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Superior lithium/potassium storage capability of nitrogen-rich porous carbon nanosheets derived from petroleum coke

Title
Superior lithium/potassium storage capability of nitrogen-rich porous carbon nanosheets derived from petroleum coke
Author
황장연
Keywords
LITHIUM-ION BATTERIES; ELECTROCHEMICAL ENERGY-STORAGE; PERFORMANCE ANODE MATERIALS; HIGH-CAPACITY; GRAPHITIC CARBON; HIGH-POWER; GRAPHENE; MICRO; ELECTRODES; COMPOSITE
Issue Date
2018-06
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY A, v. 6, no. 26, page. 12551-12558
Abstract
Tremendous attention has been paid to carbon-based anodes for lithium-ion and potassium-ion batteries. Nevertheless, conferring high energy storage properties using carbon-based anodes is still challenging. In this work, petroleum coke-based nitrogen-doped porous carbon nanosheets (N-PCSs) were prepared using carbon nitride (g-C3N4) as both a template and nitrogen source and tested as advanced anode materials. The as-obtained N-PCSs constructed through an in situ solid-state approach possess both high capacity and excellent cycling stability. High capacities were obtained for Li-ion and K-ion batteries (407mA h g(-1) after 500 cycles at 3720 mA g(-1) and 206 mA h g(-1) after 300 cycles at 1000 mA g(-1), respectively); these are some of the best capacities for carbon-based electrode materials and could be ascribed to the unique microstructure of the anodes, i.e., nanosheet morphology, developed porosity, ultrahigh nitrogen doping, and a high level of disorder. Meanwhile, this study represents a milestone for high-value utilization of petroleum coke and other kinds of heavy oil.
URI
https://pubs.rsc.org/en/content/articlelanding/2018/TA/C8TA03340D#!divAbstracthttp://repository.hanyang.ac.kr/handle/20.500.11754/119249
ISSN
2050-7488; 2050-7496
DOI
10.1039/c8ta03340d
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CENTER FOR CREATIVE CONVERGENCE EDUCATION[S](창의융합교육원) > ETC
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