期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 223, 期 -, 页码 152-156出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2018.10.042
关键词
Si; Porous current collector; Stress relief; Li-ion batteries
资金
- National Research Foundation - Ministry of Science, ICT [NRF-2017M1A2A2086648]
- National Research Foundation of Korea [31Z20150113465, 2017M1A2A2086648] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
To overcome the mechanical stress generated during the cycling process in lithium-ion batteries, Si anode is fabricated on a porous Cu current collector with holes using sputtering deposition method. The porous Cu/Si shows superior high-rate and cycling performance in lithium-ion batteries compared to the Si anode on the flat Cu. The excellent high-rate performance and stable cyclability of the porous Cu/Si can be predominantly attributed to the efficient relief of the stress generated by the volumetric expansion of the Si anode on the porous Cu current collector.
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