Surface Tuning to Promote the Electrocatalysis for Oxygen Evolution Reaction: From Metal-Free to Cobalt-Based Carbon Electrocatalysts

2020 ◽  
Author(s):  
Yanan Wang ◽  
Shuguang Zhang ◽  
Xiuxia Meng ◽  
Ting Wang ◽  
Yu Feng ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Metal Free

Cathodic Corrosion Activated Fe-based Nanoglass as Highly-Active and -Stable Oxygen Evolution Catalyst for Water Splitting

2021 ◽  
Author(s):  
Kaiyao Wu ◽  
Fei Chu ◽  
Yuying Meng ◽  
Kaveh Edalati ◽  
Qingsheng Gao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Amorphous Alloys ◽  
Precious Metal ◽  
Active Sites ◽  
Metal Free ◽  
Highly Active ◽  
Stable Oxygen ◽  
Surface Active

Transition metal-based amorphous alloys have attracted increasing attention as precious-metal-free electrocatalysts for oxygen evolution reaction (OER) of water splitting due to their high macro-conductivity and abundant surface active sites. However,...

Synergistic modulation of the metal-free photocatalysts by composition ratio change and heteroatom doping for overall water splitting

2021 ◽  
Author(s):  
Jianxiong Tian ◽  
Zhaobo Zhou ◽  
Sheng Zhang ◽  
Zhixia Li ◽  
Li Shi ◽  
...  
Keyword(s):  
Water Splitting ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Carbon Nitride ◽  
Reaction Rate ◽  
Graphitic Carbon Nitride ◽  
Heteroatom Doping ◽  
Metal Free ◽  
Ratio Change ◽  
Synergistic Modulation

The graphitic carbon nitride (g-C3N4) based metal-free photocatalyts have attracted growing attention in recent years, while the efficiency is largely limited by the slow reaction rate of oxygen evolution reaction...

Visible–Near-Infrared-Light-Driven Oxygen Evolution Reaction with Noble-Metal-Free WO2–WO3 Hybrid Nanorods

Langmuir ◽  
2016 ◽  
Vol 32 (49) ◽  
pp. 13046-13053 ◽  
Author(s):  
Song Ling Wang ◽  
Yan Lin Mak ◽  
Shijie Wang ◽  
Jianwei Chai ◽  
Feng Pan ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction ◽  
Near Infrared ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Metal Free

scholarly journals A Thiadiazole-Based Covalent Organic Framework: A Metal-Free Electrocatalyst toward Oxygen Evolution Reaction

ACS Catalysis ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 5623-5630 ◽  
Author(s):  
Sujan Mondal ◽  
Bishnupad Mohanty ◽  
Maryam Nurhuda ◽  
Sasanka Dalapati ◽  
Rajkumar Jana ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Metal Free ◽  
Covalent Organic Framework ◽  
Organic Framework

High‐Performance Metal‐Free Nanosheets Array Electrocatalyst for Oxygen Evolution Reaction in Acid

2020 ◽  
Vol 30 (31) ◽  
pp. 2003000 ◽  
Author(s):  
Chaojun Lei ◽  
Qiang Zheng ◽  
Fanpeng Cheng ◽  
Yang Hou ◽  
Bin Yang ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Metal Free

Noble Metal-Free Nanoporous High-Entropy Alloys as Highly Efficient Electrocatalysts for Oxygen Evolution Reaction

2019 ◽  
Vol 1 (5) ◽  
pp. 526-533 ◽  
Author(s):  
Hua-Jun Qiu ◽  
Gang Fang ◽  
Jiaojiao Gao ◽  
Yuren Wen ◽  
Juan Lv ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Noble Metal ◽  
Oxygen Evolution Reaction ◽  
High Entropy Alloys ◽  
High Entropy ◽  
Metal Free ◽  
Highly Efficient

Electronic structure modulation of metal-free graphdiyne for acidic oxygen evolution reaction

2D Materials ◽  
2021 ◽  
Author(s):  
Zhiqiang Zheng ◽  
Yurui Xue ◽  
Yaqi Gao ◽  
Zhongqiang Wang ◽  
Shuya Zhao ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Performance ◽  
Carbon Materials ◽  
Metal Free ◽  
Catalytic Activities ◽  
Structure Modulation ◽  
Flexible Metal ◽  
Kinetics Of

Abstract Developing high-performance metal-free electrocatalysts for acidic oxygen evolution reaction (AOER) is highly desirable but remains great challenge. Here we report a rationally substituting sp-C strategy for the synthesis of methyl- and hydrogen-substituted graphdiyne (MGDY, HGDY) nanowires arrays as 3D porous flexible metal-free electrodes for AOER. Methyl group in MGDY with stronger electron-pushing effect makes electrons around the acetylenic carbon atoms more delocalized, resulting in more uneven distributed surface charge, and higher intrinsic catalytic activities for AOER than HGDY, with the smaller overpotential of 406 mV at 10 mA cm−2 than HGDY and previously reported metal-free electrocatalysts. Our results reveal that the modulation of the electronic structure of GDY by selectively substituting sp-C allows for facilitating charge transfer kinetics, improving adsorption of reaction intermediate, and thereby accelerating the sluggish kinetics of AOER. This work provides us an ideal opportunity for studying the exact HER/OER mechanisms of metal-free carbon materials.

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