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Type: Journal article
Title: 1T′-ReS₂ confined in 2D-honeycombed carbon nanosheets as new anode materials for high-performance sodium-ion batteries
Author: Chen, B.
Li, H.
Liu, H.
Wang, X.
Xie, F.
Deng, Y.
Hu, W.
Davey, K.
Zhao, N.
Qiao, S.Z.
Citation: Advanced Energy Materials, 2019; 9(30):1901146-1-1901146-8
Publisher: Wiley
Issue Date: 2019
ISSN: 1614-6832
Statement of
Biao Chen, Huan Li, Huaxiong Liu, Xinqian Wang, Fangxi Xie, Yida Deng, Wenbin Hu, Kenneth Davey, Naiqin Zhao, Shi‐Zhang Qiao
Abstract: eS₂ (rhenium disulfide) is a new transition‐metal dichalcogenide that exhibits 1T′ phase and extremely weak interlayer van der Waals interactions. This makes it promising as an anode material for sodium‐ion batteries. However, achieving both a high‐rate capability and a long‐life has remained a major research challenge. Here, a new composite is reported, in which both are realized for the first time. 1T′‐ReS₂ is confined through strong interfacial interaction in a 2D‐honeycombed carbon nanosheets that comprise an rGO inter‐layer and a N‐doped carbon coating‐layer (rGO@ReS2@N‐C). The strong interfacial interaction between carbon and ReS2 increases overall conductivity and decreases Na+ diffusion resistance, whilst the intended 2D‐honeycombed carbon protective layer maintains structural morphology and electrochemical activity during long‐term cycling. These findings are confirmed by advanced characterization techniques, electrochemical measurement, and density functional theory calculation. The new rGO@ReS2@N‐C exhibits the greatest rate performance reported so far for ReS₂ of 231 mAh g−1 at 10 A g−1. Significantly, this is together with ultra‐stable long‐term cycling of 192 mAh g−1 at 2 A g−1 after 4000 cycles.
Keywords: 2D‐nanosheets; honeycombed carbon; interfacial interaction; ReS; 2D‐nanosheets; honeycombed carbon; interfacial interaction; ReS2; sodium‐ion batteries; sodium‐ion batteries
Rights: © 2019 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
DOI: 10.1002/aenm.201901146
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Chemical Engineering publications

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