Enhancing Electrochemical Performance of High Voltage (4.5 V) Graphite/LiNi0.5Co0.2Mn0.3O2Cell by Tailoring Cathode Interface

2016 ◽  
Vol 164 (2) ◽  
pp. A137-A144 ◽  
Author(s):  
Pengbo Hong ◽  
Mengqing Xu ◽  
Dongrui Chen ◽  
Xiaoqiao Chen ◽  
Lidan Xing ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
High Voltage ◽  
Cathode Interface

Mechanism of electrochemical performance decay in LiCoO2 aged at high voltage

2004 ◽  
Vol 50 (2-3) ◽  
pp. 385-390 ◽  
Author(s):  
R. Yazami ◽  
Y. Ozawa ◽  
H. Gabrisch ◽  
B. Fultz
Keyword(s):  
Electrochemical Performance ◽  
High Voltage

Fluorinated Hyperbranched Cyclotriphosphazene Simultaneously Enhances the Safety and Electrochemical Performance of High-Voltage Lithium-Ion Batteries

2016 ◽  
Vol 3 (6) ◽  
pp. 913-921 ◽  
Author(s):  
Choon-Ki Kim ◽  
Dong-Seon Shin ◽  
Ko-Eun Kim ◽  
Kyomin Shin ◽  
Jung-Je Woo ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Voltage ◽  
Lithium Ion

Improved electrochemical performance of LiCoO2 electrodes for high-voltage operations by Ag thin film coating via magnetron sputtering

MRS Advances ◽  
2018 ◽  
Vol 3 (60) ◽  
pp. 3513-3518 ◽  
Author(s):  
Taner Zerrin ◽  
Mihri Ozkan ◽  
Cengiz S. Ozkan
Keyword(s):  
Thin Film ◽  
Magnetron Sputtering ◽  
Electrochemical Performance ◽  
High Voltage ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
Interface Layer ◽  
Li Ion Batteries ◽  
Electrode Structure ◽  
Li Ion

ABSTRACTIncreasing the operation voltage of LiCoO2 (LCO) is a direct way to enhance the energy density of the Li-ion batteries. However, at high voltages, the cycling stability degrades very fast due to the irreversible changes in the electrode structure, and formation of an unstable solid electrolyte interface layer. In this work, Ag thin film was prepared on commercial LCO cathode by using magnetron sputtering technique. Ag coated electrode enabled an improved electrochemical performance with a better cycling capability. After 100 cycles, Ag coated LCO delivers a discharge capacity of 106.3 mAh g-1 within 3 - 4.5 V at C/5, which is increased by 45 % compared to that of the uncoated LCO. Coating the electrode surface with Ag thin film also delivered an improved Coulombic efficiency, which is believed to be an indication of suppressed parasitic reactions at the electrode interface. This work may lead to new methods on surface modifications of LCO and other cathode materials to achieve high-capacity Li-ion batteries for high-voltage operations.

Robust and sulfur-containing ingredient surface film to improve the electrochemical performance of LiDFOB-based high-voltage electrolyte

2018 ◽  
Vol 260 ◽  
pp. 536-548 ◽  
Author(s):  
Dongni Zhao ◽  
Peng Wang ◽  
Xiaoling Cui ◽  
Liping Mao ◽  
Chunlei Li ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
High Voltage ◽  
Surface Film ◽  
Sulfur Containing

Morphology-controllable synthesis of LiCoPO4 and its influence on electrochemical performance for high-voltage lithium ion batteries

2020 ◽  
Vol 450 ◽  
pp. 227726 ◽  
Author(s):  
Xiaochao Wu ◽  
Maria Meledina ◽  
Hermann Tempel ◽  
Hans Kungl ◽  
Joachim Mayer ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Lithium Ion Batteries ◽  
High Voltage ◽  
Lithium Ion ◽  
Controllable Synthesis
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