Article
Chemistry, Multidisciplinary
Dengfeng Zhou, Junqi Li, Can Chen, Fangchang Lin, Hongming Wu, Jianbing Guo
Summary: An Ru-doped spinel-structured LiNi0.5Mn1.5O4 cathode was prepared by hydrothermal synthesis, and characterized by various techniques. The Ru-doped cathode exhibited improved crystallinity and electrochemical performance compared to undoped samples. This enhancement was attributed to the presence of Ru ions and the transfer of Mn4+ to Mn3+ in the LNMO structure.
Article
Electrochemistry
Zixing Zhao, Haisheng Fang
Summary: A green and economical process based on room-temperature solid-state reactions is developed for synthesizing LiNi0.5Mn1.5O4. The effects of sintering temperature and lithium excess on the structure, morphology, and performance are investigated in detail. Results show that well-crystallized octahedral-like crystals with superior electrochemical performance can be easily synthesized at a moderate sintering temperature of 800°C and a small lithium excess of 3%.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Liping Tong, Zhanggui Hu, Zhen Long, Mei Tang, Xiaoqing Qiu
Summary: This study prepared LiFePO4/C@La2O3 by a simple method, and this material exhibits high lithium ion diffusivity and good cyclic stability. It shows promising applicability in improving the capacity retention of cathode materials in lithium-ion batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yang Zhang, Yingying Li, Ye Song, Jie Liu
Summary: The strategy of Mo doping combined with LiBO2 coating is proposed to improve the performance of NCM material, including reducing cation mixing and surface side reactions, providing a new approach for the commercial utilization of NCM.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Yaqiang Lang, Xianli Sun, Yuan Zhang, Shaoxiong Fu, Shuaipeng Yan, Li Wang, Guangchuan Liang
Summary: This study investigates the effects of different surfactants on LiNi0.5Mn1.5O4 materials and finds that the material synthesized with CTAB exhibits optimal rate performance, while the materials synthesized with SDBS and PVP show better cycling performance.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Electrochemistry
Hong Liu, Peng Zeng, Hao Yu, Xi Zhou, Zhi Li, Manfang Chen, Changqing Miao, Gairong Chen, Tianjing Wu, Xianyou Wang
Summary: The use of polypyrrole as a polysulfides wrap-per, combined with carbon nanotube and oxidized graphene, can enhance the conductivity of cathode material in lithium sulfur batteries. This leads to improved cycling capacity and cycling performance, making it a potential alternative for long-cycling lithium-ion cells.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Ke Wang, Teng Zhao, Nanxiang Zhang, Tao Feng, Li Li, Feng Wu, Renjie Chen
Summary: This study presents a salt-templating method for the fabrication of ultrathin SPAN nanosheets, improving its redox kinetics. In situ Raman analysis reveals the reversible breaking and formation of C-S/S-S bonds in SPAN nanosheets during cycling, demonstrating excellent performance at high current densities.
Article
Electrochemistry
Hamideh Darjazi, S. Javad Rezvani, Sergio Brutti, Francesco Nobili
Summary: This study successfully synthesized prospective cathode materials, modified LiNi0.33Mn0.33Co0.33O2 (NMC333), which demonstrated improved molecular structure and interfacial properties compared to the pristine NMC. Electrochemical impedance spectroscopy was conducted to investigate the kinetics of redox processes and their impact on charge/discharge behavior.
ELECTROCHIMICA ACTA
(2022)
Article
Energy & Fuels
Maciej Nowagiel, Mateusz J. Samsel, Edvardas Kazakevicius, Aldona Zalewska, Algimantas Kezionis, Tomasz K. Pietrzak
Summary: Alluaudite-type materials are attracting attention as potential cathode materials for sodium-ion batteries. Optimized thermal nanocrystallization can enhance the electrical conductivity of these materials. Nanostructured samples with increased electrical conductivity were synthesized. The electrochemical performance was modest with limited gravimetric capacity, indicating the need for further optimization.
