Effect of uniformity and surface morphology of Pt nanoparticles to enhance oxygen reduction reaction in polymer electrolyte membrane fuel cells

Lim, Su-yeong; Kim, Sun‐I; Lee, Min Seong; Bak, Su-Jeong; Lee, Duck Hyun; Kwon, Se‐Hun; Kim, Taehyo

doi:10.1016/j.ijhydene.2022.06.264

Cited by 11 publications

(2 citation statements)

References 41 publications

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“…The ECM containing R s , R ct , C dl , and Z w gave the best-fitting results to the experimental data. Typically, lower humidity conditions result in higher R s and R ct values , owing to lower proton transport.…”

Section: Resultsmentioning

confidence: 99%

Poly(sulfobetaine methacrylate)-Enhanced Anode Catalyst Layer for Highly Efficient Proton Exchange Membrane Fuel Cells under Low-Humidity Conditions

Son,

Bak,

Kim

et al. 2023

ACS Appl. Energy Mater.

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Proton exchange membrane fuel cells (PEMFCs) that operate under low-humidity conditions enable the downsizing or elimination of humidifiers. Herein, we report a catalyst layer prepared by adding a highly water-retaining and protonconducting sulfobetaine-based zwitterionic polymer, synthesized by precipitation polymerization, to a Pt/C catalyst. The prepared PEMFC exhibits a highly efficient cell performance and high durability at low humidity. The membrane containing the optimal amount of poly(sulfobetaine methacrylate) (pSBMA) has an ionic conductivity of 8.8 mS cm −1 (90%) under controlled conditions at 19% relative humidity (RH). The optimal pSBMA-containing electrode assembly exhibits a current density of 0.59 A cm −2 at 0.6 V and 19% RH, as well as excellent performance stability, retaining 98% of its initial performance after 75 h of durability testing. The findings of this study may provide useful design considerations for fuel-cell systems.

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Section: Resultsmentioning

confidence: 99%

Poly(sulfobetaine methacrylate)-Enhanced Anode Catalyst Layer for Highly Efficient Proton Exchange Membrane Fuel Cells under Low-Humidity Conditions

Son,

Bak,

Kim

et al. 2023

ACS Appl. Energy Mater.

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“…Microwave-induced structural engineering offers a meticulous mechanism for the regulation of the electrocatalyst structure, involving precise adjustments to crystal structure, surface morphology, and pore structure. [74][75][76] This precision in structural control significantly contributes to the augmentation of catalyst activity, generating more effective catalytic sites and ultimately enhancing the efficiency of electrocatalysis. [77] Moreover, this process possesses the capability to modify the electron transport properties of the catalyst, resulting in an increased charge transfer rate.…”

Section: Electrocatalytic Properties Derived From Microwaveinduced St...mentioning

confidence: 99%

Advanced Microwave Strategies Facilitate Structural Engineering for Efficient Electrocatalysis

Li,

Fang,

et al. 2024

ChemSusChem

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In the dynamic realm of energy conversion, the demand for efficient electrocatalysis has surged due to the urgent need to seamlessly integrate renewable energy. Traditional electrocatalyst preparation faces challenges like poor controllability, elevated costs, and stringent operational conditions. The introduction of microwave strategies represents a transformative shift, offering rapid response, high‐temperature energy, and superior controllability. Notably, non‐liquid‐phase advanced microwave technology holds promise for introducing novel models and discoveries compared to traditional liquid‐phase microwave methods. This review examines the nuanced applications of microwave technology in electrocatalyst structural engineering, emphasizing its pivotal role in the energy paradigm and addressing challenges in conventional methods. The ensuing discussion explores the profound impact of advanced microwave strategies on electrocatalyst structural engineering, highlighting discernible advantages in optimizing performance. Various applications of advanced microwave techniques in electrocatalysis are comprehensively discussed, providing a forward‐looking perspective on their untapped potential to propel transformative strides in renewable energy research. It provides a forward‐looking perspective, delving into the untapped potential of microwaves to propel transformative strides in renewable energy research.

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High-performance electrocatalyst for PEMFC cathode: Combination of ultra-small platinum nanoparticles and N-doped carbon support

Paperzh,

Bayan,

Gerasimov

et al. 2024

Carbon Trends

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Effect of uniformity and surface morphology of Pt nanoparticles to enhance oxygen reduction reaction in polymer electrolyte membrane fuel cells

Cited by 11 publications

References 41 publications

Poly(sulfobetaine methacrylate)-Enhanced Anode Catalyst Layer for Highly Efficient Proton Exchange Membrane Fuel Cells under Low-Humidity Conditions

Poly(sulfobetaine methacrylate)-Enhanced Anode Catalyst Layer for Highly Efficient Proton Exchange Membrane Fuel Cells under Low-Humidity Conditions

Advanced Microwave Strategies Facilitate Structural Engineering for Efficient Electrocatalysis

High-performance electrocatalyst for PEMFC cathode: Combination of ultra-small platinum nanoparticles and N-doped carbon support

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