3D flexible Si based-composite (Si@Si3N4)/CNF electrode with enhanced cyclability and high rate capability for lithium-ion batteries
- Authors
- Kim, Si-Jin; Kim, Min-Cheol; Han, Sang-Beom; Lee, Gyu-Ho; Choe, Hui-Seon; Kwak, Da-Hee; Choi, Sun-Yong; Son, Byung-Goo; Shin, Myoung-Sun; Park, Kyung-Won
- Issue Date
- Sep-2016
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Si; Si3N4; Composite; Carbon nanofiber; Li-ion batteries
- Citation
- NANO ENERGY, v.27, pp.545 - 553
- Journal Title
- NANO ENERGY
- Volume
- 27
- Start Page
- 545
- End Page
- 553
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/7526
- DOI
- 10.1016/j.nanoen.2016.08.012
- ISSN
- 2211-2855
- Abstract
- Despite extremely high capacity of Si-based anodes in lithium-ion batteries (LIB), Si-based materials have shown a structural collapse caused by a volumetric expansion/contraction during the cycling process. The conventional electrode structure, which consists of active materials, a current collector, a conducting agent, and a binder, actually showed a low loading of active material due to the other heavy components. In this study, we prepared a 3D flexible Si-composite electrode consisting of core (Si)-shell (Si3N4) NPs (Si@Si3N4) and carbon nanofibers (denoted as Si-composite/CNF). The Si-composite/CNF was directly utilized as an anode in the absence of the other components was electrochemically evaluated using a coin-type cell. The Si-composite/CNF showed a high capacity of 665 m Ah g(-1) at a fairly high current density of 10 A g(-1) and an extremely low capacity loss for 2000 cycles. (C) 2016 Published by Elsevier Ltd.
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Collections - College of Engineering > Department of Chemical Engineering > 1. Journal Articles
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