Charge Engineering of Mo2C@Defect-Rich N-Doped Carbon Nanosheets for Efficient Electrocatalytic H2 Evolution

被引：111

作者：

Lei, Chunsheng ^{[1
,2
]}

Zhou, Wen ^{[1
,2
]}

Feng, Qingguo ^{[3
,4
]}

Lei, Yongpeng ^{[1
,5
]}

Zhang, Yi ^{[5
]}

Chen, Yin ^{[5
]}

Qin, Jiaqian ^{[6
]}

机构：

[1] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

[2] Changzhou Univ, Coll Environm & Safety Engn, Changzhou 213164, Peoples R China

[3] Southwest Jiaotong Univ, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Sichuan, Peoples R China

[4] Southwest Jiaotong Univ, Inst Mat Dynam, Chengdu 610031, Sichuan, Peoples R China

[5] Cent South Univ, Coll Chem & Chem Engn, Hunan Prov Key Lab Chem Power Sources, Changsha 410083, Hunan, Peoples R China

[6] Chulalongkorn Univ, Met & Mat Sci Res Inst, Bangkok 10330, Thailand

来源：

NANO-MICRO LETTERS | 2019年 / 11卷 / 01期

关键词：

Molybdenum carbide; Nitrogen-doped carbon nanosheets; Charge engineering; Graphene wave; Hydrogen evolution reaction; INITIO MOLECULAR-DYNAMICS; HYDROGEN-EVOLUTION; MOLYBDENUM CARBIDE; TUNGSTEN CARBIDE; GRAPHENE; COMPOSITES; TRANSITION; NANOFIBERS; CATALYSTS; MO2C;

D O I：

10.1007/s40820-019-0279-8

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Charge engineering of carbon materials with many defects shows great potential in electrocatalysis, and molybdenum carbide (Mo2C) is one of the noble-metal-free electrocatalysts with the most potential. Herein, we study the Mo2C on pyridinic nitrogen-doped defective carbon sheets (MoNCs) as catalysts for the hydrogen evolution reaction. Theoretical calculations imply that the introduction of Mo2C produces a graphene wave structure, which in some senses behaves like N doping to form localized charges. Being an active electrocatalyst, MoNCs demonstrate a Tafel slope as low as 60.6 mV dec(-1) and high durability of up to 10 h in acidic media. Besides charge engineering, plentiful defects and hierarchical morphology also contribute to good performance. This work underlines the importance of charge engineering to boost catalytic performance.

引用

页数：10

共 56 条

[1] Engineering the surface charge states of nanostructures for enhanced catalytic performance [J].

Bai, Yu ;

Huang, Hao ;

Wang, Chengming ;

Long, Ran ;

Xiong, Yujie .

MATERIALS CHEMISTRY FRONTIERS, 2017, 1 (10) :1951-1964

[2] IMPROVED TETRAHEDRON METHOD FOR BRILLOUIN-ZONE INTEGRATIONS [J].

BLOCHL, PE ;

JEPSEN, O ;

ANDERSEN, OK .

PHYSICAL REVIEW B, 1994, 49 (23) :16223-16233

[3] Mo-Based Ultrasmall Nanoparticles on Hierarchical Carbon Nanosheets for Superior Lithium Ion Storage and Hydrogen Generation Catalysis [J].

Chen, Ling ;

Jiang, Hao ;

Jiang, Haibo ;

Zhang, Haoxuan ;

Guo, Shaojun ;

Hu, Yanjie ;

Li, Chunzhong .

ADVANCED ENERGY MATERIALS, 2017, 7 (15)

[4] Highly active and durable nanostructured molybdenum carbide electrocatalysts for hydrogen production [J].

Chen, W. -F. ;

Wang, C. -H. ;

Sasaki, K. ;

Marinkovic, N. ;

Xu, W. ;

Muckerman, J. T. ;

Zhu, Y. ;

Adzic, R. R. .

ENERGY & ENVIRONMENTAL SCIENCE, 2013, 6 (03) :943-951

[5] Recent developments in transition metal carbides and nitrides as hydrogen evolution electrocatalysts [J].

Chen, Wei-Fu ;

Muckerman, James T. ;

Fujita, Etsuko .

CHEMICAL COMMUNICATIONS, 2013, 49 (79) :8896-8909

[6] Pomegranate-like N,P-Doped Mo2C@C Nanospheres as Highly Active Electrocatalysts for Alkaline Hydrogen Evolution [J].

Chen, Yu-Yun ;

Zhang, Yun ;

Jiang, Wen-Jie ;

Zhang, Xing ;

Dai, Zhihui ;

Wan, Li-Jun ;

Hu, Jin-Song .

ACS NANO, 2016, 10 (09) :8851-8860

[7] N-doped defective carbon with trace Co for efficient rechargeable liquid electrolyte-/all-solid-state Zn-air batteries [J].

Chen, Zhiyan ;

Wang, Qichen ;

Zhang, Xiaobin ;

Lei, Yongpeng ;

Hu, Wei ;

Luo, Yao ;

Wang, Yaobing .

SCIENCE BULLETIN, 2018, 63 (09) :548-555

[8] In Situ Formation of Cobalt Nitrides/Graphitic Carbon Composites as Efficient Bifunctional Electrocatalysts for Overall Water Splitting [J].

Chen, Ziliang ;

Ha, Yuan ;

Liu, Yang ;

Wang, Hao ;

Yang, Hongyuan ;

Xu, Hongbin ;

Li, Yanjun ;

Wu, Renbing .

ACS APPLIED MATERIALS & INTERFACES, 2018, 10 (08) :7134-7144

[9] Effect of sulphur vacancy and interlayer interaction on the electronic structure and spin splitting of bilayer MoS2 [J].

Dong, Yulan ;

Zeng, Bowen ;

Xiao, Jin ;

Zhang, Xiaojiao ;

Li, Dongde ;

Li, Mingjun ;

He, Jun ;

Long, Mengqiu .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2018, 30 (12)

[10] Atomic and electronic structure of molybdenum carbide phases: bulk and low Miller-index surfaces [J].

dos Santos Politi, Jose Roberto ;

Vines, Francesc ;

Rodriguez, Jose A. ;

Illas, Francesc .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2013, 15 (30) :12617-12625

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