논문 해외 국제전문학술지(SCI급) Layered oxide cathode-inspired secondary hard carbon microsphere anode material for high-power and long-life rechargeable batteries
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2023-02
- 저자명 Hyun Ju Oh, Hyo Kyoung Kang, Hyunchul Ahn, Jehee Park, Jun Choi, Hak Yong Kim, Eungje Lee, Sang Young Yeo, Yeong Og Choi, Byeong Jin Yeang, Seoung-Bum Son, Byoung-Sun Lee
- 학술지명 Chemical Engineering Journal
- 발행처명 Elsevier
- 발행국가 해외
- 논문언어 외국어
- 원문 링크 https://www.sciencedirect.com/science/article/pii/S1385894722057321
홈페이지논문 초록 (Abstract)
A new anode material that will provide lithium ion (Li-ion) batteries with high energy and power density is urgently needed. In this work, a layered oxide cathode-inspired secondary hard carbon microsphere (CMS) anode material was designed, and exhibited excellent rate performance and long cyclability. Polyacrylonitrile/poly(styrene-co-acrylonitrile) (PAN/SAN) compositions displaying the meatball-like shape of the PAN precursor were carbonized into CMSs having turbostratic microstructures. The CMS carbonized at 1,000 °C (CMS1000) displayed high specific capacity at the highest current density of 1,000 mA g−1, i.e., 77.6 % of its average charge capacity at 100 mA g−1, and considerable cycling retention after 500 cycles, i.e., 83.8 % of the specific capacity at cycle 25. Our work demonstrates that the design of new anode materials is a fruitful route to improve commercial Li-ion batteries.