Journal
ELECTROCHEMICAL AND SOLID STATE LETTERS
Volume 12, Issue 9, Pages A181-A185Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.3143901
Keywords
carbon; coatings; electrochemical electrodes; iron compounds; lithium compounds; nanoporous materials; secondary cells
Funding
- Korean Institute of Energy and Resources Technology Evaluation and Planning
- Korea Science and Engineering Foundation (KOSEF)
- Korean government (MEST) [R11-2008-088-03002-0]
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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.
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