Oxygen vacancies Nb2O5-x: Ultrastable lithium storage anode materials for advanced rechargeable batteries

Wei Fang; Yan Zhang; Cong Kang; Qi Meng; Anran Shi; Shuaifeng Lou; Xinqun Cheng; Geping Yin; Lingling Zhang

doi:10.1016/j.apsusc.2022.154068

Oxygen vacancies Nb₂O_5-_x: Ultrastable lithium storage anode materials for advanced rechargeable batteries

Wei Fang
, Yan Zhang
, Cong Kang
, Qi Meng
, Anran Shi
, Shuaifeng Lou
, Xinqun Cheng^*
, Geping Yin
, Lingling Zhang

^*Corresponding author for this work

Baicheng Normal University
School of Chemistry and Chemical Engineering, Harbin Institute of Technology
Northeast Agricultural University

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

Optimizing the charge and ion transport of Nb₂O₅ composite is great significance for developing high-performance fast charge lithium-ion batteries. We designed Nb₂O₅ with oxygen vacancies through a simple and cost-effective hydrothermal and high-temperature calcination treatments. Oxygen vacancies can not only improve the electronic conductivity of the composite, but also effectively provide more active sites and reduce the ion transport barrier, which improved electrochemical reaction kinetics of the Nb₂O₅ composite. Consequently, the synthesized Nb₂O_5-_x microflowers delivered a specific capacity of 191.2 mA h g⁻¹ at 1C (a retention of 94% over 200 cycles) and outstanding rate capability (103.3 mA h g⁻¹ at 50C) for lithium storage. Significantly, this work may also broaden the pathways for designing other electrode materials with oxygen vacancies for battery systems.

Original language	English
Article number	154068
Journal	Applied Surface Science
Volume	600
DOIs	https://doi.org/10.1016/j.apsusc.2022.154068
State	Published - 30 Oct 2022
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

High-rate capability
Li intercalation pseudocapacitance
Lithium-ion batteries
Oxygen vacancies NbO anode

Access to Document

10.1016/j.apsusc.2022.154068

Cite this

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title = "Oxygen vacancies Nb2O5-x: Ultrastable lithium storage anode materials for advanced rechargeable batteries",

abstract = "Optimizing the charge and ion transport of Nb2O5 composite is great significance for developing high-performance fast charge lithium-ion batteries. We designed Nb2O5 with oxygen vacancies through a simple and cost-effective hydrothermal and high-temperature calcination treatments. Oxygen vacancies can not only improve the electronic conductivity of the composite, but also effectively provide more active sites and reduce the ion transport barrier, which improved electrochemical reaction kinetics of the Nb2O5 composite. Consequently, the synthesized Nb2O5-x microflowers delivered a specific capacity of 191.2 mA h g−1 at 1C (a retention of 94\% over 200 cycles) and outstanding rate capability (103.3 mA h g−1 at 50C) for lithium storage. Significantly, this work may also broaden the pathways for designing other electrode materials with oxygen vacancies for battery systems.",

keywords = "High-rate capability, Li intercalation pseudocapacitance, Lithium-ion batteries, Oxygen vacancies NbO anode",

author = "Wei Fang and Yan Zhang and Cong Kang and Qi Meng and Anran Shi and Shuaifeng Lou and Xinqun Cheng and Geping Yin and Lingling Zhang",

note = "Publisher Copyright: {\textcopyright} 2022",

year = "2022",

month = oct,

day = "30",

doi = "10.1016/j.apsusc.2022.154068",

language = "英语",

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TY - JOUR

T1 - Oxygen vacancies Nb2O5-x

T2 - Ultrastable lithium storage anode materials for advanced rechargeable batteries

AU - Fang, Wei

AU - Zhang, Yan

AU - Kang, Cong

AU - Meng, Qi

AU - Shi, Anran

AU - Lou, Shuaifeng

AU - Cheng, Xinqun

AU - Yin, Geping

AU - Zhang, Lingling

PY - 2022/10/30

Y1 - 2022/10/30

N2 - Optimizing the charge and ion transport of Nb2O5 composite is great significance for developing high-performance fast charge lithium-ion batteries. We designed Nb2O5 with oxygen vacancies through a simple and cost-effective hydrothermal and high-temperature calcination treatments. Oxygen vacancies can not only improve the electronic conductivity of the composite, but also effectively provide more active sites and reduce the ion transport barrier, which improved electrochemical reaction kinetics of the Nb2O5 composite. Consequently, the synthesized Nb2O5-x microflowers delivered a specific capacity of 191.2 mA h g−1 at 1C (a retention of 94% over 200 cycles) and outstanding rate capability (103.3 mA h g−1 at 50C) for lithium storage. Significantly, this work may also broaden the pathways for designing other electrode materials with oxygen vacancies for battery systems.

AB - Optimizing the charge and ion transport of Nb2O5 composite is great significance for developing high-performance fast charge lithium-ion batteries. We designed Nb2O5 with oxygen vacancies through a simple and cost-effective hydrothermal and high-temperature calcination treatments. Oxygen vacancies can not only improve the electronic conductivity of the composite, but also effectively provide more active sites and reduce the ion transport barrier, which improved electrochemical reaction kinetics of the Nb2O5 composite. Consequently, the synthesized Nb2O5-x microflowers delivered a specific capacity of 191.2 mA h g−1 at 1C (a retention of 94% over 200 cycles) and outstanding rate capability (103.3 mA h g−1 at 50C) for lithium storage. Significantly, this work may also broaden the pathways for designing other electrode materials with oxygen vacancies for battery systems.

KW - High-rate capability

KW - Li intercalation pseudocapacitance

KW - Lithium-ion batteries

KW - Oxygen vacancies NbO anode

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DO - 10.1016/j.apsusc.2022.154068

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JO - Applied Surface Science

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