scholarly journals Single-Entity Electrocatalysis at Electrode Ensembles Prepared by Template Synthesis

2021 ◽  
Author(s):  
Natasha P Siepser ◽  
Myung-Hoon Choi ◽  
Sasha E Alden ◽  
Lane A Baker
Keyword(s):  
Hydrogen Evolution ◽  
Template Synthesis ◽  
Electrocatalytic Activity ◽  
Electrochemical Cell ◽  
Proof Of Concept ◽  
Membrane Pores ◽  
Catalytic Nanoparticles ◽  
Initial Membrane ◽  
Conductive Membrane ◽  
Cell Microscopy

Abstract Nanoelectrode ensembles (NEEs), prepared by Au template synthesis, are presented as a proof-of-concept sample platform to study individual electrodeposited materials by scanning electrochemical cell microscopy (SECCM). With this platform, the non-conductive membrane support does not contribute to the electrocatalytic activity recorded at each electrode. Use of low-density template membranes results in electrodes that are isolated because initial membrane pores are typically separated by significant (microscale) distances. Electrodeposition of catalytic nanoparticles onto the electrodes of the array and observation of electrocatalytic activity are demonstrated to be suitable for correlative SECCM voltammetric mapping and electron microscopy. Suitability of NEEs for studies of surface Au oxidation, hydrazine oxidation, and hydrogen evolution (hydrogen evolution reaction, HER), and at Pt particles on NEEs (Pt-NEEs) for HER is demonstrated.

scholarly journals Metal support effects in electrocatalysis at hexagonal boron nitride

2019 ◽  
Vol 55 (5) ◽  
pp. 628-631 ◽  
Author(s):  
Dan-Qing Liu ◽  
Binglin Tao ◽  
Hong-Cheng Ruan ◽  
Cameron L. Bentley ◽  
Patrick R. Unwin
Keyword(s):  
Boron Nitride ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrochemical Cell ◽  
Hexagonal Boron Nitride ◽  
Support Effects ◽  
Boron Nitride Nanosheets ◽  
Metal Support ◽  
Cell Microscopy

The metal support of hexagonal boron nitride nanosheets has a significant effect on the electrocatalytic hydrogen evolution reaction, as visualized by scanning electrochemical cell microscopy.

A crystalline–amorphous Ni–Ni(OH)2 core–shell catalyst for the alkaline hydrogen evolution reaction

2020 ◽  
Vol 8 (44) ◽  
pp. 23323-23329
Author(s):  
Jing Hu ◽  
Siwei Li ◽  
Yuzhi Li ◽  
Jing Wang ◽  
Yunchen Du ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Core Shell ◽  
Alkaline Conditions

Crystalline–amorphous Ni–Ni(OH)2 core–shell assembled nanosheets exhibit outstanding electrocatalytic activity and stability for hydrogen evolution under alkaline conditions.

Hierarchically porous FeNi3@FeNi layered double hydroxide nanostructures: One-step fast electrodeposition and highly efficient electrocatalytic performances for overall water splitting

2021 ◽  
Author(s):  
Zihao Liu ◽  
Shifeng Li ◽  
Fangfang Wang ◽  
Mingxia Li ◽  
Yonghong Ni
Keyword(s):  
Hydrogen Evolution ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Layered Double Hydroxide ◽  
Hydrogen Evolution Reaction ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Hierarchically Porous ◽  
One Step ◽  
Double Hydroxide

FeNi-layered double hydroxide (LDH) is thought to be an excellent electrocatalyst for oxygen evolution reaction (OER), but it always shows extremely poor electrocatalytic activity toward hydrogen evolution reaction (HER) in...

scholarly journals MoSe2-Ni3Se4 Hybrid Nanoelectrocatalysts and Their Enhanced Electrocatalytic Activity for Hydrogen Evolution Reaction

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Pengyuan Wu ◽  
Gangyong Sun ◽  
Yuanzhi Chen ◽  
Wanjie Xu ◽  
Hongfei Zheng ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity

Water‐Induced Formation of Ni 2 P–Ni 12 P 5 Interfaces with Superior Electrocatalytic Activity toward Hydrogen Evolution Reaction

Small ◽  
2021 ◽  
Vol 17 (6) ◽  
pp. 2006770
Author(s):  
Zhongke Wang ◽  
Shengyan Wang ◽  
Lixia Ma ◽  
Yingjie Guo ◽  
Jie Sun ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Electrocatalytic Activity

An efficient CoS2/CoSe2 hybrid catalyst for electrocatalytic hydrogen evolution

2017 ◽  
Vol 5 (6) ◽  
pp. 2504-2507 ◽  
Author(s):  
Yaxiao Guo ◽  
Changshuai Shang ◽  
Erkang Wang
Keyword(s):  
Hydrogen Evolution ◽  
Electrocatalytic Activity ◽  
Active Sites ◽  
High Dispersion ◽  
Hybrid Catalyst

The CoS2/CoSe2 hybrid catalyst exhibits superior HER electrocatalytic activity as well as excellent electrochemical durability. CoSe2/DETA nanobelts not only afford an interconnected conducting network, but also demonstrate superior HER electrocatalytic activity. High dispersion and smaller CoS2 nanoparticles on the surface can provide abundant active sites for the HER.

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