Tulip-like MoS2 with a single sheet tapered structure anchored on N-doped graphene substrates via C–O–Mo bonds for superior sodium storage. Issue 47 (20th November 2018)

• Record Type: Journal Article
• Authors: Wang, Tian; Shen, Xuetao; Huang, Jianfeng; Xi, Qiao; Zhao, Yixing; Guo, Qiang; Wang, Xing; Xu, Zhanwei
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 47(2018)
• Page Start: 24433
• Page End: 24440
• Publication Date: 2018-11-20
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8ta09221d
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Tulip-like MoS2 with a single sheet tapered structure anchored on N-doped graphene substrates via C–O–Mo bonds shows excellent capacity retention for sodium storage. Abstract : Tulip-like MoS2 with a tapered structure was assembled using a single-sheet anchored on N-doped graphene substrates (tulip-MoS2 /NG) through an in situ technique with N -methyl-2-pyrrolidinone (NMP) as the "sacrificial agent" to promote C–O–Mo bond formation. As an anode for the Na + battery, tulip-MoS2 /NG electrodes exhibited excellent capacity retention (above 99% after 100 cycles at 0.1 A g −1 ) and long cycling stability (179 mA h g −1 at 1 A g −1 and 151 mA h g −1 at 5 A g −1 after 1000 cycles with a degradation below 110 μAh g −1 cycle −1 ). The excellent electrochemical performance could be attributed to the single-sheet tapered structure that functions as a self-support and promotes the stability of the tulip-MoS2 /NG architecture. Moreover, the C–O–Mo bonds derived from the NMP molecular bridge fixed tulip-like MoS2 on the NG.