Article
Chemistry, Physical
Mingzhe Leng, Jianqiang Bi, Weili Wang, Zheng Xing, Weikang Yan, Xicheng Gao, Jingyu Wang, Rui Liu
Summary: An innovative and convenient method has been developed to stabilize the surface of O3-type NaNi0.45Mn0.3Ti0.2Zr0.05O2 composite electrode using an ultrathin MgO film. The MgO-coated cathode shows superior surface stability and capacity retention under high rate conditions, with three main mechanisms discovered to enhance electrochemical performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Electrochemistry
Nicola Michael Jobst, Marilena Mancini, Markus Hoelzle, Margret Wohlfahrt-Mehrens, Peter Axmann
Summary: Nickel manganese spinel LiNi0.5Mn1.5O4 is a promising cobalt-free active material for lithium-ion battery cathodes due to its high operating voltage. However, extending the operating voltage range causes capacity fading, which is explained by the formation and re-transformation of a specific phase.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Semih Engun, Kamil Burak Dermenci, Umut Savaci, Cemal Can Erdogan, Servet Turan
Summary: The LiNi0.5Mn0.3Co0.2O2 (NMC532) cathode surface was coated with LLZO using the citric acid-aided sol-gel technique. A thin coating layer was obtained and the formation of LaMO3 was observed during high-temperature annealing. The electrochemical performance of the coated samples was improved, with higher capacity retention and lower interface resistance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Dewei Liu, Qijie Zhang, Xiaohong Chen, Penggang Zhu, Fufeng Yan, Xuzhe Wang, Haiyang Dai, Jing Chen, Gaoshang Gong, Cui Shang, Luogang Xie, Xuezhen Zhai
Summary: A simple and environmentally friendly solvothermal method was used to prepare Zn-doped VO2(B) cathode materials, which effectively regulate the structure and improve the electrochemical performance. The sample with 1.5% zinc content showed smaller grain size and higher defect concentration, leading to excellent electrochemical performance.
Article
Engineering, Electrical & Electronic
Cheng Li, Hongxia Chen, Rihuang Nie, Yutian Yang, Hongming Zhou
Summary: In this study, spherical Ce-modified Na0.67Mn0.5Fe0.5O2 materials were successfully synthesized by the hydrothermal method, and Ce doping and CeO2 coating were simultaneously realized. Ce doping enhanced the structural stability and sodium ion diffusion performance, while the CeO2 coating protected the electrode and prevented side reactions. Electrochemical tests showed that the Ce-modified FM-3 sample exhibited good cycling performance and rate capability, with a higher capacity retention and discharge-specific capacity compared to the pristine sample FM-0. This study presents an efficient modification technique for high-performance sodium-ion battery cathode materials.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Si-Yu Yang, Zulipiya Shadike, Wei-Wen Wang, Xin-Yang Yue, He-Yi Xia, Seong-Min Bak, Yong-Hua Du, Hong Li, Zheng-Wen Fu
Summary: Coating a nano-scaled layer of LiPON on the electrode surface can improve the electrochemical stability and increase the cycle life and safety of lithium-ion batteries. The study shows that the coating not only modifies the electrode-electrolyte interface but also enhances the structural stability of the particle surface.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Anand Pariyar, Joseph Stansbery, Rajankumar L. Patel, Xinhua Liang, Amitava Choudhury
JOURNAL OF COORDINATION CHEMISTRY
(2016)
Article
Chemistry, Multidisciplinary
Rajankumar L. Patel, Jonghyun Park, Xinhua Liang
Article
Chemistry, Multidisciplinary
Sai Abhishek Palaparty, Rajankumar L. Patel, Xinhua Liang
Article
Multidisciplinary Sciences
Rajankumar L. Patel, Ying-Bing Jiang, Amitava Choudhury, Xinhua Liang
SCIENTIFIC REPORTS
(2016)
Article
Electrochemistry
Kuber Mishra, Jianming Zheng, Rajankumar Patel, Luis Estevez, Haiping Jia, Langli Luo, Patrick Z. El-Khoury, Xiaolin Li, Xiao-Dong Zhou, Ji-Guang Zhang
ELECTROCHIMICA ACTA
(2018)
Article
Engineering, Chemical
Luis Estevez, Dushyant Barpaga, Jian Zheng, Sandip Sabale, Rajankumar L. Patel, Ji-Guang Zhang, B. Peter McGrail, Radha Kishan Motkuri
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2018)
Article
Chemistry, Multidisciplinary
Xiaofeng Wang, Rajankumar L. Patel, Xinhua Liang
Article
Chemistry, Physical
Haiping Jia, Jianming Zheng, Junhua Song, Langli Luo, Ran Yi, Luis Estevez, Wengao Zhao, Rajankumar Patel, Xiaolin Li, Ji-Guang Zhang
Article
Chemistry, Multidisciplinary
Yan Gao, Rajankumar L. Patel, Kuan-Yu Shen, Xiaofeng Wang, Richard L. Axelbaum, Xinhua Liang
Article
Engineering, Environmental
Xiaofeng Wang, Ariel R. Donovan, Rajankumar L. Patel, Honglan Shi, Xinhua Liang
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2016)
Article
Nanoscience & Nanotechnology
Susmita Sarkar, Rajankumar L. Patel, Xinhua Liang, Jonghyun Park
ACS APPLIED MATERIALS & INTERFACES
(2017)
Article
Chemistry, Multidisciplinary
Anand Pariyar, Siddharth Gopalakrishnan, Joseph Stansbery, Rajankumar L. Patel, Xinhua Liang, Nikolay Gerasimchuk, Amitava Choudhury