Tuning Desolvation Kinetics with Perovskite‐Type Ion‐Conductive Modulators toward Low‐Temperature Zn Metal Batteries
Source abstract
Abstract
ABSTRACT Aqueous zinc metal batteries (AZMBs) are regarded as the promising candidates for low‐cost, sustainable, but safe energy storage systems. Unfortunately, Zn metal anodes suffer from incomplete desolvation and random dendrite formation, which is attributed to sluggish diffusion kinetics resulted from the strong ion (Zn 2+ )‐dipole (H 2 O) interactions. Herein, to promote the Zn 2+ desolvation and diffusion kinetics, the strategy of constructing perovskite‐type ion‐conductive kinetic modulators of ZnSn(OH) 6 is initially designed and coated on the Zn metal anode (PIC‐ZSH@Zn), regulating ion behaviors against dendrite growth and side reactions of active water. As confirmed by theoretical simulations, COMSOL, time‐of‐flight second‐ionic mass spectroscopy, Raman and various electrochemical analyses, the abundant active sites synergistically weaken Zn 2+ ‐H 2 O interactions to accelerate desolvation to release free Zn 2+ , effectively homogenizing the Zn 2+ flux distribution to preferentially nucleate and plate metallic Zn. Consequently, the as‐fabricated cell maintains reversible stability of 800 h at 10 mA cm −2 with high Coulombic efficiency over 99% under low temperature of 0°C. The paired full cell with PIC‐ZSH@Zn presents a high‐capacity retention of nearly 80% after 1000 cycles at 1.0 A g −1 at 0°C, reinforcing the operation robustness of AZMBs under low temperature environments.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Advanced battery technologies research · Electrocatalysts for Energy Conversion · Thermal Expansion and Ionic Conductivity
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
i‐Lab & CAS Key Laboratory of Nanophotonic Materials and Devices, Suzhou Institute of Nano‐tech and Nano‐bionics Chinese Academy of Sciences Suzhou China
School of Nano‐Tech and Nano‐Bionics University of Science and Technology of China Hefei P. R. China
Guangdong Institute of Semiconductor Micro‐Nano Manufacturing Technology Guangdong China
School of Materials Science and Engineering Xi’an University of Technology Xi’an China
School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices Xi’an Jiaotong University Xi’an China
School of Textile & Clothing Nantong University Nantong China
Helmholtz Institute Ulm (HIU) Ulm Germany
Karlsruhe Institute of Technology (KIT) Karlsruhe Germany
College of Science Nanjing Forestry University Nanjing China
School of Electrical and Electronic Engineering Harbin University of Science and Technology Harbin China
Institute of Agricultural Resources and Environment Jiangsu Academy of Agricultural Sciences Nanjing China
Funding
National Natural Science Foundation of China · Natural Science Foundation of Jiangsu Province · China Postdoctoral Science Foundation
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