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Nanoporous Structured LiFePO4 with Spherical Microscale Particles Having High Volumetric Capacity for Lithium Batteries
- Authors
- Oh, Sung Woo; Myung, Seung-Taek; Bang, Hyun Joo; Yoon, Chong Seung; Amine, Khalil; Sun, Yang-Kook
- Issue Date
- Jun-2009
- Publisher
- Electrochemical Society, Inc.
- Keywords
- carbon; coatings; electrochemical electrodes; iron compounds; lithium compounds; nanoporous materials; secondary cells
- Citation
- Electrochemical and Solid-State Letters, v.12, no.9, pp A181 - A185
- Indexed
- SCIE
SCOPUS
- Journal Title
- Electrochemical and Solid-State Letters
- Volume
- 12
- Number
- 9
- Start Page
- A181
- End Page
- A185
- ISSN
- 1099-0062
- Abstract
- 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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Related Researcher
- Sun, Yang Kook
- COLLEGE OF ENGINEERING (DEPARTMENT OF ENERGY ENGINEERING)