Flexible and Adaptable Fuel Cell Pack with High Energy Density Realized by a Bifunctional Catalyst

作者：Huihui Wang, Chuang Bai, Ting Zhang, Jun Wei, Yali Li, Fandi Ning, Yangbin Shen, Jin Wang, Xuetong Zhang, Hui Yang, Qingwen Li, Xiaochun Zhou · 发表于：ACS Applied Materials & Interfaces · 年份：2020 · DOI：10.1021/acsami.9b18511 · 被引用次数：26 · 研究领域：Supercapacitor Materials and Fabrication、Electrocatalysts for Energy Conversion、Advanced battery technologies research

A proton exchange membrane fuel cell (PEMFC) system with a hydrogen generator could have higher energy density than flexible batteries and supercapacitors and is possible to meet the urgent demand of flexible electronics. However, a flexible PEMFC pack is still not available due to the absence of a flexible hydrogen generator. To solve this problem, we successfully invented a flexible and adaptable hydrogen generator, which was realized by a new bifunctional aerogel catalyst with the abilities of both storing and producing hydrogen. The flexible hydrogen generator can produce hydrogen at room temperature when the device is inverting, bending, and rotating. By combining this flexible hydrogen generator and the unique flexible PEMFC stack of our group, we originally made a highly flexible and adaptable fuel cell pack with a high theoretical energy density (up to 722 Wh·kg –1 ) and current achieved energy density (135.9 Wh·kg –1 ). Such a PEMFC pack is highly promising to meet the high demand of flexible electronics.