Tuning electrospinning hierarchically porous nanowires anode for enhanced bioelectrocatalysis in microbial fuel cells  

作　　者：Shiwei Qian Xiaoshuai Wu Zhuanzhuan Shi Xiaofen Li Xin Sun Yongjia Ma Wei Sun Chunxian Guo ChangMing Li 

机构地区：[1]Institute for Advanced Cross-field Science and College of Life Science,Qingdao University,Qingdao 266071,China [2]Institute of Materials Science and Devices,School of Materials Science and Engineering,Suzhou University of Science and Technology,Suzhou 215011,China [3]College of Chemistry and Chemical Engineering,Hainan Normal University,Haikou 571158,China

出　　处：《Nano Research》2022年第6期5089-5097,共9页纳米研究（英文版）

基　　金：the National Key Research and Development Program of China(No.2021YFA0910400);the National Natural Science Foundation of China(Nos.21605110 and 21972102);Natural Science Research Foundation of Jiangsu Higher Education Institutions(Nos.19KJB150038 and 21KJB180018);Natural Science Foundation of Suzhou University of Science and Technology(Nos.XKQ2018014 and XKZ2019011)。

摘　　要：Pore structure plays critical roles in electrode kinetics but very challenging to tailor porous nanowires with rationally distributed pore sizes in a bioelectrochemical system.Herein a hierarchically porous nanowires-material is delicately tuned for an optimal pore structure by adjusting the weight percentage of SiO_(2)-hard template in an electrospinning precursor solution.The asprepared optimal electrospinning nanowires further used as an anode of microbial fuel cells(MFCs),delivering a maximum output power density of 1,407.42 mW·m^(−2)with 4.24 and 10 times higher than that of the non-porous fiber and carbon cloth anode,respectively.The great enhancement is attributed to the rational pore structure which offers the largest surface area while the rich-mesopores well match with the size of electron mediators for a high density of catalytic centers.This work provides thoughtful insights to design of hierarchical porous electrode for high-performance MFCs and other bioelectrochemical system devices.

关 键 词：hierarchically porous nanowires microbial fuel cells interfacial electron transfer BIOFILM 

分 类 号：TM911.45[电气工程—电力电子与电力传动]