首页|Plasma-assisted aerogel interface engineering enables uniform Zn2+flux and fast desolvation kinetics toward zinc metal batteries
Plasma-assisted aerogel interface engineering enables uniform Zn2+flux and fast desolvation kinetics toward zinc metal batteries
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The poor reversibility of Zn anodes induced by dendrite growth,surface passivation,and corrosion,severely hinders the practical applicability of Zn metal batteries.To address these issues,a plasma-assisted aerogel(PAG)interface engineering was proposed as efficient ion transport modulator that can simultaneously regulate uniform Zn2+flux and desolvation behavior during battery operation.The PAG with ordered mesopores acted as an ion sieve to homogenize Zn deposition and accelerate Zn2+flux,which is favorable for corrosion resistance and dendrite suppression.Importantly,the plasma-assisted aerogel with abundant hydrophilic groups can facilitate the desolvation kinetics of Zn2+due to the mul-tiple hydrogen-bonding interaction with the activated water molecules,thus accelerating the Zn2+migra-tion kinetics.Consequently,the Zn/Zn cell assembled with PAG-modified separator demonstrates stable plating and stripping behavior(over 1400 h at 1 mA cm-2)and high Coulombic efficiency(99.8％at 1 mA cm-2 after 1100 cycles),and the Zn||MnO2 full cell shows excellent long-term cycling stability and maintains a high capacity of 154.9 mA h g-1 after 1000 cycles at 1 A g-1.This study provides a fea-sible approach for the large-scale fabrication of aerogel functionalized separators to realize ultra-stable Zn metal batteries.
Zn metal batteriesAerogel interfacePlasmaZn2+migration kineticsDendrite growth
Key Laboratory of Synthetic and Biological Colloids,Ministry of Education,School of Chemical and Material Engineering,Jiangnan University,Wuxi 214122,Jiangsu,China
Shanghai Electrochemical Energy Devices Research Center,Department of Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China
BTR New Material Group Co.,Ltd,Shenzhen 518000,Guangdong,China
National Natural Science Foundation of China(NSFC)Natural Science Foundation of Jiangsu Provinceproject of research on the industrial applicationCentral Laboratory,School of Chemical and Material Engineering,Jiangnan University
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