Unveiling the Role of Boron on Nickel‐Based Catalyst for Efficient Urea Oxidation Assisted Hydrogen Production DOI

Yitao Hu,

Li Shao,

Zhiqi Jiang

et al.

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

Published: Sept. 15, 2024

Abstract Urea oxidation reaction (UOR) is an ideal alternative to oxygen evolution (OER) for efficient hydrogen production but immensely plagued by slow kinetics. Herein, a multilayer hole amorphous boron‐nickel catalyst (a‐NiB x ) fabricated through simple chemical plating method, which displays intriguing catalytic activity toward UOR, demanding low working potential of 1.4 V reach 100 mA cm −2 . The high performance credited the formation metaborate (BO 2 − ), can promote high‐oxidation‐state NiOOH active phase and optimize adsorption urea molecules. This be confirmed operando spectroscopy characteristics density functional theory calculations. Consequently, assembled electrolyzer utilizing NiB as bifunctional catalysts exhibited splendid activity, requiring evidently lower voltage 1.66 current 1.57 when using Pt/C cathode catalyst. Moreover, secured robust stability over 200 h, well four times higher rate than traditional water electrolysis.

Language: Английский

Challenges and strategies in catalysts design towards efficient and durable alkaline seawater electrolysis for green hydrogen production DOI Open Access
Jaehyun Kim, Jin Ho Seo, Jae Kwan Lee

et al.

Energy Materials, Journal Year: 2025, Volume and Issue: 5(8)

Published: March 21, 2025

Seawater electrolysis offers a sustainable solution for hydrogen production by utilizing ocean water as an electrolyte. However, the chlorine evolution reaction (ClER) and accumulation of magnesium calcium precipitates pose significant challenges to efficiency durability. ClER competes with oxygen reaction, reducing output accelerating electrode degradation, while precipitate formation on cathode blocks catalytic sites impairs long-term performance. Anion exchange membrane electrolyzers tackle these leveraging alkaline media suppress enhance catalyst stability. Recent advances in selective catalysts, protective coatings, alternative oxidation reactions further improve selectivity energy efficiency. Additionally, strategies such surface engineering pH modulation mitigate formation, ensuring stable operation. Scaling innovations into anion electrolyzer systems demonstrates their potential industrial-level production. By overcoming fundamental practical barriers, seawater toward commercial deployment future.

Language: Английский

Citations

2
Integrated electrochemical and chemical system for ampere-level production of terephthalic acid alternatives and hydrogen DOI Creative Commons
Lin Chen, Chang Yu, Xuedan Song

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Sept. 14, 2024

Language: Английский

Citations

17
Stable Seawater Electrolysis Over 10 000 H via Chemical Fixation of Sulfate on NiFeBa‐LDH DOI

Haocheng Chen,

Pingying Liu, Wenbo Li

et al.

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

Published: Sept. 18, 2024

Abstract Although hydrogen production through seawater electrolysis combined with offshore renewable energy can significantly reduce the cost, corrosive anions in strictly limit commercialization of direct technology. Here, it is discovered that electrolytic anode be uniformly protected a environment by constructing NiFeBa‐LDH catalyst assisted additional SO 4 2− electrolyte. In experiments, achieves unprecedented stability over 10 000 h at 400 mA cm −2 both alkaline saline electrolyte and seawater. Characterizations simulations reveal atomically dispersed Ba 2+ enables chemical fixation free on surface, which generates dense layer to repel Cl − along preferentially adsorbed presence an applied electric field. terms simplicity effectiveness design, confident beacon for

Language: Английский

Citations

15
Electronic structure engineering of NiFe hydroxide nanosheets via ion doping for efficient OER electrocatalysis DOI
Can Zhang, Jing Wang,

Hang Ma

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 156430 - 156430

Published: Oct. 1, 2024

Language: Английский

Citations

12
High-Entropy Ultrathin Amorphous Metal–Organic Framework-Stabilized Ru(Mo) Dual-Atom Sites for Water Oxidation DOI

Xueqin Mu,

Min Yu, Xingyu Liu

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: unknown, P. 5763 - 5770

Published: Nov. 6, 2024

High-entropy metal–organic frameworks (HE-MOFs) offer immense potential in electrocatalysis due to their diverse metallic compositions and high densities of active sites. Integrating bimetallic single-atom catalysts (SACs) with HE-MOFs for enhanced oxygen evolution reaction (OER) performance remains challenging. Here, we stabilize atomically dispersed Ru Mo amorphous HE-MOF nanosheets (HE(Ru,Mo)-MOFs) via situ-formed high-entropy oxides, elucidating the deprotonation mechanism. Evidence supports presence high-density O-bridged dual-atom The multimetallic composition induces electronic redistribution balances oxidation state metal sites, enhancing intrinsic OER activity. HE(Ru,Mo)-MOFs exhibit low overpotentials 267 mV@10 mA cm–2 266 alkaline freshwater industrial wastewater, respectively, exceptional durability surpassing that commercial RuO2 catalysts. Mechanistic insights reveal atomic dispersion facilitates rapid charge transfer intermediate transformation, promising advanced energy conversion.

