Optimizing Hybridization of 1T and 2H Phases in MoS2 Monolayers to Improve Capacitances of Supercapacitors

被引：162

作者：

Jiang, Lianfu ^{[1
,2
,3
]}

Zhang, Shengli ^{[2
,3
]}

Kulinich, Sergei A. ^{[4
]}

Song, Xiufeng ^{[2
,3
]}

Zhu, Junwu ^{[5
]}

Wang, Xin ^{[5
]}

Zeng, Haibo ^{[1
,2
,3
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, State Key Lab Mech & Control Mech Struct, Nanjing 210016, Peoples R China

[2] Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, Inst Optoelect & Nanomat, Nanjing 210094, Jiangsu, Peoples R China

[3] Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, Herbert Gleiter Inst Nanosci, Nanjing 210094, Jiangsu, Peoples R China

[4] Tokai Univ, Inst Innovat Sci & Technol, Hiratsuka, Kanagawa 2591292, Japan

[5] Nanjing Univ Sci & Technol, Minist Educ, Key Lab Soft Chem & Funct Mat, Nanjing 210094, Jiangsu, Peoples R China

来源：

MATERIALS RESEARCH LETTERS | 2015年 / 3卷 / 04期

关键词：

MoS2; Monolayer; Metastable Phase; Hybridization; Supercapacitor; SINGLE-LAYER; ULTRATHIN NANOSHEETS; ELECTRODE MATERIAL; HYDROGEN; PERFORMANCE; STORAGE; ARRAYS; YIELD;

D O I：

10.1080/21663831.2015.1057654

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on a 100-fold capacitance increase in MoS2-based supercapacitors achieved via optimizing the in-plane 1T-2H phase hybridization of the monolayers. Chemically exfoliated MoS2 monolayers were annealed at low temperature to tune their 1T content from 2% to 60%. The obtained hybridization states were confirmed by X-ray photoelectron and Raman spectroscopies. After optimizing the hybridization degree, the electrode based on MoS2 monolayers with 40% of the 1T phase exhibited outstanding performance with a resistance as low as 0.68 k Omega sq(-1), specific capacitance of 366.9 F g(-1), and retention ratio of 92.2% after 1000 cycles at current densities of 0.5 A g(-1). [GRAPHICS] .

引用

页码：177 / 183

页数：7

共 33 条

[1] Nanostructured materials for advanced energy conversion and storage devices [J].