期刊
MATTER
卷 5, 期 12, 页码 4363-4378出版社
CELL PRESS
DOI: 10.1016/j.matt.2022.08.025
关键词
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资金
- National Natural Science Foundation of China [51972346, 52172263, 51932011]
- Hunan Natural Science Fund for Distinguished Young Scholar [2021JJ10064]
- Program of Youth Talent Support for Hunan Province [2020RC3011]
- Innovation-Driven Project of Central South University [2020CX024]
- Fundamental Research Funds for the Central Universities of Central South University [202321024]
This study proposes a disordered zinc silicate (ZSO) artificial solid electrolyte interphase with high Zn2+ conductivity to overcome the challenges in aqueous Zn-based batteries. The disordered ZSO interphase enables fast Zn2+ transport and reversible Zn plating/stripping, leading to dendrite-free Zn metal anode. The Zn@ZSO//NH4V4O10 battery shows a capacity retention of 90.1% over 1,000 cycles, while the Zn@ZSO//I-2 battery retains 97.98% of capacity after 60 hours of shelving.
The issues of Zn dendrite and severe Zn2+ transport destabilization in the electrode/electrolyte interface have been the main obstacles to the commercialization of aqueous Zn-based batteries. Here, a disordered zinc silicate ( ZSO) artificial solid electrolyte interphase with high Zn2+ conductivity (9.29 mS center dot cm(-1)) is proposed to address these dilemmas. The disordered ZSO interphase possesses sufficient tunnels for fast Zn2+ transport and highly reversible Zn plating/stripping, which can redistribute the Zn2+ flux and guide uniform Zn deposition to achieve a dendrite-free Zn metal anode. As a proof of concept in zinc-ion batteries, the Zn@ZSO//NH4V4O10 battery delivers a capacity of 336.8mAh center dot g(-1) at 0.2 A center dot g(-1), with a capacity retention of 90.1% at 5 A center dot g(-1) over 1,000 cycles. As for the Zn@ZSO//I-2 battery, by inhibiting I-3(-) diffusion, 97.98% of capacity is retained after shelving for 60 h. This work provides enlightenment into interface designing and iodide diffusion suppression to accelerate the commercialization of high- performance zinc-based batteries.
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