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Unveiling the Myste...
Unveiling the Mysteries: Acetonitrile's Dance with Weakly-Solvating Electrolytes in Shaping Gas Evolution and Electrochemical Performance of Zinc-ion Batteries
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- Wu, Zhenrui (author)
- University of British Columbia (UBC)
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- Li, Yihu, 1996 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Amardeep, Amardeep (author)
- University of British Columbia (UBC)
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- Shao, Yijia (author)
- University of British Columbia (UBC)
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- Zhang, Yue (author)
- University of British Columbia (UBC)
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- Zou, Jian (author)
- University of Electronic Science and Technology of China
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- Wang, Liping (author)
- University of Electronic Science and Technology of China
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- Xu, Jia (author)
- University of British Columbia (UBC)
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- Kasprzak, Dawid (author)
- Politechnika Poznanska,Poznan University of Technology,University of British Columbia (UBC)
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- Hansen, Evan J. (author)
- University of British Columbia (UBC)
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- Liu, Jian (author)
- University of British Columbia (UBC)
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Angewandte Chemie. - 1521-3773 .- 1433-7851. ; 63:19
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Abstract
Subject headings
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- Aqueous Zn-metal battery (AZMB) is a promising candidate for future large-scale energy storage with commendable capacity, exceptional safety characteristics, and low cost. Acetonitrile (AN) has been widely used as an effective electrolyte constituent to improve AZMBs’ performance. However, its functioning mechanisms remain unclear. In this study, we unveiled the critical roles of AN in AZMBs via comparative in situ electrochemical, gaseous, and morphological analyses. Despite its limited ability to solvate Zn ions, AN-modulated Zn-ion solvation sheath with increased anions and decreased water achieves a weakly-solvating electrolyte. As a result, the Zn||Zn cell with AN addition exhibited 63 times longer cycle life than cell without AN and achieved a 4 Ah cm−2 accumulated capacity with no H2 generation. In V2O5||Zn cells, for the first time, AN suppressing CO2 generation, elevating CO2-initiation voltage from 2→2.44 V (H2: 2.43→2.55 V) was discovered. AN-impeded transit and Zn-side deposition of dissolved vanadium ions, known as “crosstalk,” ameliorated inhomogeneous Zn deposition and dendritic Zn growth. At last, we demonstrated an AN-enabled high-areal-capacity AZMB (3.3 mAh cm−2) using high-mass-loading V2O5 cathode (26 mg cm−2). This study shed light on the strategy of constructing fast-desolvation electrolytes and offered insights for future electrolyte accommodation for high-voltage AZMB cathodes.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Keyword
- aqueous Zn-metal batteries
- gas evolution suppression
- Zn-dendrite mitigation
- electrolyte additive
- Zn metal anode
- Vanadium dissolution alleviation
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Wu, Zhenrui
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Li, Yihu, 1996
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Amardeep, Amarde ...
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Shao, Yijia
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Zhang, Yue
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Zou, Jian
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show more...
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Wang, Liping
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Xu, Jia
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Kasprzak, Dawid
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Hansen, Evan J.
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Liu, Jian
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
- Articles in the publication
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Angewandte Chemi ...
- By the university
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Chalmers University of Technology