Journal
RSC ADVANCES
Volume 2, Issue 5, Pages 1751-1754Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ra01263d
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Funding
- 863'' Project [2009AA033101]
- 973'' Projects [2010CB833102]
- NSFC [50972164]
- Science and Technology Planning Project of Guangdong Province [2010A090602001]
- CAS [KJCX2-YW-W26]
- Ministry of Education [109111]
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Porous Li4Ti5O12 coated with few-layer graphene was prepared via the low-temperature pyrolysis of C28H16Br2 at 400 degrees C. The coating layer was very thin and uniform. The coated sample shows superior Li storage performance compared with the as-prepared sample. Capacities of 131 and 104 mA h g(-1) can be reached at current rates of 5 and 10 C, respectively. Moreover, cyclic performance is significantly improved after coating. The capacity decreases from 144.6 to 124.4 mA h g(-1) after 2400 cycles at a current rate of 2 C in a half cell versus Li/Li+, with high capacity retention of 86%.
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