Article
Chemistry, Multidisciplinary
Hui Wan, Zhixiao Liu, Guangdong Liu, Shuaiyu Yi, Pengfei Yan, Huiqiu Deng, Wangyu Hu, Fei Gao
Summary: Electrochemical cycling induces transition-metal ion migration and oxygen vacancy formation in layered transition-metal oxides, causing performance decay. This study used ab initio calculations and atomic level imaging to explore the migration mechanisms in LiNi1/3Mn1/3Co1/3O2, revealing favorable pathways for transition-metal migration and the critical role of nickel in stabilizing layered cathodes. Insights from this study may lead to tailored layered cathodes with high structural stability and superior performance.
Article
Chemistry, Physical
Cheng-Hung Lin, Zhengyu Ju, Xiaoyin Zheng, Xiao Zhang, Nicole Zmich, Xiaoyang Liu, Kenneth J. Takeuchi, Amy C. Marschilok, Esther S. Takeuchi, Mingyuan Ge, Guihua Yu, Yu-chen Karen Chen-Wiegart
Summary: Modifying electrode materials and conductive fillers can enhance the performance and stability of electrodes. Three-dimensional quantification analysis of electrodes can provide a better understanding of the dimensionality effects of electrode materials.
Article
Chemistry, Analytical
Yusuke Abe, Kensuke Sawa, Masahiro Tomioka, Ryoei Watanabe, Tatsuya Yodose, Seiji Kumagai
Summary: We present a methodology for extracting cathode active materials from waste lithium-ion batteries (LIBs) in a time-effective, automatic, and safe manner. The recovered materials can be used for the fabrication of new LIBs. The feasibility of the method was tested for the recovery of ternary Li transition metal oxide (LTMO) cathode materials from waste automotive LIBs. The recovered materials showed promising electrochemical performance, with high capacity retention after multiple charge-discharge cycles.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Haipeng Shan, Zhiming Zhang, Hui Cao, Binfeng Fan, Guangya Hou, Huazhen Cao, Yiping Tang, Guoqu Zheng
Summary: The degradation mechanism of LiNi1/3Co1/3Mn1/3O2 batteries is similar at different temperatures, with loss of active materials increasing with temperature. The evolution of the covering layer on the negative electrode surface is crucial for cycle life.
SURFACES AND INTERFACES
(2021)
Article
Chemistry, Physical
Yunyun Zhang, Jian Li, Weiguo Huang, Zhexi Chi, Jinyu Bo, Lihua Wang, Zhiyong Wang
Summary: In the recycling process of spent lithium-ion batteries, the presence of Al impurities affects the physical and electrochemical properties of the recovered cathode active materials. This study investigates the effects of different forms (Al and Al3 +) and concentrations of Al impurities on the recovery of LiNi1/3Co1/3Mn1/3O2 cathode material. The results show that Al3 + impurities promote particle nucleation and growth, improving electrochemical performance, while existing Al impurities lead to additional side reactions and negatively impact electrochemical performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jing Han, Jun Yang, Zhixin Xu, Hongping Li
Summary: The combination of LiMnPO4 and LiNCMO composite electrodes exhibits improved specific capacity and rate capability, attributed to the high electronic conductivity and Li+ diffusion of the composite materials.
