Phosphate Ion Functionalized Co₃O₄ Ultrathin Nanosheets with Greatly Improved Surface Reactivity for High Performance Pseudocapacitors

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• 作者：Teng Zhai ; Liming Wan ; Shuo Sun ; Qi Chen ; Jiao Sun ; Qiuying Xia and Hui Xia
• 刊名：Advanced Materials
• 出版年：2017
• 出版时间：February 17, 2017
• 年：2017
• 卷：29
• 期：7
• 全文大小：2535K
• ISSN：1521-4095

文摘

A surface-modified Co₃O₄ 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.