High activity and durability of a Pt–Cu–Co ternary alloy electrocatalyst and its large-scale preparation for practical proton exchange membrane fuel cells

2021 ◽  
pp. 109082
Author(s):  
Bin Hu ◽  
Jinglin Yuan ◽  
Jun Zhang ◽  
Qinghua Shu ◽  
Daqin Guan ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Activity ◽  
Ternary Alloy ◽  
Large Scale ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Large Scale Preparation ◽  
Scale Preparation ◽  
Exchange Membrane

scholarly journals Expert assessments of the cost and expected future performance of proton exchange membrane fuel cells for vehicles

2019 ◽  
Vol 116 (11) ◽  
pp. 4899-4904 ◽  
Author(s):  
Michael M. Whiston ◽  
Inês L. Azevedo ◽  
Shawn Litster ◽  
Kate S. Whitefoot ◽  
Constantine Samaras ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Power Density ◽  
Large Scale ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Expert Elicitation ◽  
Department Of Energy ◽  
Scale Production ◽  
Fuel Cell Performance ◽  
Exchange Membrane

Despite decades of development, proton exchange membrane fuel cells (PEMFCs) still lack wide market acceptance in vehicles. To understand the expected trajectories of PEMFC attributes that influence adoption, we conducted an expert elicitation assessment of the current and expected future cost and performance of automotive PEMFCs. We elicited 39 experts’ assessments of PEMFC system cost, stack durability, and stack power density under a hypothetical, large-scale production scenario. Experts assessed the median 2017 automotive cost to be $75/kW, stack durability to be 4,000 hours, and stack power density to be 2.5 kW/L. However, experts ranged widely in their assessments. Experts’ 2017 best cost assessments ranged from $40 to $500/kW, durability assessments ranged from 1,200 to 12,000 hours, and power density assessments ranged from 0.5 to 4 kW/L. Most respondents expected the 2020 cost to fall short of the 2020 target of the US Department of Energy (DOE). However, most respondents anticipated that the DOE’s ultimate target of $30/kW would be met by 2050 and a power density of 3 kW/L would be achieved by 2035. Fifteen experts thought that the DOE’s ultimate durability target of 8,000 hours would be met by 2050. In general, experts identified high Pt group metal loading as the most significant barrier to reducing cost. Recommended research and development (R&D) funding was allocated to “catalysts and electrodes,” followed in decreasing amount by “fuel cell performance and durability,” “membranes and electrolytes,” and “testing and technical assessment.” Our results could be used to inform public and private R&D decisions and technology roadmaps.

Boosting cell performance with self-supported PtCu nanotube arrays serving as the cathode in a proton exchange membrane fuel cell

2020 ◽  
Vol 4 (7) ◽  
pp. 3640-3646
Author(s):  
Dewei Yao ◽  
Hongmei Yu ◽  
Wei Song ◽  
Xueqiang Gao ◽  
Zhixuan Fan ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Large Scale ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Cell Performance ◽  
Pt Catalyst ◽  
Nanotube Arrays ◽  
Exchange Membrane

The high cost and huge consumption of the Pt catalyst hinder the large-scale commercialization of fuel cells.

Highly proton conductive membranes based on carboxylated cellulose nanofibres and their performance in proton exchange membrane fuel cells

2019 ◽  
Author(s):  
Valentina Guccini ◽  
Annika Carlson ◽  
Shun Yu ◽  
Göran Lindbergh ◽  
Rakel Wreland Lindström ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Surface Charge ◽  
Proton Exchange Membrane ◽  
Membrane Surface ◽  
Proton Exchange ◽  
Membrane Thickness ◽  
Fuel Cell Performance ◽  
Cellulose Nanofibres ◽  
Exchange Membrane

The performance of thin carboxylated cellulose nanofiber-based (CNF) membranes as proton exchange membranes in fuel cells has been measured in-situ as a function of CNF surface charge density (600 and 1550 µmol g<sup>-1</sup>), counterion (H<sup>+</sup>or Na<sup>+</sup>), membrane thickness and fuel cell relative humidity (RH 55 to 95 %). The structural evolution of the membranes as a function of RH as measured by Small Angle X-ray scattering shows that water channels are formed only above 75 % RH. The amount of absorbed water was shown to depend on the membrane surface charge and counter ions (Na<sup>+</sup>or H<sup>+</sup>). The high affinity of CNF for water and the high aspect ratio of the nanofibers, together with a well-defined and homogenous membrane structure, ensures a proton conductivity exceeding 1 mS cm<sup>-1</sup>at 30 °C between 65 and 95 % RH. This is two orders of magnitude larger than previously reported values for cellulose materials and only one order of magnitude lower than Nafion 212. Moreover, the CNF membranes are characterized by a lower hydrogen crossover than Nafion, despite being ≈ 30 % thinner. Thanks to their environmental compatibility and promising fuel cell performance the CNF membranes should be considered for new generation proton exchange membrane fuel cells.<br>

Latest Trends and Challenges In Proton Exchange Membrane Fuel Cell (PEMFC)

2017 ◽  
Vol 10 (1) ◽  
pp. 96-105 ◽  
Author(s):  
Mohammed Jourdani ◽  
Hamid Mounir ◽  
Abdellatif El Marjani
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Total Cost ◽  
Cell Efficiency ◽  
Technical Advances ◽  
Exchange Membrane

Background: During last few years, the proton exchange membrane fuel cells (PEMFCs) underwent a huge development. Method: The different contributions to the design, the material of all components and the efficiencies are analyzed. Result: Many technical advances are introduced to increase the PEMFC fuel cell efficiency and lifetime for transportation, stationary and portable utilization. Conclusion: By the last years, the total cost of this system is decreasing. However, the remaining challenges that need to be overcome mean that it will be several years before full commercialization can take place.This paper gives an overview of the recent advancements in the development of Proton Exchange Membrane Fuel cells and remaining challenges of PEMFC.

scholarly journals ZIF-derived Co–N–C ORR catalyst with high performance in proton exchange membrane fuel cells

2020 ◽  
Vol 30 (6) ◽  
pp. 855-860
Author(s):  
Ruixiang Wang ◽  
Pengyang Zhang ◽  
Yucheng Wang ◽  
Yuesheng Wang ◽  
Karim Zaghib ◽  
...  
Keyword(s):  
Fuel Cells ◽  
High Performance ◽  
Proton Exchange Membrane ◽  
Proton Exchange ◽  
Exchange Membrane
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