Article
Chemistry, Analytical
Muharrem Kunduraci, Selda Kilic Cetin, Ugur Caglayan, Rasiha Nefise Mutlu, Dogan Kaya, Ahmet Ekicibil
Summary: The electrochemical performance of an aqueous lithium-ion battery with LiV3O8 anode, 'water-in-salt' 20 M LiTFSI electrolyte, and LiNi1/3Co1/3Mn1/3O2 cathode was investigated. The battery exhibited high lithiation capacity, extended cycle life, and stable discharge potential.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Chemical
RuiHao Shan, Xiaoxiao Lu, Yuankang Xu, Kefan Shen, Yang Xia, Yurong Cai, Juming Yao, Qinzhong Mao, Yinfeng Wang, Tongzong Ji
Summary: Single-crystal NCMs are considered promising cathode materials for next-generation lithium batteries due to their good cyclability and high safety. However, industrial production of single-crystal NCMs faces challenges of lengthy production steps, high production costs, and poor consistency. In this study, a Ni-Co-Mn ternary MOF was developed for the preparation of NCM cathode materials, which exhibited high activity and could be used to prepare single-crystal NCM111 (SC-NCM) through a regular sintering process. The as-prepared SC-NCM cathode materials showed a polyhedral structure with a smooth surface and demonstrated excellent cyclability and high specific capacities as a high-voltage cathode.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Physical
Yu -Long Xie, Li -Fang Guo
Summary: In this study, LiNi1/3Co1/3Mn1/3O2/Li2FeSiO4/C composite materials were successfully synthesized using the sol-gel method. The addition of carbon derived from the carbonization of citric acid improved the electronic conduction and enhanced the electrochemical performance. The LFS/C layer played a crucial role in improving electron and ion transfer and protecting against electrolyte attack.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
E. A. Il'ina, K. V. Druzhinin, T. A. Kuznetsova, M. E. Ozhiganov
Summary: The high resistance at the interface between cathode and solid electrolyte in all-solid-state power sources is effectively addressed by introducing a low-melting additive (Li3BO3) and lithium-conducting solid electrolyte (Li7La3Zr2O12) in the cathode mass LiNi1/3Co1/3Mn1/3O2. The chemical and thermal stability of the solid electrolyte in contact with LiNi1/3Co1/3Mn1/3O2 and Li3BO3 was investigated using XRD and DSC analysis. The addition of 5 wt% Li3BO3 in LiNi1/3Co1/3Mn1/3O2 resulted in close contact between the solid electrolyte and cathode, significantly reducing the interfacial resistance from 45000 to 85 Omega cm(2) at 300 degrees C.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Physics, Multidisciplinary
Yumei Gao, Kaixiang Shen, Ping Liu, Liming Liu, Feng Chi, Xianhua Hou, Wenxin Yang
Summary: The article calculates the conductivity and potential energy of Na-doped LiNi1/3Co1/3Mn1/3O2 using density functional theory, finding that the material exhibits improved conductivity with a sodium doping level of x = 0.05 mol. Sodium doping is shown to reduce potential well and enhance lithium ion removal rate, in agreement with experimental results.
FRONTIERS IN PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Fan Zhao, Feng Han, Shi-wei Zhang, Zhi-jun Zhang
Summary: Increasing drying temperature improves the drying performance and reduces energy consumption of LiNi1/3Co1/3Mn1/3O2 powder, while reducing powder thickness enhances drying rate with little effect on energy saving.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Physical
Abhas Deva, R. Edwin Garcia
Summary: A thermodynamically consistent phase field framework is presented to analyze the effects of internal grain microstructure and particle size polydispersity on lithium transport in cathodes. The study found that particle size distribution significantly affects the populations of lithiated particles, highlighting the importance of designing both interior of particles and particle size distribution simultaneously.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Multidisciplinary
Jian-Hua Wang, Yu Wang, Yu-Zhong Guo, Chang-Wei Liu, Lu-Lu Dan
Summary: Aluminum phosphate coating affects the surface structure and electrochemical properties of NCM cathode material, blocking Li+ insertion-extraction process and increasing surface film resistance, while aiding in stabilizing the solid electrolyte interface film and cell resistance.
Article
Materials Science, Multidisciplinary
Sisi Zhou, Xianggong Zhang, Zhihao Zhang, Songting Liu, Rui Wang
Summary: LiNi1/3Co1/3Mn1/3O2 is a widely used commercial cathode material, but its energy density needs improvement. Coating a LiF layer on the surface of LiNi1/3Co1/3Mn1/3O2 can protect the material, improve interfacial stability, and enhance cyclic performance. The LiF-coated NCM exhibits higher capacity retention rates than the bare sample after 100 cycles. This study suggests that LiF surface layer is a promising method to enhance the electrochemical performance of NCM cathode materials.
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)