Solar bipolar cell facilitating carbon dioxide for efficient coproduction of electricity and syngas
Solar bipolar cell facilitating carbon dioxide for efficient coproduction of electricity and syngas
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DOI：
10.1016/j.jpowsour.2022.230985
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发表时间：
2022-02
影响因子：
9.2
通讯作者：
X. Xue;D. Gu;X. Xia;Yuwei Qin;Hongjun Wu;Hong Jiang;Tingting Jiang;Baohui Wang
中科院分区：
文献类型：
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作者：
X. Xue;D. Gu;X. Xia;Yuwei Qin;Hongjun Wu;Hong Jiang;Tingting Jiang;Baohui Wang
在此，首次报道了一种新型的太阳能系统，其通过将太阳能加上二氧化碳供给到太阳能双极电池中来高效地产生合成气和电力。双极太阳能电池完全由太阳能驱动，是一种可充电循环系统，可实现电力和合成气的高效联合生产。太阳能双极电池由氢氧化物熔融电池（Ⅰ）和碳酸盐熔融电池（Ⅱ）组成，氢氧化物熔融电池（Ⅰ）用于制氢，碳酸盐熔融电池（Ⅱ）用于生产一氧化碳，同时产生可充电的电能。由于太阳能热效应和电效应的综合利用，太阳能系统可以通过循环氧化还原反应的电势差进行充电/再充电。该系统可以在太阳能下储存电能（Charge）并产生合成气，然后在不输入太阳能的情况下释放电能（Discharge）和合成气。充放电过程可以循环操作以释放燃料。结果表明，太阳能双极电池在450/800 °C下呈现85%的总体最大库仑效率。该研究为设计一种将可再生能源与不需要的二氧化碳相结合的系统，以获得清洁无污染的排放产品提供了一条新的途径。
Herein, a novel solar system is first reported for the efficient generation of syngas and electricity by feeding solar energy plus carbon dioxide into a solar bipolar cell. The solar bipolar cell, fully driven by solar energy, is a rechargeable cycle system to realize the highly efficient co-production of electricity and syngas. The solar bipolar cell consists of hydroxide molten Cell (Ⅰ) for hydrogen production and carbonate molten Cell (Ⅱ) for carbon monoxide production, simultaneously plus the a generation of rechargeable electricity. Due to the combined utilization of solar thermal and electric effect, the solar system can charged/recharged by the potential difference of the cyclic redox reaction. The system could store electric energy (Charge) and generate syngas under solar and then release electric energy (Discharge) and syngas during not input of solar energy. The charge-discharged processes could be operated circularly for a release of fuel. The results demonstrated that the solar bipolar cell presented an overall maximum Coulomb efficiency of 85% at 450/800 °C. This work provides a new route to design a system which combines the renewable energy with the undesirable carbon dioxide for the clean and pollution-free discharged products.