Abstract
Worldwide growing commercial interests in applying carbon nanotubes (CNTs) in diverse applications, such as batteries, sensors, catalyst supports, thermal electronics, and high-strength composites, have dramatically expanded the demand for higher CNT production capacity. However, current CNT production is still dominated by relatively high-cost chemical vapor deposition (CVD) methods, which usually involve high temperatures, expensive catalysts, and substantial quantities of nonrenewable petroleum-derived carbon sources. Here, we report that highly dense carbon nanotubes can be derived from yeast-fermented wheat dough scaffolds via a simple, green, and sustainable activation process without using any additional catalysts or extra carbon sources. When the activated wheat dough/carbon nanotube (AWD/CNT) scaffold is used as a sulfur host to prepare cathode for lithium–sulfur (Li–S) battery, the assembled Li–S cell exhibited excellent cyclic performance, with a well-retained capacity of ∼450 mA h g–1 even aft...
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