Language: Английский

Citations

10
Elucidating the superwetting FeOOH-modified NiMoO4 electrodes for efficient alkaline oxygen evolution reaction: An in-situ spectroscopy study DOI

Hongru Hao,

Jiahui Wang, Zhe Wang

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 363, P. 124814 - 124814

Published: Nov. 12, 2024

Language: Английский

Citations

10
一种用于肼氧化-复合海水电解制氢的富吡啶氮碳纸 DOI Open Access
Shanshan Ma, Bo Yu, Bao Yu Xia

et al.

Science China Materials, Journal Year: 2024, Volume and Issue: 67(3), P. 752 - 761

Published: Feb. 20, 2024

Language: Английский

Citations

9
Efficient and Ultrastable Seawater Electrolysis at Industrial Current Density with Strong Metal‐Support Interaction and Dual Cl−‐Repelling Layers DOI
Dong Liu,

Xiaotian Wei,

Jianxi Lu

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(49)

Published: Oct. 25, 2024

Abstract Direct seawater electrolysis is emerging as a promising renewable energy technology for large‐scale hydrogen generation. The development of Os‐Ni 4 Mo/MoO 2 micropillar arrays with strong metal‐support interaction (MSI) bifunctional electrocatalyst reported. structure enhances electron and mass transfer, extending catalytic reaction steps improving efficiency. Theoretical experimental studies demonstrate that the MSI between Os Ni optimizes surface electronic catalyst, reducing barrier thereby activity. Importantly, first time, dual Cl − repelling layer constructed by electrostatic force to safeguard active sites against attack during oxidation. This includes Os─Cl adsorption an in situ‐formed MoO 2− layer. As result, catalyst exhibits ultralow overpotential 113 336 mV reach 500 mA cm −2 HER OER natural from South China Sea (without purification, 1 m KOH added). Notably, it demonstrates superior stability, degrading only 0.37 µV h −1 after 2500 oxidation, significantly surpassing technical target 1.0 set United States Department Energy.

Language: Английский

Citations

9
Surface Corrosion‐Resistant and Multi‐Scenario MoNiP Electrode for Efficient Industrial‐Scale Seawater Splitting DOI
Weiju Hao,

Xunwei Ma,

Lincai Wang

et al.

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

Published: Oct. 30, 2024

Abstract The construction of efficient and durable multifunctional electrodes for industrial‐scale hydrogen production presents a main challenge. Herein, molybdenum‐modulated phosphorus‐based catalytic (Mo‐NiP@NF) are prepared via mild electroless plating. Heteroatoms doping or heterostructures can reconfigure the intrinsic electronic structure pre‐catalyst optimizes key intermediates adsorption. Moreover, (hypo/meta‐)phosphite anions (PO x δ− ) molybdate ions (MoO on electrode surface Mo‐NiP@NF afford resistance to chloride (Cl − corrosion. exhibits ultralow overpotentials 278/550 282/590 mV at 1 A cm −2 during hydrogen/oxygen evolution reaction (HER/OER) in alkaline simulated real seawater, respectively, whereas overall seawater splitting (OWS) reach 1.96 1.97 V cell . Remarkably, maintains stable operation 1500 h OWS. scalability allowing assembly proton exchange membrane (PEM) electrolyzer powered by photovoltaic energy, simulating portable hydrogen‐oxygen respirator provides an oxygen/hydrogen flows 160/320 mL min −1 Expanding further, trace ruthenium‐loaded catalyst sodium borohydride (NaBH 4 hydrolysis achieving generation rate (HGR) 11049.2 g This work strategic innovations optimization solutions economical multi‐scenario green energy conversion materials application.

Language: Английский

Citations

9
Activating FeMoO4 nanosheet arrays by partial nickel substitution for efficient electrocatalytic seawater oxidation DOI

Jun-Ya Gao,

Yin-Lei Ma,

Guangsheng Qian

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Nickel is integrated into self-supported FeMoO 4 nanosheet arrays by a spontaneous redox reaction, which shows significantly enhanced electrocatalytic OER performance and long-term durability under both alkaline seawater conditions.

Language: Английский

Citations

9