| 학회 | 한국화학공학회 |
| 학술대회 | 2017년 가을 (10/25 ~ 10/27, 대전컨벤션센터) |
| 권호 | 23권 2호, p.2531 |
| 발표분야 | WISET 여대학(원)생 공학연구팀제 지원사업 결과 발표대회(여성위원회) |
| 제목 | Facile and cost-effective synthesis of carbon coated halloystie-derived silicon nanotube anode for lithium ion battery |
| 초록 | Silicon is a promising material in lithium-ion battery anodes. However, its alloying chemistry of lithiation results unavoidable volumetric change during cycling and eventually causes deterioration of the electrode. To reduce the fracture of silicon, nanosized design sheds light on the drawback of the failure. Considering the practical considerations, the cost of silicon nanoparticles with hollow geometry is another formidable challenge because synthetic methods of silicon nanoparticles is complicated and expansive. To utilize the advantage of silicon, the recovery of earth-abundant substances has attracted great attention for practical applications due to the low raw material cost by recycling resources. Here we synthesize hollow silicon nanotubes with a facile and low cost process from an halloysite clay in a natural state. Void spaces of halloysite can accommodate the volume change of Li-Si alloying reaction. A carbon coating has treated on a halloysite surface as a mechanical clamping layer and an electrical conductive pathway, benefitting to the inward volume expansion. |
| 저자 | 염수정, 이현욱 |
| 소속 | 울산과학기술원 |
| 키워드 | 리튬이온배터리; 실리콘 |
| 원문파일 | 초록 보기 |
