stability, with Li2Sm2/3Cl4 showing particular promise for potential applications in solid-state batteries.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Fan Yue, Qiuying Xia, Yang Gong, Mingyang Wang, Hui Xia, Xiaodong Huang
Summary: A fully coupled electrochemical-mechanical-thermal model was established to investigate the behavior of all-solid-state thin-film Li-ion batteries at low temperatures. It was found that mass-transfer overpotential across the electrolyte and charge-transfer overpotential at the cathode/electrolyte interface are key factors affecting battery performance.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Multidisciplinary
Liang Xue, Chao Wang, Hanghui Liu, Hao Li, Tingting Chen, Zhengyi Shi, Ce Qiu, Mingqing Sun, Yin Huang, Jiangfeng Huang, Jingwen Sun, Pan Xiong, Junwu Zhu, Hui Xia
Summary: The structural stability of layered LiCoO2 in aqueous electrolyte can be remarkably improved by altering the oxygen stacking from O3 to O2. The O2-type LiCoO2 exhibits significantly improved cycle performance in neutral aqueous electrolyte.
Article
Physics, Applied
Jiao Chen, Qiuying Xia, Wei Liu, Hui Xia
Summary: TiO2 thin film is a promising anode material for all-solid-state thin film lithium-ion microbatteries due to its high temperature tolerance, good chemical stability, and desirable structural stability. However, its application has been limited by its low actual capacity and poor rate capability. In this study, a TiO2 thin film with a unique amorphous-crystalline heterostructure is prepared, which enhances the lithium storage performance and exhibits higher reversible specific capacity and excellent cycling stability.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Li-Ming Wan, Qiu-Ying Xia, Jiang-Hua Wu, Jing Liu, Zheng-Yi Shi, Si Lan, Teng Zhai, Serguei V. Savilov, Sergey M. Aldoshin, Hui Xia
Review
Nanoscience & Nanotechnology
Tingting Chen, Liang Xue, Zhengyi Shi, Ce Qiu, Mingqing Sun, Yang Zhao, Juntao Liu, Mingzhu Ni, Hao Li, Jing Xu, Hui Xia
Summary: This review focuses on the importance of interlayer modulation in layered transition metal compounds for high-performance electrochemical energy storage devices. Interlayer modulation can effectively improve the overall electrochemical performance by addressing issues such as sluggish kinetics, structural distortion, irreversible phase transition, dissolution of transition metal elements, and air instability. The article discusses the merits of interlayer modulation on charge storage procedures and summarizes the state-of-the-art strategies of intercalation and doping with foreign species. The applications of modified layered electrode materials in various energy storage devices are also highlighted.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Mei Yang, Xiaoqing Chang, Liuqi Wang, Xingyu Wang, Mengyan Gu, Hao Huang, Lingyu Tang, Yiren Zhong, Hui Xia
Summary: Although transition metal sulfides (TMS) have been extensively studied as anode materials for sodium-ion batteries, their short cycle life remains a challenge. This study demonstrates a new capacity fading mechanism of TMS electrodes, attributing it to the parasitic reaction between electrolyte anions and metal sulfides. By manipulating the anion decomposition and constructing a stable interface, the researchers achieve significant improvement in cycle performance of various metal sulfides. This work provides a unique perspective on the cycling failure mechanism of metal sulfides and emphasizes the critical importance of interface chemistry in sodium-ion batteries.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Fiaz Hussain, Pengcheng Yu, Jinlong Zhu, Hui Xia, Yusheng Zhao, Wei Xia
Summary: Sodium solid electrolytes are crucial for all-solid-state sodium batteries, and this article uses simulation methods to predict a series of sodium superionic conductors with remarkable ion-conducting properties and interface compatibility, providing important theoretical guidance for the research and development of all-solid-state sodium batteries.
ADVANCED THEORY AND SIMULATIONS
(2023)
Review
Chemistry, Multidisciplinary
Mingzhe Chen, Limin Zhou, Tong Wang, Hui Xia, Hua-Kun Liu, Shi-Xue Dou, Shulei Chou
Summary: The nitrogen doping strategy has shown potential in improving the electrochemical performance of lithium-ion batteries and sodium-ion batteries. However, there are still unresolved issues regarding phase formation, valence change, and ion kinetics, which need further exploration.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Qiuying Xia, Yu Cai, Wei Liu, Jinshi Wang, Chuanzhi Wu, Feng Zan, Jing Xu, Hui Xia
Summary: All-solid-state thin film lithium batteries (TFBs) are considered the ideal power source for microelectronics, but recycling of TFBs has been rarely studied. This research developed a simple recycling strategy for TFBs, successfully dissolved the spent Li anode, and demonstrated the feasibility of direct recycling.
ACTA PHYSICO-CHIMICA SINICA
(2023)
Proceedings Paper
Materials Science, Multidisciplinary
Ekaterina A. Arkhipova, Anton S. Ivanov, Oksana Ya Isaikina, Roman Yu Novotortsev, Dmitrii N. Stolbov, Hui Xia, Serguei Savilov
Summary: This article compares the electrochemical performance of multi-walled carbon nanotubes (MWCNTs), MnO2, and MnO2/MWCNT nanocomposite as electrode mass in supercapacitors, and finds that MnO2/MWCNT exhibits the highest specific capacitance.
MATERIALS TODAY-PROCEEDINGS
(2022)
Review
Chemistry, Physical
Jin Li, Hongye Yang, Jianghua Wu, Shuo Sun, Teng Zhai, Hui Xia
Summary: The ability of transition metal compounds (TMCs) to achieve high energy and power density is limited by their poor electrical and ionic conductivity. The construction of heterostructured TMCs has gained significant interest in recent years as it can enhance the charge transport and storage capabilities of TMC-based electrodes. This review comprehensively discusses recent progress in the development of heterostructured TMCs from the perspective of defects, emphasizing the mechanisms by which defects influence electrochemical performance and effective strategies to incorporate various types of defects around the hetero-interface.
Review
Chemistry, Physical
Shuo Sun, Jin Li, Cuixia Xu, Teng Zhai, Hui Xia
Summary: This article discusses the degradation mechanisms of manganese-based layered oxide (MLO) cathodes in electrochemical energy storage, focusing on the local octahedral distortion induced by the Jahn-Teller (J-T) effect in MLO cathodes and its associated irreversible phase transformation, dissolution/disproportionation reactions, interfacial degradation, and crack formation. The article also reviews the advances in atomic-level structure and property optimizations of MLO materials and the in-depth correlations between structure, function, and property. Finally, the article provides perspectives on the future development of MLO materials.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
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)