Controlled Synthesis of Cr‐Co 0.85 Se Nanoarrays for Water Splitting at an Ultralow Cell Voltage of 1.43 V

2020 ◽  
Vol 15 (7) ◽  
pp. 1110-1117
Author(s):  
Xiaoqiang Du ◽  
Jianpeng Fu ◽  
Xiaoshuang Zhang
Keyword(s):  
Water Splitting ◽  
Cell Voltage ◽  
Controlled Synthesis

Controlled synthesis of Ni(OH)2/Ni3S2hybrid nanosheet arrays as highly active and stable electrocatalysts for water splitting

2018 ◽  
Vol 6 (16) ◽  
pp. 6938-6946 ◽  
Author(s):  
Xiaoqiang Du ◽  
Zhi Yang ◽  
Yu Li ◽  
Yaqiong Gong ◽  
Min Zhao
Keyword(s):  
Water Splitting ◽  
Current Density ◽  
Cell Voltage ◽  
Controlled Synthesis ◽  
Highly Active ◽  
Nanosheet Arrays ◽  
A Current

Using Ni(OH)2/Ni3S2-12h as a bifunctional water splitting catalyst, with an overpotential of ∼340 mV, which is obtained at a very low cell voltage of 1.57 V with a current density of 10 mA cm−2in 1.0 M KOH.

scholarly journals Electrodeposition of Pt-Decorated Ni(OH)2/CeO2 Hybrid as Superior Bifunctional Electrocatalyst for Water Splitting

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Huanhuan Liu ◽  
Zhenhua Yan ◽  
Xiang Chen ◽  
Jinhan Li ◽  
Le Zhang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Cell Voltage ◽  
Water Electrolysis ◽  
Active Species ◽  
Water Dissociation ◽  
Electronic Interaction ◽  
Bifunctional Electrocatalyst ◽  
Highly Active ◽  
A Cell ◽  
Promising Application

The facile synthesis of highly active and stable bifunctional electrocatalysts to catalyze water splitting is attractive but challenging. Herein, we report the electrodeposition of Pt-decorated Ni(OH)2/CeO2 (PNC) hybrid as an efficient and robust bifunctional electrocatalyst. The graphite-supported PNC catalyst delivers superior hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) activities over the benchmark Pt/C and RuO2, respectively. For overall water electrolysis, the PNC hybrid only requires a cell voltage of 1.45 V at 10 mA cm−2 and sustains over 85 h at 1000 mA cm−2. The remarkable HER/OER performances are attributed to the superhydrophilicity and multiple effects of PNC, in which Ni(OH)2 and CeO2 accelerate HER on Pt due to promoted water dissociation and strong electronic interaction, while the electron-pulling Ce cations facilitate the generation of high-valence Ni OER-active species. These results suggest the promising application of PNC for H2 production from water electrolysis.

A self-supported amorphous Ni–P alloy on a CuO nanowire array: an efficient 3D electrode catalyst for water splitting in alkaline media

2018 ◽  
Vol 54 (19) ◽  
pp. 2393-2396 ◽  
Author(s):  
Bing Chang ◽  
Shuai Hao ◽  
Zhixiang Ye ◽  
Yingchun Yang
Keyword(s):  
Water Splitting ◽  
Nanowire Array ◽  
Cell Voltage ◽  
Alkaline Media ◽  
Core Shell ◽  
Alkaline Water ◽  
A Cell ◽  
Cuo Nanowire ◽  
A Current ◽  
3D Electrode

An amorphous Ni–P alloy shell electrodeposited on a CuO nanowire array to synergistically boost the catalytic activity toward alkaline water splitting is reported, and this core@shell CuO@Ni–P nanowire array is durable with a cell voltage of only 1.71 V reaching a current density of 30 mA cm−2 using a two-electrode configuration in an alkaline water electrolyzer.

