Proton-Exchange Membrane Electrolysis for Green Hydrogen Production: Fundamentals, Cost Breakdown, and Strategies to Minimize Platinum-Group Metal Content in Hydrogen Evolution Reaction Electrocatalysts DOI Open Access
H. M. Araújo,

Julián A. Gómez,

Diogo M.F. Santos

et al.

Catalysts, Journal Year: 2024, Volume and Issue: 14(12), P. 845 - 845

Published: Nov. 22, 2024

Green hydrogen (H2) has emerged as a promising energy carrier for decarbonizing the industrial, building, and transportation sectors. However, current green H2 production technologies face challenges that limit cost reduction scaling up. Platinum-group metals (PGMs), including platinum iridium, present exceptional electrocatalytic properties water splitting, but their high is significant barrier. This directly impacts overall of electrolyzers, thus increasing costs. The work covers fundamentals electrolysis, currently available technologies, focusing on proton-exchange membrane critical role electrocatalysts, discussing potential strategies reducing PGM content and, consequently, decreasing cost.

Language: Английский

Advances in MOFs and their derivatives for non‑noble metal electrocatalysts in water splitting DOI

Guoliang Gao,

Xueli Chen, Lu Han

et al.

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 503, P. 215639 - 215639

Published: Jan. 8, 2024

Language: Английский

Citations

73

Bicontinuous RuO2 nanoreactors for acidic water oxidation DOI Creative Commons
Ding Chen, Ruohan Yu, Kesong Yu

et al.

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

Published: May 9, 2024

Abstract Improving activity and stability of Ruthenium (Ru)-based catalysts in acidic environments is eager to replace more expensive Iridium (Ir)-based materials as practical anode catalyst for proton-exchange membrane water electrolyzers (PEMWEs). Here, a bicontinuous nanoreactor composed multiscale defective RuO 2 nanomonomers (MD-RuO -BN) conceived confirmed by three-dimensional tomograph reconstruction technology. The unique structure provides abundant active sites rapid mass transfer capability through cavity confinement effect. Besides, existing vacancies grain boundaries endow MD-RuO -BN with generous low-coordination Ru atoms weakened Ru-O interaction, inhibiting the oxidation lattice oxygen dissolution high-valence Ru. Consequently, media, electron- micro-structure synchronously optimized achieves hyper (196 mV @ 10 mA cm −2 ) an ultralow degradation rate 1.2 h −1 . A homemade PEMWE using also conveys high splitting performance (1.64 V 1 ). Theoretical calculations in-situ Raman spectra further unveil electronic mechanism processes, rationalizing enhanced synergistic effect defects protected sites.

Language: Английский

Citations

59

Recent advances of transition‐metal metaphosphates for efficient electrocatalytic water splitting DOI Creative Commons
Yuanyuan Zhang, Jie Wu,

Bingrong Guo

et al.

Carbon Energy, Journal Year: 2023, Volume and Issue: 5(12)

Published: April 25, 2023

Abstract Sustainable production of H 2 through electrochemical water splitting is great importance in the foreseeable future. Transition‐metal metaphosphates (TMMPs) have a three‐dimensional (3D) open‐framework structure and high content P (which exists as PO 3 − ), therefore been recognized highly efficient catalysts for oxygen evolution reaction (OER) bottleneck splitting. Furthermore, TMMPs can also contribute to hydrogen (HER) alkaline neutral media by facilitating dissociation, thus, overall be achieved using this kind material. In timely review, we summarize recent advances synthesis their applications OER HER. We present brief introduction synthetic strategies first two parts. Then, review latest progress made research on OER, HER, water‐splitting electrocatalysts. part, intrinsic activity well current strategy improving catalytic will discussed systematically. Finally, future opportunities remaining challenges application electrocatalysis field.

Language: Английский

Citations

56

Progress on the mechanisms of Ru-based electrocatalysts for the oxygen evolution reaction in acidic media DOI
Yuanyuan Shi, Han Wu,

Jiangwei Chang

et al.

Journal of Energy Chemistry, Journal Year: 2023, Volume and Issue: 85, P. 220 - 238

Published: June 20, 2023

Language: Английский

Citations

43

Electrochemical Oxidation of Small Molecules for Energy‐Saving Hydrogen Production DOI
Hainan Sun, Xiaomin Xu, Liangshuang Fei

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(30)

Published: May 27, 2024

Abstract Electrochemical water splitting is a promising technique for the production of high‐purity hydrogen. Substituting slow anodic oxygen evolution reaction with an oxidation that thermodynamically more favorable enables energy‐efficient Moreover, this approach facilitates degradation environmental pollutants and synthesis value‐added chemicals through rational selection small molecules as substrates. Strategies small‐molecule electrocatalyst design are critical to electrocatalytic performance, focus on achieving high current density, selectivity, Faradaic efficiency, operational durability. This perspective discusses key factors required further advancement, including technoeconomic analysis, new reactor system design, meeting requirements industrial applications, bridging gap between fundamental research practical product detection separation. aims advance development hybrid electrolysis applications.

