Size Effects of MoS2 on Hydrogen and Oxygen Evolution Reaction

被引：13

作者：

Ghanashyam, Gyawali ^{[1
]}

Jeong, Hae Kyung ^{[1
,2
]}

机构：

[1] Daegu Univ, Inst Nat Sci, Dept Phys, Gyongsan 712714, South Korea

[2] Daegu Univ, Dept Mat Energy Sci & Engn, Inst Ind & Tech, Gyongsan 712714, South Korea

来源：

JOURNAL OF ELECTROCHEMICAL SCIENCE AND TECHNOLOGY | 2022年 / 13卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

Molybdenum Disulfide; Hydrogen Evolution Reaction; Oxygen Evolution Reaction; NI FOAM; CARBON; PERFORMANCE; ELECTRODES; COMPOSITE;

D O I：

10.33961/jecst.2021.00710

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Molybdenum disulfide (MoS2) has been widely used as a catalyst for the bifunctional activities of hydrogen and oxygen evolution reactions (HER and OER). Here, we investigated size dependent HER and OER performance of MoS2. The smallest size (90 nm) of MoS2 exhibits the lowest overpotential of -0.28 V at -10 mAcm(-2) and 1.52 V at 300 mAcm(-2) with the smallest Tafel slopes of 151 and 176 mVdec(-1) for HER and OER, respectively, compared to bigger sizes (2 mu m and 6 mu m) of MoS2. The better HER and OER performance is attributed to high electrochemical active surface area (6 x 10(-4) cm(2)) with edge sites and low charge transfer resistance (18.1 Omega), confirming that the smaller MoS2 nanosheets have the better catalytic behavior.

引用

页码：120 / 127

页数：8

共 28 条

[1] Modification of β-cyclodextrin-carbon nanotube-thermally reduced graphite oxide by using ambient plasma for electrochemical sensing of ascorbic acid [J].

Aryal, Krishna Prasad ;

Jeong, Hae Kyung .

CHEMICAL PHYSICS LETTERS, 2019, 730 :306-311

[2] One-step co-electrodeposition of hierarchical radial NixP nanospheres on Ni foam as highly active flexible electrodes for hydrogen evolution reaction and supercapacitor [J].

Cao, Xueying ;

Jia, Dedong ;

Li, Da ;

Cui, Liang ;

Liu, Jingquan .

CHEMICAL ENGINEERING JOURNAL, 2018, 348 :310-318

[3] Cotton fabric derived hierarchically porous carbon and nitrogen doping for sustainable capacitor electrode [J].

Chen, Long ;

Ji, Tuo ;

Mu, Liwen ;

Zhu, Jiahua .

CARBON, 2017, 111 :839-848

[4] A multicore-shell architecture with a phase-selective (α plus δ)MnO2 shell for an aqueous-KOH-based supercapacitor with high operating potential [J].

Dahal, Bipeen ;

Mukhiya, Tanka ;

Ojha, Gunendra Prasad ;

Chhetri, Kisan ;

Tiwari, Arjun Prasad ;

Muthurasu, Alagan ;

Lee, Minju ;

Chae, Su-Hyeong ;

Kim, Taewoo ;

Chung, Dong Chul ;

Kim, Hak Yong .

CHEMICAL ENGINEERING JOURNAL, 2020, 387

[5] Synthesis of nitrogen-doped plasma treated carbon nanofiber as an efficient electrode for symmetric supercapacitor [J].

Ghanashyam, Gyawali ;

Jeong, Hae Kyung .

JOURNAL OF ENERGY STORAGE, 2021, 33

[6] Plasma Treated Nitrogen-doped Graphite Oxide by using Melamine for Supercapacitor Applications [J].

Ghanashyam, Gyawali ;

Jeong, Hae Kyung .

JOURNAL OF ENERGY STORAGE, 2020, 30

[7] Synthesis of plasma treated nitrogen-doped graphite oxide for supercapacitor applications [J].

Ghanashyam, Gyawali ;

Jeong, Hae Kyung .

JOURNAL OF ENERGY STORAGE, 2019, 26

[8] Size effects and odd-even effects in MoS2 nanosheets: first-principles studies [J].

Joo, Paul H. ;

Cheng, Jianli ;

Yang, Kesong .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2017, 19 (44) :29927-29933

[9]

Li BB, 2017, SCI REP-UK, V7, DOI [10.1038/srep43082, 10.1038/s41598-017-10409-8]

[10] CoS2 nanodots anchored into heteroatom-doped carbon layer via a biomimetic strategy: Boosting the oxygen evolution and supercapacitor performance [J].

Li, Bingyue ;

Xing, Ruimin ;

Mohite, Santosh V. ;

Latthe, Sanjay S. ;

Fujishima, Akira ;

Liu, Shanhu ;

Zhou, Yanmei .

JOURNAL OF POWER SOURCES, 2019, 436

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