4.8 Article

High-Temperature Rotating Disk Electrode Study of Platinum Bimetallic Catalysts in Phosphoric Acid

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Energy & Fuels

Protonated phosphonic acid electrodes for high power heavy-duty vehicle fuel cells

Katie H. Lim et al.

Summary: This study demonstrates that the use of protonating phosphonic acid electrodes greatly improves the performance of high-temperature polymer electrolyte membrane fuel cells, achieving higher power density and better durability. This is of great significance for heavy-duty vehicle applications.

NATURE ENERGY (2022)

Article Energy & Fuels

Fuel cells with an operational range of-20 °C to 200 °C enabled by phosphoric acid-doped intrinsically ultramicroporous membranes

Hongying Tang et al.

Summary: Researchers have developed a new type of fuel cell membrane that can operate over a wider temperature range, from -20 to 200 degrees C. This ultramicroporous membrane retains phosphoric acid even under highly humidified conditions and exhibits higher proton conductivity retention compared to conventional membranes. This innovation could simplify heat and water management in fuel cell systems, potentially reducing costs.

NATURE ENERGY (2022)

Review Chemistry, Physical

Capabilities and limitations of rotating disk electrodes versus membrane electrode assemblies in the investigation of electrocatalysts

Timon Lazaridis et al.

Summary: Cost-competitive fuel cells and water electrolysers require efficient electrocatalysts for hydrogen and oxygen reactions. Rotating disk electrodes (RDEs) and membrane electrode assemblies (MEAs) are common tools for assessing electrocatalyst activity and durability. However, RDE technique cannot answer certain scientific questions. Therefore, we advocate for the greater adoption of MEA testing in the early stages of electrocatalyst development.

NATURE CATALYSIS (2022)

Article Chemistry, Physical

High Temperature Polymer Electrolyte Membrane Fuel Cells with High Phosphoric Acid Retention

Katie H. Lim et al.

Summary: This article reports quaternary ammonium-biphosphate ion-pair high-temperature polymer electrolyte membrane fuel cells (HT-PEMFCs) that do not lose phosphoric acids under normal and accelerated stress conditions. Energetics and computational studies show that the proposed ion-pair system has higher interaction energy and allows for containing all phosphoric acids in the membrane electrode assemblies. In addition, polar interactions between the phosphonic acid ionomer and phosphoric acid explain acid retention in the electrodes of the ion-pair HT-PEMFCs.

ACS ENERGY LETTERS (2022)

Review Chemistry, Physical

Nanoscale Design of Pd-Based Electrocatalysts for Oxygen Reduction Reaction Enhancement in Alkaline Media

Ming Zhou et al.

Summary: This review article discusses the mechanisms of oxygen reduction reaction (ORR) of palladium (Pd)-based electrocatalysts in alkaline media and various strategies for designing high-performance Pd-based catalysts. It also provides insights into future challenges and research directions in the rational design and controlled synthesis of Pd-based ORR electrocatalysts.

SMALL STRUCTURES (2022)

Review Nanoscience & Nanotechnology

Challenges in applying highly active Pt-based nanostructured catalysts for oxygen reduction reactions to fuel cell vehicles

Kensaku Kodama et al.

Summary: Progress has been made in the development of Pt-based nanocatalysts for the oxygen reduction reaction over the past 30 years, with some now in commercial production for PEFCs. However, further improvements in catalytic activity are needed. State-of-the-art catalysts have potential to enhance energy conversion efficiencies and reduce platinum usage in PEFCs, but technical challenges remain for their application in fuel cell vehicles, such as high power density, practical durability, and efficiency.

NATURE NANOTECHNOLOGY (2021)

Review Energy & Fuels

New roads and challenges for fuel cells in heavy-duty transportation

David A. Cullen et al.

Summary: The recent release of hydrogen economy roadmaps highlights the need for increased global investment in hydrogen production, storage, infrastructure and utilization. The shift in focus towards heavy-duty vehicle applications for fuel cell technologies is discussed, along with the required improvements in fuel cell systems and materials to meet efficiency and durability requirements. The article also summarizes the latest market outlooks and targets for heavy-duty vehicle applications.

NATURE ENERGY (2021)

Review Chemistry, Physical

Proton conductors for heavy-duty vehicle fuel cells

Craig S. Gittleman et al.

Summary: In the short term, stability of proton exchange membranes must be ensured, achieving stable conductivity of proton conductors under hot and dynamic conditions is desirable in the mid-term, and in the long term, high thermal stability and water tolerance are targeted to enable the utilization of high energy density liquid fuels.
Article Chemistry, Physical

Impact of catalyst layer morphology on the operation of high temperature PEM fuel cells

N. Bevilacqua et al.

Summary: The study utilized electrochemical impedance spectroscopy and distribution of relaxation times method to analyze polarization losses in fuel cells, finding that mass transport has a significant impact on fuel cell performance. Differences in performance between various catalysts are mainly influenced by mass transport and reaction resistance.

JOURNAL OF POWER SOURCES ADVANCES (2021)

Article Chemistry, Physical

Durable High Polymer Content m/p-Polybenzimidazole Membranes for Extended Lifetime Electrochemical Devices

Andrew T. Pingitore et al.

ACS APPLIED ENERGY MATERIALS (2019)

Article Chemistry, Physical

The Priority and Challenge of High-Power Performance of Low-Platinum Proton-Exchange Membrane Fuel Cells

Anusorn Kongkanand et al.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2016)

Article Chemistry, Physical

Performance of advanced automotive fuel cell systems with heat rejection constraint

R. K. Ahluwalia et al.

JOURNAL OF POWER SOURCES (2016)

Editorial Material Multidisciplinary Sciences

Starving the enemy

Peter N. Dodds et al.

SCIENCE (2016)

Article Electrochemistry

Electrochemistry of Phosphorous and Hypophosphorous Acid on a Pt electrode

M. Prokop et al.

ELECTROCHIMICA ACTA (2015)

Article Chemistry, Physical

Effect of Temperature and Pressure on the Kinetics of the Oxygen Reduction Reaction

Edmund C. M. Tse et al.

JOURNAL OF PHYSICAL CHEMISTRY A (2015)

Article Chemistry, Physical

Phosphate-Tolerant Oxygen Reduction Catalysts

Qing Li et al.

ACS CATALYSIS (2014)

Article Electrochemistry

Elementary Mechanisms in Electrocatalysis: Revisiting the ORR Tafel Slope

Adam Holewinski et al.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2012)

Article Chemistry, Physical

Redistribution of phosphoric acid in membrane electrode assemblies for high-temperature polymer electrolyte fuel cells

Chtistoph Wannek et al.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2009)

Review Chemistry, Physical

A review of polymer electrolyte membranes for direct methanol fuel cells

Vladimir Neburchilov et al.

JOURNAL OF POWER SOURCES (2007)

Article Chemistry, Physical

Origin of the overpotential for oxygen reduction at a fuel-cell cathode

JK Norskov et al.

JOURNAL OF PHYSICAL CHEMISTRY B (2004)

Article Electrochemistry

The CO poisoning effect in PEMFCs operational at temperatures up to 200 degrees C

QF Li et al.

JOURNAL OF THE ELECTROCHEMICAL SOCIETY (2003)