Carbon quantum dots/Ni-Al layered double hydroxide composite for high-performance supercapacitors

被引：55

作者：

Wei, Ying ^{[1
]}

Zhang, Xuelei ^{[1
]}

Wu, Xuanyu ^{[1
]}

Tang, Di ^{[3
]}

Cai, Kedi ^{[1
]}

Zhang, Qingguo ^{[2
]}

机构：

[1] Bohai Univ, Dept Chem, Jinzhou, Peoples R China

[2] Bohai Univ, Coll New Energy, Jinzhou, Peoples R China

[3] Soochow Univ, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Inst Funct Nano & Soft Mat FUNSOM, Suzhou 215123, Peoples R China

来源：

RSC ADVANCES | 2016年 / 6卷 / 45期

基金：

中国国家自然科学基金;

关键词：

ELECTRODE MATERIAL; ENERGY-STORAGE; PHOTOCATALYST; CAPACITANCE; NANOSHEETS; BEHAVIOR; FIBERS; OXIDE;

D O I：

10.1039/c6ra02730j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ultrathin nanoplate-like carbon quantum dots (CQDs)/Ni-Al layered double hydroxide (LDH) composite has been fabricated by a facile one-step solvothermal method. The obtained porous CQDs/NiAl-LDH composite displayed an enlarged specific surface and nanoscale size. As supercapacitor electrode material, the composite exhibited remarkable electrochemical performance with superior specific capacitance of 1794 F g(-1) (at 2 A g(-1)), high rate capability of 967 F g(-1) (at 20 A g(-1)) and excellent cycle performance (about 93% retention over 1500 cycles). The enhanced supercapacitor performance of CQDs/NiAl-LDH electrode should be attributed to the synergistic effect between NiAl-LDH nanosheets and CQDs.

引用

页码：39317 / 39322

页数：6

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