Search

Your search keyword '"Li, Wenruo"' showing total 22 results
Start Over Author "Li, Wenruo" Search Limiters Peer Reviewed
22 results on '"Li, Wenruo"'

20. A chemical–mechanical coupling effect induced by charge distribution engineering yields a long-lived phosphorus anode for lithium-ion batteries.

Author

Kong, Weiqiang, Li, Wenruo, Yu, Wenhao, Zhu, Haoyuan, Xu, Shaofeng, Liu, Shun, Cui, Liying, and Wen, Zhongsheng

Abstract

The phosphorus anode has received extensive attention owing to its high theoretical specific capacity, moderate working potential and low cost. However, the unreconciled conflicts between high capacity and high volumetric changes and accompanying sluggish kinetics seriously hinder the utilization of phosphorus for lithium-ion storage. Herein, we propose a unique organic/inorganic phosphorus/polyphthalocyanine/graphene oxide composite to achieve a stable phosphorus-containing anode with ultra-long cycle life. The configured heterogeneous interface is demonstrated to be feasible to accelerate the electron/ion transfer accompanied by enhanced kinetics. Simultaneously, it is endowed with the function of electron giving and shunting, which enables the spontaneous chemical splitting of LiPF6 electrolyte without an exterior potential driving force, altering the formation process of the solid electrolyte interface film and simultaneously suppressing the volumetric changes as well. This unconventional dual heterojunction interface results in a long-lived phosphorus composite electrode with a high coulombic efficiency close to 100% after 10 000 cycles at a high current density of 5 A g−1. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

22. Construction of vacancy-enriched Si@Mn3O4-MnS/C heterostructure toward endurable anode for lithium-ion batteries.

Author

Liu, Shun, Guo, Jiancong, Zhao, Luzheng, Kong, Weiqiang, Li, Wenruo, and Wen, Zhongsheng

Subjects
*LITHIUM-ion batteries, *AMORPHOUS carbon, *ELECTRIC fields, *PHYSICAL mobility
Abstract

• The built-in electric field between the Mn 3 O 4 -MnS enhances the carrier transport. • The core–shell structure enables high mechanical stability. • Mediated pseudo-capacitance is induced by the configuration of Si@Mn 3 O 4 -MnS/C. • The vacancy-enriched Si@Mn 3 O 4 -MnS/C presents excellent cyclability. A configuring vacancy-enriched Mn oxide/sulfide embedded in amorphous carbon layer with highly concentrated vacancies to encapsulate silicon was tentatively explored to overcome the long-term stabilization issues of silicon active center. Our experimental results demonstrate that the configuration of vacancy-enriched Mn 3 O 4 -MnS/carbon hybrid coating layer not only functions as a physical separation layer to prevent silicon from direct contact with electrolytes, but also works as an interesting intermediator to facilitate the structure stabilization and the deep utilization of silicon core center. The surface pseudo-capacitive effect dramatically benefits to the modification of the rate performance of silicon. The synthesized Si@Mn 3 O 4 -MnS/C anode material maintains a high reversible capacity of 830 mAh/g after undergoing 200 charge–discharge cycles at 200 mA g−1 current density. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results