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Electrocrystallization Regulation Enabled Stacked Hexagonal Platelet Growth toward Highly Reversible Zinc Anodes |
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| Authors: | Zeyu Shen Jiale Mao Guoping Yu Weidong Zhang Shulan Mao Wei Zhong Dr. Hao Cheng Junze Guo Jiahui Zhang Prof. Yingying Lu |
| Affiliation: | 1. State Key Laboratory of Chemical Engineering, Institute of Pharmaceutical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027 China ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215 China These authors contributed equally to this work.;2. Transfar Group Co., Ltd. Transfar Tower, NO.945 Minhe Road, Hangzhou, 311217 China;3. State Key Laboratory of Chemical Engineering, Institute of Pharmaceutical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027 China ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215 China;4. State Key Laboratory of Chemical Engineering, Institute of Pharmaceutical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027 China |
| Abstract: | Realizing durative flattened and dendrite-free zinc (Zn) metal configuration is the key to resolving premature battery failure caused by the internal short circuit, which is highly determined by the crystal growth in the electrocrystallization process. Herein, we report that regulating the molecular structure of the inner Helmholtz plane (HIP) can effectively convert the deposition into activation control by weakening the solvated ion adsorption at the interface. The moderated electrochemical reaction kinetics lower than the adatom self-diffusion rate steers conformal stratiform Zn growth and dominant Zn (0001) texture, achieving crystallographic optimization. Through in situ mediation of electrolyte engineering, orientational plating and stripping behaviors at edge-sites and tailored solvation structure immensely improve the utilization efficiency and total charge passed of Zn metal, even under extreme conditions, including high areal capacity (3 mAh cm−2) and wide temperature range (−40–60 °C). |
| Keywords: | Adsorption Electrocrystallization Electrolyte Preferred Orientation Zn Metal Anode |