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Hollow carbon spheres with encapsulated germanium as an anode material for lithium ion batteries

Journal Article


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Abstract


  • A novel composite consisting of hollow carbon spheres with encapsulated germanium (Ge@HCS) was synthesized by introducing a germanium precursor into the porous-structured hollow carbon spheres. The carbon spheres not only function as a scaffold to hold the germanium and thus maintain the structural integrity of the composite, but also increase the electrical conductivity. The voids and vacancies that are formed after the reduction of germanium dioxide to germanium provide free space for accommodating the volume changes during discharging-charging processes, thus preventing pulverization. The obtained Ge@HCS composite exhibits excellent lithium storage performance, as revealed by electrochemical evaluation.

Publication Date


  • 2015

Citation


  • Li, D., Feng, C., Liu, H. kun. & Guo, Z. (2015). Hollow carbon spheres with encapsulated germanium as an anode material for lithium ion batteries. Journal of Materials Chemistry A, 3 (3), 978-981.

Scopus Eid


  • 2-s2.0-84918491378

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2277&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1276

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 978

End Page


  • 981

Volume


  • 3

Issue


  • 3

Place Of Publication


  • United Kingdom

Abstract


  • A novel composite consisting of hollow carbon spheres with encapsulated germanium (Ge@HCS) was synthesized by introducing a germanium precursor into the porous-structured hollow carbon spheres. The carbon spheres not only function as a scaffold to hold the germanium and thus maintain the structural integrity of the composite, but also increase the electrical conductivity. The voids and vacancies that are formed after the reduction of germanium dioxide to germanium provide free space for accommodating the volume changes during discharging-charging processes, thus preventing pulverization. The obtained Ge@HCS composite exhibits excellent lithium storage performance, as revealed by electrochemical evaluation.

Publication Date


  • 2015

Citation


  • Li, D., Feng, C., Liu, H. kun. & Guo, Z. (2015). Hollow carbon spheres with encapsulated germanium as an anode material for lithium ion batteries. Journal of Materials Chemistry A, 3 (3), 978-981.

Scopus Eid


  • 2-s2.0-84918491378

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2277&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1276

Has Global Citation Frequency


Number Of Pages


  • 3

Start Page


  • 978

End Page


  • 981

Volume


  • 3

Issue


  • 3

Place Of Publication


  • United Kingdom