Large-scale production of a low-cost molybdenum dioxide–phosphide seamless electrode for high-current-density hydrogen evolution

Jian, Chuanyong; Cai, Qian; Hong, Wenting; Liu, Wei

doi:10.1039/d1ta10678c

Cited by 10 publications

(13 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Notably, Co 0.59 Ni 0.41 C 2 O 4 @PANI/NF also has advanced catalytic activity at high‐current‐density of −1000 mA cm −2 (Figure 3g; Tables S5, and S6, Supporting Information). [ 43,45–60 ]…”

Section: Resultsmentioning

confidence: 99%

Inheritable Organic‐Inorganic Hybrid Interfaces with π–d Electron Coupling for Robust Electrocatalytic Hydrogen Evolution at High‐Current‐Densities

Zhao

Yin

Deng

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

Rational heterointerface engineering is crucial for superior and robust hydrogen evolution reaction (HER). Herein, a delicate organic-inorganic hybrid heterojunction based on the assembly of oxalate with polyaniline (PANI) for HER at high-current-densities is envisioned. Strong π-d electron coupling is achieved between the delocalized π electrons of PANI and the localized d electrons of oxalate metal sites. The CoC 2 O 4 nanosheets are grown on nickel foam (NF) with Ni 2+ ions substitution by the precursor etching. By virtue of the synergy of hetero ions and π-d electron coupling, metal sites obtain sufficient exposure and electronic structure optimization. Surprisingly, the phase transition of oxalate during HER in the alkaline environment does not weaken the π-d electronic coupling of the organicinorganic hybrid interfaces. Inheritable interfacial electron interaction provides a reliable guarantee for robust stability at high-current-densities while endowing the hybrid materials with extremely low overpotentials. As expected, post-phase reconstructed Co 0.59 Ni 0.41 (OH) 2 @PANI/NF displays impressive HER activity, with a low overpotential of 43 mV@−10 mA cm −2 and robust stability at −1000 mA cm −2 for 30 h in the alkaline environment. This study sheds light on the rational heterostructure interface design and promotes the architecture of an impressive electrocatalysts system.

show abstract

Section: Resultsmentioning

confidence: 99%

Inheritable Organic‐Inorganic Hybrid Interfaces with π–d Electron Coupling for Robust Electrocatalytic Hydrogen Evolution at High‐Current‐Densities

Zhao

Yin

Deng

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…Subsequently, they also successfully constructed a molybdenum oxide-phosphide (MoO 2 -MoP) seamless electrode on Mo substrate using the same method. 274 The MoO 2 -MoP mesh electrode achieved an industrial current density of 800 mA cm À2 at a low overpotential of 362 mV and showed excellent stability at high current densities for 200 h in an alkaline electrolyte. Additionally, it yielded a current density of 1000 mA cm À2 at 293 mV in 1.0 M KOH solution, but required an overpotential of only 215 mV to reach the same current density in 5.0 M KOH solution, which was practical for industrial alkaline HER.…”

Section: Molybdenum-based Substratesmentioning

confidence: 95%

Self-supported electrocatalysts for the hydrogen evolution reaction

Zhang

Shen

et al. 2023

Mater. Chem. Front.

View full text Add to dashboard Cite

show abstract

Section: The Primary Demands For Designing Electrocatalysts For Indus...mentioning

confidence: 99%

Recent Development of Self‐Supported Alkaline Hydrogen Evolution Reaction Electrocatalysts for Industrial Electrolyzer

Cai

Hong

Jian

et al. 2023

Adv Energy and Sustain Res

Self Cite

View full text Add to dashboard Cite

With the increasing environmental contamination and energy crisis caused by the excessive use of fossil fuels, it is imperative to explore clean and sustainable energy sources. As a renewable and sustainable energy carrier, hydrogen (H 2 ) has been considered a versatile alternative to meet future global energy demands due to its high energy density, zero pollution, and carbon neutrality. [1] Moreover, hydrogen is an important feedstock for fertilizer production, petroleum refining, and hydrogenation. [2] The large-scale production of hydrogen fuel from water electrolysis technology has been widely used in the chlor-alkali industry and industrial hydrogen production. [3] Water electrolysis consists of two half reactions: the anodic oxygen evolution reaction (OER) and the cathodic hydrogen evolution reaction (HER). Unfortunately, commercially available highly efficient catalysts are noble metal Pt-and Ir/Ru-based catalysts for HER and OER. Besides, the large overpotential caused by the sluggish kinetics (especially for OER) will lead to high electricity consumption. Hence, this technology accounts for only 4% of current hydrogen production, which is still far from being economically competitive with other technologies, such as steam methane reforming and natural fossil fuels. [4] For industrial HER, it is critical to develop electrocatalysts with high performance under industrially relevant conditions, including large current density, durable operating time, and demanded pressure and temperature. Large current density signifies a high hydrogen production rate, which can reduce capital costs and lead to profitable hydrogen production. In this respect, different technical objectives for large current density water electrolysis have been proposed by many organizations for different applications. The Fuel Cells and Hydrogen Joint Undertaking in Europe (FCH JU) proposes that the current density should reach up to 800 mA cm À2 for alkaline water electrolysis and 2500 mA cm À2 for proton exchange membrane (PEM) water electrolysis in 2030. [5] Moreover, the current density requirement for PEM water electrolysis should reach 1500 mA cm À2 at cell voltage of 1.75 V in 2015 and will reach 1600 mA cm À2 at 1.

show abstract

Large-scale production of a low-cost molybdenum dioxide–phosphide seamless electrode for high-current-density hydrogen evolution

Abstract: Herein, we report the large-scale production of a molybdenum oxide-phosphide (MoO2-MoP) seamless electrode (SE) that is vertically grown on cheap industrial-grade molybdenum substrates (e.g. molybdenum plate, molybdenum mesh, or molybdenum...

Cited by 10 publications

References 25 publications

Inheritable Organic‐Inorganic Hybrid Interfaces with π–d Electron Coupling for Robust Electrocatalytic Hydrogen Evolution at High‐Current‐Densities

Inheritable Organic‐Inorganic Hybrid Interfaces with π–d Electron Coupling for Robust Electrocatalytic Hydrogen Evolution at High‐Current‐Densities

Self-supported electrocatalysts for the hydrogen evolution reaction

Recent Development of Self‐Supported Alkaline Hydrogen Evolution Reaction Electrocatalysts for Industrial Electrolyzer

Contact Info

Product

Resources

About