Effect of molten carbonate composition on the generation of carbon material

Effect of molten carbonate composition on the generation of carbon material
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熔融碳酸盐成分对碳材料生成的影响

DOI:
10.1039/c6ra25229j
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发表时间:
2017-01
期刊:
影响因子:
3.9
通讯作者:
张中海
张中海
中科院分区:
化学3区
文献类型:
--
作者:
吴红军;李志达;纪德强;刘悦;衣冠林;苑丹丹;王宝辉;张中海

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二氧化碳被认为是导致全球气候变化的主要罪魁祸首,人们提出了各种策略来降低大气中的二氧化碳水平。在这里,二氧化碳被捕获,然后在电解槽中电化学分解成碳材料,电解槽包括碳酸盐、铁阴极和镍阳极的共晶混合物,温度为600℃,电流密度为50,100,200 mA cm−2。此外,通过比较生成碳产物的摩尔数和电解反应过程中通过的电荷法拉第数,测量了不同电解条件下的库仑效率。本文研究了熔融碳酸盐的组成对碳产物生成的影响,证实了生成的碳与电解液的明显依赖关系。
Carbon dioxide, CO2, is thought to be a main culprit leading to global climate change and a wide variety of strategies have been proposed to reduce atmospheric CO2 levels. Here, CO2 is captured and subsequently electrochemically split into carbon materials in an electrolyzer comprising a eutectic mixture of carbonates, an Fe cathode and a Ni anode, at 600 °C and current densities of 50, 100, 200 mA cm−2. SEM, EDS, XRD and BET are employed to analyze the morphology, elemental composition, crystal structure as well as the BET surface area of the synthetic cathodic products. In addition, coulomb efficiency under different electrolytic conditions is measured via the comparison between moles of formed carbon product and the Faradays of charge passed during the electrolysis reaction. This paper investigated the effect of molten carbonate compositions on carbon product generation, and confirmed the visible dependence of produced carbon on the electrolytes.
二氧化碳在 LiF-Li2CO3 熔盐体系中的溶解度
DOI: 10.1021/acs.jced.6b00043
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