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Nanoporous Structured LiFePO4 with Spherical Microscale Particles Having High Volumetric Capacity for Lithium Batteries
- Oh, Sung Woo;
- Myung, Seung-Taek;
- Bang, Hyun Joo;
- Yoon, Chong Seung;
- Amine, Khalil;
- ... Sun, Yang-Kook
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To overcome a major limitation of volumetric energy density, we prepared micrometer-sized LiFePO4 particles with a unique spongelike morphology and a high packing density. Each LiFePO4 secondary particle (6 mu m) consisted of nanoscale (200-300 nm) primary LiFePO4 particles coated with carbon and had nanoscale (100-200 nm) pores throughout. Compared with the nano-LiFePO4 positive electrode material, this carbon-impregnated, spongelike, nanoporous material resulted in a similarly high rate capability plus a 2.5 times greater volumetric energy density.
키워드
carbon; coatings; electrochemical electrodes; iron compounds; lithium compounds; nanoporous materials; secondary cells; ELECTROCHEMICAL PROPERTIES; PHOSPHO-OLIVINES; PERFORMANCE; CATHODES; IRON
- 제목
- Nanoporous Structured LiFePO4 with Spherical Microscale Particles Having High Volumetric Capacity for Lithium Batteries
- 저자
- Oh, Sung Woo; Myung, Seung-Taek; Bang, Hyun Joo; Yoon, Chong Seung; Amine, Khalil; Sun, Yang-Kook
- 발행일
- 2009-06
- 유형
- Article
- 권
- 12
- 호
- 9
- 페이지
- A181 ~ A185