High Temperature Proton Exchange Membrane Fuel Cell Research Articles

Analysis of dead-end anode operation phenomena based on a novel transient 3D model of high-temperature proton exchange membrane fuel cell

The dead-end anode (DEA) mode effectively improves hydrogen utilization rate of high-temperature proton exchange membrane fuel cell (HT-PEMFC). However, being in DEA mode for a long time can lead to hydrogen starvation in HT-PEMFC and reduce its performance. This study aims to reduce the adverse effects of DEA on HT-PEMFC by setting up appropriate operating conditions. A novel transient model of HT-PEMFC was successfully developed by considering gas crossover phenomena. The paper evaluates the effects of key operating parameters, geometric parameters, and gas crossover phenomena on the transient performance of HT-PEMFC in DEA mode. The results show that the performance deterioration over time during the DEA process varies under different operating conditions. The amount of hydrogen and oxygen crossover decrease significantly with the increase of membrane thickness. In DEA mode, the performance of HT-PEMFC decreases with increasing of water vapor transport coefficient; when the anode is open, the comprehensive performance of medium water vapor transport coefficient is the best. This work can provide a suitable working condition scheme to reduce the adverse effects of DEA on HT-PEMFC.

Theoretical Analysis for Improving the Efficiency of HT-PEMFC through Unreacted Hydrogen Circulation

To increase the efficiency of a fuel processor and HT-PEMFC (high temperature-proton exchange membrane fuel cell) combined system, it is essential to improve the efficiency of the fuel processor. In this research, the fuel processor was simulated by the Aspen Hysys® simulator, and the effect of the various operating conditions on the total efficiency was investigated. The thermal efficiency of the fuel processor increased as the temperature and S/C (steam-to-carbon) ratio increased, and the efficiency was higher at an S/C ratio of 3 than at an S/C of 4 with a reformer temperature of 700 °C and higher. Under the selected operating conditions of the fuel processor, the recycling of unreacted hydrogen from the anode off-gas (AOG) of the HT-PEMFC improved the overall efficiency of the combined fuel processor and HT-PEMFC by a factor of 1.28. The operating conditions where the AOG supplied more heat than was required for fuel processor operation were excluded. The high-efficiency operating conditions of the fuel cell system were proposed with the target of 5 kW of output as the capacity of the household HT-PEMFC.

High-temperature stability of hydrocarbon-based Pemion® proton exchange membranes: A thermo-mechanical stability study

In this work, the ex-situ thermo-mechanical stability of Pemion® – a commercial mechanically-reinforced sulfo-phenylated polyphenylene-based proton exchange membrane – is investigated across a wide range of temperature (30–120 °C) and relative humidity (RH) (10–90%) conditions versus a commercial mechanically-reinforced PFSA material (r-PFSA). The Young's modulus and strain hardening of Pemion® are found to be temperature-independent, whereas r-PFSA exhibits significant decay above 90 °C. Pemion® maintains acceptable resistance against yielding within the tested range, while small mechanical stress values (e.g., 1 MPa) can cause spontaneous yielding in r-PFSA above 110 °C. The modulus of resilience for the r-PFSA membrane is also predicted to approach zero at elevated hygrothermal conditions, rendering them unsuitable for higher operating temperatures. Thermal transition and decomposition of samples are studied using DSC and TGA as well. Overall, Pemion® shows appreciable stability at hygrothermal ambience close to high-temperature PEMFC operating targets, i.e., 110–120 °C and 40–50% RH, likely due to its rigid-rod polyphenylene backbone with reduced intermolecular mobility.

High-entropy L12-Pt(FeCoNiCuZn)3 intermetallics for ultrastable oxygen reduction reaction

