| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
기능성 고분자 |
| 제목 |
Fabrication of stable silicon anode by an effective connection between polymer electrolyte and polymer binder |
| 초록 |
Silicon is next to the lithium metal in terms of high-capacity anode and its operating potential range is low enough for practical battery operation conditions. However, the intrinsic volume change of silicon during charging and discharging leads to Si particle pulverization resulting in the loss of electrical contacts, which limit its commercial application. To alleviate volume change, polymer electrolyte and polymer binder in Si anode were connected by a thermal crosslinking. The reaction of diamino-poly(propylene oxide) (DPPO) and poly(ethylene glycol) diglycidyl ether (PEGDE) for the formation of the polymer electrolyte and the interaction between the amine of DPPO and the COOH of poly(acrylic acid) (PAA) binder were simultaneously performed by a heat treatment. The effective connection provided the cohesion between the silicon particles, and then Si particles pulverization was reduced. The unique connection show higher capacity and capacity retention upon cycling. |
| 저자 |
이정훈, 조미숙, Chalathorn Chanthad, 이영관
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| 소속 |
성균관대 |
| 키워드 |
고분자; 바인더; 고분자전해질; 이차전지
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| E-Mail |
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