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Significance of N-moieties in regulating the electrochemical properties of nano-porous graphene: Toward highly capacitive energy storage devices

Title
Significance of N-moieties in regulating the electrochemical properties of nano-porous graphene: Toward highly capacitive energy storage devices
Authors
Khan, FirozKim, Jae Hyeon
DGIST Authors
Kim, Jae Hyeon
Issue Date
2018-12
Citation
Journal of Industrial and Engineering Chemistry, 68, 129-139
Type
Article
Article Type
Article
Author Keywords
Electrochemical propertiesNitrogen dopingNitrogen moietiesPorous graphene
ISSN
1226-086X
Abstract
The effects of N doping concentration and dopant moieties on the electrochemical properties of nanoporous graphene and their dependence on annealing temperature are investigated. Four types of N moieties – amide, amine, graphitic-N, and oxidized-N – are obtained, which transformed into pyridinic-N and pyrrolic-N upon annealing. The diffusion coefficient (D′) of the ions in the electrode is the maximum at 400 °C because of a high level of N doping, whereas the second highest D′ value is obtained at 700 °C owing to a high level of reduction and N doping. The highest specific capacitance is obtained for the sample annealed at 400 °C. © 2018 The Korean Society of Industrial and Engineering Chemistry
URI
http://hdl.handle.net/20.500.11750/9261
DOI
10.1016/j.jiec.2018.07.037
Publisher
한국공업화학회
Related Researcher
Files:
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Collection:
Smart Textile Convergence Research Group1. Journal Articles


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