Towards High‐Performance Aqueous Zinc Batteries via a Semi‐Conductive Bipolar‐Type Polymer Cathode

作者：Lei Yan, Qiang Zhu, Yae Qi, Jie Xu, Peng Yu, Jie Shu, Jing Ma, Yonggang Wang · 发表于：Angewandte Chemie International Edition · 年份：2022 · DOI：10.1002/anie.202211107 · 被引用次数：133 · 研究领域：Advanced battery technologies research、Advanced Battery Materials and Technologies、Conducting polymers and applications

Abstract Aqueous Zn‐organic batteries have received considerable attention owing to their green, low‐cost and high safe nature. Unfortunately, organic materials generally exhibit insulator nature (≈10−10 S cm−1), and most of reported promising performances of Zn‐organic batteries are achieved with a low mass‐loading (≈2 mg cm−2) in cathode, which is far away from practical application (10 mg cm−2). Herein, we demonstrate a semi‐conductive polymer poly(1,8‐diaminonaphthalene) (PDAN) cathode material for Zn batteries, which shows a moderate electronic conductivity (5.9×10−5 S cm−1). Theoretical calculations and in situ/ex situ analysis reveal that the cathode involves a bipolar‐type charge storage mechanism. Accordingly, the Zn//PDAN cell exhibits a promising capacity (140 mAh g−1at 0.1 A g−1) and a remarkable cycle stability (1000 cycles without capacity fading) at a high mass‐loading (10 mg cm−2). These encouraging results shed light on the design of advanced organic electrode.