Enhancing the stability of Pt-based electrocatalysts for the sluggish cathodic oxygen reduction reaction (ORR) is critical for proton exchange membrane fuel cells (PEMFCs). Herein, high-entropy intermetallic (HEI) L12-Pt(FeCoNiCuZn)3 is designed for durable ORR catalysis. Benefiting from the unique HEI structure and the enhanced intermetallic phase stability, Pt(FeCoNiCuZn)3/C nanoparticles demonstrate significantly improved stability over Pt/C and PtCu3/C catalysts. The Pt(FeCoNiCuZn)3/C exhibits a negligible decay of the half-wave potential during 30,000 potential cycles from 0.6 to 1.0 V, whereas Pt/C and PtCu3/C are negatively shifted by 46 and 36 mV, respectively. Even after 10,000 cycles at potential up to 1.5 V, the mass activity of Pt(FeCoNiCuZn)3/C still shows ∼70% retention. As evidenced by the structural characterizations, the HEI structure of Pt(FeCoNiCuZn)3/C is well maintained, while PtCu3/C nanoparticles undergo severe Cu leaching and particle growth. In addition, when assembled Pt(FeCoNiCuZn)3/C as the cathode in high-temperature PEMFC of 160 °C, the H2-O2 fuel cell delivers almost no degradation even after operating for 150 h, demonstrating the potential for fuel cell applications. This work provides a facile design strategy for the development of high-performance ultrastable electrocatalysts.

Catalyst Development for High-Temperature Polymer Electrolyte Membrane Fuel Cell (HT-PEMFC) Applications.

A constant increase in global emission standard is causing fuel cell (FC) technology to gain importance. Over the last two decades, a great deal of research has been focused on developing more active catalysts to boost the performance of high-temperature polymer electrolyte membrane fuel cells (HT-PEMFC), as well as their durability. Due to material degradation at high-temperature conditions, catalyst design becomes challenging. Two main approaches are suggested: (i) alloying platinum (Pt) with low-cost transition metals to reduce Pt usage, and (ii) developing novel catalyst support that anchor metal particles more efficiently while inhibiting corrosion phenomena. In this comprehensive review, the most recent platinum group metal (PGM) and platinum group metal free (PGM-free) catalyst development is detailed, as well as the development of alternative carbon (C) supports for HT-PEMFCs.

Nitrogen‐Rich Rigid Polybenzimidazole With Phosphoric Acid Shows Promising Electrochemical Activity and Stability for High‐Temperature Proton Exchange Membrane Fuel Cells

AbstractPolybenzimidazoles (PBIs) are the most promising binders for the catalyst layer (CL) in high‐temperature proton exchange membrane fuel cells (HT‐PEMFC). However, traditional commercial PBIs are not applied in binders because they do not enhance the electrochemical performance and because the related solvents are not environmentally friendly. In addition, proton transfer channels in PBIs are not investigated at the microscopic and atomic scales to date. In this study, a nitrogen‐rich rigid PBI binder containing pyridine, diazofluorene, and partially grafted nitrile (PBPBI‐3CN) is prepared with a functionalized structure, good thermal stability, and good solubility in an environmentally friendly solvent. A membrane electrode assembly (MEA) is fabricated with the PBPBI‐3CN binder, providing a high peak power density, low resistance, and good stability. The protonation, hydrogen bond networks, and platform for proton transfer are confirmed in the CLs. The protonation of PBPBI‐3CN occurs in two steps. First, some phosphoric acid (PA) molecules bind to nitrogen‐containing acidophilic groups via preliminary protonation; second, multiple PA molecules then interact with nitrogen‐containing acidophilic groups via further protonation. With protonation as the foundation, a sufficient amount of PA molecules form a hydrogen bond network, and proton transfer channels are established.

Analyzing characteristic and modeling of high-temperature proton exchange membrane fuel cells with CO poisoning effect

High-temperature proton exchange membrane fuel cells (HT-PEMFC) have strong resistance to CO poisoning. However, the published CO poisoning models for HT-PEMFC are based on the finite element analysis method, which are difficult to use for the performance prediction and development of system control strategies due to a large amount of calculation. In the beginning, a semi-empirical model of HT-PEMFC is deduced based on the analysis of the CO poisoning characteristics. Then the key parameters of ohmic impedance and concentration polarization advance correction factor are obtained by fitting the polarization curves, dissociation and adsorption activation energy of H2 and CO are obtained by the calculation, respectively. The slope of the straight line segment in the ohmic polarization interval of the polarization curve is linearly related to ln[H2/CO]. The change of limiting current density is the main factor for the advance of concentration polarization. The fitted ohmic impedance varies with temperature and CO concentration, but changes little above 175 °C. CO coverage depends primarily on dissociation and adsorption activation energy of CO. Subsequently, the proposed model is validated with experimental data and shows high similarity. The model can be used for studying the systematic control strategy development and performance monitoring of HT-PEMFC.

