A Flexible and High-Voltage Internal Tandem Supercapacitor Based on Graphene-Based Porous Materials with Ultrahigh Energy Density

被引：58

作者：

Zhang, Fan ^{[1
,2
]}

Lu, Yanhong ^{[1
,2
]}

Yang, Xi ^{[1
,2
]}

Zhang, Long ^{[1
,2
]}

Zhang, Tengfei ^{[1
,2
]}

Leng, Kai ^{[1
,2
]}

Wu, Yingpeng ^{[1
,2
]}

Huang, Yi ^{[1
,2
]}

Ma, Yanfeng ^{[1
,2
]}

Chen, Yongsheng ^{[1
,2
]}

机构：

[1] Nankai Univ, Key Lab Funct Polymer Mat, Tianjin 300071, Peoples R China

[2] Nankai Univ, Ctr Nanoscale Sci & Technol, Inst Polymer Chem, Coll Chem, Tianjin 300071, Peoples R China

来源：

SMALL | 2014年 / 10卷 / 11期

关键词：

FUEL-CELL STACKS; ELECTRODE MATERIALS; AQUEOUS SUPERCAPACITORS; CARBON MATERIALS; SURFACE-AREA; IONIC LIQUID; OXIDE SHEETS; PORE-SIZE; PERFORMANCE; FABRICATION;

D O I：

10.1002/smll.201303240

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Pursuing higher working voltage and packaged energy density, an internal tandem supercapacitor has been successfully designed and fabricated based on graphene-based porous carbon hybrid material. Compared with the packaged energy density of 27.2 Wh kg(cell)(-1) and working voltage of 3.5 V using EMIMBF4 electrolyte for the conventional single-cell supercapacitor, the internal tandem device with the same material achieves a much higher working voltage of 7 V as well as a significantly improved energy density of 36.3 Wh kg(cell)(-1) (increased by 33%), which is also about 7 times of that of the state-of-art commercial supercapacitors. A flexible internal tandem device is also designed and fabricated and demonstrated similar excellent performance.

引用

页码：2285 / 2292

页数：8

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