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Investigation of the Na storage property of one-dimensional Cu2- xSe nanorods

Investigation of the Na storage property of one-dimensional Cu2- xSe nanorods
Investigation of the Na storage property of one-dimensional Cu2- xSe nanorods
In this study, one-dimensional Cu 2−x Se nanorods synthesized by a simple water evaporation-induced self-assembly approach are served as the anode material for Na-ion batteries for the first time. Cu 2−x Se electrodes express outstanding electrochemical properties. The initial discharge capacity is 149.3 mA h g −1 at a current density of 100 mA g −1 , and the discharge capacity can remain at 106.2 mA h g −1 after 400 cycles. Even at a high current density of 2000 mA g −1 , the discharge capacity of the Cu 2−x Se electrode still remains at 62.8 mA h g −1 , showing excellent rate performance. Owing to the excellent electronic conductivity and one-dimensional structure of Cu 2−x Se, the Cu 2−x Se electrodes manifest fast Na + ion diffusion rate. Moreover, detailed Na + insertion/extraction mechanism is further investigated by ex situ measurements and theoretical calculations.
Na storage property, Na-ion battery, copper selenide, electrochemical kinetics, intercalation mechanism
1944-8244
13491-13498
Li, He
1d46f87c-8509-43b9-9ee5-eb1065c4de0f
Jiang, Jiali
42b3e6ca-096f-42f7-8b90-d165420076a5
Huang, Jianxing
7bddb9d6-a21b-4443-8ec1-a4c2095fbed3
Wang, Yunhui
b996c61d-a63c-4da2-b1bd-39fac531bb0a
Peng, Yueying
e41317da-f79f-4869-82ce-7c08f2a51368
Zhang, Yiyong
7415da5e-795e-4f95-b621-5c80660aac6b
Hwang, Bing Joe
e8627d9b-f368-46ee-9f8b-d93370e8baae
Zhao, Jinbao
40b1eebf-6f3e-4767-a559-39ab8aca25c0
Li, He
1d46f87c-8509-43b9-9ee5-eb1065c4de0f
Jiang, Jiali
42b3e6ca-096f-42f7-8b90-d165420076a5
Huang, Jianxing
7bddb9d6-a21b-4443-8ec1-a4c2095fbed3
Wang, Yunhui
b996c61d-a63c-4da2-b1bd-39fac531bb0a
Peng, Yueying
e41317da-f79f-4869-82ce-7c08f2a51368
Zhang, Yiyong
7415da5e-795e-4f95-b621-5c80660aac6b
Hwang, Bing Joe
e8627d9b-f368-46ee-9f8b-d93370e8baae
Zhao, Jinbao
40b1eebf-6f3e-4767-a559-39ab8aca25c0

Li, He, Jiang, Jiali, Huang, Jianxing, Wang, Yunhui, Peng, Yueying, Zhang, Yiyong, Hwang, Bing Joe and Zhao, Jinbao (2018) Investigation of the Na storage property of one-dimensional Cu2- xSe nanorods. ACS Applied Materials & Interfaces, 10 (16), 13491-13498. (doi:10.1021/acsami.8b00783).

Record type: Article

Abstract

In this study, one-dimensional Cu 2−x Se nanorods synthesized by a simple water evaporation-induced self-assembly approach are served as the anode material for Na-ion batteries for the first time. Cu 2−x Se electrodes express outstanding electrochemical properties. The initial discharge capacity is 149.3 mA h g −1 at a current density of 100 mA g −1 , and the discharge capacity can remain at 106.2 mA h g −1 after 400 cycles. Even at a high current density of 2000 mA g −1 , the discharge capacity of the Cu 2−x Se electrode still remains at 62.8 mA h g −1 , showing excellent rate performance. Owing to the excellent electronic conductivity and one-dimensional structure of Cu 2−x Se, the Cu 2−x Se electrodes manifest fast Na + ion diffusion rate. Moreover, detailed Na + insertion/extraction mechanism is further investigated by ex situ measurements and theoretical calculations.

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More information

Accepted/In Press date: 4 April 2018
e-pub ahead of print date: 4 April 2018
Published date: 25 April 2018
Keywords: Na storage property, Na-ion battery, copper selenide, electrochemical kinetics, intercalation mechanism

Identifiers

Local EPrints ID: 424322
URI: http://eprints.soton.ac.uk/id/eprint/424322
ISSN: 1944-8244
PURE UUID: 0e98ed7c-386d-4c77-8703-d6d8a49a7766

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Date deposited: 05 Oct 2018 11:36
Last modified: 26 Apr 2022 21:45

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Contributors

Author: He Li ORCID iD
Author: Jiali Jiang
Author: Jianxing Huang
Author: Yunhui Wang
Author: Yueying Peng
Author: Yiyong Zhang
Author: Bing Joe Hwang
Author: Jinbao Zhao

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