Plasma-Assisted Synthesis of NiSe2 Ultrathin Porous Nanosheets with Selenium Vacancies for Supercapacitor

被引：113

作者：

Chang, Ailiu ^{[1
,2
]}

Zhang, Chao ^{[1
,2
]}

Yu, Yu ^{[1
,2
]}

Yu, Yifu ^{[1
,3
]}

Zhang, Bin ^{[1
,2
]}

机构：

[1] Tianjin Univ, Sch Sci, Dept Chem, Tianjin Key Lab Mol Optoelect Sci, 135 Yaguan Rd,Haihe Educ Pk, Tianjin 300354, Peoples R China

[2] Collaborat Innovat Ctr Chem Sci & Engn, 92 Weijin Rd, Tianjin 300072, Peoples R China

[3] Tianjin Normal Univ, Tianjin Int Joint Res Ctr Surface Technol Energy, Tianjin 300387, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 49期

基金：

中国国家自然科学基金;

关键词：

plasma; porous; selenium vacancies; supercapacitor; two-dimensional materials; HIGH-PERFORMANCE; GRAPHENE; ELECTROCATALYST; NANOSTRUCTURES; ELECTRODES; DEFECTS; FILM;

D O I：

10.1021/acsami.8b16072

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Two-dimensional (2D) NiSe2 nanosheets with porous ultrathin structure and selenium vacancies (NiSe2 PNSvac) are synthesized via plasma-assisted dry exfoliation for supercapacitor. The specific capacitance of the NiSe2 PNSvac is 466 F g(-1) in 1 M KOH electrolyte, which is much higher than those of NiSe2 ultrathin nanosheeets (328 F g(-1)) and NiSe2 particles (251 F g(-1)). After 1000 cycles, the specific capacitance of the NiSe2 PNSvac can be well-maintained, indicating its high cycling stability. The superior performance arose from its high conductivity, short electrolyte diffusion distance, and large specific surface area.

引用

页码：41861 / 41865

页数：5

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