Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 14, Pages 11295-11301Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am501772a
Keywords
hydrothermal method; anode; TiO2; Na battery; carbon coating
Funding
- Global Frontier R&D Program on Center for Hybrid Interface Materials (HIM) - Ministry of Science, ICT & Future Planning [2013-073298]
- Human Resources Development program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Korea government Ministry of Trade, Industry and Energy [20124010203310]
- National Research Foundation of Korea [2013M3A6B1078875] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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High-power, long-life carbon-coated TiO2 microsphere electrodes were synthesized by a hydrothermal method for sodium ion batteries, and the electrochemical properties were evaluated as a function of carbon content. The carbon coating, introduced by sucrose addition, had an effect of suppressing the growth of the TiO2 primary crystallites during calcination. The carbon coated TiO2 (sucrose 20 wt 96 coated) electrode exhibited excellent cycle retention during 50 cycles (100%) and superior rate capability up to a 30 C rate at room temperature. This cell delivered a high discharge capacity of 155 mAh g(composite)(-1) at 0.1 C, 149 mAh g(composite)(-1) at 1 C, and 82.7 mAh g(composite)(-1) at a 10 C rate, respectively.
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