Combining Co3S4 and Ni:Co3S4 nanowires as efficient catalysts for overall water splitting: an experimental and theoretical study

Nanoscale ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 2202-2210 ◽  
Author(s):  
Shasha Tang ◽  
Xing Wang ◽  
Yongqi Zhang ◽  
Marc Courté ◽  
Hong Jin Fan ◽  
...  
Keyword(s):  
Water Splitting ◽  
Mass Production ◽  
Theoretical Study ◽  
Low Cost ◽  
Water Electrolysis ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Production Of Hydrogen

In the quest for mass production of hydrogen from water electrolysis, to develop highly efficient, stable and low-cost catalysts is still the central challenge.

Al-doped nickel sulfide nanosheet arrays as highly efficient bifunctional electrocatalysts for overall water splitting

Nanoscale ◽  
2020 ◽  
Vol 12 (47) ◽  
pp. 24244-24250
Author(s):  
Wenjun He ◽  
Fangqing Wang ◽  
Dongbo Jia ◽  
Ying Li ◽  
Limin Liang ◽  
...  
Keyword(s):  
High Activity ◽  
Water Splitting ◽  
Precious Metal ◽  
Nickel Sulfide ◽  
Low Cost ◽  
Water Electrolysis ◽  
Overall Water Splitting ◽  
Bifunctional Electrocatalysts ◽  
Nanosheet Arrays ◽  
Production Of Hydrogen

The development of low-cost, high-activity, durable non-precious metal bifunctional electrocatalysts is of great importance in the production of hydrogen by water electrolysis.

Constructing ultrathin CoP nanomeshes by Er-doping for highly efficient bifunctional electrocatalysts for overall water splitting

2019 ◽  
Vol 7 (10) ◽  
pp. 5769-5778 ◽  
Author(s):  
Gengwei Zhang ◽  
Bin Wang ◽  
Jinglei Bi ◽  
Dangqi Fang ◽  
Shengchun Yang
Keyword(s):  
Water Splitting ◽  
Noble Metal ◽  
Water Electrolysis ◽  
Commercial Production ◽  
Bifunctional Catalysts ◽  
Er Doping ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Bifunctional Electrocatalysts ◽  
Production Of Hydrogen

Exploring highly efficient non-noble-metal bifunctional catalysts for water electrolysis is vital for the commercial production of hydrogen.

scholarly journals Hydrogen production from water electrolysis: role of catalysts

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Shan Wang ◽  
Aolin Lu ◽  
Chuan-Jian Zhong
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Noble Metal ◽  
Active Sites ◽  
Current Knowledge ◽  
Low Cost ◽  
Critical Role ◽  
Water Electrolysis ◽  
Efficient Production ◽  
Production Of Hydrogen

AbstractAs a promising substitute for fossil fuels, hydrogen has emerged as a clean and renewable energy. A key challenge is the efficient production of hydrogen to meet the commercial-scale demand of hydrogen. Water splitting electrolysis is a promising pathway to achieve the efficient hydrogen production in terms of energy conversion and storage in which catalysis or electrocatalysis plays a critical role. The development of active, stable, and low-cost catalysts or electrocatalysts is an essential prerequisite for achieving the desired electrocatalytic hydrogen production from water splitting for practical use, which constitutes the central focus of this review. It will start with an introduction of the water splitting performance evaluation of various electrocatalysts in terms of activity, stability, and efficiency. This will be followed by outlining current knowledge on the two half-cell reactions, hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), in terms of reaction mechanisms in alkaline and acidic media. Recent advances in the design and preparation of nanostructured noble-metal and non-noble metal-based electrocatalysts will be discussed. New strategies and insights in exploring the synergistic structure, morphology, composition, and active sites of the nanostructured electrocatalysts for increasing the electrocatalytic activity and stability in HER and OER will be highlighted. Finally, future challenges and perspectives in the design of active and robust electrocatalysts for HER and OER towards efficient production of hydrogen from water splitting electrolysis will also be outlined.

scholarly journals Graphene/MoS2/FeCoNi(OH)x and Graphene/MoS2/FeCoNiPx multilayer-stacked vertical nanosheets on carbon fibers for highly efficient overall water splitting

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xixi Ji ◽  
Yanhong Lin ◽  
Jie Zeng ◽  
Zhonghua Ren ◽  
Zijia Lin ◽  
...  
Keyword(s):  
Water Splitting ◽  
Carbon Fibers ◽  
Graphene Nanosheets ◽  
Water Electrolysis ◽  
Hybrid Structure ◽  
Hydrogen Energy ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Stable Oxygen ◽  
Excellent Stability

AbstractDevelopment of excellent and cheap electrocatalysts for water electrolysis is of great significance for application of hydrogen energy. Here, we show a highly efficient and stable oxygen evolution reaction (OER) catalyst with multilayer-stacked hybrid structure, in which vertical graphene nanosheets (VGSs), MoS2 nanosheets, and layered FeCoNi hydroxides (FeCoNi(OH)x) are successively grown on carbon fibers (CF/VGSs/MoS2/FeCoNi(OH)x). The catalyst exhibits excellent OER performance with a low overpotential of 225 and 241 mV to attain 500 and 1000 mA cm−2 and small Tafel slope of 29.2 mV dec−1. Theoretical calculation indicates that compositing of FeCoNi(OH)x with MoS2 could generate favorable electronic structure and decrease the OER overpotential, promoting the electrocatalytic activity. An alkaline water electrolyzer is established using CF/VGSs/MoS2/FeCoNi(OH)x anode for overall water splitting, which generates a current density of 100 mA cm−2 at 1.59 V with excellent stability over 100 h. Our highly efficient catalysts have great prospect for water electrolysis.

