Renewable and high efficient syngas production from carbon dioxide and water through solar energy assisted electrolysis in eutectic molten salts
Renewable and high efficient syngas production from carbon dioxide and water through solar energy assisted electrolysis in eutectic molten salts
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通过太阳能辅助共晶熔盐电解从二氧化碳和水生产可再生高效合成气
DOI：
10.1016/j.jpowsour.2017.07.016
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发表时间：
2017-09
影响因子：
9.2
通讯作者：
王鹏
中科院分区：
文献类型：
--
作者：
吴红军;刘悦;纪德强;李志达;衣冠林;苑丹丹;王宝辉;张中海;王鹏
对不可再生化石燃料的过度依赖导致大气中二氧化碳浓度稳步增加，这被认为是导致全球变暖的关键因素。将二氧化碳有效转化为有用的产品在学术界和工业界都受到高度追捧。在此，提出了一种新的转化策略，通过电解方法在熔盐中将CO2/H2O一步转化为合成气（CO/H2）。该系统的所有能源消耗均来自可持续能源：集中的太阳光加热熔盐，太阳能电池为电解提供电力。共晶Li0.85Na0.61K0.54CO3/nLiOH熔融电解质设计合理，熔点低（<450°C）。合成的合成气含有非常理想的 H2 和 CO 含量，摩尔比 (H2/CO) 可调范围为 0.6 至 7.8，法拉第效率约为 94.5%。在如此低的电解温度下利用可再生能源CO2合成合成气，不仅减少了热损失，减轻了系统腐蚀，提高了运行安全性，而且减少了甲烷的产生，从而提高了合成气的收率，这是一项显着的技术突破，代表着CO2可持续转化为增值产品的一大进步。
Over-reliance on non-renewable fossil fuel leads to steadily increasing concentration of atmospheric CO2, which has been implicated as a critical factor contributing to global warming. The efficient conversion of CO2into useful product is highly sought after both in academic and industry. Herein, a novel conversion strategy is proposed to one-step transform CO2/H2O into syngas (CO/H2) in molten salt with electrolysis method. All the energy consumption in this system are contributed from sustainable energy sources: concentrated solar light heats molten salt and solar cell supplies electricity for electrolysis. The eutectic Li0.85Na0.61K0.54CO3/nLiOH molten electrolyte is rationally designed with low melting point (<450 °C). The synthesized syngas contains very desirable content of H2and CO, with tuneable molar ratios (H2/CO) from 0.6 to 7.8, and with an efficient faradaic efficiency of ∼94.5%. The synthesis of syngas from CO2with renewable energy at a such low electrolytic temperature not only alleviates heat loss, mitigates system corrosion, and heightens operational safety, but also decreases the generation of methane, thus increases the yield of syngas, which is a remarkable technological breakthrough and this work thus represents a stride in sustainable conversion of CO2to value-added product.
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影响因子：
7.2
作者：
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通讯作者：
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影响因子：
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作者：
纪德强;刘悦;李志达;苑丹丹;杨关键;姜梦培;王宇航;于艳艳;吴红军
通讯作者：
吴红军