콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Microalgae-Templated Spray Drying for Hierarchical and Porous Fe3O4/C Composite Microspheres as Li-ion Battery Anode Materials
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2020-10
- 저자명 유명현,Jinseok Park,김정민,Dae Soo Jung,PHIRI ISHEUNESU,배현수,홍진석,김소진,Young-Gi Lee,Kyubock Lee
- 학술지명 NANOMATERIALS
- 발행처명 MDPI
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 10
- 논문 다운로드 링크(외부) https://doi.org/10.3390/nano10102074
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
A method of microalgae-templated spray drying to develop hierarchical porous Fe3O4/C composite microspheres as anode materials for Li-ion batteries was developed. During the spray-drying process, individual microalgae serve as building blocks of raspberry-like hollow microspheres via self-assembly. In the present study, microalgae-derived carbon matrices, naturally doped heteroatoms, and hierarchical porous structural features synergistically contributed to the high electrochemical performance of the Fe3O4/C composite microspheres, enabling a discharge capacity of 1375 mA.h.g(-1) after 700 cycles at a current density of 1 A/g. Notably, the microalgal frameworks of the Fe3O4/C composite microspheres were maintained over the course of charge/discharge cycling, thus demonstrating the structural stability of the composite microspheres against pulverization. In contrast, the sample fabricated without microalgal templating showed significant capacity drops (up to similar to 40% of initial capacity) during the early cycles. Clearly, templating of microalgae endows anode materials with superior cycling stability.
