2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 10: Battery, Recycling, Environmental, Mining
| Editors: | Kongoli F, Kumar V, Aifantis K, Pagnanelli F |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 220 pages |
| ISBN: | 978-1-987820-54-6 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Graphene Based Electrode Materials for Energy Storage Applications
Hyun-Kyung Kim1;1UNIVERSITY OF CAMBRIDGE, Cambridge, United Kingdom (Great Britain);
Type of Paper: Regular
Id Paper: 393
Topic: 14
Abstract:
Electrochemical energy storage devices can offer a number of great potentials for meeting future energy demands, such as of renewable energy, electric vehicles, portable electronics, that require high energy density, high power density and long cycle life. Among the various electrode materials available for energy storage devices, graphene, a one-atom thick two-dimensional (2D) sp2 carbon structure, has attracted considerable interest as a next-generation carbon material owing to its large surface area, high electrical conductivity and good mechanical/chemical stability. Currently, one obvious research is to utilize 2D graphene as either an electro-active material itself or a conductive carbon template for nano-hybrid electrode materials for energy storage devices such as supercapacitors and Li-ion batteries.
The key points in the research and application of graphene-based electrodes are as follow; At first, high-quality graphene should be synthesized to possess large specific surface area with high electrical conductivity similar to the pristine graphene. Then, the surface area of graphene should be maintained even after the electrode fabrication process, in order to achieve the large electrochemically active surface area. In addition, the conductive networks, as well as pore channels between graphene nanosheets, should be effectively developed in the electrode for fast ions/electrons transfer. Therefore the graphene-based materials should be designed to possess suitable nano-/macro-structure in the electrode for achieving these aims. In the case of the nano-hybrid materials, besides the above-described key points, the active materials should be effectively anchored or wrapped/entrapped between the graphene nanosheets to provide highly conducting network/buffering matrix to the active materials.
From this point of view, in this presentation, we report on the strategies to effectively exploit graphene-based electrode materials for energy storage devices. More details will be discussed at the meeting.