期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 2, 期 48, 页码 20659-20666出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ta04732j
关键词
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资金
- National Basic Research Program of China (973 Program) [2014CB239701]
- National Natural Science Foundation of China [21173120, 51372116]
- Natural Science Foundation of Jiangsu Province [BK2011030]
- Fundamental Research Funds for the Central Universities of NUAA [NP2014403]
- Funding of Outstanding Doctoral Dissertation in NUAA [BCXJ14-12]
- Jiangsu Innovation Program for Graduate Education [KYLX-0254]
In this work, a solvothermal strategy combined with following calcination was developed to synthesize a mesoporous NaTi2(PO4)(3)/CMK-3 (NTP/C) nanohybrid as a high-performance anode for next-generation Na-ion batteries (NIBs). Physicochemical characterizations demonstrated that NASICON-type structured NaTi2(PO4)(3) (NTP) nanoparticles (NPs) with high crystallinity were homogeneously embedded in the mesoporous CMK-3 matrix. The mesoporous NTP/C nanohybrid as the anode for NIBs exhibited excellent electrochemical performance with high charge-discharge capability, good rate performance and long cycle life in non-aqueous electrolytes. The nanohybrid electrode delivered large specific capacities of 101, 76, 58, 39 mA h g(-1) at 0.2, 0.5, 1.0 and 2.0 C, respectively, and retained it as high as 62.9 mA h g(-1) even after 1000 cycles at 0.5 C. Compared to the pure NTP electrode, the mesoporous NTP/C hybrid anode with unique meso-nano architecture exhibited better Na-storage ability and indicated its promising application for rechargeable NIBs.
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