Abstract A nanostructured sulfur/polypyrrole binary composite was prepared by a simple one-step ballmilling without heat-treatment. High resolution transmission and scanning electronic microscopy showed the formation of a highly developed branched structure consisting of polypyrrole with uniform sulfur coating on its surface. Exclusion of heat-treatment in the composite preparation avoided the sulfur loss; the composite contained 65wt% of sulfur. AC impedance spectroscopy data exhibited remarkable reduction in charge transfer resistance of the composite compared with pristine sulfur. This may be due to the high conductivity and large surface area of polypyrrole. This charge transfer enhancement led to the electrochemical performance improvement of the composite cathode, delivering first discharge capacity of 1320mAhg−1.
The possibility and effectiveness of using sulfur dioxide and hydrogen sulfide as the fuel in lowtemperature
fuel cells at the sulfuric acid production site has been investigated. A fuel cell has been designed
and ...
Zhao, Yan; Zhang, Yongguang; Bakenova, Zagipa; Bakenov, Zhumabay(Frontiers in Energy Research., http://journal.frontiersin.org/article/10.3389/fenrg.2015.00002/abstract, 2015-02-02)
High specific energy and low cost flexible lithium/sulfur batteries have attracted significant
attention as a promising power source to enable future flexible and wearable electronic
devices. Here, we review recent ...
Zhang, Yongguang; Zhao, Yan; Bakenov, Zhumabay(Nanoscale Research Letters., http://www.nanoscalereslett.com/content/9/1/137, 2014)
A novel sulfur/graphene nanosheet (S/GNS) composite was prepared via a simple ball milling of sulfur with
commercial multi-layer graphene nanosheet, followed by a heat treatment. High-resolution transmission and
scanning ...