Kaiquan He, Junlong Feng, Xiaowei Wu, Ziqin Liu, Ye Zhang, Pu Hu, Chaoqun Shang
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引用次数: 0
Abstract
The soluble lithium polysulfides' shuttle effect impedes the practical application of Li–S batteries with high theoretical energy density. To confine the active S species in the cathode region, in this work, an artificial interlayer based on the composition of TiO(PO) (TOPO) and N-doped carbon nanotube (NCNT) is introduced to hinder the lithium polysulfides’ shuttle effect and enhance the reaction kinetics of active S species. The TOPO provides sufficient chemical bonding to soluble lithium polysulfides and fast Li migration, while the NCNT ensures fast electron transport to the transformation of absorbed lithium polysulfides. Thanks to the synergistic combination of TOPO and NCNT, at 0.1 C, the initial discharge specific capacity of corresponding Li–S batteries is 1483.55 mAh g, while at 1 C, a capacity decay of 0.14 % per cycle is achieved for 400 cycles.
期刊介绍:
Materials Today Chemistry is a multi-disciplinary journal dedicated to all facets of materials chemistry.
This field represents one of the fastest-growing areas of science, involving the application of chemistry-based techniques to the study of materials. It encompasses materials synthesis and behavior, as well as the intricate relationships between material structure and properties at the atomic and molecular scale. Materials Today Chemistry serves as a high-impact platform for discussing research that propels the field forward through groundbreaking discoveries and innovative techniques.