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Divalent cations synergistic doped V-based cathode towards high-performance aqueous zinc-ion batteries.

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Title: Divalent cations synergistic doped V-based cathode towards high-performance aqueous zinc-ion batteries.
Authors: Wu, Qiuyi1 (AUTHOR), Hu, Cuixian1 (AUTHOR), Le, Jinrong1 (AUTHOR), Chen, Yuhong1 (AUTHOR), Yang, Xiao2 (AUTHOR), Liu, Liangwei2 (AUTHOR), Xiao, Yi2 (AUTHOR), Wan, Houzhao1,3 (AUTHOR) houzhaow@hubu.edu.cn, Yang, Zhou1,4 (AUTHOR) zyang@snnu.edu.cn, Ding, Xiang1 (AUTHOR) dingx@fjnu.edu.cn, Han, Lili1,2 (AUTHOR) llhan@fjirsm.ac.cn
Source: Chemical Engineering Journal. Mar2026, Vol. 532, pN.PAG-N.PAG. 1p.
Subjects: Cathodes, Doping agents (Chemistry), Energy storage, Vanadium oxide, Ab-initio calculations
Abstract: Vanadium oxides (V 2 O 5 ·xH 2 O) cathodes hold ultra-high theoretical capacity (~589 mA h g−1) and ultra-wide interlayer spacing (0.577 nm) in aqueous zinc-ion batteries (AZIBs). However, they still suffer from defects of inferior bulk conductivity and woeful structure decay during repeated cycle. Herein, serial divalent cations (Ca2+/Mg2+/Sr2+/Ba2+) synergistic doped V 2 O 5 ·xH 2 O are systematically designed. It integrates the heterogenous electronegativity and ionic radius of Ca2+ (0.1 nm), Mg2+ (0.072 nm), Sr2+(0.118 nm) and Ba2+(0.135 nm) to improve the steric and electronic effects of layered V O slabs, thereby expanding the interlayer spacing, enhancing bulk conductivity, and stabilizing layered structure. A series of in−/ex-situ analytical methods and DFT calculations profoundly clarify the gain effects and structure-activity relationship ascribed to synergistic doping. As a result, the optimized sample demonstrates high-capacity of 428.9 mA h g−1 at 0.6 A g−1, superior rate capabilities (250 mA h g 12 A g−1), cycling stability (2000 cycles at 6 A g−1@92% retention), and energy density (338 W h kg−1), revealing significant scientific value for developing high-performance AZIBs. [Display omitted] • Ca2+/Mg2+/Sr2+/Ba2+/H 2 O multi-doped vanadium-based cathode material is designed with significant pillar effect. • DFT and in situ/ex situ characterization clarified Zn2+ (de)intercalation mechanism and structure–activity relationship. • The optimized CMSB-VOH cathode demonstrated remarkable electrochemical performance in both coin cells and pouch cells. [ABSTRACT FROM AUTHOR]
Copyright of Chemical Engineering Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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DbLabel: Engineering Source
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  Label: Title
  Group: Ti
  Data: Divalent cations synergistic doped V-based cathode towards high-performance aqueous zinc-ion batteries.
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  Data: <searchLink fieldCode="AR" term="%22Wu%2C+Qiuyi%22">Wu, Qiuyi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hu%2C+Cuixian%22">Hu, Cuixian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Le%2C+Jinrong%22">Le, Jinrong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Yuhong%22">Chen, Yuhong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Xiao%22">Yang, Xiao</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Liangwei%22">Liu, Liangwei</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xiao%2C+Yi%22">Xiao, Yi</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wan%2C+Houzhao%22">Wan, Houzhao</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> houzhaow@hubu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Yang%2C+Zhou%22">Yang, Zhou</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<i> zyang@snnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Ding%2C+Xiang%22">Ding, Xiang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> dingx@fjnu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Han%2C+Lili%22">Han, Lili</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> llhan@fjirsm.ac.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Chemical+Engineering+Journal%22">Chemical Engineering Journal</searchLink>. Mar2026, Vol. 532, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Cathodes%22">Cathodes</searchLink><br /><searchLink fieldCode="DE" term="%22Doping+agents+%28Chemistry%29%22">Doping agents (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+storage%22">Energy storage</searchLink><br /><searchLink fieldCode="DE" term="%22Vanadium+oxide%22">Vanadium oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Ab-initio+calculations%22">Ab-initio calculations</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Vanadium oxides (V 2 O 5 ·xH 2 O) cathodes hold ultra-high theoretical capacity (~589 mA h g−1) and ultra-wide interlayer spacing (0.577 nm) in aqueous zinc-ion batteries (AZIBs). However, they still suffer from defects of inferior bulk conductivity and woeful structure decay during repeated cycle. Herein, serial divalent cations (Ca2+/Mg2+/Sr2+/Ba2+) synergistic doped V 2 O 5 ·xH 2 O are systematically designed. It integrates the heterogenous electronegativity and ionic radius of Ca2+ (0.1 nm), Mg2+ (0.072 nm), Sr2+(0.118 nm) and Ba2+(0.135 nm) to improve the steric and electronic effects of layered V O slabs, thereby expanding the interlayer spacing, enhancing bulk conductivity, and stabilizing layered structure. A series of in−/ex-situ analytical methods and DFT calculations profoundly clarify the gain effects and structure-activity relationship ascribed to synergistic doping. As a result, the optimized sample demonstrates high-capacity of 428.9 mA h g−1 at 0.6 A g−1, superior rate capabilities (250 mA h g 12 A g−1), cycling stability (2000 cycles at 6 A g−1@92% retention), and energy density (338 W h kg−1), revealing significant scientific value for developing high-performance AZIBs. [Display omitted] • Ca2+/Mg2+/Sr2+/Ba2+/H 2 O multi-doped vanadium-based cathode material is designed with significant pillar effect. • DFT and in situ/ex situ characterization clarified Zn2+ (de)intercalation mechanism and structure–activity relationship. • The optimized CMSB-VOH cathode demonstrated remarkable electrochemical performance in both coin cells and pouch cells. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Chemical Engineering Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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    Identifiers:
      – Type: doi
        Value: 10.1016/j.cej.2026.174524
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Cathodes
        Type: general
      – SubjectFull: Doping agents (Chemistry)
        Type: general
      – SubjectFull: Energy storage
        Type: general
      – SubjectFull: Vanadium oxide
        Type: general
      – SubjectFull: Ab-initio calculations
        Type: general
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      – TitleFull: Divalent cations synergistic doped V-based cathode towards high-performance aqueous zinc-ion batteries.
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            NameFull: Wu, Qiuyi
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              Text: Mar2026
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