Manipulating Oxygen Vacancies to Spur Ion Kinetics in V2O5 Structures for Superior Aqueous Zinc-Ion Batteries

Jia Jia Ye, Pei Hua Li, Hao Ran Zhang, Zong Yin Song, Tianju Fan, Wanqun Zhang, Jie Tian, Tao Huang, Yitai Qian, Zhiguo Hou, Netanel Shpigel, Li Feng Chen, Shi Xue Dou

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

Vanadium-based intercalation materials have attracted considerable attention for aqueous zinc-ion batteries (ZIBs). However, the sluggish interlaminar diffusion of zinc ions due to the strong electrostatic interaction, severely restricts their practical application. Herein, oxygen vacancy-enriched V2O5 structures (Zn0.125V2O5·0.95H2O nanoflowers, Ov-ZVO) with expanded interlamellar space and excellent structural stability are prepared for superior ZIBs. In situ electron paramagnetic resonance (EPR) and X-ray diffraction (XRD) characterization revealed that numerous oxygen vacancies are generated at a relatively low reaction temperature because of partially escaped lattice water. In situ spectroscopy and density functional theory (DFT) calculations unraveled that the existence of oxygen vacancies lowered Zn2+ diffusion barriers in Ov-ZVO and weakened the interaction between Zn and O atoms, thus contributing to excellent electrochemical performance. The Zn||Ov-ZVO battery displayed a remarkable capacity of 402 mAh g−1 at 0.1 A g−1 and impressive energy output of 193 Wh kg−1 at 2673 W kg−1. As a proof of concept, the Zn||Ov-ZVO pouch cell can reach a high capacity of 350 mAh g−1 at 0.5 A g−1, demonstrating its enormous potential for practical application. This study provides fundamental insights into formation of oxygen-vacant nanostructures and generated oxygen vacancies improving electrochemical performance, directing new pathways toward defect-functionalized advanced materials.

Original languageEnglish
Article number2305659
JournalAdvanced Functional Materials
Volume33
Issue number46
DOIs
StatePublished - 9 Nov 2023

Bibliographical note

Publisher Copyright:
© 2023 Wiley-VCH GmbH.

Funding

J.-J.Y. and P.-H.L. contributed equally to this work. This work was financially supported by the National Natural Science Foundation of China (22075269, 52102261), National Natural Science Fund for Excellent Young Scientists Fund (Overseas) Program (GG2090007003), National Natural Science Foundation of China/China Academy of Engineering Physics “NSAF” Joint Fund (U2230101), Anhui Provincial Major Science and Technology Project (202203a05020048), National Key R&D Program of China (2020YFA0710100), Anhui Provincial Hundred Talents Program, Hefei Innovative Program for Overseas Excellent Scholars (BJ2090007002), Fundamental Research Funds for the Central Universities (WK2480000007), USTC Startup Program (KY2090000062, KY2090000098, KY2090000099), the Natural Science Foundation of Jiangsu Province (BK20210942), the Natural Science Foundation of Anhui Province (2208085QB34), Jiangsu Province Science and Technology Young Talents Promotion Project (KYZ21053) and Changzhou Science and Technology Young Talents Promotion Project (KYZ21039) and Joint Research Center for Multi-Energy Complementation and Conversion. The authors thank the Steady High Magnetic Field Facility (SHMFF) and Shanghai Synchrotron Radiation Facility (BL11B, SSRF). J.‐J.Y. and P.‐H.L. contributed equally to this work. This work was financially supported by the National Natural Science Foundation of China (22075269, 52102261), National Natural Science Fund for Excellent Young Scientists Fund (Overseas) Program (GG2090007003), National Natural Science Foundation of China/China Academy of Engineering Physics “NSAF” Joint Fund (U2230101), Anhui Provincial Major Science and Technology Project (202203a05020048), National Key R&D Program of China (2020YFA0710100), Anhui Provincial Hundred Talents Program, Hefei Innovative Program for Overseas Excellent Scholars (BJ2090007002), Fundamental Research Funds for the Central Universities (WK2480000007), USTC Startup Program (KY2090000062, KY2090000098, KY2090000099), the Natural Science Foundation of Jiangsu Province (BK20210942), the Natural Science Foundation of Anhui Province (2208085QB34), Jiangsu Province Science and Technology Young Talents Promotion Project (KYZ21053) and Changzhou Science and Technology Young Talents Promotion Project (KYZ21039) and Joint Research Center for Multi‐Energy Complementation and Conversion. The authors thank the Steady High Magnetic Field Facility (SHMFF) and Shanghai Synchrotron Radiation Facility (BL11B, SSRF).

FundersFunder number
Anhui Provincial Hundred Talents Program
Changzhou Science and Technology Young Talents Promotion ProjectKYZ21039
Hefei Innovative Program for Overseas Excellent ScholarsBJ2090007002
Jiangsu Province Science and Technology Young Talents Promotion ProjectKYZ21053
National Natural Science Fund for Excellent Young Scientists FundGG2090007003
Shanghai Synchrotron Radiation FacilityBL11B
Salt Science Research Foundation
National Natural Science Foundation of China52102261, 22075269
China Academy of Engineering PhysicsU2230101
Natural Science Foundation of Anhui Province2208085QB34
Natural Science Foundation of Jiangsu ProvinceBK20210942
University of Science and Technology of ChinaKY2090000062, KY2090000098, KY2090000099
National Key Research and Development Program of China2020YFA0710100
Fundamental Research Funds for the Central UniversitiesWK2480000007
Major Science and Technology Projects in Anhui Province202203a05020048

    Keywords

    • aqueous rechargeable zinc-ion batteries
    • flexible large-scale energy storage systems
    • oxygen vacancy-enriched VO structures
    • vanadium-based cathode materials

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