Modular Design of Functional Glucose Monomer and Block Co‐Polymer toward Stable Zn Anodes

Author:

Yan Yaping12,Mei Ruhuai3,Ma Jiachen12,Huang Yang4,Zhu Ying3,Lang Zhen3,Li Cheng3,Tang Hongmei12,Zhang Wenlan12,Lu Jing5,Schmidt Oliver G.126,Zhang Kai3ORCID,Zhu Minshen12ORCID

Affiliation:

1. Research Center for Materials Architectures, and Integration of Nanomembranes (MAIN) Chemnitz University of Technology 09126 Chemnitz Germany

2. Material Systems for Nanoelectronics Chemnitz University of Technology 09107 Chemnitz Germany

3. Sustainable Materials and Chemistry Department of Wood Technology and Wood‐based Composites University of Göttingen 37077 Göttingen Germany

4. The Hong Kong University of Science and Technology (Guangzhou) Advanced Materials Thrust Nansha Guangzhou Guangdong 511400 China

5. State Key Laboratory for Mesoscopic Physics and Department of Physics Peking University Beijing 100871 China

6. School of Science TU Dresden 01062 Dresden Germany

Abstract

AbstractAqueous Zn batteries employing mildly acidic electrolytes have emerged as promising contenders for safe and cost‐effective energy storage solutions. Nevertheless, the intrinsic reversibility of the Zn anode becomes a focal concern due to the involvement of acidic electrolyte, which triggers Zn corrosion and facilitates the deposition of insulating byproducts. Moreover, the unregulated growth of Zn over cycling amplifies the risk of internal short‐circuiting, primarily induced by the formation of Zn dendrites. In this study, a class of glucose‐derived monomers and a block copolymer are synthesized through a building‐block assembly strategy, ultimately leading to uncover the optimal polymer structure that suppresses the Zn corrosion while allowing efficient ion conduction with a substantial contribution from cation transport. Leveraging these advancements, remarkable enhancements are achieved in the realm of Zn reversibility, exemplified by a spectrum of performance metrics, including robust cycling stability without voltage overshoot and short‐circuiting during 3000 h of cycling, stable operation at a high depth of charge/discharge of 75% and a high current density, >95% Coulombic efficiency over 2000 cycles, successful translation of the anode improvement to full cell performance. These polymer designs offer a transformative path based on the modular synthesis of polymeric coatings toward highly reversible Zn anode.

Funder

Deutsche Forschungsgemeinschaft

HORIZON EUROPE European Research Council

Publisher

Wiley

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