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MnO nanocrystals incorporated in a N-containing carbon matrix for Li ion battery anodes
| Title: | MnO nanocrystals incorporated in a N-containing carbon matrix for Li ion battery anodes |
| Authors: | Zhu, Chunyu Browse this author →KAKEN DB | | Han, Cheng-gong Browse this author | | Saito, Genki Browse this author →KAKEN DB | | Akiyama, Tomohiro Browse this author →KAKEN DB |
| Keywords: | manganese oxide | | lithium ion battery | | anode material | | composite | | carbon |
| Issue Date: | 16-Mar-2016 |
| Publisher: | Royal Society of Chemistry |
| Journal Title: | RSC advances |
| Volume: | 6 |
| Issue: | 36 |
| Start Page: | 30445 |
| End Page: | 30453 |
| Publisher DOI: | 10.1039/c6ra00571c |
| Abstract: | In this study, MnO nanocrystals incorporated in a N-containing carbon matrix were fabricated by the facile thermal decomposition of manganese nitrate-glycine gels. MnO/C composites with different carbon contents were prepared by controlling the initial ratio of manganese to glycine. The composition, phase structure and morphology of the composites were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, scanning and transmission electron microscopy, and thermogravimetric analysis. The results indicated that MnO nanocrystals were uniformly embedded in the N-doped carbon matrix. The carbon matrix could effectively enhance the electrical conductivity of MnO and alleviate the strain arising from the discharge/charge cycling. The composite materials exhibited high discharge/charge capacities, superior cycling performance, and excellent rate capability. A high reversible capacity of 556 mA h g(-1) was obtained after 110 cycles of discharging and charging at a current rate of 0.5 A g(-1). Even at a high current rate of 3 A g(-1), the sample still delivered a capacity of around 286 mA h g(-1). The easy production and superior electrochemical properties enables the composites to be a promising candidate as an anode alternative for high-performance lithium-ion batteries. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/64713 |
| Appears in Collections: | エネルギー・マテリアル融合領域研究センター (Center for Advanced Research of Energy and Material) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 朱 春宇
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