Atomic Heterointerface Engineering Breaks Activity Limitation of Electrocatalysts and Promises Highly-Efficient Alkaline Water Splitting

2021 ◽  
Author(s):  
Qiucheng Xu ◽  
Jiahao Zhang ◽  
Haoxuan Zhang ◽  
Liyue Zhang ◽  
Ling Chen ◽  
...  
Keyword(s):  
Water Splitting ◽  
Anion Exchange ◽  
Low Cost ◽  
Water Electrolysis ◽  
Anion Exchange Membrane ◽  
Alkaline Water Electrolysis ◽  
Green Electricity ◽  
Alkaline Water ◽  
Highly Efficient ◽  
Exchange Membrane

Alkaline water splitting, especially the anion-exchange-membrane based water electrolysis, is an attractive way for low-cost and scalable H2 production. Green electricity-driven alkaline water electrolysis is requested to develop highly-efficient electrocatalysts...

Electrodeposition of Ni3Se2/MoSex as a bifunctional electrocatalyst towards highly-efficient overall water splitting

Nanoscale ◽  
2020 ◽  
Vol 12 (45) ◽  
pp. 23125-23133
Author(s):  
Yifan Tian ◽  
Xinying Xue ◽  
Yu Gu ◽  
Zhaoxi Yang ◽  
Guo Hong ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Water Splitting ◽  
Significant Role ◽  
High Efficiency ◽  
Low Cost ◽  
Hydrogen Energy ◽  
Bifunctional Electrocatalyst ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Splitting Water

Electrochemically splitting water into hydrogen and oxygen plays a significant role in the commercialization of hydrogen energy as well as fuel cells, but it remains a challenge to design and fabricate low-cost and high-efficiency electrocatalysts.

Self-supported nickel–cobalt nanowires as highly efficient and stable electrocatalysts for overall water splitting

Nanoscale ◽  
2018 ◽  
Vol 10 (39) ◽  
pp. 18767-18773 ◽  
Author(s):  
Hui Xu ◽  
Jingjing Wei ◽  
Min Zhang ◽  
Jin Wang ◽  
Yukihide Shiraishi ◽  
...  
Keyword(s):  
Water Splitting ◽  
Low Voltage ◽  
Water Electrolysis ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Highly Active ◽  
Cobalt Nanowires ◽  
Nickel Cobalt

The Ni1Co1O2 NWs//Ni1Co1P NWs couple is highly active and stable for overall water electrolysis with a low voltage of 1.58 V at 10 mA cm−2, showing extraordinary promise for practical overall water splitting electrolysis.

scholarly journals A Co-MOF-derived flower-like CoS@S,N-doped carbon matrix for highly efficient overall water splitting

RSC Advances ◽  
2021 ◽  
Vol 11 (27) ◽  
pp. 16823-16833
Author(s):  
Akerke Bereketova ◽  
Muthuchamy Nallal ◽  
Mohammad Yusuf ◽  
Sanha Jang ◽  
Karthick Selvam ◽  
...  
Keyword(s):  
Water Splitting ◽  
Noble Metal ◽  
Low Cost ◽  
Carbon Matrix ◽  
Pt Catalysts ◽  
Highly Efficient ◽  
Overall Water Splitting ◽  
Highly Effective

In this study, we constructed a highly effective, low-cost, non-noble-metal-based electrocatalyst to replace Pt catalysts, with a CoS@SNC catalyst being successfully synthesized.

scholarly journals Sea coral-like NiCo2O4@(Ni, Co)OOH heterojunctions for enhancing overall water-splitting

2018 ◽  
Vol 8 (16) ◽  
pp. 4151-4158 ◽  
Author(s):  
Leiming Tao ◽  
Man Li ◽  
Shaohang Wu ◽  
Qinglong Wang ◽  
Xin Xiao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Current Density ◽  
High Current Density ◽  
Low Cost ◽  
Water Electrolysis ◽  
Industrial Water ◽  
High Current ◽  
Overall Water Splitting

Efficient and low-cost sea coral-like NiCo2O4@(Ni, Co)OOH heterojunction catalysts meet the high current density requirements for industrial water electrolysis applications.

Ultra-thin NiFeSe nanosheets as a highly efficient bifunctional electrocatalyst for overall water splitting

2020 ◽  
Vol 4 (2) ◽  
pp. 582-588 ◽  
Author(s):  
Yu-Yang Sun ◽  
Mei-Yan Jiang ◽  
Lian-Kui Wu ◽  
Guang-Ya Hou ◽  
Yi-Ping Tang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Low Cost ◽  
Good Stability ◽  
Excellent Performance ◽  
Bifunctional Electrocatalyst ◽  
Highly Efficient ◽  
Overall Water Splitting

Developing a bifunctional electrocatalyst with a facile method, low cost, excellent performance and good stability for overall water splitting is essential for the wide application of hydrogen production.

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