Novel Atmospherically Plasma Sprayed Micro Porous Layer for Anion Exchange Membrane Water Electrolysis Operating With Supporting Electrolyte DOI Creative Commons
Vincent Wilke, Marco Rivera, Tobias Morawietz

и другие.

Electrochemical Science Advances, Год журнала: 2024, Номер unknown

Опубликована: Дек. 19, 2024

ABSTRACT Anion exchange membrane water electrolysis (AEMWE) is one of the most promising candidates for green hydrogen production needed de‐fossilization global economy. As AEMWE can operate at high efficiency without expensive Platinum Group Metal (PGM) catalysts or titanium cell components, required in state‐of‐the‐art proton (PEMWE), has potential to become a cheaper alternative large‐scale hydrogen. In AEMWE, porous transport layer and/or micro (PTL/MPL) balance several important tasks. It responsible managing electrolyte liquid catalyst layers (CLs), evolving gas bubbles away from CLs and establishing thermal electrical connection between bipolar plates (BPPs). Furthermore, especially case CL directly deposited onto MPL, forming catalyst‐coated substrate (CCS), MPL surface properties significantly impact stability. Thus, key performance‐defining components AEMWE. this study, we employed flexible easily upscaled technique atmospheric plasma spraying (APS) deposit spherical nickel coated graphite on low‐cost mesh PTL. Followed by oxidative carbon removal, nickel‐based with superior structural parameters compared state‐of‐art felt was produced. Due higher activity APS‐MPL itself, as well improved utilization, reduction voltage 63 mV 2 A cm −2 achieved an operating 1 M KOH electrolyte. This improvement enabled internal area unique pore structure broad size distribution finely structured providing large contacting CLs.

Язык: Английский

Catalytic electrode comprising a gas diffusion layer and bubble-involved mass transfer in anion exchange membrane water electrolysis: A critical review and perspectives DOI Creative Commons

Ning Yang,

Haonan Li, Xiao Lin

и другие.

Journal of Energy Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

17

Organic-inorganic hybrid-based S-scheme heterostructure in solar-to-fuel conversion DOI
Yongkang Liu, Chunguang Chen, Graham Dawson

и другие.

Journal of Material Science and Technology, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

2

Ether‐Free Alkaline Polyelectrolytes for Water Electrolyzers: Recent Advances and Perspectives DOI
Chuan Hu, Yong Wang, Young Moo Lee

и другие.

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 1, 2024

Anion exchange membrane (AEM) water electrolyzers (AEMWEs) have attracted great interest for their potential as sustainable, environmentally friendly, low-cost sources of renewable energy. Alkaline polyelectrolytes play a crucial role in AEMWEs, determining performance and longevity. Because heteroatom-containing polymers been shown to poor durability alkaline conditions, this review focuses on ether-free polyelectrolytes, which are more chemically stable. The merits, weaknesses, challenges preparing AEMs summarized highlighted. evaluation synthesis methods polymers, modification strategies, cationic stability will provide insights valuable the structural design future polyelectrolytes. Moreover, situ degradation mechanisms ionomers during AEMWE operation revealed. This provides into AEMWEs accelerate widespread commercialization.

Язык: Английский

Процитировано

8

The critical role of the anode porous transport layer/catalyst layer interface of polymer electrolyte membrane water electrolyzers: A parametric analysis DOI
Pablo A. García‐Salaberri,

Hung-Ming Chang,

J. Lang

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160722 - 160722

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

1

Degradation of PGM and PGM-free Coatings on PEMWE Porous Transport Layers DOI Creative Commons
Lukas Stein, Arne Dittrich, Dominic Walter

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Март 11, 2025

A good and long-term stable electrical contact between the porous anode transport layer (PTL) adjacent catalyst is essential for efficient polymer electrolyte membrane water electrolyzers. This study describes extensive comparison of seven titanium passivation-protecting coatings using short- measurements at least 2000 h. The are supported by before after scanning electron microscope investigations cross sections, energy-dispersive X-ray spectroscopy, diffractometry coatings, resistance measurements, ex situ rapid aging tests. Overall, iridium platinum PTL offer outstanding excellent corrosion protection. Compared to uncoated reference sample, shows a 93% reduction in overall degradation rate 7 μV h–1 (at current density 3 cm–2) over 5000 h even reduces ohmic overvoltages time first Interestingly, interface flow field does not appear be influenced precious metal and, hence, need coated. In contrast, niobium nitride under investigation do provide an improvement compared but show dissolution oxidation phenomena, respectively. Titanium hydride produced hydrochloric acid improves 49% 62% terms reference. It also saturation behavior with 23 second 1000 measurement. Ex tests additionally support main trends. For all surface treatments, more detailed information about occurring mechanisms reversible obtained separating into partial rates overvoltage mechanisms.

