Article
Energy & Fuels
Fuead Hasan, Ahmed Adel A. Abdelazeez, Mohamed Rabia, Hyun Deog Yoo
Summary: In this study, two strategies were employed to improve the intercalation kinetics of lithium cobalt oxide (LCO) cathode for high-performance lithium-ion batteries. Firstly, ionic pillars of various ions were doped to stabilize the structure at high voltage. Secondly, lithium-ion conducting lithium phosphate (Li3PO4) was coated to minimize the formation of resistive surface films. The combination of these strategies resulted in a synergetic effect that significantly improved the cathode's energy density, thermal stability, cycling stability, and rate capability.
Article
Chemistry, Physical
Zhangxian Chen, Qiuge Zhang, Weijian Tang, Deli Li, Juxuan Ding, Cheng Huang, Zeheng Yang, Weixin Zhang, Guoqin Wu, Huayong Chen
Summary: This study presents a covalent interfacial engineering method for the uniform Li2ZrO3 coating on LNCM811 materials, which significantly improves the capacity retention of the cathode materials. The strong covalent interactions between citric acid and the NCM811 precursor effectively promote the adsorption of ZrO2 coating species, leading to the formation of uniform Li2ZrO3 coating layers on the cathode particles. The uniform Li2ZrO3 coating endows LNCM811 cathode materials with exceptional high capacity retention of 98.7% after 300 cycles at 1 C, demonstrating the great potential of covalent interfacial engineering for enhancing the cycling capability of Ni-rich lithium-ion battery cathode materials.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Energy & Fuels
Xiaogang He, Hang Luo, Kai Yong, Meng Yao, Yun Zhang
Summary: The stability and performance of LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode material can be improved by using LiAlO2 and Li2SiO3 as dual coating materials. The AS-NCM811-based battery exhibits remarkable cyclic ability and rate performance in a wide temperature range.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Physical
Changkun Song, Wangjun Feng, Zhaojiao Shi, Zhaoyu Huang
Summary: In this study, layered cathode material Li1.2Mn0.54Ni0.13Co0.13O2 was prepared using the sol-gel method and then coated with TiO2 nanoparticles. The coated materials showed improved structure and morphology, leading to significant enhancement in electrochemical performance.
Article
Electrochemistry
Yongjiang Sun, Zhedong Liu, Xiaochun Chen, Xiaoping Yang, Fuwei Xiang, Wen Lu
Summary: A modified lithium nickel cobalt manganese oxide cathode material with superior environmental, thermal stabilities, and electrochemical performances has been successfully developed by an in-situ co-modification approach without the need for additional steps and reagents. The new method exhibits excellent performance in terms of high discharge capacity, rate capability, and long cycle life.
ELECTROCHIMICA ACTA
(2021)
Article
Electrochemistry
Zi Yang, Zhimin Li
Summary: A silicon-based coating is proposed as a solution for the interfacial side reactions and HF erosion of high-nickel LiNi0.80Co0.15Al0.05O2 (NCA) cathode material in lithium-ion batteries. The coating, formed by hydrolysis condensation between tetraethyl orthosilicate (TEOS) and trace amounts of water on the NCA surface, successfully prevents direct contact between the active material and the electrolyte, inhibiting interfacial side reactions. Experimental results show that the coated NCA exhibits excellent cycling performance.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2022)
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
Engineering, Environmental
Zhe Huang, Ruijun Qiu, Keyi Lin, Jujun Ruan, Zhenming Xu
Summary: This study introduces a new method to recover valuable materials from spent lithium-ion batteries through in situ recombination, which is more cost-effective and environmentally friendly. It also provides new insights into the recovery of high-value products from multi-element mixed wastes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Electrochemistry
Wei Shan, Hongxu Zhang, Chen Hu, Yu Zhou, Kwok-ho Lam, Shaofeng Wang, Xianhua Hou
Summary: By synthesizing a LiAlO2@Al2O3 dual-modified coating on NCA cathode material particles, the study demonstrates significant improvement in cycle performance and capacity retention at high currents.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Satish Kumar Mylavarapu, Fulya Ulu Okudur, Saeed Yari, Dries De Sloovere, Jan D'Haen, Ahmed Shafique, Marlies K. Van Bael, Mohammadhosein Safari, An Hardy
Summary: In this study, a cost-effective chemical solution deposition route of a thin TiOx shell on LiNi0.6Mn0.2Co0.2O2 (NMC-622) particles was demonstrated to improve the electrochemical performance. Surface modification with TiOx was found to enhance rate performance and reduce charge-transfer resistance, showcasing the beneficial impact on the electrochemical performance of NMC-622 positive electrodes in lithium-ion battery applications.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Ceramics
Tanxin Wang, Mingliang Yuan, Yue Liu, Hanhui Liu, Shuai Xie, Jingjun Liu, Junqing Yan
Summary: A uniform and thin Li2O-B2O3-LiBr-glass coating was deposited on LNCM811 to improve its electrochemical properties, resulting in reduced capacity fading and increased capacity retention. LBBrO@LNCM-2 exhibited higher discharge capacity and capacity retention at high rates compared to the pristine material.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Chemical
Weijian Tang, Zhangxian Chen, Haijian Huang, Muhammad Irfan, Cheng Huang, Zeheng Yang, Weixin Zhang
Summary: An effective PVP-bridged coating method is introduced to form a Li-ion conductor gamma-LiAlO2 nanolayer on the surface of the Li-rich cathode material, leading to improved rate capability and cycling stability. The coated sample also shows enhanced thermal stability and higher Li+ diffusion coefficient compared to the uncoated sample. This study provides a new perspective in material design for high-performance Li-rich cathode materials for lithium-ion batteries.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Rahul Kumar, Premakumar Yanda, A. Sundaresan
Summary: The study presents the detailed structural and magnetic properties of Li2Mn3O7, revealing its rhombohedral structure, glassy behavior, and cluster-glass characteristics. The presence of a triangular lattice leads to a disordered ground state as evidenced by competing exchange interactions.
Article
Chemistry, Physical
Zhenshen Li, Ziyun Zhao, Siyuan Pan, Yaogang Wang, Sijia Chi, Xuerui Yi, Junwei Han, Debin Kong, Jing Xiao, Wei Wei, Shichao Wu, Quan-Hong Yang
Summary: A covalent coating strategy has been developed to establish a robust encapsulation structure, addressing the issue of physical-electrical disconnections between carbon shells and silicon microparticulate with size variations. The obtained covalent Si-C bonds enable a dynamic connection between SiMP and graphene layers, improving the cycling stability of thick SiMP anodes.
ADVANCED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Xin Xie, Lei Sheng, Xingxu Gao, Hao Gong, Ling Yang, Min Cao, Datuan Li, Yaozong Bai, Gaojun Liu, Haoyu Dong, Tao Wang, Xianli Huang, Jianping He
Summary: A lithiated molecular sieve (LMS) ceramic particles were designed as a functional separator coating to inhibit lithium dendrites, showing improved ionic conductivity and lithium-ion transfer efficiency. The composite separator successfully achieved dendrite-free lithium deposition morphology and enhanced coulombic efficiency in Li//Cu half-cells. The strategy of using this functional composite separator is expected to improve the electrochemical performance of lithium metal batteries.
ACS APPLIED POLYMER MATERIALS
(2023)
