Article
Chemistry, Multidisciplinary
Youri Wei, Jun Cheng, Deping Li, Yuanyuan Li, Zhen Zeng, Hongbin Liu, Hongqiang Zhang, Fengjun Ji, Ximing Geng, Jingyu Lu, Lijie Ci
Summary: This study proposes an innovative electrochemical lithium supplement strategy to inhibit the structure collapse and enhance the cycling stability of Lithium-rich manganese-based cathodes. Combining with the superior Li-ion conductor LLZAO, remarkable rate capability is achieved. The excess lithium ions in LLZAO mitigate the spinel-like phase transformation and stabilize the cathode structure. The research findings provide a new pathway for stabilizing LLMO structures.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Leah Nation, Yan Wu, Xiaoming Liu, Miaofang Chi, Yuqin Wu, Yue Qi, Brian W. Sheldon
Summary: The study showed that Si-doping significantly improved the discharge capacity of Li-rich cathodes by around 25%, delayed surface phase transformation, and altered redox behavior. Electron energy loss spectroscopy supported the notion that the surface layer of the cathode had an altered oxygen electronic environment. Si-doping increased oxygen vacancy formation, changed redox couple sequence, effectively controlling the complex charge compensation mechanisms in the cathodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Electrochemistry
Ning Zhang, Haifeng Yu, Aidan Murphy, Matthew Garayt, Svena Yu, Divya Rathore, Adam Leontowich, Toby Bond, Chang-Yong Kim, J. R. Dahn
Summary: Nickel-rich layered positive electrode materials are commonly made using a co-precipitation-sintering method. However, this method results in a loss of spherical morphology which affects performance. In this study, a all-dry synthesis method was developed to produce single crystal materials with comparable or even better properties than those made using the co-precipitation method.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Sung-Beom Kim, Hyeona Kim, Deok-Hye Park, Ji-Hwan Kim, Jae-Hoon Shin, Jae-Sung Jang, Sang-Hyun Moon, Jin-Hyuk Choi, Kyung-Won Park
Summary: Ni-rich cathode materials doped with varying amounts of F using a solid-state reaction method show improved cycling performance due to strong bonding between transition metals and F, as well as enhanced Li+ ion transport behavior. However, when the F doping level exceeds the optimal amount, Li/Ni antisite defects cause deteriorated Li+ ion transport, leading to decreased performance in lithium-ion batteries.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Bo Wang, Jing Cui, Zhaojin Li, Huan Wang, Di Zhang, Qiujun Wang, Huilan Sun, Zhilin Hu
Summary: Surface F-doping of Li-rich cathode materials can suppress oxygen release and maintain anionic redox reaction, resulting in significantly improved specific capacity and cycle stability of the battery.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Applied
Qi-Qi Qiu, Shan-Shan Yuan, Jian Bao, Qin-Chao Wang, Xin-Yang Yue, Xun-Lu Li, Xiao-Jing Wu, Yong-Ning Zhou
Summary: The electrochemical performance of Ni-rich layered oxide can be significantly improved by appropriate F substitution, reducing cation mixing, stabilizing crystal structure, and enhancing Li ion transport kinetics. The newly developed LiNi0.9Co0.05Mn0.05O1.99F0.01 cathode exhibits high capacity and excellent cycle stability.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Physical
Meng Wang, Yongqiang Han, Mo Chu, Lin Chen, Meng Liu, Yijie Gu
Summary: The effects of cerium doping and the formation of layered-spinel hetero-structure on the electrochemical properties of lithium-rich cathode material were studied. Cerium doping and formation of spinel phase facilitated lithium ion diffusion and inhibited structural collapse during cycling, leading to improved cycling stability and rate capability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Electrochemistry
Ali Yalcin, Muslum Demir, Mehmet Oguz Guler, Mehmet Gonen, Mesut Akgun
Summary: A one-pot approach was used to prepare Sn-doped Li-rich NMC cathode materials for next-generation batteries. The optimized Li-NMC-Sn05 cathode exhibited improved discharge capacity, rate capability, and cyclic performance due to better interface and structural stability as well as reduced ohmic resistance.
ELECTROCHIMICA ACTA
(2023)
Article
Engineering, Chemical
Jinbo Zeng, Yue Shen, Xiufeng Ren, Xiang Li, Yanxia Sun, Guotai Zhang, Zhaowei Wu, Shenglong Zhu, Chunxi Hai, Yuan Zhou
Summary: This study investigates the effect of F doping on the performance of Ni-rich layered cathode materials and demonstrates that F doping can improve the rate performance and structural stability, providing a potential solution for enhancing the performance of lithium-ion batteries.
Review
Chemistry, Physical
Xin Cao, Yu Qiao, Min Jia, Ping He, Haoshen Zhou
Summary: This study reviews the potential application of Li-rich and Li-excess oxides as cathode materials for next-generation Li-ion batteries, discusses the challenges in using Li-excess oxides, and explores mechanisms to address these issues. Future research directions in the field are also proposed based on advanced characterizations and theory calculations.
