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Phosphate Ion Functionalized Co3 O4 Ultrathin Nanosheets with Greatly Improved Surface Reactivity for High
Teng Zhai1,2, Liming Wan1,2, Shuo Sun1,2
1School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
Abstract:
A surface-modified Co3 O4 ultrathin nanosheet (denoted as PCO) is reported via controllable phosphate ion functionalization for pseudocapacitors. An energy density of 71.6 W h kg-1 (at 1500 W kg-1 ) is achieved by the PCO-based pseudocapacitor. The unique porous nanosheet morphology, high surface reactivity, and fast electrode kinetics of PCO are found to be responsible for the enhanced pseudocapacitive performance.
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