Tandem Chemistry with Janus Mesopores Accelerator for Efficient Aqueous Batteries

• DOI: 10.1021/jacs.3c14019
• Publication Date: 2024-02-23T19:43:31Z
• Authors: Lipeng Wang; Bao Zhang; Wanhai Zhou; Zaiwang Zhao; Xin Liu; Ruizheng Zhao; Zhihao Sun; Hongpeng Li; Xia Wang; Tengsheng Zhang; Hongrun Jin; Wei Li; Ahmed Elzatahry; Yasser Hassan; Hong Jin Fan; Dongyuan Zhao; Dongliang Chao
• Keywords: Tandem

A reliable solid electrolyte interphase (SEI) on the metallic Zn anode is imperative for stable Zn-based aqueous batteries. However, incompatible Zn-ion reduction processes, scilicet simultaneous adsorption (capture) and desolvation (repulsion) of Zn2+(H2O)6, raise kinetics stability challenges design SEI. Here, we demonstrate a tandem chemistry strategy to decouple accelerate concurrent processes Zn2+ cluster at inner Helmholtz layer. An electrochemically assembled perforative mesopore SiO2 with hydrophilic −OH hydrophobic −F groups serves as Janus mesopores accelerator boost fast reaction. Combining in situ electrochemical digital holography, molecular dynamics simulations, spectroscopic characterizations reveals that capture clusters from bulk then repulse coordinated H2O molecules solvation shell achieve ion process. The resultant symmetric batteries exhibit reversible cycles over 8000 2000 h under high current densities 4 10 mA cm–2, respectively. feasibility further evidenced both Zn//VO2 Zn//I2 batteries, it might be universal other metal-ion