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Mn3O4@C core-shell composites as an improved anode for advanced lithium ion batteries

Journal Article


Abstract


  • Rationally designed nanocomposites with effective surface modification are important to improve the electrochemical performance of Li-ion batteries. Carbon coatings as an economical and practically feasible approach, which would provide good conductivity and promote Li-ion diffusion, leading to improved electrochemical performance. Mn3O4@C core-shell nanorods were prepared using the synchronous reduction and decomposition of acetylene. The resulting Mn3O4@C core-shell nanorods possess a one dimensional shape, porous structure and uniform carbon layer (���3 nm), which result in electrochemical stability. When tested as anodes, they deliver a specific capacity of 765 mA h g-1 after 100 cycles at a current density of 500 mA g-1, which is considerably higher than pure Mn3O4 nanorods. Even at a current density of 2 A g-1, the Mn3O4@C core-shell nanorods can maintain 380 mA h g-1. Their excellent lithium storage performance can be ascribed to the uniform carbon coating layer as well as their unique one dimensional porous structure.

Publication Date


  • 2015

Citation


  • Ma, X., Zhai, Y., Wang, N., Yang, J., & Qian, Y. (2015). Mn3O4@C core-shell composites as an improved anode for advanced lithium ion batteries. RSC Advances, 5(58), 46829-46833. doi:10.1039/c5ra07394d

Scopus Eid


  • 2-s2.0-84930934123

Start Page


  • 46829

End Page


  • 46833

Volume


  • 5

Issue


  • 58

Place Of Publication


Abstract


  • Rationally designed nanocomposites with effective surface modification are important to improve the electrochemical performance of Li-ion batteries. Carbon coatings as an economical and practically feasible approach, which would provide good conductivity and promote Li-ion diffusion, leading to improved electrochemical performance. Mn3O4@C core-shell nanorods were prepared using the synchronous reduction and decomposition of acetylene. The resulting Mn3O4@C core-shell nanorods possess a one dimensional shape, porous structure and uniform carbon layer (���3 nm), which result in electrochemical stability. When tested as anodes, they deliver a specific capacity of 765 mA h g-1 after 100 cycles at a current density of 500 mA g-1, which is considerably higher than pure Mn3O4 nanorods. Even at a current density of 2 A g-1, the Mn3O4@C core-shell nanorods can maintain 380 mA h g-1. Their excellent lithium storage performance can be ascribed to the uniform carbon coating layer as well as their unique one dimensional porous structure.

Publication Date


  • 2015

Citation


  • Ma, X., Zhai, Y., Wang, N., Yang, J., & Qian, Y. (2015). Mn3O4@C core-shell composites as an improved anode for advanced lithium ion batteries. RSC Advances, 5(58), 46829-46833. doi:10.1039/c5ra07394d

Scopus Eid


  • 2-s2.0-84930934123

Start Page


  • 46829

End Page


  • 46833

Volume


  • 5

Issue


  • 58

Place Of Publication