Cerebral Cortex Inspired Bio‐Interface Engineering: Fast Zn Ions Reaction Kinetics for Low‐Temperature Energy Storage
Abstract
ABSTRACT Carbon‐based aqueous zinc‐ion batteries (CAZBs) require stable operation under extremely low temperatures for practical applications, but they are hindered by sluggish Zn 2 + transport within the diffusion layer and desolvation barriers in the Helmholtz layer. Here, a bio‐inspired interface engineering strategy—derived from the high‐volume, high‐speed, and high‐efficiency signal processing capability of the cerebral cortex—is employed to construct hierarchical carbon spheres with sulcus–gyrus architectures (HCSs‐sg). Such HCSs‐sg can effectively imitate the dense neuron distribution in the cerebral cortex and lead to a sharp increase in pseudocapacitive active sites. This biomimetic configuration generates directional micro‐electric fields and ionic concentration gradients, which synergistically accelerate Zn 2 + transport through diffusion‐driven migration and coulombic forces. Simultaneously, the high‐curvature sulcus–gyrus exhibits enhanced Zn 2 + adsorption energy and reduced desolvation barriers, thereby facilitating efficient desolvation and rapid charge transfer at subzero temperatures. As a result, the optimized product delivers a specific capacity of 70 mAh g − 1 at 0.1 A g − 1 under −25°C and maintains a stable coulombic efficiency of nearly 100% over 10 000 cycles at 1 A g − 1 . This biomimetic interface engineering approach can provide a potential design route for aqueous battery applications under extreme‐temperature conditions.
Article Details
Authors (16)
Xiankai Fan
College of Energy Materials and Chemistry, Inner Mongolia Key Laboratory of Low Carbon Catalysis, College of Chemistry and Chemical Engineering
Cuiqin Chao
College of Energy Materials and Chemistry Inner Mongolia Key Laboratory of Low Carbon Catalysis Inner Mongolia University Hohhot P. R. China
Luxiao Zhang
College of Energy Materials and Chemistry, Inner Mongolia Key Laboratory of Low Carbon Catalysis, College of Chemistry and Chemical Engineering
Hao Li
Yujuan Zhao
College of Energy Materials and Chemistry, Inner Mongolia Key Laboratory of Low Carbon Catalysis, College of Chemistry and Chemical Engineering
Yifan Ding
Fanxing Bu
Wanhai Zhou
Laboratory of Advanced Materials, Aqueous Battery Center, College of Smart Materials and Future Energy
Danli liang
College of Energy Materials and Chemistry Inner Mongolia Key Laboratory of Low Carbon Catalysis Inner Mongolia University Hohhot P. R. China
Yuan Chen
School of Chemical and Biomolecular Engineering
Jun Li
Shijie Li
Miao Zhou
Key Laboratory of Optoelectronic Technology and System of Ministry of Education, College of Optoelectronic Engineering, Chongqing University 1 , Chongqing 400044,
Dongliang Chao
Laboratory of Advanced Materials, Aqueous Battery Center, College of Smart Materials and Future Energy
Dongyuan Zhao
Laboratory of Advanced Materials, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, State Key Laboratory of Porous Materials for Separation and Conversion, Fudan University, 220 Handan, Shanghai 200433, P. R. China
Zaiwang Zhao
College of Energy Materials and Chemistry, College of Chemistry and Chemical Engineering