Efficient Hydrogen Production by Direct Electrolysis of Waste Biomass at Intermediate Temperatures
Efficient Hydrogen Production by Direct Electrolysis of Waste Biomass at Intermediate Temperatures
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DOI：
10.1021/acssuschemeng.8b01701
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发表时间：
2018-07-01
影响因子：
8.4
通讯作者：
Teranishi, Shinya
中科院分区：
文献类型：
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作者：
Hibino, Takashi;Kobayashi, Kazuyo;Teranishi, Shinya
生物质被认为是能源和材料供应的替代原料。然而，缺乏高效、低成本的生物质利用和转化工艺阻碍了生物质的大规模应用。这份报告描述了利用废弃生物质电化学生产氢气，这种方法不需要大量能源，也不需要很高的生产成本。在起始电池电压约为0.3V的情况下，面包渣、柏木木屑和稻壳通过电解产生氢气，阴极产生氢气的高电流效率约为100%，阳极产生二氧化碳的高电流效率约为90%。对于所有测试燃料，每1毫克原料的氢产率为0.1-0.2毫克。电解在与电流成正比的平台电压下持续进行。这些特性归因于羰基功能化介孔碳对阳极反应的高催化活性，以及生物质的主要成分如纤维素、淀粉、木质素、蛋白质和脂肪被有效地用作制氢燃料。
Biomass has been considered as an alternative feedstock for energy and material supply. However, the lack of high-efficiency and low-cost processes for biomass utilization and conversion hinders its large-scale application. This report describes electrochemical hydrogen production from waste biomass that does not require large amounts of energy or high production costs. Hydrogen was produced by the electrolysis of bread residue, cypress sawdust, and rice chaff at an onset cell voltage of ca. 0.3 V, with high current efficiencies of approximately 100% for hydrogen production at the cathode and approximately 90% for carbon dioxide production at the anode. The hydrogen yields per 1 mg of the raw material were 0.1-0.2 mg for all tested fuels. Electrolysis proceeded continuously at plateau voltages that were proportional to the current. These characteristics were attributable to the high catalytic activity of the carbonyl-group functionalized mesoporous carbon for the anode reaction, and that the major components of biomass such as cellulose, starch, lignin, protein, and lipid were effectively utilized as fuels for hydrogen production.