Details

Autor(en) / Beteiligte

• Qian, Shiwei
• Wu, Xiaoshuai
• Shi, Zhuanzhuan
• Li, Xiaofen
• Sun, Xin
• Ma, Yongjia
• Sun, Wei
• Guo, Chunxian
• Li, ChangMing

Titel

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

Ist Teil von

• Nano research, 2022-06, Vol.15 (6), p.5089-5097

Ort / Verlag

Beijing: Tsinghua University Press

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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.