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DOI	10.1038/s41467-021-22662-7
	Interplay between electrochemical reactions and mechanical responses in silicon–graphite anodes and its impact on degradation
	Moon J.; Lee H.C.; Jung H.; Wakita S.; Cho S.; Yoon J.; Lee J.; Ueda A.; Choi B.; Lee S.; Ito K.; Kubo Y.; Lim A.C.; Seo J.G.; Yoo J.; Lee S.; Ham Y.; Baek W.; Ryu Y.-G.; Han I.T.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Durability of high-energy throughput batteries is a prerequisite for electric vehicles to penetrate the market. Despite remarkable progresses in silicon anodes with high energy densities, rapid capacity fading of full cells with silicon–graphite anodes limits their use. In this work, we unveil degradation mechanisms such as Li+ crosstalk between silicon and graphite, consequent Li+ accumulation in silicon, and capacity depression of graphite due to silicon expansion. The active material properties, i.e. silicon particle size and graphite hardness, are then modified based on these results to reduce Li+ accumulation in silicon and the subsequent degradation of the active materials in the anode. Finally, the cycling performance is tailored by designing electrodes to regulate Li+ crosstalk. The resultant full cell with an areal capacity of 6 mAh cm−2 has a cycle life of >750 cycles the volumetric energy density of 800 Wh L−1 in a commercial cell format. © 2021, The Author(s).
语种	英语
scopus关键词	graphite; lithium ion; silicon; chemical reaction; degradation; electrochemical method; electrode; fuel cell; silicon; Article; degradation; electrochemical analysis; hardness; particle size; volumetry
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251450
作者单位	Samsung Advanced Institute of Technology, Suwon-si, Gyeonggi-do, South Korea; C4GR-GREEN, National Institute for Materials Science, Tsukuba, Ibaraki, Japan; Department of Chemical Engineering, Hanyang University, Seongdong-gu, Seoul, South Korea; National NanoFab Center, Daejeon, South Korea; Department of Energy and Mineral Resources Engineering, Dong-A University, Bumin Campus, 225, Seo-gu, Busan, South Korea; Samsung SDI, Suwon-si, Gyeonggi-do, South Korea; Asahi Kasei Corporation, Fuji-shi, Shizuoka, Japan
推荐引用方式 GB/T 7714	Moon J.,Lee H.C.,Jung H.,等. Interplay between electrochemical reactions and mechanical responses in silicon–graphite anodes and its impact on degradation[J],2021,12(1).
APA	Moon J..,Lee H.C..,Jung H..,Wakita S..,Cho S..,...&Han I.T..(2021).Interplay between electrochemical reactions and mechanical responses in silicon–graphite anodes and its impact on degradation.Nature Communications,12(1).
MLA	Moon J.,et al."Interplay between electrochemical reactions and mechanical responses in silicon–graphite anodes and its impact on degradation".Nature Communications 12.1(2021).