Palanisamy Gowthami, Thangarasu Sadhasivam, Oh Tae Hwan
School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Republic of Korea.
Polymers (Basel). 2023 Mar 3;15(5):1294. doi: 10.3390/polym15051294.
Microbial fuel cells (MFCs) provide considerable benefits in the energy and environmental sectors for producing bioenergy during bioremediation. Recently, new hybrid composite membranes with inorganic additives have been considered for MFC application to replace the high cost of commercial membranes and improve the performances of cost-effective polymers, such as MFC membranes. The homogeneous impregnation of inorganic additives in the polymer matrix effectively enhances the physicochemical, thermal, and mechanical stabilities and prevents the crossover of substrate and oxygen through polymer membranes. However, the typical incorporation of inorganic additives in the membrane decreases the proton conductivity and ion exchange capacity. In this critical review, we systematically explained the impact of sulfonated inorganic additives (such as (sulfonated) sSiO, sTiO, sFeO, and s-graphene oxide) on different kinds of hybrid polymers (such as PFSA, PVDF, SPEEK, SPAEK, SSEBS, and PBI) membrane for MFC applications. The membrane mechanism and interaction between the polymers and sulfonated inorganic additives are explained. The impact of sulfonated inorganic additives on polymer membranes is highlighted based on the physicochemical, mechanical, and MFC performances. The core understandings in this review can provide vital direction for future development.
微生物燃料电池（MFCs）在能源和环境领域具有显著优势，可在生物修复过程中产生生物能源。近来，含有无机添加剂的新型混合复合膜被考虑用于MFC，以取代高成本的商业膜，并提升如MFC膜这类具有成本效益的聚合物的性能。无机添加剂在聚合物基体中的均匀浸渍能有效增强其物理化学、热和机械稳定性，并防止底物和氧气透过聚合物膜。然而，膜中典型的无机添加剂掺入方式会降低质子传导率和离子交换容量。在这篇批判性综述中，我们系统地阐述了磺化无机添加剂（如（磺化）二氧化硅、二氧化钛、氧化铁和磺化氧化石墨烯）对用于MFC的不同种类混合聚合物（如全氟磺酸、聚偏氟乙烯、磺化聚醚醚酮、磺化聚芳醚酮、磺化苯乙烯-乙烯-丁烯-苯乙烯共聚物和聚苯并咪唑）膜的影响。解释了聚合物与磺化无机添加剂之间的膜机理及相互作用。基于物理化学、机械和MFC性能，突出了磺化无机添加剂对聚合物膜的影响。本综述中的核心认识可为未来发展提供重要指导方向。