PAF-6 Doped with Phosphoric Acid through Alkaline Nitrogen Atoms Boosting High-Temperature Proton-Exchange Membranes for High Performance of Fuel Cells.

High-temperature proton-exchange-membrane fuel cells (HT-PEMFCs) can offer improved energy efficiency and tolerance to fuel/air impurities. The high expense of the high-temperature proton-exchange membranes (HT-PEMs) and their low durability at high temperature still impede their further practical applications. In this work, a phosphoric acid (PA)-doped porous aromatic framework(PAF-6-PA) is incorporated into poly[2,2'-(p-oxydiphenylene)-5,5'-benzimidazole] (OPBI) to fabricate novel PAF-6-PA/OPBI composite HT-PEMs through solution-casting. The alkaline nitrogen structure in PAF-6 can be protonated with PA to provide proton hopping sites, and its porous structure can enhance the PA retention in the membranes, thus creating fast pathways for proton transfer. The hydrogen bond interaction between the rigid PAF-6 and OPBI can also enhance the mechanical properties and chemical stability of the composite membranes. Consequently, PAF-6-PA/OPBI exhibitsan optimal proton conductivity of 0.089 S cm-1 at 200°C, and peak power density of 437.7mW cm-2 (Pt: 0.3 mg cm-2 ), which is significantly higher than that of the OPBI. The PAF-6-PA/OPBI providesa novel strategy for the practical application of PBI-based HT-PEMs.

A Critical Review of Electrolytes for Advanced Low- and High-Temperature Polymer Electrolyte Membrane Fuel Cells

In the 21st century, proton exchange membrane fuel cells (PEMFCs) represent a promising source of power generation due to their high efficiency compared with coal combustion engines and eco-friendly design. Proton exchange membranes (PEMs), being the critical component of PEMFCs, determine their overall performance. Perfluorosulfonic acid (PFSA) based Nafion and nonfluorinated-based polybenzimidazole (PBI) membranes are commonly used for low- and high-temperature PEMFCs, respectively. However, these membranes have some drawbacks such as high cost, fuel crossover, and reduction in proton conductivity at high temperatures for commercialization. Here, we report the requirements of functional properties of PEMs for PEMFCs, the proton conduction mechanism, and the challenges which hinder their commercial adaptation. Recent research efforts have been focused on the modifications of PEMs by composite materials to overcome their drawbacks such as stability and proton conductivity. We discuss some current developments in membranes for PEMFCs with special emphasis on hybrid membranes based on Nafion, PBI, and other nonfluorinated proton conducting membranes prepared through the incorporation of different inorganic, organic, and hybrid fillers.

Improving stability of high temperature polymer electrolyte membrane fuel cell using Nb4N5/C composite support

The stability of support materials is crucial for the application of high temperature polymer electrolyte membrane fuel cells (HT-PEMFCs), and the corrosion of conventional carbon support poses a significant challenge. In this study, a new type of composite support material, carbon composite niobium nitride (Nb4N5/C) was developed and investigated. Physical characterization demonstrated that Nb4N5 has a unique micro-flower morphology with a large specific surface area, making it an ideal support for Pt nanoparticles. X-ray photoelectron spectroscopy (XPS) analysis revealed that the addition of Nb4N5 reduced the displacement of d-band center of Pt and weakened the bonding between adsorbed oxygen and Pt. The Pt/Nb4N5/C-based catalyst demonstrated better stability than Pt/C after undergoing an accelerated durability test (ADT) of 5000 cycles, indicating the effectiveness of introducing this transition metal nitrides (TMNs) to enhance catalyst stability. Moreover, in the single-cell test at high temperature, the HT-PEMFC based on the Pt/Nb4N5/C catalyst exhibited an impressive peak power density of 520.48 mW cm−2 at 150 °C. After the durability test, it only suffered a decrease of 5.2%, which is more stable than the commercial Pt/C (11.7%), suggesting it is promising candidate for practical HT-PEMFC applications.

