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Graphite has been widely used as an anode material for commercial lithium-ion battery applications because of its excellent stability and low cost. However, graphite-based anodes need to improve the energy storage capacities to meet the increasing power demands of next-generation technologies. Here, we have developed a class of novel and flexible electrode materials that consist of N-doped graphene quantum dots supported by carbon nanotubes grown on carbon cloth (denoted as CC/CNT@N-GQD). Such architecture synergistically combines the advantages of three dimensions/one dimension substrates and zero dimension N-GQDs. It greatly improves the electron/ion transport kinetics of N-GQDs, resulting in attractive electrochemical performance in terms of high reversible capacity and excellent rate capability. Moreover, the annealing temperature plays an important role in the control of N-doping types of CC/CNT@N-GQD. CC/CNT@N-GQD anodes annealed at 500 degrees C have a high content of pyridinic N, exhibiting a very excellent rate capability and cycling stability, as exemplified by a capacity of 2.88 mAh cm(-2) at 4 mA cm(-2) and a reversible capacity of 3.63 mAh cm(-2) after 150 cycles at 0.19 mA cm(-2). (C) 2020 The Electrochemical Society ("ECS"). Published on behalf of ECS by IOP Publishing Limited.
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JOURNAL OF THE ELECTROCHEMICAL SOCIETY
ISSN: 0013-4651
Year: 2020
Issue: 6
Volume: 167
4 . 3 1 6
JCR@2020
3 . 1 0 0
JCR@2023
JCR Journal Grade:1
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 6
SCOPUS Cited Count: 6
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 3
Affiliated Colleges: