Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7887846 | Ceramics International | 2018 | 6 Pages |
Abstract
The fabrication process and material design of flexible lithium-ion batteries (LIBs) are essential in flexible portable devices. In particular, the carbon nanofiber (CNF)-based active anodes with flexibility synthesized using an electrospinning technique showed fairly stable cycling performance in the LIBs. In this study, we synthesized the molybdenum carbide (MoC) embedded in CNFs as an anode for LIBs (MoC/CNF) using an electrospinning technique with amorphous Mo precursor and polyacrylonitrile as the molybdenum and carbon sources, respectively, and using a heating process under an N2 atmosphere. The as-prepared flexible MoC/CNF showed a 3D porous structure consisting of crystalline MoC and amorphous CNF. MoC/CNF, directly utilized as an active electrode without binder, conductor, or current collector, exhibited superior LIB performance, i.e. high capacity, cyclability, and high-rate properties. In particular, at a considerably high charge/discharge rate of 10â¯Aâ¯gâ1, the specific capacity of MoC/CNF (109â¯mAhâ¯gâ1) was significantly higher than that of pure CNF electrode (3â¯mAhâ¯gâ1).
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Gyo-Ho Lee, Sang-Hyun Moon, Min-Cheol Kim, Si-Jin Kim, Sojeong Choi, Eun-Soo Kim, Sang-Beom Han, Kyung-Won Park,