Jo Hye-Rin, Park Seung-Hee, Ahn Sung Hoon
Department of Bio-Chemical Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 61452, Republic of Korea.
Membranes (Basel). 2022 Dec 8;12(12):1243. doi: 10.3390/membranes12121243.
This study presents a mass-production process for conductive carbon membrane-type sponge electrodes derived from recyclable cellulose biowaste. It includes an all-in-one hydrogel fabrication process for mass production, which significantly shortens the complex and expensive process for the conventional process of catalytic electrodes based on conductive supporting substrates such as the gas diffusion layer (GDL). The presence of pre-adsorbed melamine powder in the all-in-one hydrogel induces internal diffusion of the gaseous reactant for the uniform growth of carbon nanotubes (CNTs) onto the sponge-like porous carbon aerogel with a relatively thick and tortuous pore structure, thereby providing the electrochemical properties and mechanical strength simultaneously required for the air electrodes of rechargeable and quasi solid-state zinc-air batteries.
本研究提出了一种由可回收纤维素生物废料衍生的导电碳膜型海绵电极的大规模生产工艺。它包括一个用于大规模生产的一体化水凝胶制造工艺，该工艺显著缩短了基于诸如气体扩散层（GDL）等导电支撑基板的催化电极传统工艺中复杂且昂贵的流程。一体化水凝胶中预吸附的三聚氰胺粉末的存在会引发气态反应物的内部扩散，从而使碳纳米管在具有相对较厚且曲折孔隙结构的海绵状多孔碳气凝胶上均匀生长，进而同时提供可充电和准固态锌空气电池空气电极所需的电化学性能和机械强度。
