Article
Materials Science, Multidisciplinary
Dan Sun, Rongting Guo, Yiju Lv, Wei Li, Mingjun Lu, Qiumei Wei, Zheng Liu, Guo-Cheng Han
Summary: Na2MnPO4F and Ti3C2-carbon quantum dots (CQDs) nanocomposites were prepared and investigated for their structure and electrochemical performance as a lithium-ion battery cathode material. Ti3C2-CQDs were found to improve the cycle performance, rate performance and capacity retention rate of Na2MnPO4F, demonstrating their significance in enhancing the electrochemical performance of polyanionic compounds.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Energy & Fuels
Govindharaju Radhika, Palanisamy Rajkumar, Rengapillai Subadevi, Marimuthu Sivakumar
Summary: A sulfur/MnO2/graphene oxide (GO) composite has been prepared and used as the cathode for Li-S batteries, showing enhanced cycling performance with 70% sulfur content. The presence of sulfur in orthorhombic structure and carbon in the composite has been confirmed through XRD and Raman analysis. Effective suppression of polysulfides contributes to the improved capacity and stability of the material for Li-S battery application.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Electrochemistry
David Kitsche, Florian Strauss, Yushu Tang, Nikolai Bartnick, A-Young Kim, Yuan Ma, Christian Kuebel, Juergen Janek, Torsten Brezesinski
Summary: Inorganic solid-state batteries have limitations compared to conventional liquid electrolyte-based lithium-ion batteries. The search for advanced coatings to protect the cathode materials in solid-state batteries is a challenge. This study successfully modified the surface of a Ni-rich cathode material using a sol-gel chemistry method, resulting in improved protection and performance.
BATTERIES & SUPERCAPS
(2022)
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
Chemistry, Physical
Sunwook Kim, Sungmin Na, Joonchul Kim, Tae Hwan Jun, Myoung Hwan Oh, Kyoungmin Min, Kwangjin Park
Summary: This study focuses on finding a coating material to replace cobalt in order to address the issues of Ni-rich cathode materials. The Ni/Hf coated sample shows higher initial capacity, improved rate capability, higher Li-ion diffusion coefficient, reduced charge-transfer resistance, enhanced cycle retention, and the ability to suppress side reactions and large volume change compared to other coatings and the pristine sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Ngo Quy Quyen, To Van Nguyen, Hoang Huu Thang, Pham Manh Thao, Nguyen Van Nghia
Summary: Adding carbon to the surface of P2-type sodium-lithium-manganese oxide material improves its rate capacity and specific capacity, making the carbon-coated NLM@C material a promising cathode material for sodium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Zhong Li, Peiyue Yang, Zhongxiang Zheng, Qiyun Pan, Yisi Liu, Yao Li, Jinnan Xuan
Summary: The use of electrochemically active MnO2 as a coating material on LTMO cathode was found to enhance electrochemical performance, offering additional capacity and improved cycling stability.
Article
Chemistry, Physical
Haifeng Li, Indrani Roy, Mateusz Starczewski, John Freeland, Jordi Cabana
Summary: A combination of oxygen redox and Mn-based oxides is considered the best option for high-energy-density Li-ion batteries, and the disordered rock-salt Li4Mn2O5 has shown promising capacity and reversibility. In this study, the charge compensation mechanism was investigated through Mn/OK-edge X-ray absorption spectroscopy (XAS). The results provide direct evidence of Mn redox participation during charging and highlight the role of a disordered structure in maintaining reversible redox chemistry for high-energy density cathode materials.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Xiaoming Xie, Baichao Zhang, Guorong Hu, Ke Du, Jiahui Wu, Yongzhi Wang, Zhanggen Gan, Ju Fan, Haodong Su, Yanbing Cao, Zhongdong Peng
Summary: This study presents an eco-friendly synthesis method for LiFe0.25Mn0.75PO4/C@rGO materials, investigating the effects of different processes on the morphology and performance of the materials to determine the optimal conditions for the best performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
M. Jayachandran, Helen Annal Therese, T. Vijayakumar
Summary: The Lithium and Manganese-rich layered oxides with the formula Li1.2Ni0.1Mn0.6Co0.1O2 (LMR-NMC) are considered highly promising cathode materials for next-generation lithium-ion batteries due to their high energy densities, low cost, high thermal stability, and environmental safety. This study synthesized LMR-NMC oxides with different morphologies and analyzed their crystal structures and electrochemical properties. The nanoplatelet-like morphology (LMR-NMC-A) exhibited better performance than the cubic-like morphology (LMR-NMC-B). These findings confirm the suitability of nanoplatelet-like LMR-NMC-A as a cathode material for lithium-ion batteries.
SURFACES AND INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Chao Zou, Yun Huang, Ling Zhao, Wenhao Ren, Zhixing Zhao, Jiapin Liu, Xing Li, Mingshan Wang, Bingshu Guo, Yuanhua Lin
Summary: This study utilizes branched polyethyleneimine as a functional binder to address the electrode deterioration and capacity decay caused by the dissolution of transition metal ions. The binder can effectively absorb soluble transition metal ions, reduce the loss of active materials, and achieve uniform distribution of key components. This leads to improved rate capability and cycle stability of the battery.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Chunliu Li, Banglei Zhao, Junfeng Yang, Linchao Zhang, Qianfeng Fang, Xianping Wang
Summary: Li2ZrO3-coated and Al-doped micro-sized monocrystalline LiMn2O4 powder shows superior cycling and rate performance, attributed to the synergistic effect of Al-doping and Li2ZrO3-coating.
Article
Chemistry, Multidisciplinary
Fei Cao, Weihao Zeng, Jiawei Zhu, Jinsheng Xiao, Zilan Li, Ming Li, Rui Qin, Tingting Wang, Junxin Chen, Xiaoli Yi, Jiexi Wang, Shichun Mu
Summary: By introducing antimony (Sb) ions, the migration of manganese ions can be effectively inhibited and the structure can be stabilized, resulting in higher discharge specific capacity and energy density in lithium-ion batteries.
Article
Chemistry, Physical
Armance Sagot, Lorenzo Stievano, Valerie Pralong
Summary: This study reports the synthesis and electrochemical activity of a novel polymorph of K3MnO4, which has a 0D-type structure composed of isolated MnO4 tetrahedra and K+ ions. A reversible charge capacity of almost one K+ per unit formula at an average voltage of 2.3 V vs K+/K is achieved, leading to the reversible formation of K2MnO4 through a biphasic process.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Vandana, Reema Gupta, Anisha Chaudhary, R. P. Tandon, Vinay Gupta, Monika Tomar
Summary: In this study, Li-rich layered Li(Li0.25Co0.37Mn0.38)O-2 (LiCMO) material was prepared using sol-gel technique. The effect of calcination temperature on the structural and morphological characteristics of LiCMO was investigated. The electrochemical performance of LiCMO/graphite (Cell 1) and LiCMO/Li (Cell 2) was studied, showing different properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(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)