Materials Today Physics, Год журнала: 2024, Номер 49, С. 101592 - 101592
Опубликована: Ноя. 13, 2024
Язык: Английский
Nature Communications, Год журнала: 2024, Номер 15(1)
Опубликована: Авг. 5, 2024
Electrocatalytic H
Язык: Английский
Процитировано
66
Small, Год журнала: 2025, Номер unknown
Опубликована: Янв. 20, 2025
Abstract Designing cost‐effective electrocatalysts with fast reaction kinetics and high stability is an outstanding challenge in green hydrogen generation through overall water splitting (OWS). Layered double hydroxide (LDH) heterostructure materials are promising candidates to catalyze both oxygen evolution (OER) (HER), the two OWS half‐cell reactions. This work develops a facile hydrothermal route synthesiz hierarchical MoS 2 @NiFeCo‐LDH @NiFeCo‐Mo(doped)‐LDH electrocatalysts, which exhibit extremely good OER HER performance as witnessed by their low IR‐corrected overpotentials of 156 61 mV at current density 10 mA cm −2 under light assistance. The @NiFeCo‐Mo(doped)‐LDH‐MoS cell achieves voltage 1.46V during light‐assisted electrolysis. Both exhibited exceptional industrially relevant conditions, maintaining 1 A minimal alterations potential performance. experimental computational results demonstrate that doping LDH matrix high‐valence Mo atoms quantum dots improves electrocatalytic activity 1) enhancing electron transfer, 2) making electrocatalyst metallic, 3) increasing number active sites, 4) lowering thermodynamic overpotential, 5) changing mechanism. Overall, this synthesis method design highly stable electrocatalysts.
Язык: Английский
Процитировано
1
Advanced Energy Materials, Год журнала: 2025, Номер unknown
Опубликована: Фев. 18, 2025
Abstract The seawater splitting for green hydrogen production is emerging as a key research focus sustainable energy. Nevertheless, the inherent complexity of seawater, with its diverse ion composition – especially chloride ions, calcium and magnesium ions poses significant challenges in catalyst design. Designing highly active electrocatalysts that can resist corrosion during still challenge. This article presents an overview fundamental mechanisms explores issues encountered at both cathode anode electrode. then shifts to chlorine anode, examining recent advances preventing strategies. Notably, these design strategies, such anionic passivation layers, corrosion‐resistant metal doping, physical barrier situ phase transition‐driven desalination, decoupled splitting, are comprehensively investigated, all which aim enhance catalytic stability splitting. review concludes outlook on practical applications producing through
Язык: Английский
Процитировано
1
Surfaces and Interfaces, Год журнала: 2024, Номер 51, С. 104772 - 104772
Опубликована: Июль 10, 2024
Язык: Английский
Процитировано
6
Catalysis Science & Technology, Год журнала: 2024, Номер 14(10), С. 2717 - 2721
Опубликована: Янв. 1, 2024
An La–Ni(OH) 2 /NF catalyst exhibits superior performance for alkaline seawater oxidation, requiring a low overpotential of 434 mV to achieve current density 500 mA cm −2 .
Язык: Английский
Процитировано
5
Advanced Energy and Sustainability Research, Год журнала: 2024, Номер unknown
Опубликована: Июнь 16, 2024
Electrocatalytic water splitting through the electrolyzer is most promising strategy for hydrogen production. Recently, electrolysis mainly based on high‐purity freshwater, which not only consumes a large number of freshwater resources but also improves overall cost due to extra purification system. Hence, direct seawater more desirable large‐scale generation. As known, dominant rate‐determining step anodic oxygen evolution reaction (OER), involves four‐electron transfer and owns much larger overpotential than cathodic reaction. The challenge design OER catalysts in media competition between chloride oxidation reaction, greatly influences energy efficiency. except activity stability, selectivity another key point splitting. Herein, after brief introduction two half reactions splitting, latest metal hydr(oxide) electrocatalysts with different crystalline structures are summarized according previous reports. Moreover, advantages disadvantages three common electrolyzers compared. Finally, perspectives production outlined practical applications.
Язык: Английский
Процитировано
5
Nano Energy, Год журнала: 2025, Номер 135, С. 110662 - 110662
Опубликована: Янв. 9, 2025
Язык: Английский
Процитировано
0
ACS Applied Nano Materials, Год журнала: 2025, Номер 8(3), С. 1332 - 1337
Опубликована: Янв. 15, 2025
Seawater electrolysis has garnered considerable interest as an environmentally sustainable method for hydrogen production. However, the abundance of chloride ions in seawater poses a challenge to electrocatalyst stability, underscoring need catalysts with exceptional durability and efficiency facilitate effective oxidation. In this study, thiamine pyrophosphate (TPP) was intercalated into NiFe layered double hydroxide on nickel foam (NF/NiFe LDH), creating advanced oxidation LDH@TPP) that effectively resists chloride-induced corrosion. Remarkably, TPP-intercalated catalyst demonstrates superior kinetics selectivity oxygen evolution reaction, reaching current density 1 A cm–2 overpotential low 385 mV, while sustaining stable performance over 500 h.
Язык: Английский
Процитировано
0
Small, Год журнала: 2025, Номер unknown
Опубликована: Янв. 21, 2025
Abstract Renewable energy‐powered seawater electrolysis is a green and attractive technique for producing high‐purity hydrogen. However, severe chlorideions (Cl − ) their derivatives tend to corrode anodic catalysts at ampere‐level current densities hinder the application of seawater‐to‐H 2 systems. Herein, polycalmagite (PCM)‐coated NiFe layered double hydroxide presented on Ni foam (NiFe LDH@PCM/NF) that exhibits exceptional stability in alkaline seawater. PCM not only acts as conductive layer reduce charge transfer resistance anodes but also polymer‐based protective inhibit Cl adsorption stabilize metal ions oxidation due its own anions strong adhesion, thereby increasing activity during Thus, LDH@PCM/NF needs low overpotential 364 mV reach up 1000 mA cm −2 maintains operation 500 h without degradation. Moreover, minimal amount hypochlorite can be detected electrolyte after 500‐h test. This development affords significant exploration creating durable efficient anodes, highlighting importance polymer coating toward anti‐corrosion oxidation.
Язык: Английский
Процитировано
0
Inorganic Chemistry, Год журнала: 2025, Номер unknown
Опубликована: Янв. 28, 2025
Seawater electrolysis has emerged as a promising approach for the generation of hydrogen energy, but production deleterious chlorine derivatives (e.g., chloride and hypochlorite) presents significant challenge due to severe corrosion at anode. Transition metal-coordinated polymers have garnered attention electrocatalysts alkaline seawater oxidation (ASO), attributed their remarkable resistance, high conductivity, facile synthesis. In this study, we employ an anodic oxidation-electrodeposition strategy grow NiFe-polyaniline on NiFe layered double hydroxide supported Ni foam (NiFe LDH@NiFe-PANI/NF) highly efficient catalyst ASO. We demonstrate stable ASO industrial-level current densities (j) by employing synergistic that integrates NiFe-PANI, which offers resistance chlorine-induced corrosion, molybdate, effectively repels anions. seawater, LDH@NiFe-PANI/NF requires 380 mV sustain j 1000 mA cm–2, it exhibits continuous operation 500 h cm–2. Besides, anion-exchange membrane electrolyzer consisting voltage 2.16 V drive 300 Notably, can operate stably 120 h, highlighting its potential sustainable energy applications.
Язык: Английский
Процитировано
0