Journal
ELECTROCHIMICA ACTA
Volume 272, Issue -, Pages 119-126Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2018.03.201
Keywords
Lithium-ion battery; WS2 nanosheets; Nitrogen doped carbon nanofiber; Heteroatom incorporation
Categories
Funding
- National Natural Science Foundation of China [21603041]
- Priority Academic Program Development of Jiangsu Higher Education Institution
- Topnotch Academic Programs Project of Jiangsu Higher Education Institutions [PPZY2015B112]
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To efficiently improve the attractive properties of electrode material for lithium ion batteries (LIBs), the uniform hybridization of 2 Dimensional WS2 nanosheets of nitrogen doped carbon nanofiber (WN-CNF) as a novel anode electrode is synthesized via a facile electrospinning strategy. The well-aligned structure, roughness of surface morphology and chemical composition are characterized by microscopic and spectroscopic analysis. Nitrogen-containing groups and 1 T phase of WS2 in WN-CNF are demonstrated as the electro-active sites to enhance the capacitive performance. Meanwhile, WN-CNF exhibits a highly reversible specific capacity of 814 mAh g(-1) at the current density of 100 mA g(-1), excellent rate capability of 52% from 100 to 1000 mA g(-1) and cyclic stability of 87% after 120 charge/discharge cycles. The high performance can be attributed to the synergistic effects of rough surface, heteroatom N incorporation and hybridization with pseudocapacitive 2D WS2. (C) 2018 Elsevier Ltd. All rights reserved.
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