Enhanced electrochemical hydrogen compression performance with a gradient water-retaining hybrid membrane

Zou, Jiexin; Huang, Henghui; Zaman, Shahid; Yao, Keguang; Xing, Shuang; Chen, Ming; Wang, Haijiang; Wang, Min

doi:10.1016/j.cej.2022.141113

Cited by 10 publications

(2 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These challenges encompass multifaceted issues such as the heightened resistance encountered in the local O 2 transport, limited mass transfer at the ionomer/Pt interface, and CCL flooding due to the accumulation of H 2 O by-products. 52,53 Consequently, it becomes imperative to develop effective strategies for addressing these challenges via advanced CCL design strategies. The structural optimization of the CCL is thought to be critical since it directly influences the mass transport capacities required for effective fuel cell operation.…”

Section: Table 1 Properties and Performance Of Pt-based Cclsmentioning

confidence: 99%

Optimized mass transfer in a Pt-based cathode catalyst layer for PEM fuel cells

Wang,

Teng,

Zaman

et al. 2024

Green Chem.

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Table 1 Properties and Performance Of Pt-based Cclsmentioning

confidence: 99%

Optimized mass transfer in a Pt-based cathode catalyst layer for PEM fuel cells

Wang,

Teng,

Zaman

et al. 2024

Green Chem.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Moreover, the principles of this testing method can be extended to mass transport resistance testing in electrochemical hydrogen compressors (EHCs). EHC is a device that utilizes electrochemical principles to compress hydrogen gas to a higher pressure [ 24 , 25 ]. In an EHC, there is a certain mass transport resistance in the MEA involving the H 2 , H + , and H 2 O transfer [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

Elucidating the Mass Transportation Behavior of Gas Diffusion Layers via a H2 Limiting Current Test

Wang,

Zhao,

Kong

et al. 2023

Materials

Self Cite

View full text Add to dashboard Cite

The gas diffusion layer (GDL), as a key component of proton exchange membrane fuel cells (PEMFCs), plays a crucial role in PEMFC’s polarization performance, particularly in mass transport properties at high current densities. To elucidate the correlation between GDLs’ structure and their mass transport properties, a limiting current test with the H2 molecular probe was established and employed to investigate three representative GDLs with and without the microporous layer (MPL). By varying humidity and back pressure, the mass transport resistance of three GDLs was measured in an operating fuel cell, and an elaborate analysis of H2 transport was conducted. The results showed that the transport resistance (RDM) of GDLs was affected by the thickness and pore size distribution of the macroporous substrate (MPS) and the MPL. In the process of gas transport, the smaller pore size and thicker MPL increase the force of gas on the pore wall, resulting in an increase in transmission resistance. Through further calculation and analysis, the total transport resistance can be divided into pressure-related resistance (RP) and pressure-independent resistance (RNP). RP mainly originates from the transport resistance in both MPLs and the substrate layers of GDLs, exhibiting a linear relationship to the pressure; RNP mainly originates from the transport resistance in the MPLs. 29BC with thick MPL shows the largest RNP, and T060 without MPL shows the RNP = 0. This methodology enables in situ measurements of mass transport resistances for gas diffusion media, which can be easily applied for developing and deploying PEMFCs.

show abstract

Advances in Stability of NiFe‐Based Anodes toward Oxygen Evolution Reaction for Alkaline Water Electrolysis

Song,

Xia,

Zaman

et al. 2024

Small

View full text Add to dashboard Cite

Alkaline electrolysis plays a crucial role in sustainable energy solutions by utilizing electrolytic cells to produce hydrogen gas, providing a clean and efficient method for energy storage and conversion. Efficient, stable, and low‐cost electrocatalysts for the oxygen evolution reaction (OER) are essential to facilitate alkaline water electrolysis on a commercial scale. Nickel‐iron‐based (NiFe‐based) transition metal electrocatalysts are considered the most promising non‐precious metal catalysts for alkaline OER due to their low cost, abundance, and tunable catalytic properties. Nevertheless, the majority of existing NiFe‐based catalysts suffer from limited activity and poor stability, posing a significant challenge in meeting industrial applications. This also highlights a common situation where the emphasis on material activity receives significant attention, while the equally critical stability aspect is often underemphasized. Initiating with a comprehensive exploration of the stability of NiFe‐based OER materials, this article first summarizes the debate surrounding the determination of active sites in NiFe‐based OER electrocatalysts. Subsequently, the degradation mechanisms of recently reported NiFe‐based electrocatalysts are outlined, encompassing assessments of both chemical and mechanical endurance, along with essential approaches for enhancing their stability. Finally, suggestions are put forth regarding the essential considerations for the design of NiFe‐based OER electrocatalysts, with a focus on heightened stability.

show abstract

Enhanced electrochemical hydrogen compression performance with a gradient water-retaining hybrid membrane

Cited by 10 publications

References 63 publications

Optimized mass transfer in a Pt-based cathode catalyst layer for PEM fuel cells

Optimized mass transfer in a Pt-based cathode catalyst layer for PEM fuel cells

Elucidating the Mass Transportation Behavior of Gas Diffusion Layers via a H2 Limiting Current Test

Advances in Stability of NiFe‐Based Anodes toward Oxygen Evolution Reaction for Alkaline Water Electrolysis

Contact Info

Product

Resources

About