Transition metal-based catalysts for electrochemical water splitting at high current density: current status and perspectives

Nanoscale, Journal Year: 2021, Volume and Issue: 13(30), P. 12788 - 12817

Published: Jan. 1, 2021

Current popular transition metal-based electrocatalysts developed for HER/OER in water splitting at high current density are critically reviewed and discussed.

Language: Английский

---

S‐Doping Triggers Redox Reactivities of Both Iron and Lattice Oxygen in FeOOH for Low‐Cost and High‐Performance Water Oxidation

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(26)

Published: March 23, 2022

Abstract Developing low‐cost and highly efficient earth‐abundant oxygen evolution reaction (OER) electrocatalysts via an energy‐ time‐saving method is of great significance to the generation H 2 from electrochemical water splitting, which desirable but still challenging. Herein, a one‐step route in situ grow S‐doped FeOOH vertical nanosheets on iron foam (IF) 20 min under room temperature shown. This facile ultrafast effectively modifies surface IF into layer, full‐Fe electrode (S‐FeOOH/IF) achieved. Systematic experiments characterizations demonstrate that redox reactivities for both lattice are sufficiently activated, leading dramatically improved intrinsic OER activity. The as‐obtained S‐FeOOH/IF exhibits fascinating performance with low overpotential 244 at 10 mA cm −2 . work affords engineering strategy drive commercial cost‐efficient robust oxidation, has important implications clean production through low‐carbon environmentally friendly route.

Language: Английский

---

Highly Efficient and Stable Saline Water Electrolysis Enabled by Self‐Supported Nickel‐Iron Phosphosulfide Nanotubes With Heterointerfaces and Under‐Coordinated Metal Active Sites

Advanced Functional Materials, Journal Year: 2022, Volume and Issue: 32(38)

Published: July 13, 2022

Abstract Direct seawater electrolysis is proposed as a potential low‐cost approach to green hydrogen production, taking advantage of the vastly available and large‐scale offshore renewable energy being deployed. However, developing efficient, earth‐abundant electrocatalysts that can survive under harsh corrosive conditions for long time still significant technical challenge. Herein, fabrication self‐supported nickel‐iron phosphosulfide (NiFeSP) nanotube array electrode through two‐step sulfurization/phosphorization reported. The as‐obtained NiFeSP nanotubes comprise abundant NiFeS/NiFeP heterointerfaces under‐coordinated metal sites, exhibiting outstanding activity durability oxygen evolution reactions (HER OER) in simulated alkaline‐seawater solution (KOH + NaCl), with an overpotential 380 (HER) 260 mV (OER) at 500 mA cm ‐2 1000 h. Theoretical calculations support observed performance, showing heterointerface sites synergistically lower barrier rate‐determining step reactions. also shows good catalytic performance urea oxidation reaction (UOR). By coupling UOR HER, bifunctional pair efficiently catalyze overall urea‐mediated alkaline‐saline water 1.938 V h without notable degradation.

Language: Английский

---

Recent progress on design and applications of transition metal chalcogenide-associated electrocatalysts for the overall water splitting

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2022, Volume and Issue: 44, P. 7 - 49

Published: Dec. 2, 2022

Language: Английский

---

In situ growth of iron incorporated Ni3S2 nanosheet on nickel foam in mediating electron transfer to peroxymonosulfate for pollutant abatement

Journal of Environmental Sciences, Journal Year: 2024, Volume and Issue: 150, P. 704 - 718

Published: April 6, 2024

Language: Английский

---

Iron, Tungsten Dual‐Doped Nickel Sulfide as Efficient Bifunctional Catalyst for Overall Water Splitting

Small, Journal Year: 2024, Volume and Issue: unknown

Published: May 25, 2024

Developing low-cost and highly efficient bifunctional catalysts for both the oxygen evolution reaction (OER) hydrogen (HER) is a challenging problem in electrochemical overall water splitting. Here, iron, tungsten dual-doped nickel sulfide catalyst (Fe/W-Ni

Language: Английский

---

Asymmetric active sites originate from high-entropy metal selenides by joule heating to boost electrocatalytic water oxidation

Joule, Journal Year: 2024, Volume and Issue: 8(8), P. 2342 - 2356

Published: June 25, 2024

Language: Английский

---

Interfacial Electronic Modification of Nickel Phosphide via Iron Doping: An Efficient Bifunctional Catalyst for Water/Seawater Splitting

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 16, 2024

Abstract Seawater electrolysis is an innovative technique that can potentially transform hydrogen production and contribute to environmental redemption. However, the lack of good bifunctional electrocatalysts may hinder further development this technology. Herein, nickel hydroxide nanosheets be employed as a precursor producing 3D Prussian blue analogue (PBA) with distinct dimensional structure. Nickel are formed within foam undergo reaction potassium ferricyanide (K 3 [Fe(CN) 6 ]). The structure sheets‐like well‐preserved, containing multitude PBA nanocubes. Following phosphidation at 350 °C, iron‐doped phosphide (Fe‐doped Ni 2 P (1.0 m M ) nanosheets) demonstrates remarkable potential electrocatalyst for total water/seawater splitting. This exceptional performance in overall water splitting, achieving current densities 100 500 mA cm −2 1.0 KOH remarkably low voltages 1.65 2.06 V, respectively. Additionally, its improved ability resist corrosion hydrophilic surface makes it suitable seawater splitting process. material generate KOH, resulting 1.74 2.32 V. These outstanding results, together durability, indicate material's strong practical electrolysis.

Language: Английский

---

Interfacial Electronic Modulation of Mo₅N₆/Ni₃S₂ Heterojunction Array Boosts Electrocatalytic Alkaline Overall Water Splitting

Small, Journal Year: 2024, Volume and Issue: 20(29)

Published: Feb. 11, 2024

Bifunctional electrocatalysts with excellent activity and durability are highly desirable for alkaline overall water splitting, yet remain a significant challenge. In this contribution, palm-like Mo

Language: Английский

---

Surface-derived phosphate layer on NiFe-layered double hydroxide realizes stable seawater oxidation at the current density of 1 A°cm−2

Nano Research, Journal Year: 2024, Volume and Issue: 17(7), P. 5786 - 5794

Published: March 15, 2024

Language: Английский

---