Graphene foam integrated with lithium titanate as anode of Li ion batteries
Graphical abstract: Integrated graphene foam supported LTO electrodes are synthesized via a hydrothermal method and exhibit a noticeable electrochemical performance as cathode of Li ion batteries. - Highlights: • Integrated graphene foam supported LTO electrodes are synthesized. • Self-supported GF/LTO electrodes show high electrochemical performance. • Integrated porous architecture is favorable for capacity enhancement. - Abstract: In this work, we construct a binder-free electrode by integrating Li{sub 4}Ti{sub 5}O{sub 12} (LTO) nanoparticles onto free-standing graphene foam (GF) via hydrothermal method. The CVD-grown GF is used as the backbone for the deposition of LTO nanoparticles of 20–50 nm. Enhanced reaction kinetics including fast ion/electron transfer is achieved with the help of conductive GF matrix. The electrochemical performance of the VG/LTO as the anode of Li ion batteries (LIBs) are studied and demonstrated with a capacity of 171 mAh g{sup −1} at 1 C, and good cycles with a capacity retention of 77%. High-rate capability is also verified with a capacity of 108 mAh g{sup −1} at 10 C. The designed porous integrated architecture is favorable for the diffusion of ion/electrons, and good contact with the electrolyte. Our results provide a new way for developing high-performance anode of LIBs.
- OSTI ID:
- 22730485
- Journal Information:
- Materials Research Bulletin, Vol. 96; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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