Constructing robust heterostructured interface for anode-free zinc batteries with ultrahigh capacities

Xinhua Zheng, Zaichun Liu, Jifei Sun, Ruihao Luo, Kui Xu, Mingyu Si, Ju Kang, Yuan Yuan, Shuang Liu, Touqeer Ahmad, Taoli Jiang, Na Chen, Mingming Wang, Yan Xu, Mingyan Chuai, Zhengxin Zhu, Qia Peng, Yahan Meng, Kai Zhang, Weiping Wang and Wei Chen ()
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Xinhua Zheng: University of Science and Technology of China
Zaichun Liu: University of Science and Technology of China
Jifei Sun: University of Science and Technology of China
Ruihao Luo: University of Science and Technology of China
Kui Xu: University of Science and Technology of China
Mingyu Si: Beijing Institute of Petrochemical Technology
Ju Kang: Beijing Institute of Petrochemical Technology
Yuan Yuan: University of Science and Technology of China
Shuang Liu: University of Science and Technology of China
Touqeer Ahmad: University of Science and Technology of China
Taoli Jiang: University of Science and Technology of China
Na Chen: University of Science and Technology of China
Mingming Wang: University of Science and Technology of China
Yan Xu: University of Science and Technology of China
Mingyan Chuai: University of Science and Technology of China
Zhengxin Zhu: University of Science and Technology of China
Qia Peng: University of Science and Technology of China
Yahan Meng: University of Science and Technology of China
Kai Zhang: University of Science and Technology of China
Weiping Wang: University of Science and Technology of China
Wei Chen: University of Science and Technology of China

Nature Communications, 2023, vol. 14, issue 1, 1-12

Abstract: Abstract The development of Zn-free anodes to inhibit Zn dendrite formation and modulate high-capacity Zn batteries is highly applauded yet very challenging. Here, we design a robust two-dimensional antimony/antimony-zinc alloy heterostructured interface to regulate Zn plating. Benefiting from the stronger adsorption and homogeneous electric field distribution of the Sb/Sb2Zn3-heterostructured interface in Zn plating, the Zn anode enables an ultrahigh areal capacity of 200 mAh cm−2 with an overpotential of 112 mV and a Coulombic efficiency of 98.5%. An anode-free Zn-Br2 battery using the Sb/Sb2Zn3-heterostructured interface@Cu anode shows an attractive energy density of 274 Wh kg−1 with a practical pouch cell energy density of 62 Wh kg−1. The scaled-up Zn-Br2 battery in a capacity of 500 mAh exhibits over 400 stable cycles. Further, the Zn-Br2 battery module in an energy of 9 Wh (6 V, 1.5 Ah) is integrated with a photovoltaic panel to demonstrate the practical renewable energy storage capabilities. Our superior anode-free Zn batteries enabled by the heterostructured interface enlighten an arena towards large-scale energy storage applications.

Date: 2023
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DOI: 10.1038/s41467-022-35630-6

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