Porous hollow Co₃O₄ with rhombic dodecahedral structures for high-performance supercapacitors.
Porous hollow Co₃O₄ with rhombic dodecahedral structures for high-performance supercapacitors.
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DOI：
10.1039/c4nr04782f
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发表时间：
2014-11
期刊：
影响因子：
6.7
通讯作者：
Yizhou Zhang;Yang Wang;Ye-Lei Xie;Tao Cheng;Wenyong Lai;H. Pang;Wei Huang
中科院分区：
文献类型：
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作者：
Yizhou Zhang;Yang Wang;Ye-Lei Xie;Tao Cheng;Wenyong Lai;H. Pang;Wei Huang
以ZIF-67（[Co（mim）2; mim = 2-甲基咪唑]）菱形十二面体微晶为原料，通过煅烧制备了具有菱形十二面体结构的多孔空心Co2 O3。采用该多孔中空Co_2O_3菱形十二面体结构作为电极材料成功构建了超级电容器，其显示出1100 F·g ~（-1）的大比电容，并且在6000次连续充放电循环后仍保持95.1%以上的比电容。具有菱形十二面体结构的多孔中空钴氧化物具有优异的电容性能和稳定性，是高性能超级电容器最有前途的电极材料之一。
Porous hollow Co₃O₄ with rhombic dodecahedral structures were prepared by the calcination of ZIF-67 ([Co(mim)2; mim = 2-methylimidazolate]) rhombic dodecahedral microcrystals. A supercapacitor was successfully constructed by adopting the resulting porous hollow Co₃O₄ rhombic dodecahedral structure as the electrode material, which showed a large specific capacitance of 1100 F g(-1) and retained more than 95.1% of the specific capacitance after 6000 continuous charge-discharge cycles. The excellent capacitive properties and stability mark the porous hollow Co₃O₄ with the rhombic dodecahedral structure as one of the most promising electrode materials for high-performance supercapacitors.