Experimental Analysis of Catalyst Layer Operation in a High-Temperature Proton Exchange Membrane Fuel Cell by Electrochemical Impedance Spectroscopy

High-temperature proton exchange membrane fuel cells (HT-PEMFC) directly convert hydrogen and oxygen to produce electric power at a temperature significantly higher than conventional low-temperature fuel cells. This achievement is due to the use of a phosphoric acid-doped polybenzimidazole membrane that can safely operate up to 200 °C. PBI-based HT-PEMFCs suffer severe performance limitations, despite the expectation that a higher operating temperature should positively impact both fuel cell efficiency and power density, e.g., improved ORR electrocatalyst activity or absence of liquid water flooding. These limitations must be overcome to comply with the requirements in mobility and stationary applications. In this work a systematic analysis of an HT-PEMFC is performed by means of electrochemical impedance spectroscopy (EIS), aiming to individuate the contributions of components, isolate physical phenomena, and understand the role of the operating conditions. The EIS analysis indicates that increases in both the charge transfer and mass transport impedances in the spectrum are negatively impacted by air humidification and consistently introduce a loss in performance. These findings suggest that water vapor reduces phosphoric acid density, which in turn leads to liquid flooding of the catalyst layers and increases the poisoning of the electrocatalyst by phosphoric acid anions, thus hindering performance.

Design and analysis of a hybrid space heating system based on HT-PEM fuel cell and an air source heat pump with a novel heat recovery strategy

This work analyzes the performance of a system integrating high temperature proton exchange membrane fuel cell (HT-PEMFC) and air source heat pump (ASHP) technologies for residential space heating. The main goal is to improve energy conversion efficiency for a residential building in the Canadian climate, in which methane is normally used to feed traditional systems (e.g., boilers and/or furnaces), due to its considerable local availability. On the other hand, ASHP technology is characterized by high efficiency, but normally fails to perform well in cold climates, due to the reduction of the coefficient of performance (COP) and ice formation on the evaporator. Due to the higher attention paid to low temperature PEMFC system (LT-PEMFCS) till now, it is here investigated if significant improvements can be obtained with a higher temperature PEMFCS, by thus fully exploiting the higher quantity and better quality of recoverable waste heat compared to LT-PEMFCSs, particularly aiming at mitigating the afore-mentioned low-temperature related issues. A mathematical model for the system components is proposed to perform parametric analyses aimed at assessing the variation of efficiency as a function of both environmental and load conditions. The results show that the ASHP COP increases by more than 77% when the HT-PEMFCS works at its nominal (5.3 kW) power and/or inlet air has a high relative humidity (RH), i.e., close to 100%. The proposed HT-PEMFC system configuration was able to reach a total COP higher than 1.5, leading to a reduction of the needed primary energy needed and a consequent reduction of the operating costs by up to 60% compared to boilers.

Gel-state polybenzimidazole proton exchange membranes with flexible alkyl sulfonic acid side chains for a wider operating temperature range (25–240 °C)

High-temperature proton exchange membrane fuel cells (HT-PEMFC) possess distinct technical advantages of high output power, simplified water/heat management, increased tolerance to fuel impurities and diverse fuel sources, within the temperature range of 120–200 °C. However, for practical automobile applications, it was crucial to broaden their low-temperature operating window and enable cold start-up capability. Herein, gel-state phosphoric acid (PA) doped sulfonated polybenzimidazole (PBI) proton exchange membranes (PEMs) were designed and synthesized via PPA sol-gel process and in-situ sultone ring-opening reactions with various proton transport pathways based on absorbed PA, flexible alkyl chain connected sulfonic acid groups and imidazole sites. The effects of flexible alkyl sulfonic acid side chain length and content on PA doping level, proton conductivity, and membrane stability under different temperature and relative humidity (RH) were thoroughly investigated. The prepared gel-state membranes contained a self-assembled lamellar and porous structure that facilitated the absorption of a large amount of PA with rapid proton transporting mechanisms. At room temperature, the optimized membrane exhibited a proton conductivity of 0.069 S cm−1, which was further increased to 0.162 and 0.358 S cm−1 at 80 and 200 °C, respectively, without additional humidification. The most significant contribution of this work was demonstrating the feasibility of gel-state sulfonated PBI membranes in expanding HT-PEMFC application opportunities over a wider operating range of 25 to 240 °C.

Usage of Methanol Fuel Cells to Reduce Power Outages in the Etelä-Savo Region, Finland

The operation of the electricity grid can be heavily affected by unexpected meteorological phenomena which generate emergency situations that cause extensive outages. This often has to do with weather-related events. In several places in the world, an electricity network operator is responsible for fairly compensating end-users. In Finland, there are areas where these weather-related impacts are significantly harsher than those in other areas. Based on this and historic data, the applicability and viability of a high-temperature proton-exchange membrane fuel cell (HT-PEMFC) backup power system was studied in order to assess the opportunity for its installation in the affected municipalities and regions. When implemented on a larger scale, from both technoeconomic and social perspectives, such systems have the potential to yield significant benefits. Compared to a diesel generator, the HT-PEMFC produced nearly half of the volume of CO2 and its fuel costs were six times smaller; however, it remains inapplicable to individual detached households.

