Multi-layer electrode with nano-Li4Ti5O12 aggregates sandwiched between carbon nanotube and graphene networks for high power Li-ion batteries

Jin Hoon Choi, Won Hee Ryu, Kyusung Park, Jeong Dai Jo, Sung Moo Jo, Dae-Soon Lim, Il Doo Kim

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Self-aggregated Li4Ti5O12 particles sandwiched between graphene nanosheets (GNSs) and single-walled carbon nanotubes (SWCNTs) network are reported as new hybrid electrodes for high power Li-ion batteries. The multi-layer electrodes are fabricated by sequential process comprising air-spray coating of GNSs layer and the following electrostatic spray (E-spray) coating of well-dispersed colloidal Li4Ti5O12 nanoparticles, and subsequent air-spray coating of SWCNTs layer once again. In multi-stacked electrodes of GNSs/nanoporous Li4Ti5O12 aggregates/SWCNTs networks, GNSs and SWCNTs serve as conducting bridges, effectively interweaving the nanoporous Li4Ti5O12 aggregates, and help achieve superior rate capability as well as improved mechanical stability of the composite electrode by holding Li4Ti5O12 tightly without a binder. The multi-stacked electrodes deliver a specific capacity that maintains an impressively high capacity of 100 mA h g-1 at a high rate of 100C even after 1000 cycles.

Original languageEnglish
Article number7334
JournalScientific Reports
Volume4
DOIs
Publication statusPublished - 2014 Dec 5

ASJC Scopus subject areas

  • General

Fingerprint Dive into the research topics of 'Multi-layer electrode with nano-Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> aggregates sandwiched between carbon nanotube and graphene networks for high power Li-ion batteries'. Together they form a unique fingerprint.

  • Cite this