Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 36, Pages 23899-23908Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b06032
Keywords
tungsten disulfide; nitrogen-doped conductive carbon; electronic conductivity; electrochemical performance; sodium ion batteries
Funding
- 973 Special Preliminary Study Plan [2014CB260411]
- Scientific Research Innovation Team Foundation of Shaanxi Province [2013KCT-06]
- Innovation Team Assistance Foundation of Shaanxi University of Science and Technology [TD12-05]
- Doctoral Initial Foundation [BJ14-16]
- Scientific Special Fund of Shaanxi Province Office of Education [15jk1074]
- Graduate Innovation Foundation of Shaanxi University of Science and Technology
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Tungsten disulfide (WS2) material is regarded as One of the most promising anode candidates for sodium ion batteries,(SIBs). However, the exploration of this material still remains a great Challenge to improve its cycling capacity. In this paper, nitrogen-doped conductive carbon/WS2 nanocomposites (WS2-NC) were fabricated based on the synthesis of the pure WS2, and conductive carbon/WS2 (WS2-C) nanocomposites. The reversible capacity of the as-prepared WS2-NC is stabilized at similar to 360 mA h g(-1). at the density of 100 mA g(-1), even similar to 200 mA h g(-1) at 1 A g(-1), presenting much better cycling performance than pure WS2 and conductive carbon/WS2 (WS2-C) samples. This excellent performance is further attributed to obviously promoted interfacial reaction in WS2 nanosheets at a low voltage platform (03-0.0 V), which is considered to closely relate to the incorporation of nitrogen-doped conductive carbon into WS2 nanosheets. Generally; this work presents an,obviously enhanced Na storage performance by the incorporation of N-doped carbon into WS2 nanosheets to promote their interfacial reaction at low voltage platform. It could provide guidelines to create other-high-capacity anode sulfide materials for SIBs.,
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