期刊
APPLIED SCIENCES-BASEL
卷 9, 期 17, 页码 -出版社
MDPI
DOI: 10.3390/app9173588
关键词
3D battery; laser ablation; diffusion coefficient; lithium-ion batteries; LiCoO2
类别
资金
- German Research Foundation (DFG) [392322200]
Quantitative experiments of lithiation/delithiation rates were considered for a better understanding of electrochemical intercalation/deintercalation processes in laser structured thick film cathodes. Besides galvanostatic cycling for evaluation of specific discharge capacities, a suitable quantitative approach for determining the rate of Li-ion insertion in the active material and the rate of Li-ion transport in the electrolyte is expressed by chemical diffusion coefficient values. For this purpose, the galvanostatic intermittent titration technique has been involved. It could be shown that laser structured electrodes provide an enhanced chemical diffusion coefficient and an improved capacity retention at high charging and discharging rates.
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