基于水溶性多金属氧酸盐的光催化燃料电池

doi:10.7503/cjcu20160796

高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (6): 1082.doi: 10.7503/cjcu20160796

基于水溶性多金属氧酸盐的光催化燃料电池

吴伟兵¹(), 李建¹, 刘聪敏³, 张磊⁴, 戴红旗¹, 刘伟²()

1. 南京林业大学轻工科学与工程学院, 江苏省制浆造纸科学与技术重点实验室, 南京 210037
2. 湖南大学化学化工学院, 长沙 410082
3. 国电新能源技术研究院, 北京 102209
4. 南京邮电大学材料科学与工程学院, 南京 210046

收稿日期:2016-11-16 出版日期:2017-06-10 发布日期:2017-05-23
作者简介:联系人简介: 刘伟, 男, 博士, 主要从事生物质能源和材料方面的研究. E-mail: weiliu_toya@yahoo.com;吴伟兵, 男, 博士, 副教授, 主要从事生物质能源和材料方面的研究. E-mail: wbwu@njfu.edu.cn
基金资助:
国家自然科学基金(批准号: 61571239, 31470599)资助.

Water Soluble Polyoxometalate-based Photocatalytic Fuel Cell^†

WU Weibing^1,^*(), LI Jian¹, LIU Congmin³, ZHANG Lei⁴, DAI Hongqi¹, LIU Wei^2,^*()

1. Jiangsu Provincial Key Lab of Pulp & Paper Science & Technology, College of Light Industry Science & Engineering,Nanjing Forestry University, Nanjing 210037, China;
2. College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
3. Guodian New Energy Technology Research Institute, Beijing 102209, China
4. School of Materials Science & Engineering, Nanjing University of Posts and Telecommunications,Nanjing 210046, China;

Received:2016-11-16 Online:2017-06-10 Published:2017-05-23
Contact: WU Weibing,LIU Wei E-mail:wbwu@njfu.edu.cn;weiliu_toya@yahoo.com
Supported by:
† Supported by the National Natural Science Foundation of China(Nos.31200453, 31470599).

摘要/Abstract

摘要：

以水溶性多金属氧酸盐作为光催化剂和电子载体构建了一种新型光催化燃料电池. 该光催化燃料电池发生燃料的均相光催化降解反应, 可实现在无光照情况下的持续放电. 使用生物柴油副产物甘油作为燃料时, 该光催化燃料电池的输出功率达0.24 mW/cm². 在持续光照条件下, 电池可长时间运转近50 h, 电流稳定在0.75 mA/cm²以上. 甘油在电池中可持续循环放电, 根据实际的反应程度可被转化为醛和酸, 进一步氧化得到CO_x. 对多种有机燃料的应用表明该光催化燃料电池具有广泛的适用性.

关键词: 燃料电池, 多金属氧酸盐, 光催化, 甘油, 生物质

Abstract:

A novel photocatalytic fuel cell using water soluble polyoxometalates(POM) as photocatalyst and charge carrier was built. The fuel oxidation in this study is a homogeneous decomposition reaction that occurred in electrolyte solution and the cell could generate electricity in dark. Using bio-glycerols as fuels, the power density of the photocatalytic fuel cell could reach 0.24 mW/cm². The cell worked steadily for nearly 50 h with current above 0.75 mA under continuous irradiation. Theoretically, the glycerol fuel can be either partially converted to aldehydes and acids, or fully converted to CO_x, depending on the degree of the oxidization reactions. Ultimately, this novel photoactivated hybrid fuel cell could expand fuel supply and utilization.

Key words: Fuel cell, Polyoxometalate, Photocatalysis, Glycerol, Biomass

中图分类号:

O644

TrendMD:

吴伟兵, 李建, 刘聪敏, 张磊, 戴红旗, 刘伟. 基于水溶性多金属氧酸盐的光催化燃料电池. 高等学校化学学报, 2017, 38(6): 1082.

WU Weibing, LI Jian, LIU Congmin, ZHANG Lei, DAI Hongqi, LIU Wei. Water Soluble Polyoxometalate-based Photocatalytic Fuel Cell^†. Chem. J. Chinese Universities, 2017, 38(6): 1082.

图/表 12

Fig.1 Comparison of traditional photocatalytic fuel cell with TiO2 photo anode(A) and water soluble polyoxometalates based photocatalytic fuel cell(B)

Fig.2 Voltage-current and power-current plots with different concentrations of PMo12c(Glycerol)=1 mol/L. Voltage: solid line;power density: dash line.

Fig.3 Voltage-current and power-current plots with different concentrations of glycerol c(PMo12)=28.1 mmol/L. Voltage: solid line; power density: dash line.

Fig.4 Voltage-current and power-current plots of five repeated irradiation-discharge cycles c(Glycerol)=1 mol/L; c(PMo12)=13.3 mmol/L. Voltage: solid line; power density: dash line.

Fig.5 Current curve of continuous performance test with(a) and without(b) light irradiation c(Glycerol)=1 mol/L; c(PMo12)=13.3 mmol/L.

Fig.6 Discharge current density-time plot in the cycles of light-irradiation and discharge The anode electrolyte was pretreated by light-irradiation for 7 h.

Fig.7 Typical structure of polyoxometalate H3PMo12O40(A) and schematic illustration of the principle of the photocatalytic fuel cell(B)

Fig.8 1H NMR spectra of pure glycerol(a) and glycerol-PMo12 complex(b)

Fig.9 Proposed reaction pathway for glycerol oxidation by photoexcited PMo12 in aqueous solution

Fig.10 1H NMR spectrum of glycerol and PMo12 after 5 h photocatalytic reactionc(Glycerol)=1 mol/L, c(PMo12)=13.3 mmol/L.

Table 1 Analysis of the emission gas*

Product	Molar fraction(%)
Helium	29.675
Oxygen	8.013
Nitrogen	27.528
Carbon monoxide	0.004
Carbon dioxide	0.126

Fig.11 Comparison of cell performance powered with different fuelsFuel: a. EtOH; b. glycol; c. glucose; d. DMF; e. ethylenediamine; f. oxalic acid.The initial feed concentrations for all fuels are: EtOH, glycol and glucose: 1 mol/L, DMF: 4 mol/L, ethylenediamine and oxalic acid: 0.5 mol/L; PMo12 13.3 mmol/L.

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基于水溶性多金属氧酸盐的光催化燃料电池

Water Soluble Polyoxometalate-based Photocatalytic Fuel Cell^†

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基于水溶性多金属氧酸盐的光催化燃料电池

Water Soluble Polyoxometalate-based Photocatalytic Fuel Cell†

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Water Soluble Polyoxometalate-based Photocatalytic Fuel Cell^†