首页|A wood pulp sponge cleaning wipe as a high-performance bioanode material in microbial electrochemical systems for its vast biomass carrying capacity,large capacitance,and small charge transfer resistance

A wood pulp sponge cleaning wipe as a high-performance bioanode material in microbial electrochemical systems for its vast biomass carrying capacity,large capacitance,and small charge transfer resistance

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Microbial electrochemical systems are a promising green and sustainable technology that can transform waste into electricity.Improving conversion efficiency and lowering system costs,particularly for elec-trodes,are the primary directions that promote practical application.Cellulose sponges made from wood pulp have been industrially mass-produced in various application scenarios due to their porosity and green sustainability.In this study,the three-dimensional(3D)porous cellulose sponges carbon(CSC)was obtained by directly carbonizing cellulose sponges at different temperatures(600,700,800,900,1000,and 1100 ℃).It has been successfully used as a high-performance anode in microbial fuel cells(MFCs).The carbonization temperature significantly impacted the materials'specific surface area,con-ductivity,and capacitance.The greater the anode material's carbonization temperature,the lower the charge transfer resistance and the higher the maximum power density(CSC-1100,4.1±0.1 W m-2).The CSC-700's maximum power density(3.62±0.11 W m-2)was the highest power density reported to date among lignocellulose-based anodes with relatively low energy consumption.The pleated multilayer porous surface promotes microbial adhesion and can build thicker biofilms with the highest biomass of 2661±117 μg cm-2(CSC-1100)and containing 86％electrogenic bacteria(Geobacter).To investigate the effect of conducting polymers on the material's surface,we introduced polyaniline and polypyrrole.We found that the CSC-1000/PPy bioanodes produced a maximum power density(4.18±0.05 W m-2),slightly higher than of without polypyrrole-modified(CSC-1000,3.99±0.06 W m-2),indicating that the CSCs anode surface had excellent electron transfer efficiency and could achieve the same amount of energy as the polypyrrole surface.This study introduced a promising method for fabricating high-performance anodes using low-cost,industrialized,and sustainable materials.

PolyanilinePolypyrrolCapacitance anodeElectrogenic biofilmsExtracellular electron transfer

Pinpin Yang、Yaqian Gao、Weihua He、Jingkun An、Jia Liu、Nan Li、Yujie Feng

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School of Environmental Science and Engineering, Academy of Ecology and Environment,Tianjin University,Tianjin 300072,China

State Key Laboratory of Urban Water Resource and Environment,School of Environment,Harbin Institute of Technology,Harbin 150090,China

国家重点研发计划Natural Science Foundation of Heilongjiang Province-Outstanding Youth FoundationState Key Laboratory of Urban Water Resource and Environment(Harbin Institute of Technology)State Key Laboratory of Urban Water Resource and Environment(Harbin Institute of Technology)State Key Laboratory of Urban Water Resource and Environment(Harbin Institute of Technology)National Natural Science Foundation Youth Fund中央高校基本科研业务费专项Youth Fund of Tianjin science and Technology ProjectInnovation Team in Key Areas of the Ministry of Science and TechnologyHeilongjiang Touyan Team

2018YFA0901300YQ2022E0332022DS07ES202224ES20231051908403RFCU571001012220JCQNJC01640

2024

10.1016/j.jmst.2023.08.065

材料科学技术(英文版)
中国金属学会 中国材料研究学会 中国科学院金属研究所

材料科学技术(英文版)

CSTPCD
影响因子：0.657
ISSN：1005-0302
年,卷(期)：2024.181(14)
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