期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 2, 期 41, 页码 17400-17407出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta03566f
关键词
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资金
- Japan Society for Promotion of Science (JSPS) [P13070]
- Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST)
- Core Technology Consortium for Advanced Energy Devices, Tohoku University, Japan
- Grants-in-Aid for Scientific Research [13F03070] Funding Source: KAKEN
Olivine-type LiMPO4 (M - Fe, Mn, Co and Ni) cathode materials hold promise for next-generation of lithium-ion batteries and future applications as hybrid electric vehicles or electric vehicles. In lithium intercalation olivine compounds, the lithium diffusion along a channel is highly anisotropic which is mainly confined to the channel along the [010] direction. Thus, nanosheets or nanoplates with shortened Li ion diffusion distance along the [010] direction are enabled to accelerate the lithium intercalation rate and improve power density of the batteries. Herein, we report the production of high-quality thin LiMPO4 nanoplates with exposed {010} facets by a rapid supercritical fluid processing. The unique structure of the olivine nanocrystals with a shortened Li ion diffusion pathway allows fast extraction/insertion of Li ions in the structures. Thus, the LiMPO4 nanoplates provide high capacity and high rate capacity and excellent cyclability.
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