Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10625177 | Ceramics International | 2014 | 6 Pages |
Abstract
A tartaric acid-assisted sol-gel process was used to synthesize Li2MnSiO4 (SG-LMS) nanopowders with orthorhombic structures (Pmn21 space group). The Li-active SG-LMS nanoparticles were fully surrounded by a conducting amorphous carbon layer/matrix that was formed by carbonization of the tartaric acid during post-annealing of the dry gel. The SG-LMS electrode exhibited higher specific capacity and superior cycle retention as compared to the LMS electrode prepared by a conventional solid-state reaction. Such high electrochemical performance originated from the presence of a high-purity phase, a large surface area, and an efficient electron transport path facilitated by the conductive carbon coating of the SG-LMS electrode.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Kyung-Soo Park, Yun-Ho Jin, Lee-Seung Kang, Gwang-Hee Lee, Nam-Hee Lee, Dong-Wan Kim, Hyun Seon Hong,