期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 4, 页码 1421-1427出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta09528c
关键词
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资金
- National Natural Science Foundation of China (NSFC) [51372123, 21404062]
- Postdoctoral Science Foundation of China [2015M581966]
- Natural Science Foundation of Ningbo [2015A610241, 2016A610109]
A novel electrode material, three-dimensional (3D) hierarchical Ni(PO3)(2) nanosheet arrays, is explored via a rational topotactic strategy combining hydrothermal growth with subsequent phosphorylation treatment. The as-synthesized Ni(PO3)(2) nanosheet arrays self-supported on activated carbon cloth (Ni(PO3)(2)@ACC) exhibit superior electrochemical capacitive behaviors to a Ni(OH)(2) analogue with similar structural characteristics. The areal and mass specific capacitances of the arrays are as high as 4.43 F cm(-2) at a current density of 2 mA cm(-2) and 2237 F g(-1) at similar to 1 A g(-1), respectively, which is comparable to the best reported results for Ni-based and Me-POx battery-type electrodes. Furthermore, even at a high rate of 10 mA cm(-2), the arrays maintain similar to 90% charge retention after 2000 cycles, suggesting their robust stability and their very promising applications for energy storage.
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