Язык: Английский

Процитировано

1

Status and Outlook of Solid Electrolyte Membrane Reactors for Energy, Chemical, and Environmental Applications DOI Creative Commons
Liangdong Fan,

Wanying Luo,

Qunbo Fan

и другие.

Chemical Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Solid electrolyte membrane reactors (SEMRs) can be operated at high temperatures with distinct reaction kinetics, or lower (300-500 °C) for industrially relevant energy applications (such as solid oxide fuel/electrolysis cells, direct carbon fuel and metal-air batteries), chemical alkane dehydrogenation, C-C coupling, NH3 synthesis), environmental (De-NO x , CO2 utilization, separation), well their combined (one-step coupled CO2/H2O co-electrolysis methanation reaction, power cogeneration) applications. SEMRs efficiently integrate electrical, chemical, thermal sectors, thereby circumventing thermodynamic constraints production separation issues. They offer a promising way to achieve neutrality improve manufacturing processes. This review thoroughly examines utilizing various ionic conductors, namely O2-, H+, hybrid types, operations in different reactor/cell architectures panel, tubular, single chamber, porous electrolytes). The operate modes including pumping, extraction, reversible, electrical promoting modes, providing multiple functionalities. discussion extends examining critical materials solid-state cells catalysts essential specific technologically important reactions, focusing on electrochemical performance, conversion efficiency, selectivity. also serves first attempt address the potential of process-intensified through integration photo/solar, thermoelectric, plasma explores unique phenomenon promotion catalysis (EPOC) reactors. ultimate goal is insight into ongoing scientific technical challenges like durability operational cost hindering widespread industrial implementation while exploring opportunities this rapidly growing research domain. Although still an early stage limited demonstrations applications, advances materials, science, ionics, reactor design, process intensification and/or system will fill gaps current temperature operation sustainable clean production, efficient conversion/storage, enhancement.

Язык: Английский

Процитировано

0

Enhancement of mass transport behavior by controlling the surface structure of the porous transport layer for polymer electrolyte membrane water electrolysis DOI
Han Eol Lee, Ta Nam Nguyen,

Tuan Linh Doan

и другие.

Applied Thermal Engineering, Год журнала: 2025, Номер unknown, С. 126232 - 126232

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0

Advances in Ru-based Acidic OER Electrocatalysts: Addressing the Activity-Stability Trade-off DOI Creative Commons
Yurui Wang, Yang Liu, Jinqiang Zhang

и другие.

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0

Role of Patterned Wettability of Anode Porous Transport Layer in Enhancing Two-Phase Transport for Proton Exchange Membrane Electrolyzers DOI

Yang Xu,

Dingding Ye, Yang Chen

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Май 27, 2025

Green hydrogen production through proton exchange membrane (PEM) electrolyzers, powered by renewable energy sources and capable of operating at high current densities, has attracted considerable attention. However, two-phase transport within the anode porous layer (PTL) catalyst (CL) significantly impacts performance PEM electrolyzers. In this work, role patterned wettability PTL is investigated in optimizing gas distribution PTL, PTL/CL interface, CL for electrolyzers a three-dimensional, two-phase, dual-scale pore network model. The modeling (PNM) approach analyzes invasion process with view to examining impact on transport. Initially, invades larger pores resulting rapid increase gas-phase saturation. As continues, rate saturation declines. By adjusting width ratio hydrophobic regions can be effectively reduced. Notably, implementing hydrophilic/hydrophobic 3:1 25 μm enhances water transport, reducing 18%, which over 14% lower than that observed original wettability.

Язык: Английский

Процитировано

0

Ether‐Free Alkaline Polyelectrolytes for Water Electrolyzers: Recent Advances and Perspectives DOI Open Access
Chuan Hu, Yong Wang, Young Moo Lee

и другие.

Angewandte Chemie, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 1, 2024

Abstract Anion exchange membrane (AEM) water electrolyzers (AEMWEs) have attracted great interest for their potential as sustainable, environmentally friendly, low‐cost sources of renewable energy. Alkaline polyelectrolytes play a crucial role in AEMWEs, determining performance and longevity. Because heteroatom‐containing polymers been shown to poor durability alkaline conditions, this review focuses on ether‐free polyelectrolytes, which are more chemically stable. The merits, weaknesses, challenges preparing AEMs summarized highlighted. evaluation synthesis methods polymers, modification strategies, cationic stability will provide insights valuable the structural design future polyelectrolytes. Moreover, situ degradation mechanisms ionomers during AEMWE operation revealed. This provides into AEMWEs accelerate widespread commercialization.

Язык: Английский

Процитировано

3