Silicon decorated cone shaped carbon nanotube clusters for lithium ion battery anodes

Wei Wang; Isaac Ruiz; Kazi Ahmed; Hamed Hosseini Bay; Aaron S George; Johnny Wang; John Butler; Mihrimah Ozkan; Cengiz S Ozkan

doi:10.1002/smll.201400088

Silicon decorated cone shaped carbon nanotube clusters for lithium ion battery anodes

Small. 2014 Aug 27;10(16):3389-96. doi: 10.1002/smll.201400088. Epub 2014 Apr 19.

Authors

Wei Wang¹, Isaac Ruiz, Kazi Ahmed, Hamed Hosseini Bay, Aaron S George, Johnny Wang, John Butler, Mihrimah Ozkan, Cengiz S Ozkan

Affiliation

¹ Materials Science and Engineering Program, Department of Mechanical Engineering, Department of Electrical Engineering, University of California, Riverside, CA, 92521, USA.

PMID: 24753292
DOI: 10.1002/smll.201400088

Abstract

In this work, we report the synthesis of an three-dimensional (3D) cone-shape CNT clusters (CCC) via chemical vapor deposition (CVD) with subsequent inductively coupled plasma (ICP) treatment. An innovative silicon decorated cone-shape CNT clusters (SCCC) is prepared by simply depositing amorphous silicon onto CCC via magnetron sputtering. The seamless connection between silicon decorated CNT cones and graphene facilitates the charge transfer in the system and suggests a binder-free technique of preparing lithium ion battery (LIB) anodes. Lithium ion batteries based on this novel 3D SCCC architecture demonstrates high reversible capacity of 1954 mAh g(-1) and excellent cycling stability (>1200 mAh g(-1) capacity with ≈ 100% coulombic efficiency after 230 cycles).

Keywords: CNT; anode; energy storage; lithium ion battery; silicon.