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- Title
Enhanced electrocatalytic performance of Fe-TiO<sub>2</sub>/N-doped graphene cathodes for rechargeable Li-O<sub>2</sub> batteries.
- Authors
Yang, Jingbo; Li, Yongliang; Mi, Hongwei; Zhang, Peixin; Deng, Libo; Sun, Lingna; Ren, Xiangzhong
- Abstract
The Fe3+-doped TiO2 on nitrogen-doped graphene (Fe-TiO2/N-doped graphene) electrocatalyst is synthesized and employed as cathode material for Li-O2 battery. Fe-TiO2 nanoparticles show uniform dispersion on N-doped graphene with less agglomeration compared with TiO2 nanoparticles. The improvement of electrochemical performance of Fe-TiO2/N-doped graphene electrocatalyst is due to the changed electronic and structural properties, which result in forming Ti–O–Fe bonds and oxygen vacancy sites in the crystalline structure of TiO2. The Fe-TiO2/N-doped graphene electrode delivers a discharge capacity of 13,500 mA h g−1(catalytic) and a cyclic retention of 45 cycles, which are much better compared to the pristine counterpart.
- Subjects
GRAPHENE oxide; ELECTRICAL properties of titanium dioxide; DOPING agents (Chemistry); LITHIUM-ion batteries; CATHODES
- Publication
Journal of Solid State Electrochemistry, 2018, Vol 22, Issue 3, p909
- ISSN
1432-8488
- Publication type
Article
- DOI
10.1007/s10008-017-3841-7