Engineering 2D multi-layer graphene-like Co3O4 thin sheets with vertically aligned nanosheets as basic building units for advanced pseudocapacitor materials
Engineering 2D multi-layer graphene-like Co3O4 thin sheets with vertically aligned nanosheets as basic building units for advanced pseudocapacitor materials
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DOI：
10.1039/c5ta05305f
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发表时间：
2015-08
影响因子：
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通讯作者：
Liying Xuan;Lingyun Chen;Qingqing Yang;Weifan Chen;Xiaohua Hou;Yuqian Jiang;Qing Zhang;Yuan
中科院分区：
文献类型：
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作者：
Liying Xuan;Lingyun Chen;Qingqing Yang;Weifan Chen;Xiaohua Hou;Yuqian Jiang;Qing Zhang;Yuan
在没有模板或表面活性剂的情况下，通过直接水热分解硝酸钴（II）和乙酸的混合水溶液，首次大规模制备了以垂直排列的纳米片为基本构建单元的橄榄状二维（2D）多层类石墨烯Co3O4薄片（cqu - cheng - co - o- 1）。所得产品在电流密度为5 mV s−1和1 a g−1时的比电容分别为1752和1862 F g−1，具有良好的倍率性能（电容剩余63.64%）和高循环性能（循环2000次后剩余99.5%）。
Olivaceous two-dimensional (2D) multi-layer graphene-like Co3O4 thin sheets (CQU-Chen-Co-O-1) with vertically aligned nanosheets as basic building units were first prepared on a large scale by direct hydrothermal decomposition of a mixed aqueous solution of cobalt(II) nitrate and acetic acid without the assistance of any template or surfactant. The resulting products exhibited excellent pseudocapacitive performance with a high specific capacitance of 1752 and 1862 F g−1 at the current density of 5 mV s−1 and 1 A g−1, respectively, as well as good rate capability (63.64% capacitance surplus) and high cycling performance (99.5% surplus after 2000 cycles).