期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 8, 期 46, 页码 17062-17068出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.0c04716
关键词
lithium-ion battery; thick Li4Ti5O12 electrode; high mass loading; NaCl template; gradient porous electrode
资金
- National Natural Science Foundation of China [21905194]
- Natural Science Foundation of Jiangsu Province [SBK2018042005]
- Natural Science Foundation of the Jiangsu Higher Education Institution of China [18KJB150029]
- Promotion Program for Young and Middle-Aged Teacher in Science and Technology Research of Huaqiao University [ZQN-PY608]
The manufacturing process for electrodes in lithium-ion batteries generally results in a nonuniform microstructure geometrically distributed in the through-thickness direction of an electrode. A porous structure was designed to decrease tortuosity and increase Li+ penetration in a thick Li4Ti5O12 (LTO) electrode. By using NaCl as a template, the porous LTO electrode with a high mass loading of 12 mg cm(-2) was fabricated. Electrochemical performance for the LTO electrode with different porosities was comparatively studied. To achieve higher volume energy density, a gradient porous LTO electrode was prepared. As a result, the thick LTO electrode with a high mass loading of 20 mg cm(-2) can deliver a high capacity of 150 mAh g(-1) at 1 C with almost no ohmic drop under charge/discharge for 40 cycles.
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