Skip to main content
placeholder image

Facile synthesis of Ge@C core-shell nanocomposites for high-performance lithium storage in lithium-ion batteries

Journal Article


Abstract


  • Herein, we report a facile and "green" synthetic route for the preparation of Ge@C core-shell nanocomposites by using a low-cost Ge precursor. Field-emission scanning electron microscopy and transmission electron microscopy analyses confirmed the core-shell nanoarchitecture of the Ge@C nanocomposites, with particle sizes ranging from 60 to 100 nm. Individual Ge nanocrystals were coated by a continuous carbon layer, which had an average thickness of 2 nm. When applied as an anode materials for lithium-ion batteries, the Ge@C nanocomposites exhibited a high initial discharge capacity of 1670 mAh g -1 and superior rate capability. In particular, Ge@C nanocomposite electrodes maintained a reversible capacity of 734 mAh g-1 after repeated cycling at a current density of 800 mA g-1 over 100 cycles. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

UOW Authors


  •   Wang, Guoxiu (external author)

Publication Date


  • 2013

Citation


  • Wang, Y., & Wang, G. (2013). Facile synthesis of Ge@C core-shell nanocomposites for high-performance lithium storage in lithium-ion batteries. Chemistry - An Asian Journal, 8(12), 3142-3146. doi:10.1002/asia.201300858

Scopus Eid


  • 2-s2.0-84888334110

Start Page


  • 3142

End Page


  • 3146

Volume


  • 8

Issue


  • 12

Abstract


  • Herein, we report a facile and "green" synthetic route for the preparation of Ge@C core-shell nanocomposites by using a low-cost Ge precursor. Field-emission scanning electron microscopy and transmission electron microscopy analyses confirmed the core-shell nanoarchitecture of the Ge@C nanocomposites, with particle sizes ranging from 60 to 100 nm. Individual Ge nanocrystals were coated by a continuous carbon layer, which had an average thickness of 2 nm. When applied as an anode materials for lithium-ion batteries, the Ge@C nanocomposites exhibited a high initial discharge capacity of 1670 mAh g -1 and superior rate capability. In particular, Ge@C nanocomposite electrodes maintained a reversible capacity of 734 mAh g-1 after repeated cycling at a current density of 800 mA g-1 over 100 cycles. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

UOW Authors


  •   Wang, Guoxiu (external author)

Publication Date


  • 2013

Citation


  • Wang, Y., & Wang, G. (2013). Facile synthesis of Ge@C core-shell nanocomposites for high-performance lithium storage in lithium-ion batteries. Chemistry - An Asian Journal, 8(12), 3142-3146. doi:10.1002/asia.201300858

Scopus Eid


  • 2-s2.0-84888334110

Start Page


  • 3142

End Page


  • 3146

Volume


  • 8

Issue


  • 12