The nature of irreversible phase transformation propagation in nickel-rich layered cathode for lithium-ion batteries

2021 ◽  
Author(s):  
Feng Wu ◽  
Na Liu ◽  
Lai Chen ◽  
Ning Li ◽  
Jinyang Dong ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Irreversible Phase Transformation

Research on the Phase Transformation of Silicon Anode Material for Lithium Ion Batteries by Constant-Capacity Discharging

2010 ◽  
Vol 129-131 ◽  
pp. 621-625
Author(s):  
Zhong Sheng Wen ◽  
Mei Kang Cheng ◽  
Jun Cai Sun
Keyword(s):  
Phase Transformation ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Lithium Ion ◽  
Silicon Anode ◽  
Lithium Insertion ◽  
Irreversible Capacity ◽  
High Theoretical Capacity ◽  
Structure Collapse ◽  
High Structure

Silicon is the most attractive anode candidate for lithium ion batteries for its high theoretical capacity. However, it is difficult to be applied as anode material of lithium ion batteries for its poor cyclability and high irreversible capacity caused by structure collapse during the course of lithium insertion-extraction. Considering finding an efficient way to alleviate the crystal transformation during lithium insertion, the silicon anode with the highest theoretical capacity of all know non-lithium substances, was discharged by controlling its insertion capacity. The phase transformation during lithium ion insertion into silicon was investigated in detail. The lithium-insertion phases produced by constant capacity processing consist of Li-Si binary crystals and amorphous host phase. A stable Li12Si7 phase was found under different discharge conditions. This Li-Si binary phase formed by constant capacity showed high structure-reversibility during lithium insertion-extraction. The enhanced cyclability of silicon anode during constant-capacity discharging benefits from the mixture phases of silicon amorphous and crystal Li-Si alloy.

scholarly journals Stress fields in hollow core–shell spherical electrodes of lithium ion batteries

2014 ◽  
Vol 470 (2172) ◽  
pp. 20140299 ◽  
Author(s):  
Yingjie Liu ◽  
Pengyu Lv ◽  
Jun Ma ◽  
Ruobing Bai ◽  
Hui Ling Duan
Keyword(s):  
Phase Transformation ◽  
Lithium Ion Batteries ◽  
Hydrostatic Stress ◽  
Phase Interface ◽  
Hollow Structure ◽  
Lithium Ion ◽  
Structure Design ◽  
Interface Stress ◽  
Effective Capacity ◽  
Stress Surface

This paper presents a comprehensive model coupling the effects of hydrostatic stress, surface/interface stress, phase transformation and the structure of electrodes. First, the governing equation of moving phase interface with hydrostatic stress is established. Under the effect of hydrostatic stress, phase transformation process is much faster, which means phase transformation time is overestimated in previous publications. Then, a cross-scale analysis is presented to investigate the size effect owing to hydrostatic stress, surface stress and interface stress separately, which concludes that the effect of hydrostatic stress is significant for the stress field in microelectrode particles, whereas that of surface/interface stress is highlighted in nano-ones. Finally, an electrochemical variable ‘efficiency’ (ratio of effective capacity over total capacity) is defined. The advantages of hollow structure electrodes on stress and efficiency are analysed. The present model is helpful for the material and structure design of electrodes of lithium ion batteries.

Power characteristics of spinel cathodes correlated with elastic softness and phase transformation for high-power lithium-ion batteries

2017 ◽  
Vol 5 (7) ◽  
pp. 3404-3411 ◽  
Author(s):  
Jin-Myoung Lim ◽  
Rye-Gyeong Oh ◽  
Woosuk Cho ◽  
Kyeongjae Cho ◽  
Maenghyo Cho ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Electrochemical Properties ◽  
Phase Transformations ◽  
Lithium Ion Batteries ◽  
High Power ◽  
Lithium Ion ◽  
Transformation Kinetics ◽  
Power Characteristics ◽  
Phase Transformation Kinetics ◽  
Mechanical Deformations

We present the phase transformation kinetics associated with mechanical deformations and electrochemical properties of LiNi0.5Mn1.5O4 (LNMO) and LiNi0.5Mn1.5−xTixO4 (LNMTO) that elucidate the correlation between power characteristics, mechanical deformations, and phase transformations.

scholarly journals Imaging the Phase Transformation in Single Particles of the Lithium Titanate Anode for Lithium-Ion Batteries

2021 ◽  
Author(s):  
Tadesse A. Assefa ◽  
Ana F. Suzana ◽  
Longlong Wu ◽  
Robert J. Koch ◽  
Luxi Li ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Lithium Titanate ◽  
Single Particles

Hot-Chemistry Structural Phase Transformation in Single-Crystal Chalcogenides for Long-Life Lithium Ion Batteries

2017 ◽  
Vol 9 (24) ◽  
pp. 20603-20612 ◽  
Author(s):  
Fathy M. Hassan ◽  
Qianqian Hu ◽  
Jing Fu ◽  
Rasim Batmaz ◽  
Jingde Li ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Single Crystal ◽  
Lithium Ion Batteries ◽  
Structural Phase ◽  
Lithium Ion ◽  
Structural Phase Transformation ◽  
Long Life

First-principles study on properties of Sn-doped LiCoO2 for Li-ion batteries

2021 ◽  
Author(s):  
Ruihan Yang ◽  
Mengke Guan ◽  
Ruirui Zhao ◽  
Qiong Luo
Keyword(s):  
Phase Transformation ◽  
Lithium Ion Battery ◽  
High Voltage ◽  
First Principles ◽  
Lithium Ion ◽  
Li Ion Batteries ◽  
Rocksalt Structure ◽  
Battery Electrode ◽  
Li Ion ◽  
Irreversible Phase Transformation

The key for the application of LiCoO2 as lithium-ion battery electrode under high voltage is to suppress the irreversible phase transformation from the layered to the spinel/rocksalt structure during cycling....

CuS2 sheets: a hidden anode material with a high capacity for sodium-ion batteries

2021 ◽  
Author(s):  
Shaohua Lu ◽  
Weidong Hu ◽  
Xiaojun Hu
Keyword(s):  
Lithium Ion Batteries ◽  
Anode Material ◽  
Low Cost ◽  
High Capacity ◽  
Lithium Ion ◽  
Sodium Ion ◽  
Sodium Ion Batteries

Due to their low cost and improved safety compared to lithium-ion batteries, sodium-ion batteries have attracted worldwide attention in recent decades.

Sign in / Sign up

Export Citation Format

Share Document