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Carbon nanotube wools made directly from CO2 by molten electrolysis: Value driven pathways to carbon dioxide greenhouse gas mitigation

zhpd55 添加于 2017/7/20 16:21:06  868次阅读 | 0次推荐 | 0个评论

A climate mitigation comprehensive solution is presented through the first high yield, low energy synthesis of macroscopic length carbon nanotube (“CNT”) wool from CO2 by molten carbonate electrolysis. The CNT wool is of length suitable for weaving into carbon composites and textiles. Growing CO2 concentrations, and the concurrent climate change and species extinction, can be addressed if CO2 becomes a sought resource rather than a greenhouse pollutant. Inexpensive carbon composites formed from carbon wool as a lighter metal, textiles or cement replacement comprise major market sinks to compactly store transformed anthropogenic CO2. 100×-longer CNTs grow on Monel versus steel. Monel, electrolyte equilibration, and a mixed metal nucleation facilitate the synthesis. CO2, the sole reactant in this transformation, is directly extractable from dilute (atmospheric) or concentrated sources, and the analyzed production cost of $660 per ton CNT is cost constrained only by the (low) cost of electricity. Today's market valuation of >$100,000 per ton CNT incentivizes CO2 removal.

作 者:Marcus Johnson, Jiawen Ren, Matthew Lefler, Gad Licht, Juan Vicini, Xinye Liu, Stuart Licht
期刊名称: Materials Today Energy
期卷页: Available online 14 July 2017 第5卷 第期 230–236页
学科领域:化学科学 » 无机化学 » 无机纳米化学
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原文链接:http://www.sciencedirect.com/science/article/pii/S246860691730165X
DOI: 10.1016/j.mtener.2017.07.0032468-6069
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全文地址: 下载
备 注: When most people hear the term "CO2 emissions," they probably think of several negative things: greenhouse gas, pollutant, climate change, political discord, economic burden. But a team of researchers led by Stuart Licht, a chemistry professor at George Washington University, has a vision for transforming CO2 emissions from a pollutant into a valuable resource—all while making a potentially large net profit. In a new study published in Materials Today Energy, the researchers have shown that they can use CO2 and solar thermal energy to produce high yields of millimeter-length carbon nanotube (CNT) wool at a cost of just $660 per ton. The market value of long CNTs like these—which can be woven into textiles to make metals, cement replacements, and other materials—is currently $100,000-$400,000 per ton.
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