Journal
NANOMATERIALS
Volume 9, Issue 11, Pages -Publisher
MDPI
DOI: 10.3390/nano9111638
Keywords
V3S4 nanosheets; pseudocapacitive; N, S co-doped graphene; lithium ion batteries
Categories
Funding
- National Natural Science Foundation of China [51804156]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [20HASTIT020]
- Colleges and Universities in Henan Province Key Science and Research Project [18A430002]
- Henan Province Science and Technology Tackle Key Problems Project [182102310908]
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Construction of a suitable hybrid structure has been considered an important approach to address the defects of metal sulfide anode materials. V3S4 nanosheets anchored on an N, S co-coped graphene (VS/NSG) aerogel were successfully fabricated by an efficient self-assembled strategy. During the heat treatment process, decomposition, sulfuration and N, S co-doping occurred. This hybrid structure was not only endowed with an enhanced capability to buffer the volume expansion, but also improved electron conductivity as a result of the conductive network that had been constructed. The dominating pseudocapacitive contribution (57.78% at 1 mV s(-1)) enhanced the electrochemical performance effectively. When serving as anode material for lithium ion batteries, VS/NSG exhibits excellent lithium storage properties, including high rate capacity (480 and 330 mAh g(-1) at 5 and 10 A g(-1), respectively) and stable cyclic performance (692 mAh g(-1) after 400 cycles at 2 A g(-1)).
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