Analysis and comparison of innovative PEMFC systems coupled with an ASHP for space heating in cold climates

In this study, two integrated systems are proposed and analysed: an air source heat pump (ASHP) coupled with either high-temperature proton exchange membrane fuel cells (HT-PEMFCs) or low-temperature proton exchange membrane fuel cells (LT-PEMFCs), where the exhaust gases from the PEMFCs are used to increase the external air temperature to the evaporator of the ASHP. The objective is to understand how the proposed systems behave in a cold climate region and determine which of the systems is better to couple with an ASHP for domestic space heating purposes in a cold climate. The novelty of the work lies in the idea of recovering heat from the exhaust gases from the fuel reformer and PEMFCs and mixing them with external air, before sending it to the ASHP as the inlet air. Grey-box models are employed to model the PEMFCs, whereas the hypothesis of the chemical equilibrium of reacting species is considered in the reformer model. Steady state analyses are considered to understand the performances of the proposed systems compared to two different types of furnaces: high-efficiency and mid-efficiency ones. The results indicate that the HT-PEMFCs are the best for the case studied here, with performances up to 100% greater than the mid-efficiency furnace and up to 63% more than the high-efficiency one. A scenario analysis on a simple pay back is also carried out, and the return on the investment costs in the 2024 scenario is about 24 years if compared to the high efficiency furnace and 14 if compared to the mid-efficiency one, whereas the corresponding numbers are 19 and 11 years, respectively, for the 2030 scenario.

Excellent high-temperature proton exchange membrane fuel cell derived from a triptycene-based polybenzimidazole with low N–H density and high phosphate tolerance

Phosphoric species' toxicity to Pt catalyst has shown a significant impact on the kinetics of the oxygen reduction reaction (ORR) in high-temperature proton exchange membrane fuel cells (HT-PEMFCs), which hinders the technology's commercial potential. Herein, a novel triptycene-based polybenzimidazole (Trip-PBI) was obtained for the first time, and employed as a PEM or binder material for HT-PEMFC. The Trip-PBI membrane outperformed the m-PBI membrane in terms of oxygen permeability at 150 °C (18.6 vs 3.7 Barrer), and the gas diffusion electrodes (GDE) using Trip-PBI as a binder displayed moderate hydrophilicity (PA contact angle: 28°). This successfully addresses the issues of gas transfer restriction and excessive PA diffusion in the PEM to the catalysis layer. As a result, at 160 °C, the MEA using Trip-PBI as the binder exhibits the maximum PPD of 700 mW/cm2, which is 1.84 times that of m-PBI and 1.36 times that of PTFE. Moreover, the H2/O2 cell using Trip-PBI binder also exhibits good stability for 100 h at 160 °C with 0.3 A/cm2 current density.

Self-Phosphorylated Polybenzimidazole: An Environmentally Friendly and Economical Approach for Hydrogen/Air High-Temperature Polymer-Electrolyte Membrane Fuel Cells.

The development of phosphorylated polybenzimidazoles (PBI) for high-temperature polymer-electrolyte membrane (HT-PEM) fuel cells is a challenge and can lead to a significant increase in the efficiency and long-term operability of fuel cells of this type. In this work, high molecular weight film-forming pre-polymers based on N1,N5-bis(3-methoxyphenyl)-1,2,4,5-benzenetetramine and [1,1'-biphenyl]-4,4'-dicarbonyl dichloride were obtained by polyamidation at room temperature for the first time. During thermal cyclization at 330-370 °C, such polyamides form N-methoxyphenyl substituted polybenzimidazoles for use as a proton-conducting membrane after doping by phosphoric acid for H2/air HT-PEM fuel cells. During operation in a membrane electrode assembly at 160-180 °C, PBI self-phosphorylation occurs due to the substitution of methoxy-groups. As a result, proton conductivity increases sharply, reaching 100 mS/cm. At the same time, the current-voltage characteristics of the fuel cell significantly exceed the power indicators of the commercial BASF Celtec® P1000 MEA. The achieved peak power is 680 mW/cm2 at 180 °C. The developed approach to the creation of effective self-phosphorylating PBI membranes can significantly reduce their cost and ensure the environmental friendliness of their production.