Preparation and Characterization of Bipolar Membranes Modified by Adding Multi-Carboxylic Metallophthalocyanine Derivatives into the Cation Layer

2014 ◽  
Vol 936 ◽  
pp. 248-254
Author(s):  
Min Lu ◽  
Yan Yu Hu ◽  
Ri Yao Chen
Keyword(s):  
Water Splitting ◽  
Carboxymethyl Cellulose ◽  
Testing Machine ◽  
Cell Voltage ◽  
Exchange Capacity ◽  
Central Metal ◽  
Ion Exchange Capacity ◽  
Bipolar Membranes ◽  
Cation Layer

The multi-carboxylic metallophthalocyanine derivatives were added into carboxymethyl cellulose cation layer to prepare the modified carboxymethyl cellulose/chitosan bipolar membranes (CMC/CS BPMs), which were characterized using electric universal testing machine, contact angle measurer and so on. The results showed that the mechanical properties were increased after modification. Moreover, the ion exchange capacity, and the hydrophilicity of the modified CMC membrane dramatically rose. As the catalytic centers, the metallophthalocyanine derivatives sped up water splitting, decreased the membrane impedance and cell voltage. In comparison with the BPMs modified by mononuclear metallophthalocyanine derivatives, the catalytic ability for water splitting of the binuclear metallophthalocyanine derivatives (especially with different central metal ions) was enhanced. At the current density of 60 mA·cm-2, the cell voltage of the BPM modified by FeCoPc2(COOH)12 was only 5.3V.

Polyoxometalate precursors for precisely controlled synthesis of bimetallic sulfide heterostructure through nucleation-doping competition

Nanoscale ◽  
2018 ◽  
Vol 10 (18) ◽  
pp. 8404-8412 ◽  
Author(s):  
Yu-Jia Tang ◽  
A-Man Zhang ◽  
Hong-Jing Zhu ◽  
Long-Zhang Dong ◽  
Xiao-Li Wang ◽  
...  
Keyword(s):  
Water Splitting ◽  
Growth Mechanism ◽  
Controlled Synthesis ◽  
Bimetallic Sulfide

A series of bimetallic sulfides were synthesized using Anderson-type POMs to study the growth mechanism through the nucleation-doping competition as well as the water splitting performance.

Controlled synthesis of Co3O4@NiMoO4 core–shell nanorod arrays for efficient water splitting

2018 ◽  
Vol 47 (35) ◽  
pp. 12071-12074 ◽  
Author(s):  
Xiaoqiang Du ◽  
Nai Li ◽  
Xiaoshuang Zhang
Keyword(s):  
Water Splitting ◽  
Nickel Foam ◽  
Core Shell ◽  
Controlled Synthesis ◽  
Nanorod Arrays ◽  
Earth Abundant ◽  
First Time

We reported for the first time the development of Co3O4@NiMoO4 nanorod arrays on nickel foam (Co3O4@NiMoO4/NF) as a robust Earth-abundant electrocatalyst for water splitting.

Trimetallic NiFeMo for Overall Electrochemical Water Splitting with a Low Cell Voltage

2018 ◽  
Vol 3 (3) ◽  
pp. 546-554 ◽  
Author(s):  
Fan Qin ◽  
Zhenhuan Zhao ◽  
Md Kamrul Alam ◽  
Yizhou Ni ◽  
Francisco Robles-Hernandez ◽  
...  
Keyword(s):  
Water Splitting ◽  
Cell Voltage ◽  
Electrochemical Water Splitting

Nickel selenide from single-molecule electrodeposition for efficient electrocatalytic overall water splitting

2021 ◽  
Vol 45 (1) ◽  
pp. 351-357
Author(s):  
Dandan Chen ◽  
Yingdong Chen ◽  
Wei Zhang ◽  
Rui Cao
Keyword(s):  
Water Splitting ◽  
Alkaline Medium ◽  
Single Molecule ◽  
Cell Voltage ◽  
Superior Performance ◽  
Overall Water Splitting

The prepared electrode (NiSe-TMEDA/CC) from single-molecule electrodeposition is functional for both the OER and HER and shows a superior performance for overall water splitting with a low cell voltage in alkaline medium.

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