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Your search keyword '"Chen, Meiqiong"' showing total 22 results
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22 results on '"Chen, Meiqiong"'

13. Solar-microbial hybrid device based on oxygen-deficient niobium pentoxide anodes for sustainable hydrogen production† †Electronic supplementary information (ESI) available: Video of the generations of gas by the hybrid device under illumination. See DOI: 10.1039/c5sc03249k Click here for additional data file. Click here for additional data file

Author

Li, Mingyang, He, Xinjun, Zeng, Yinxiang, Chen, Meiqiong, Zhang, Ziyang, Yang, Hao, Fang, Pingping, Lu, Xihong, and Tong, Yexiang

Subjects
Chemistry
Abstract

A new solar-microbial hybrid device based on oxygen-deficient Nb2O5 anodes for sustainable hydrogen generation without external bias was demonstrated., Hydrogen gas is emerging as an attractive fuel with high energy density for the direction of energy resources in the future. Designing integrated devices based on a photoelectrochemical (PEC) cell and a microbial fuel cell (MFC) represents a promising strategy to produce hydrogen fuel at a low price. In this work, we demonstrate a new solar-microbial (PEC–MFC) hybrid device based on the oxygen-deficient Nb2O5 nanoporous (Nb2O5–x NPs) anodes for sustainable hydrogen generation without external bias for the first time. Owing to the improved conductivity and porous structure, the as-prepared Nb2O5–x NPs film yields a remarkable photocurrent density of 0.9 mA cm–2 at 0.6 V (vs. SCE) in 1 M KOH aqueous solution under light irradiation, and can achieve a maximum power density of 1196 mW m–2 when used as an anode in a MFC device. More importantly, a solar-microbial hybrid system by combining a PEC cell with a MFC is designed, in which the Nb2O5–x NPs electrodes function as both anodes. The as-fabricated PEC–MFC hybrid device can simultaneously realize electricity and hydrogen using organic matter and solar light at zero external bias. This novel design and attempt might provide guidance for other materials to convert and store energy.

Published
2015

14. Mo2C/Reduced Graphene Oxide Composites with Enhanced Electrocatalytic Activity and Biocompatibility for Microbial Fuel Cells.

Author

Guo, Wenxian, Chen, Meiqiong, Liu, Xiaoqing, Cheng, Faliang, and Lu, Xihong

Subjects
*MICROBIAL fuel cells, *GRAPHENE oxide, *CORPORATE bonds, *CARBON paper, *BIOCOMPATIBILITY, *CHARGE exchange
Abstract

A simple, cost‐effective strategy was developed to effectively improve the electron transfer efficiency as well as the power output of microbial fuel cells (MFCs) by decorating the commercial carbon paper (CP) anode with an advanced Mo2C/reduced graphene oxide (Mo2C/RGO) composite. Benefiting from the synergistic effects of the superior electrocatalytic activity of Mo2C, the high surface area, and prominent conductivity of RGO, the MFC equipped with this Mo2C/RGO composite yielded a remarkable output power density of 1747±37.6 mW m−2, which was considerably higher than that of CP‐MFC (926.8±6.3 mW m−2). Importantly, the composite also facilitated the formation of 3D hybrid biofilm and could effectively improve the bacteria–electrode interaction. These features resulted in an enhanced coulombic efficiency up 13.2 %, nearly one order of magnitude higher than that of the CP (1.2 %). [ABSTRACT FROM AUTHOR]

Published
2021
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22. Mo 2 C/Reduced Graphene Oxide Composites with Enhanced Electrocatalytic Activity and Biocompatibility for Microbial Fuel Cells.

Author

Guo W, Chen M, Liu X, Cheng F, and Lu X

Abstract

A simple, cost-effective strategy was developed to effectively improve the electron transfer efficiency as well as the power output of microbial fuel cells (MFCs) by decorating the commercial carbon paper (CP) anode with an advanced Mo 2 C/reduced graphene oxide (Mo 2 C/RGO) composite. Benefiting from the synergistic effects of the superior electrocatalytic activity of Mo 2 C, the high surface area, and prominent conductivity of RGO, the MFC equipped with this Mo 2 C/RGO composite yielded a remarkable output power density of 1747±37.6 mW m -2 , which was considerably higher than that of CP-MFC (926.8±6.3 mW m -2 ). Importantly, the composite also facilitated the formation of 3D hybrid biofilm and could effectively improve the bacteria-electrode interaction. These features resulted in an enhanced coulombic efficiency up 13.2 %, nearly one order of magnitude higher than that of the CP (1.2 %)., (© 2021 Wiley-VCH GmbH.)

Published
2021
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