ADVANCED ENERGY MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Trent Seaby, Tong-En Lin, Yu-Xiang Hu, Qing-Hong Yuan, Lian-Zhou Wang
Summary: Li-rich materials have high capacity and are being considered as alternatives to current cathode materials for Li-ion batteries. Fluorine doping is an effective technique to improve capacity, cycling stability, and rate performance. Bulk F-doping significantly improves rate performance and cycling stability, while surface F-doping has similar effects on capacity and stability but hinders rate performance.
Article
Chemistry, Inorganic & Nuclear
Xiaoyan Xie, Jiaxiang Cui, Zhenkun Liu, Zhuo Yao, Xiaokai Ding, Chenyu Liu, Dong Luo
Summary: This research develops a method to enhance the performance of Li-rich layered oxide cathodes by treating the surface of the material with citric acid. The treatment forms a surface spinel layer that improves the capacity and voltage retention of the cathode material.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
Changmei Jiao, Meng Wang, Bing Huang, Mengxia Zhang, Guodong Xu, Yuxin Liu, Yunfeng Zhao, Xuebu Hu
Summary: To enhance the electrochemical performance and structural stability of Li1.2Mn0.54Ni0.13Co0.13O2, Li3PO4 surface modification and single crystallization are utilized. The results of electrochemical characterization indicate that the single crystal cathode material modified with Li3PO4 has excellent cycle stability and Li+ diffusion coefficient. Li-ion conductor Li3PO4 provides diffusion channels for Li+ migration and inhibits phase transition. Coating Li3PO4 on Li-rich cathode materials is an effective approach to improve their electrochemical performance and structure stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Yijia Shao, Chaozhong Li, Luoqian Li, Jian Liu, Shijun Liao
Summary: In this study, a superior lithium-rich manganese-based cathode material was developed through structure engineering, achieving high specific energy density and good cycling performance. The research provides a pathway for the development of high-energy lithium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Engineering, Environmental
Katarzyna Redel, Andrzej Kulka, Katarzyna Walczak, Anna Plewa, Emil Hanc, Mateusz Marzec, Li Lu, Janina Molenda
Summary: This paper discusses the advantages of high-voltage Li-rich oxides as cathode materials for Li-ion batteries, analyzes the relationship between the structure evolution and electrochemical performance of the new Li-Mn-Ni-O group, and examines the origin of the extraordinary reversible capacity of Li [Li0.27Mn0.63Ni0.1]O-2.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Ceramics
Zhenlu Yu, Xingyu Qu, Aichun Dou, Yu Zhou, Mingru Su, Yunjian Liu
Summary: Li-excess cation-disordered rocksalt oxides with both cationic and anionic redox capabilities have raised challenges in large polarization and poor rate performance due to anionic evolution and poor electronic conductivity. A facile strategy of carbon coating using moderate mass ratio of carbon precursor and calcination temperature has been shown to significantly improve the electrochemical properties of Ni-based cation-disordered oxides, leading to enhanced specific capacity and rate performance. The carbon coating process increases tetrahedron height for easy Li diffusion, reduces polarization, protects cathode, retards SEI layer thickening, and enhances electronic conductivity.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Xueli Chen, Ke Liu, Qianwan Qin, Zhenlu Yu, Meiqing Li, Xingyu Qu, Yu Zhou, Aichun Dou, Mingru Su, Yunjian Liu
Summary: In this study, carbon-coated TT-Nb2O5 materials were designed and synthesized through solid state method, showing high specific capacity and satisfactory rate properties.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Meiqing Li, Anbang Su, Qianwan Qin, Yuan Qin, Aichun Dou, Yu Zhou, Mingru Su, Yunjian Liu
Summary: Columbite CuNb2O6 anode materials prepared through solid-state reaction at high temperature exhibit exceptional battery performance, including remarkable rate capability and outstanding cyclic stability, suggesting their potential application in lithium-ion batteries.
Article
Engineering, Environmental
Yu Zhou, Shihao Feng, Pengfei Zhu, Huajun Guo, Guochun Yan, Xinhai Li, Mingru Su, Yunjian Liu, Zhixing Wang, Jiexi Wang
Summary: In this study, a hierarchical electronic/ionic conducting shell was cleverly constructed on nano-Si particles to enhance their stability and conductivity, effectively addressing the issue of surface oxidation. The optimized material exhibited outstanding cycle stability and rate capability, retaining 70.2% of its capacity after 200 cycles. This work provides a promising strategy for promoting the practical applications of Si nanoparticles as anode materials for lithium ion batteries.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Mingru Su, Tian Gao, Guangyan Zhu, Yepeng Chai, Yu Zhou, Jinlin Li, Kai Fu, Aichun Dou, Yunjian Liu
Summary: A facile solid phase method using SnSe as a precursor was proposed for the preparation of SnO2, resulting in nearly pure SnO2 material. The as-prepared SnO2 exhibited promising electrochemical performance as an anode material for Li-ion batteries, with high initial charge capacity and good rate performance.
