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Abstract:
Coordination compound derivates (CCDs) have been widely applied in lithium-ion batteries (LIBs). However, the functionalization of CCDs with open structure and heteroatomic doping is still challenging. Herein, an effective functionalization strategy is presented to prepare a kind of CCD, where Co0.85Se nanoparticles are encapsulated by nitrogen-enriched hierarchically porous carbon (CS/NPC) based on the heat treatment of a cobalt-complexed hexamethylolmelamine-polyvinylpyrrolidone resin (Co2+/HPR). The abundant free volume and enriched N species of the HPR are responsible for the hierarchically porous configuration and high N-doping of the composites. By controlling the content of cobalt salt and the heating rate, high specific surface area (440.7 m2 g-1), high N-doping (8.54 atom %), and suitable mass loading of Co0.85Se (55.5%) were simultaneously achieved in CS-2/NPC-5, which delivers high reversible capacity (758.5 mAh g-1 at 0.1 A g-1), outstanding rate capability (401.7 mAh g-1 at 5 A g-1), and excellent cycling durability (638.4 mAh g-1 at 1 A g-1 after 200 cycles), suggesting a promising candidate for LIB anode materials. Copyright © 2020 American Chemical Society.
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ACS Applied Materials and Interfaces
ISSN: 1944-8244
Year: 2020
Issue: 8
Volume: 12
Page: 9236-9247
9 . 2 2 9
JCR@2020
8 . 5 0 0
JCR@2023
ESI HC Threshold:196
JCR Journal Grade:1
CAS Journal Grade:2
Cited Count:
SCOPUS Cited Count: 32
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
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30 Days PV: 0
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