Synthesis of heterostructure SnO2/graphitic carbon nitride composite for high-performance electrochemical supercapacitor

被引：32

作者：

Xu, Yingxi ^{[1
]}

Wang, Li ^{[1
]}

Zhou, Yafang ^{[1
]}

Guo, Jianyu ^{[1
]}

Zhang, Siyong ^{[1
]}

Lu, Yan ^{[2
]}

机构：

[1] Shanghai Normal Univ, Dept Chem, Shanghai 200234, Peoples R China

[2] Shanghai Inst Technol, Sch Engn & Innovat, Shanghai 201418, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2019年 / 852卷

基金：

中国国家自然科学基金;

关键词：

Supercapacitor; Electrode material; SnO2/g-C3N4; composite; Heterostructure; SNO2; NANOCRYSTALS; FACILE SYNTHESIS; OXIDE; NANOSHEETS; G-C3N4; NANOCOMPOSITES; PHOTOCATALYST; CAPACITORS; ELECTRODE; GROWTH;

D O I：

10.1016/j.jelechem.2019.113507

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The SnO2/g-C3N4 heterostructure composite is prepared by a simple hydrothermal reaction. The composite can be a supercapacitor electrode material and exhibits good specific capacitance of 488 F g(-1) at the current density of 1 A g(-1) within a potential window of 0-1 V in 1 M H2SO4 solution. After 5000 cycles, the heterostructure SnO2/g-C3N4 composite shows 97.2% and 73.4% of the capacitance retention rate at the current densities of 10 A g(-1) and 20 A g(-1), respectively. A symmetric supercapacitor device is successfully fabricated based on the SnO2/g-C3N4 composite, which shows a specific capacitance of 153 F g(-1). Moreover, the device can deliver the energy density of 2.8 Wh kg(-1) at the power density of 5684 W kg(-1).

引用

页数：7

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