Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 8, Issue 2, Pages 1043-1049Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b05800
Keywords
lithium ion batteries; kerf loss silicon; submicron silicon; conjugated copolymers; direct arylation
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Funding
- Ministry of Science and Technology, Taiwan
- National Tsing Hua University [107Q2708E1]
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We developed high-performance, lithium ion batteries (LIBs) based on submicron-sized recycled silicon and conjugated polymer binders. The polymer binders were synthesized by palladium-catalyzed direct arylation of 3-(2-ethylh exhyl) thiophene or 3,3'-di(2- ethylhexyl)bithiophene and dimethyl-2,5-dibromoterephthalate, followed by saponification. The LIBs were fabricated using composites of submicron-sized silicon and the polymer binders without conductive carbon additives. They exhibit a high capacity of up to 2700 mA h g(-1) at a high rate of 1.0C, and 52% of this capacity is maintained even after 1000 cycles.
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