期刊
JOURNAL OF MATERIALS RESEARCH
卷 33, 期 9, 页码 1155-1166出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1557/jmr.2017.449
关键词
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资金
- National Natural Science Foundation of China [51301064, 51572129]
- International S&T Cooperation Program of China [2016YFE0111500]
- Natural Science Foundation of Jiangsu Province [BK20170036, BK20160835]
- QingLan Project of Jiangsu Province
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Fundamental Research Funds for the Central Universities [30915011204, 30916011352]
- Russian Foundation for Basic Research [16-29-06439]
- Natural Science Foundation of China [51602158]
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry (Sun Yat-Sen University, Guangzhou, China)
In this article, we report the synthesis of highly packed graphene oxide-based electrodes (1.25 g/cm(3)) with a three-dimensional multiscale porous structure (denoted as MPGP) through the ZnO nanodisk (100-5(X) nm) template and subsequent H2O2 treatment. Consequently, MPGP with a macropore diameter of 100 nm and a mesopore diameter of 2-3 nm was fabricated as the electrode for supercapacitors (SCs). Significantly, the MPGP achieves a high-volumetric capacitance of 327 F/cm(3) (262 F/g) at a current density of 1 A/g and retains 240 F/cm(3) (192 F/g) at a current density of 16 A/g in 3 M KOH solution. More importantly, it was also capable of delivering a high-volumetric energy density as well as power density in a SC device. Our work shows that the capability of preparing highly packed graphene-based electrodes with high-volumetric as well as specific capacitance is critical for the application of SCs.
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