A Comparative Study of CCM and CCS Membrane Electrode Assemblies for High-Temperature Proton Exchange Membrane Fuel Cells with a CsH5(PO4)2-Doped Polybenzimidazole Membrane.

Membrane electrode assemblies (MEAs) are critical components in influencing the electrochemical performance of high-temperature proton exchange membrane fuel cells (HT-PEMFCs). MEA manufacturing processes are mainly divided into the catalyst-coated membrane (CCM) and the catalyst-coated substrate (CCS) methods. For conventional HT-PEMFCs based on phosphoric acid-doped polybenzimidazole (PBI) membranes, the wetting surface and extreme swelling of the PA-doped PBI membranes make the CCM method difficult to apply to the fabrication of MEAs. In this study, by taking advantage of the dry surface and low swelling of a CsH5(PO4)2-doped PBI membrane, an MEA fabricated by the CCM method was compared with an MEA made by the CCS method. Under each temperature condition, the peak power density of the CCM-MEA was higher than that of the CCS-MEA. Furthermore, under humidified gas conditions, an enhancement in the peak power densities was observed for both MEAs, which was attributed to the increase in the conductivity of the electrolyte membrane. The CCM-MEA exhibited a peak power density of 647 mW cm-2 at 200 °C, which was ~16% higher than that of the CCS-MEA. Electrochemical impedance spectroscopy results showed that the CCM-MEA had lower ohmic resistance, which implied that it had better contact between the membrane and catalyst layer.

Performance investigation of a system hybridizing high-temperature polymer electrolyte membrane fuel cell with intermediate band thermoradiative device

To enhance the efficiency of energy utilization, a novel combined system incorporating a high-temperature polymer electrolyte membrane fuel cell (HT-PEMFC), an intermediate band thermoradiative device (IBTRD), and a regenerator is established, where the IBTRD can efficiently exploit the exhaust heat from HT-PEMFC to produce extra power. Based on electrochemistry, semiconductor theory, and the non-equilibrium thermodynamics the mathematical expressions for power density and energy conversion efficiency (ECE) for the integrated device are gained. Meanwhile, considering the multiple irreversible losses, the relationship between the IBTRD voltage and the HT-PEMFC operating current is obtained, and the optimal working regions for key parameters about the presented model are identified. The numerical results demonstrate that the combined model's maximum power density (MPD) and its corresponding energy conversion efficiency are 0.49 W/cm2 and 24.57%, which are respectively 25.61% and 27.52% bigger than those of the single HT-PEMFC. Additionally, it is revealed how vital parameters affect the performance characteristics of the combined model, including the doping level, operating temperature, relative humidity, operating pressure, and the bandgap of IBTRD. The conclusion indicates that an enhancement in MPD from 0.428 W/cm2 to 0.538 W/cm2 and an increase in ECE from 0.224% to 0.255% as the temperature enhances from 423 K to 463 K. The outcomes acquired may be valuable for the design and development of such a true combination system.

Numerical investigation of enhanced mass transfer flow field on performance improvement of high‐temperature proton exchange membrane fuel cell

AbstractThe enhanced mass transfer flow fields have been proven to be an effective measure to improve the cell performance of low‐temperature proton exchange membrane fuel cells, yet little research has been done for high‐temperature proton exchange membrane fuel cells (HT‐PEMFC). In this work, three types of cathode‐enhanced mass transfer flow fields (tapered, staggered‐blocked, and blocked) are designed. The effects of various flow fields on the reactant delivery, current density distribution uniformity, and net power output of HT‐PEMFC are quantitatively investigated and compared. It is found that the three enhanced mass transfer flow fields can effectively increase the performance of HT‐PEMFC by transforming the traditional diffusion into a combination of diffusion and forced convection. In the sight of the superior performance and lower flow resistance, the tapered flow field is thought to be the optimal candidate for HT‐PEMFC among the four flow fields, with a 12.21% net power increment and 5.32% current density distribution uniformity improvement at 1.4 A/cm2 compared to the conventional flow field. These results support further performance enhancements and applications of HT‐PEMFC.