Preliminary study of structural changes in Li2MnSiO4 cathode material during electrochemical reaction

2016 ◽  
Vol 09 (04) ◽  
pp. 1641003 ◽  
Author(s):  
Michał Świętosławski ◽  
Marcin Molenda ◽  
Marta Gajewska
Keyword(s):  
Cathode Material ◽  
Structural Changes ◽  
Electrochemical Reaction ◽  
Electrochemical Reactions ◽  
Li Ion Batteries ◽  
Lithium Ions ◽  
Transmission Electron ◽  
Working Cell ◽  
Li Ion ◽  
Preliminary Study

In this paper, we present exsitu observations of a structure of particular Li2MnSiO4 grains at different states of charge (SOC). The goal of these studies is structural analysis of Li2MnSiO4 cathode material for Li-ion batteries at different stages of electrochemical reaction using transmission electron microscopy. Performed analysis suggests that amorphization process of Li2MnSiO4 is not directly connected with lithium ions deintercalation but with additional electrochemical reactions running in the working cell.

Insights into the Electrochemical Reaction Mechanism of a Novel Cathode Material CuNi2(PO4)2/C for Li-Ion Batteries

2018 ◽  
Vol 10 (4) ◽  
pp. 3522-3529 ◽  
Author(s):  
Wengao Zhao ◽  
Guiming Zhong ◽  
Jian Zheng ◽  
Jianming Zheng ◽  
Junhua Song ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Cathode Material ◽  
Electrochemical Reaction ◽  
Li Ion Batteries ◽  
Li Ion

Rate Dependent Structural Changes, Cycling Stability, and Li-Ion Diffusivity in a Layered-Layered Oxide Cathode Material after Prolonged Cycling

2021 ◽  
Author(s):  
Songyoot Kaewmala ◽  
Wanwisa Limphirat ◽  
Visittapong Yordsri ◽  
Jeffrey Nash ◽  
Sutham Srilomsak ◽  
...  
Keyword(s):  
Cathode Material ◽  
Cathode Materials ◽  
Large Scale ◽  
Structural Changes ◽  
Cycling Stability ◽  
Li Ion Batteries ◽  
Layered Oxide ◽  
Rate Dependent ◽  
Oxide Cathode ◽  
Li Ion

Li-rich layered oxide (LLO) cathode materials, xLi2MnO3·(1-x)LiCoO2 (0<x<1, M= Mn, Ni, Co, etc.) are considered promising cathode materials in Li-ion batteries for large scale applications.

scholarly journals Overcharge Cycling Effect on the Surface Layers and Crystalline Structure of LiFePO4 Cathodes of Li-Ion Batteries

Energies ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4652 ◽  
Author(s):  
Evgenii V. Beletskii ◽  
Elena V. Alekseeva ◽  
Dar’ya V. Spiridonova ◽  
Andrei N. Yankin ◽  
Oleg V. Levin
Keyword(s):  
Cathode Material ◽  
Crystalline Structure ◽  
Structural Changes ◽  
Electrochemical Cells ◽  
Li Ion Batteries ◽  
Voltage Profile ◽  
Surface Layers ◽  
Lifepo4 Cathode ◽  
Li Ion ◽  
Capacity Surface

Electrochemical cells using LiFePO4 cathode material are considered one of the safest and most resistant to overcharging among Li-ion batteries. However, if LiFePO4-based electrodes are exposed to high potentials, surface and structural changes may occur in the electrode material. In this study Li/LiFePO4 half-cells were overcharged under different modes with variable cut-off voltages and charge currents. The change in voltage profile, discharge capacity, surface layers composition, and crystalline structure were characterized after overcharge cycles. It was demonstrated that the cathode material is resistant to short-term overcharging up to 5 V, but undergoes irreversible changes with increasing overcharge time or potential. Thus, despite the well-known tolerance of LiFePO4-based batteries to overcharge, a long overcharge time or high cut-off voltage leads to destructive changes in the cathode and should be avoided.

Different strategies of introduction of lithium ions into nickel‑manganese‑cobalt carbonate resulting in LiNi0.6Mn0.2Co0.2O2 (NMC622) cathode material for Li-ion batteries

2020 ◽  
Vol 348 ◽  
pp. 115273 ◽  
Author(s):  
Magdalena Zybert ◽  
Hubert Ronduda ◽  
Anna Szczęsna ◽  
Tomasz Trzeciak ◽  
Andrzej Ostrowski ◽  
...  
Keyword(s):  
Cathode Material ◽  
Li Ion Batteries ◽  
Lithium Ions ◽  
Cobalt Carbonate ◽  
Li Ion ◽  
Nickel Manganese

Surface modification of Li-rich layered Li1.2Mn0.54Ni0.13Co0.13O2 oxide with Fe2O3 as cathode material for Li-ion batteries

2021 ◽  
Vol 366-367 ◽  
pp. 115661
Author(s):  
Xinhua Zhai ◽  
Panpan Zhang ◽  
Hui Huang ◽  
Jianfeng Zhou ◽  
Xiaobo Li ◽  
...  
Keyword(s):  
Surface Modification ◽  
Cathode Material ◽  
Li Ion Batteries ◽  
Li Ion
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