Article
Chemistry, Physical
Xiaoyun Zhang, Panpan Zhang, Tianyi Zeng, Zhenlu Yu, Xingyu Qu, Xiaoqi Peng, Yu Zhou, Xiaoguang Duan, Aichun Dou, Mingru Su, Yunjian Liu
Summary: The study applied a one-step high-temperature solid-phase sintering method to form a Ta2O5 protective layer on the surface of high-nickel materials, significantly enhancing the structural stability and improving the cycling performance of NCA at high rates.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Xingyu Qu, He Huang, Tao Wan, Long Hu, Zhenlu Yu, Yunjian Liu, Aichun Dou, Yu Zhou, Mingru Su, Xiaoqi Peng, Hong-Hui Wu, Tom Wu, Dewei Chu
Summary: An integrated surface coating/doping strategy has been developed to improve the structural stability and electrochemical performance of high-nickel layered oxides, leading to enhanced cycling stability and capacity retention of batteries. The strategy involves diffusion of titanium ions from a thin coating layer, formation of a protective layer on the material surface, and Ti4+ doping to enhance lithium ion diffusion and reduce side reactions, ultimately benefiting the cycling stability of the cathode.
Review
Chemistry, Physical
Ahmad Naveed, Amjad Ali, Tahir Rasheed, Xuri Wang, Pan Ye, Xiaowei Li, Yu Zhou, Su Mingru, Yunjian Liu
Summary: Aqueous rechargeable Zn batteries have significant potential for energy storage applications, but face challenges with Zn anode that require surface engineering for stabilization. Surface engineering of Zn anode through artificial protective layers/coatings is an emerging and promising research direction.
JOURNAL OF POWER SOURCES
(2022)
Article
Materials Science, Multidisciplinary
Yu Zhou, Peng-Hu Niu, Zhong-Hua Li, Pan-Pan Zhang, Ming-Ru Su, Ai-Chun Dou, Xiao-Wei Li, Yun-Jian Liu
Summary: The modification of Si anode with an aluminosilicate matrix coating layer improves the stability and performance of silicon, attributing to the synergistic composite coating layer which inhibits interfacial side chemical reactions and buffers volume change of Si.
Article
Electrochemistry
Mingru Su, Yichang Chen, Hongjia Liu, Jinlin Li, Kai Fu, Yu Zhou, Aichun Dou, Yunjian Liu
Summary: This study investigates the decay mechanism of structure and electrochemical properties of LiNi0.8Co0.1Mn0.1O2 materials during storage. It is found that the instability of Ni3+ leads to the appearance of NiO rock salt phase on the material's surface, accompanied by the formation of reactive oxygen species. The material reacts with H2O and CO2 in the air to form surface residual lithium compounds, hindering the diffusion kinetics of Li+ and resulting in capacity loss.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Ceramics
Xueli Chen, Xianhua Liu, Shuang Hao, Jingqi Wang, Naveed Ahmad, Panpan Zhang, Pei Cui, Mingru Su, Aichun Dou, Yu Zhou, Yunjian Liu
Summary: Niobium-based oxides have potential as anode materials for LIBs, but suffer from poor electronic conductivity. This study demonstrates that doping with W6+ can improve the electrical conductivity and prepare high-performance hexagonal orthorhombic W0.025Nb1.97O5 material.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Penghu Niu, Yu Zhou, Zhonghua Li, Yuyang Xiao, Mingru Su, Shuai Zhou, Xiaochuan Hou, Yunjian Liu
Summary: A coralline-like Si/Ni/C anode material was proposed by utilizing a metal-organic framework as the metal and carbon source. The in situ formed interlayer of NiSi2 at the interface of the carbon skeleton and Si nanoparticles improved the compatibility and gradient interface between them. The composite demonstrated excellent reversible capacity and rate capability due to the synergistic effects of stable structural integrity and good interface stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Mingru Su, Meiqing Li, Kuidong He, Tao Wan, Xueli Chen, Yu Zhou, Panpan Zhang, Aichun Dou, Haolan Xu, Chunsheng Lu, Renheng Wang, Dewei Chu, Yunjian Liu
Summary: Copper niobate nanoparticles have been demonstrated to be a promising anode material for lithium-ion batteries, exhibiting high capacity, ultra-fast charging, and safety characteristics. The nanoparticles possess a unique crystal structure and morphology that provide structural stability and enhanced Li+ transfer kinetics. These nanoparticles show significant pseudocapacitive behavior and excellent electrochemical performances, with high capacity retention and impressive rate performance even at high charging rates.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Hanwei Zhang, Xiaoyun Zhang, Tianyi Zeng, Aichun Dou, Panpan Zhang, Mingru Su, Yu Zhou, Yunjian Liu
Summary: By applying a LiTaO3 coating and Ta5+ doping strategy, the irreversible phase transition and interfacial side reactions of Ni-rich ternary cathode materials during long-term cycling are effectively restrained, leading to enhanced rate capability and cycling life.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Mingru Su, Jinlin Li, Kuidong He, Kai Fu, Penghu Nui, Yichang Chen, Yu Zhou, Aichun Dou, Xiaochuan Hou, Yunjian Liu
Summary: This study addresses the issue of volume expansion in antimony anodes during lithium-ion battery operation by synthesizing a NiSb alloy embedded in nitrogen-doped carbon. The composite structure effectively mitigates volume expansion and improves cycling stability and high-rate performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)