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Self-templating thermolysis synthesis of Cu2–xS@M (M = C, TiO2, MoS2) hollow spheres and their application in rechargeable lithium batteries

Self-templating thermolysis synthesis of Cu2–xS@M (M = C, TiO2, MoS2) hollow spheres and their application in rechargeable lithium batteries
Self-templating thermolysis synthesis of Cu2–xS@M (M = C, TiO2, MoS2) hollow spheres and their application in rechargeable lithium batteries
Owing to their unique structural stability and impressive long-term cycling performance, coated hollow structures are highly attractive for energy storage systems, especially batteries. Many efforts have been devoted and various strategies have been proposed to prepare such materials. In the present work, we propose a self-templating thermolysis strategy, different from traditional wet processing methods, to fabricate cuprous sulfide hollow spheres coated with different shells, by exploiting the thermal decomposition properties of the core (CuS) and the protection provided by the shell. To demonstrate the generality of this synthetic approach, three different coating materials (carbon, TiO2, MoS2) have been chosen to prepare Cu2–xS@C, Cu2–xS@TiO2 and Cu2–xS@MoS2 hollow spheres. All synthesized composite materials were then assembled as electrodes and tested in lithium batteries, showing excellent cycling stability. In particular, the electrochemical properties of Cu2–xS@C were thoroughly investigated. The results of this work provide an alternative route to prepare coated metal sulfide hollow spheres for energy storage applications.
Hollow spheres, Lithium batteries, Self-templating thermolysis, Sulfide
1998-0000
831-844
Wang, Yunhui
b996c61d-a63c-4da2-b1bd-39fac531bb0a
Li, He
1d46f87c-8509-43b9-9ee5-eb1065c4de0f
Zhang, Yiyong
7415da5e-795e-4f95-b621-5c80660aac6b
Peng, Yueying
e41317da-f79f-4869-82ce-7c08f2a51368
Zhang, Peng
8f9fe822-ed75-4a7d-a4d5-9725b7ea0c4a
Zhao, Jinbao
40b1eebf-6f3e-4767-a559-39ab8aca25c0
Wang, Yunhui
b996c61d-a63c-4da2-b1bd-39fac531bb0a
Li, He
1d46f87c-8509-43b9-9ee5-eb1065c4de0f
Zhang, Yiyong
7415da5e-795e-4f95-b621-5c80660aac6b
Peng, Yueying
e41317da-f79f-4869-82ce-7c08f2a51368
Zhang, Peng
8f9fe822-ed75-4a7d-a4d5-9725b7ea0c4a
Zhao, Jinbao
40b1eebf-6f3e-4767-a559-39ab8aca25c0

Wang, Yunhui, Li, He, Zhang, Yiyong, Peng, Yueying, Zhang, Peng and Zhao, Jinbao (2018) Self-templating thermolysis synthesis of Cu2–xS@M (M = C, TiO2, MoS2) hollow spheres and their application in rechargeable lithium batteries. Nano Research, 11 (2), 831-844. (doi:10.1007/s12274-017-1693-1).

Record type: Article

Abstract

Owing to their unique structural stability and impressive long-term cycling performance, coated hollow structures are highly attractive for energy storage systems, especially batteries. Many efforts have been devoted and various strategies have been proposed to prepare such materials. In the present work, we propose a self-templating thermolysis strategy, different from traditional wet processing methods, to fabricate cuprous sulfide hollow spheres coated with different shells, by exploiting the thermal decomposition properties of the core (CuS) and the protection provided by the shell. To demonstrate the generality of this synthetic approach, three different coating materials (carbon, TiO2, MoS2) have been chosen to prepare Cu2–xS@C, Cu2–xS@TiO2 and Cu2–xS@MoS2 hollow spheres. All synthesized composite materials were then assembled as electrodes and tested in lithium batteries, showing excellent cycling stability. In particular, the electrochemical properties of Cu2–xS@C were thoroughly investigated. The results of this work provide an alternative route to prepare coated metal sulfide hollow spheres for energy storage applications.

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More information

Accepted/In Press date: 30 May 2017
e-pub ahead of print date: 19 July 2017
Published date: 1 February 2018
Keywords: Hollow spheres, Lithium batteries, Self-templating thermolysis, Sulfide

Identifiers

Local EPrints ID: 424323
URI: http://eprints.soton.ac.uk/id/eprint/424323
ISSN: 1998-0000
PURE UUID: abff5418-e46a-43a1-8bee-859199457589

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Date deposited: 05 Oct 2018 11:36
Last modified: 09 Jan 2022 10:06

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Contributors

Author: Yunhui Wang
Author: He Li ORCID iD
Author: Yiyong Zhang
Author: Yueying Peng
Author: Peng Zhang
Author: Jinbao Zhao

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