Language: Английский

Citations

41

Heteroanion induced structural asymmetricity centered on Ru sites switches the rate-determining step of acid water oxidation DOI
Ding Chen, Hongyu Zhao, Ruohan Yu

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(5), P. 1885 - 1893

Published: Jan. 1, 2024

The intervening Se induces the structural asymmetricity of Ru-S 6 octahedrons and then regulates electronic structure active Ru site, which possesses excellent acid water oxidation performance as an Ir-free catalyst.

Language: Английский

Citations

32

Tandem catalysis in electrocatalytic nitrate reduction: Unlocking efficiency and mechanism DOI Creative Commons
Ziyang Wu, Yanhui Song,

Haocheng Guo

et al.

Interdisciplinary materials, Journal Year: 2024, Volume and Issue: 3(2), P. 245 - 269

Published: Feb. 28, 2024

Abstract The electrochemical nitrate reduction reaction (NO 3 RR) holds promise for ecofriendly removal. However, the challenge of achieving high selectivity and efficiency in electrocatalyst systems still significantly hampers mechanism understanding large‐scale application. Tandem catalysts, comprising multiple catalytic components working synergistically, offer promising potential improving NO RR. This review highlights recent progress designing tandem catalysts RR, including noble metal‐related system, transition metal electrocatalysts, pulsed electrocatalysis strategies. Specifically, optimization active sites, interface engineering, synergistic effects between catalyst components, various situ technologies, theory simulations are discussed detail. Challenges opportunities development scaling up RR further discussed, such as stability, durability, mechanisms. By outlining possible solutions future design, this aims to open avenues efficient comprehensive insights into mechanisms energy sustainability environmental safety.

Language: Английский

Citations

26

Addressing the Carbonate Issue: Electrocatalysts for Acidic CO2 Reduction Reaction DOI Creative Commons
Weixing Wu, Liangpang Xu, Qian Lü

et al.

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

Published: May 9, 2024

Abstract Electrochemical CO 2 reduction reaction (CO RR) powered by renewable energy provides a promising route to conversion and utilization. However, the widely used neutral/alkaline electrolyte consumes large amount of produce (bi)carbonate byproducts, leading significant challenges at device level, thereby impeding further deployment this reaction. Conducting RR in acidic electrolytes offers solution address “carbonate issue”; however, it presents inherent difficulties due competitive hydrogen evolution reaction, necessitating concerted efforts toward advanced catalyst electrode designs achieve high selectivity activity. This review encompasses recent developments RR, from mechanism elucidation design engineering. begins discussing mechanistic understanding pathway, laying foundation for RR. Subsequently, an in‐depth analysis advancements catalysts is provided, highlighting heterogeneous catalysts, surface immobilized molecular enhancement. Furthermore, progress made device‐level applications summarized, aiming develop high‐performance systems. Finally, existing future directions are outlined, emphasizing need improved selectivity, activity, stability, scalability.

Language: Английский

Citations

21

Defect Engineering of RuO2 Aerogel for Efficient Acidic Water Oxidation DOI
Xiang Han, Mengyuan Jin,

Tingting Chen

et al.

ACS Materials Letters, Journal Year: 2024, Volume and Issue: 6(3), P. 748 - 755

Published: Jan. 29, 2024

The development of renewable energy conversion devices heavily relies on the design high-performance electrocatalysts for water electrolysis systems. In this study, a Se-doped RuO2 aerogel (Se-RuO2 aerogel) with abundant defects is prepared as an excellent oxygen evolution reaction (OER) electrocatalyst in acidic media. Se-RuO2 exhibits remarkably low overpotential 166 mV at current density 10 mA cm–2 and long-term stability up to 48 h. Concurrently, detailed situ experiments demonstrate that can maintain during OER process, their path follows more stable adsorption mechanism. Therefore, it operate 100 h when assembled anode catalyst polymer electrolyte membrane (PEM) electrolyzer. This work provides new vision based defect engineering.

Language: Английский

Citations

19

Dual Doping in Precious Metal Oxides: Accelerating Acidic Oxygen Evolution Reaction DOI Open Access

Guoxin Ma,

Fei Wang, Rui Jin

et al.

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(4), P. 1582 - 1582

Published: Feb. 13, 2025

Developing a highly active and stable catalyst for acidic oxygen evolution reactions (OERs), the key half-reaction proton exchange membrane water electrolysis, has been one of most cutting-edge topics in electrocatalysis. A dual-doping strategy optimizes electronic environment, modifies coordination generates vacancies, introduces strain effects through synergistic effect two elements to achieve high catalytic performance. In this review, we summarize progress dual doping RuO2 or IrO2 OERs. The three main mechanisms OERs are dicussed firstly, followed by detailed examination development history catalysts, from experimentally driven systems machine learning (ML) theoretical screening systems. Lastly, provide summary remaining challenges future prospects, offering valuable insights into

Language: Английский

Citations

3