Niobium Carbide as a Promising Pseudocapacitive Sodium-Ion Storage Anode

Shige Wang; Lianyi Shao; Lu Yu; Jieduo Guan; Xiaoyan Shi; Zhipeng Sun; Junjie Cai; Haitao Huang; Alex Trukhanov

doi:10.1002/ente.202100298

Niobium Carbide as a Promising Pseudocapacitive Sodium-Ion Storage Anode

Shige Wang, Lianyi Shao, Lu Yu, Jieduo Guan, Xiaoyan Shi, Zhipeng Sun, Junjie Cai, Haitao Huang, Alex Trukhanov

Research output: Journal article publication › Journal article › Academic research › peer-review

29 Citations (Scopus)

Abstract

Niobium carbide (NbC) is used as anode material for sodium-ion batteries for the first time. Ball-milled NbC delivers an initial charge capacity of 242 mAh g⁻¹ at 0.1 A g⁻¹ and a capacity of 126 mAh g⁻¹ after 1000 cycles at a high current density of 5 A g⁻¹ without carbon coating. Cyclic voltammetry curves demonstrate that the pseudocapacitive Na⁺ storage behavior dominates the electrochemical reaction, which is responsible for the good rate capability. Ex situ X-ray diffraction (XRD), transmission electron microscopy (TEM), and density functional theory (DFT) calculations show that the electrochemical reaction between NbC and Na is attributed to an adsorption mechanism.

Original language	English
Article number	2100298
Journal	Energy Technology
Volume	9
Issue number	9
DOIs	https://doi.org/10.1002/ente.202100298
Publication status	Published - Sept 2021

Keywords

anodes
NbC
pseudocapacitives
sodium-ion batteries

ASJC Scopus subject areas

General Energy

More information

10.1002/ente.202100298

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title = "Niobium Carbide as a Promising Pseudocapacitive Sodium-Ion Storage Anode",

abstract = "Niobium carbide (NbC) is used as anode material for sodium-ion batteries for the first time. Ball-milled NbC delivers an initial charge capacity of 242 mAh g−1 at 0.1 A g−1 and a capacity of 126 mAh g−1 after 1000 cycles at a high current density of 5 A g−1 without carbon coating. Cyclic voltammetry curves demonstrate that the pseudocapacitive Na+ storage behavior dominates the electrochemical reaction, which is responsible for the good rate capability. Ex situ X-ray diffraction (XRD), transmission electron microscopy (TEM), and density functional theory (DFT) calculations show that the electrochemical reaction between NbC and Na is attributed to an adsorption mechanism.",

keywords = "anodes, NbC, pseudocapacitives, sodium-ion batteries",

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doi = "10.1002/ente.202100298",

language = "English",

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AU - Wang, Shige

AU - Shao, Lianyi

AU - Yu, Lu

AU - Guan, Jieduo

AU - Shi, Xiaoyan

AU - Sun, Zhipeng

AU - Cai, Junjie

AU - Huang, Haitao

AU - Trukhanov, Alex

N1 - Funding Information: This work was supported by National Natural Science Foundation of China (nos. 21905058 and 21663029), Guangdong University of Technology Youth Hundred Talents Program (no. 220413671), and Department of Science and Technology of Guangdong Province (no. 2020A1414010280). Publisher Copyright: © 2021 Wiley-VCH GmbH

PY - 2021/9

Y1 - 2021/9

N2 - Niobium carbide (NbC) is used as anode material for sodium-ion batteries for the first time. Ball-milled NbC delivers an initial charge capacity of 242 mAh g−1 at 0.1 A g−1 and a capacity of 126 mAh g−1 after 1000 cycles at a high current density of 5 A g−1 without carbon coating. Cyclic voltammetry curves demonstrate that the pseudocapacitive Na+ storage behavior dominates the electrochemical reaction, which is responsible for the good rate capability. Ex situ X-ray diffraction (XRD), transmission electron microscopy (TEM), and density functional theory (DFT) calculations show that the electrochemical reaction between NbC and Na is attributed to an adsorption mechanism.

AB - Niobium carbide (NbC) is used as anode material for sodium-ion batteries for the first time. Ball-milled NbC delivers an initial charge capacity of 242 mAh g−1 at 0.1 A g−1 and a capacity of 126 mAh g−1 after 1000 cycles at a high current density of 5 A g−1 without carbon coating. Cyclic voltammetry curves demonstrate that the pseudocapacitive Na+ storage behavior dominates the electrochemical reaction, which is responsible for the good rate capability. Ex situ X-ray diffraction (XRD), transmission electron microscopy (TEM), and density functional theory (DFT) calculations show that the electrochemical reaction between NbC and Na is attributed to an adsorption mechanism.

KW - anodes

KW - NbC

KW - pseudocapacitives

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JF - Energy Technology

IS - 9

M1 - 2100298

ER -

Niobium Carbide as a Promising Pseudocapacitive Sodium-Ion Storage Anode

Abstract

Keywords

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