Three-dimensional N-doped, plasma-etched graphene: Highly active metal-free catalyst for hydrogen evolution reaction

To find an effective alternative to scarce, high-cost noble platinum (Pt) electrocatalyst for hydrogen evolution reaction (HER), researchers are pursuing inexpensive and highly efficient materials as an electrocatalyst for large scale practical application. Layered transition metal dichalcogenides (TMDCs) are promising candidates for durable HER catalysts due to their cost-effective, highly active edges and Earth-abundant elements to replace Pt electrocatalysts. Herein, we design an active, stable earth-abundant TMDCs based catalyst, WS(1−x)Sex nanoparticles-decorated onto a 3D porous graphene/Ni foam. The WS(1−x)Sex/graphene/NF catalyst exhibits fast hydrogen evolution kinetics with a moderate overpotential of ~−93 mV to drive a current density of 10 mA cm−2, a small Tafel slope of ~51 mV dec−1, and a long cycling lifespan more than 20 h in 0.5 M sulfuric acid, which is much better than WS2/NF and WS2/graphene/NF catalysts. Our outcomes enabled a way to utilize the TMDCs decorated graphene and precious-metal-free electrocatalyst as mechanically robust and electrically conductive catalyst materials.

Download Full-text

Amorphous Molybdenum Sulfide on Three-Dimensional Hierarchical Hollow Microspheres Comprising Bamboo-like N-Doped Carbon Nanotubes as a Highly Active Hydrogen Evolution Reaction Catalyst

ACS Sustainable Chemistry & Engineering ◽

10.1021/acssuschemeng.8b01843 ◽

2018 ◽

Vol 6 (10) ◽

pp. 12706-12715 ◽

Cited By ~ 9

Author(s):

Seung-Keun Park ◽

Jin Koo Kim ◽

Yun Chan Kang

Keyword(s):

Carbon Nanotubes ◽

Hydrogen Evolution ◽

Hydrogen Evolution Reaction ◽

Three Dimensional ◽

Molybdenum Sulfide ◽

Hollow Microspheres ◽

Active Hydrogen ◽

Highly Active

Download Full-text

Facile Synthesis of CoSe2 Nanoparticles and their Electrocatalytic Performance for Hydrogen Evolution Reaction

Materials Science Forum ◽

10.4028/www.scientific.net/msf.852.916 ◽

2016 ◽

Vol 852 ◽

pp. 916-920 ◽

Cited By ~ 1

Author(s):

Hong Xue Qi ◽

Yuan Qiang Song ◽

Zhong Ping Liu ◽

Lan Xiang Ji ◽

Jian Guo Deng

Keyword(s):

Hydrogen Evolution ◽

Hydrogen Evolution Reaction ◽

Energy Efficient ◽

Average Diameter ◽

Facile Synthesis ◽

One Pot ◽

Metal Free ◽

Highly Active ◽

Electrocatalytic Performance ◽

Free Hydrogen

For more energy-efficient and economical hydrogen production, highly active noble metal-free hydrogen evolution catalysts are a priority for all. Herein, we report a facile one-pot hydrothermal synthesis of CoSe2 nanoparticles with their electrocatalytic performance for hydrogen evolution reaction. The synthesized CoSe2 nanoparticles have an average diameter of 50-70 nm with a uniform distribution. They also exhibited good electrocatalytic performance for hydrogen evolution reaction with the onset overpotential and Tafel slope of 140 mV and 95 mV/dec, respectively. The results provide a facile and effective way for the exploration of efficient Co-based HER catalysts.

Download Full-text

Functionalized Carbon Nanotubes for Highly Active and Metal-Free Electrocatalysts in Hydrogen Evolution Reaction

Electrocatalysis ◽

10.1007/s12678-017-0452-0 ◽

2018 ◽

Vol 9 (5) ◽

pp. 573-581 ◽

Cited By ~ 8

Author(s):

Tianhao Li ◽

Daomei Tang ◽

Zehua Cui ◽

Bo Cai ◽

Dalin Li ◽

...

Keyword(s):

Carbon Nanotubes ◽

Hydrogen Evolution ◽

Hydrogen Evolution Reaction ◽

Functionalized Carbon Nanotubes ◽

Metal Free ◽

Highly Active

Download Full-text

Bottom-up synthesis of fully sp2 hybridized three-dimensional microporous graphitic frameworks as metal-free catalysts

Journal of Materials Chemistry A ◽

10.1039/c7ta02733h ◽

2017 ◽

Vol 5 (24) ◽

pp. 12080-12085 ◽

Cited By ~ 23

Author(s):

Siddulu Naidu Talapaneni ◽

Jaehoon Kim ◽

Sang Hyun Je ◽

Onur Buyukcakir ◽

Jihun Oh ◽

...

Keyword(s):

Hydrogen Evolution ◽

Hydrogen Evolution Reaction ◽

Three Dimensional ◽

Bottom Up ◽

Metal Free ◽

The Third ◽

Template Free ◽

Third Dimension

We demonstrated template-free inclusion of the third dimension into the graphitic frameworks while retaining π-conjugation and conductivity, which was verified by their activity as metal-free electrocatalysts for the hydrogen evolution reaction.

Download Full-text