| 학회 |
한국화학공학회 |
| 학술대회 |
2014년 가을 (10/22 ~ 10/24, 대전 DCC) |
| 권호 |
20권 2호, p.1512 |
| 발표분야 |
생물화공 |
| 제목 |
Brown algae-mimetic alginate binder with improved desolvation and resilience for use in Si-based anode binder of a lithium ion battery |
| 초록 |
Si-based anodes in lithium ion batteries (LIBs) have attracted public attention due to their exceptionally high theoretical capacity, but the use of Si-based anode with LIB faces the challenge of mechanical instability of Si particles during the charging/discharging process. Alginate and its derivatives have demonstrated promising performances as Si particles binders in the anode owing to improved modulus compared to commercial binders. Here, we show that calcium-mediated electrostatic cross-linking of alginate called “Egg-box” improves toughness, resilience, electrolyte desolvation of the alginate binder as Si-binder for LIB. Consequently, the improved mechanical properties of calcium alginate compared to the sodium alginate binder and other commercial binders are directly translated into enhancing lifetime and capacity of Si-based-anode LIB. |
| 저자 |
오동엽1, 윤지희2, 조창신2, 이진우2, 황동수3
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| 소속 |
1POSTECH, 2POSTECH 화학공학과, 3POSTECH 환경공학부 / POSTECH 융합생명공학부 |
| 키워드 |
Biomimetics; Alginate; Silicon anode binder; Lithium battery; Resilience
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| E-Mail |
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| 원문파일 |
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