电解质
电导率
功率密度
纳米技术
准固态
材料科学
化学工程
化学
电极
功率(物理)
工程类
色素敏化染料
量子力学
物理
物理化学
作者
Haozhen Dou,Mi Xu,Zhen Zhang,Dan Luo,Aiping Yu,Zhongwei Chen
标识
DOI:10.1002/adma.202401858
摘要
Flexible zinc-air batteries are the leading candidates as the next-generation power source for flexible/wearable electronics. However, constructing the safe and high-performance solid-state electrolytes (SSEs) with intrinsic hydroxide ion (OH-) conduction remains a fundamental challenge. Herein, by adopting the natural and robust cellulose nanofibers (CNFs) as building blocks, the biomass SSEs with penetrating ion and water channels are constructed by knitting the OH--conductive CNFs and water-retentive CNFs together via an energy-efficient tape casting. Benefiting from the abundant ion and water channels with interconnected hydrated OH- wires for fast OH- conduction under nanoconfined environment, the biomass SSEs reveal the high water-uptake, impressive OH- conductivity of 175 mS·cm-1 and mechanical robustness simultaneously, which overcomes the commonly existed dilemma between ion conductivity and mechanical property. Remarkably, the flexible zinc-air batteries assembled with biomass SSEs deliver exceptional cycle lifespan of 310 hours and power density of 126 mW·cm-2. The design methodology for water and ion channels opens a new avenue to design high-performance SSEs for batteries. This article is protected by copyright. All rights reserved.
科研通智能强力驱动
Strongly Powered by AbleSci AI