Internal Polymer Electrolyte Membrane Fuel Cell/Energy Storage Hybrid Power Systems

2019 ◽  
Vol 1 (32) ◽  
pp. 31-41
Author(s):  
Chunsheng Wang ◽  
Steven R. D'Souza ◽  
Jianxin Ma
Keyword(s):  
Energy Storage ◽  
Fuel Cell ◽  
Power Systems ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Hybrid Power Systems ◽  
Electrolyte Membrane ◽  
Hybrid Power ◽  
Cell Energy

Continous Operation of Polymer Electrolyte Membrane Regenerative Fuel Cell System for Energy Storage

2006 ◽  
Vol 4 (4) ◽  
pp. 497-500 ◽  
Author(s):  
Bei-jiann Chang ◽  
Christopher P. Garcia ◽  
Donald W. Johnson ◽  
David J. Bents ◽  
Vincent J. Scullin ◽  
...  
Keyword(s):  
Energy Storage ◽  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
Electrical Power ◽  
Cell System ◽  
Fuel Cell System ◽  
Electrolyte Membrane ◽  
Regenerative Fuel Cell ◽  
Smooth Transitions

NASA Glenn Research Center (GRC) has recently demonstrated a polymer electrolyte membrane (PEM) based regenerative fuel cell system (RFCS) that operated for five contiguous back-to-back 24h charge/discharge cycles over a period of 120h. The system operated continuously at full rated power with no significant reactant loss, breakdowns, or degradations from June 26 through July 1, 2005. It demonstrated a closed-loop solar energy storage system over repeated day/night cycles that absorbed solar electrical power profiles of 0–15kWe and stored the energy as pressurized hydrogen and oxygen gas in charge mode, then delivered steady 4.5–5kWe electrical power with product water during discharge mode. Fuel cell efficiency, electrolyzer efficiency, as well as system round-trip efficiency were determined. Individual cell performance and the spread of cell voltages within the electrochemical stacks were documented. The amount of waste heat dissipated from the RFCS was also reported. The RFCS demonstrated fully closed-cycle operation without venting or purging, thereby conserving reactant masses involved in the electrochemical processes. Smooth transitions between the fuel cell mode and electrolyzer mode were repeatedly accomplished. The RFCS is applicable to NASA’s lunar and planetary surface solar power needs, providing lightweight energy storage for any multikilowatt-electrical application, where an environmentally sealed system is required.

scholarly journals Self-assembled network polymer electrolyte membranes for application in fuel cells at 250℃

2021 ◽  
Author(s):  
Seungju Lee ◽  
YoungSuk Jo ◽  
Son-Jong Hwang ◽  
Yongha Park ◽  
Yeong Cheon Kim ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Power Systems ◽  
Polymer Electrolyte ◽  
Polymer Electrolyte Membrane ◽  
High Energy ◽  
Pem Fuel Cells ◽  
Energy Storage And Conversion ◽  
Electrolyte Membrane ◽  
Self Assembled

Abstract Modern H2-based energy storage and conversion devices require a polymer electrolyte membrane (PEM) fuel cell–based integrated power system with synergistic heat integration. The key issue in integrated power systems is developing a PEM that can operate at 200–300 °C. However, currently used phosphoric-acid-based high-temperature PEM fuel cells limited stability at higher operating temperatures. Herein, we introduce a cerium hydrogen phosphate (CeHP) PEM that conducts protons above 200 °C through a self-assembled network (SAN). The SAN-CeHP-PBI reached maximum power densities of 2.4 W cm-2 and operate stably for over 7000 minute without any voltage decay at 250 ℃ under H2/O2 and anhydrous conditions. The developed fuel cell can be combined with an external hydrogen generator that uses a liquid hydrogen carrier such as N-ethylcarbazole and methanol as fuel, thus achieving a high energy efficiency. The thermal stability and fuel flexibility of these SAN-CeHP-PBI demonstrate potential for commercial applications.

scholarly journals Review of the Durability of Polymer Electrolyte Membrane Fuel Cell in Long-Term Operation: Main Influencing Parameters and Testing Protocols

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 4048
Author(s):  
Huu Linh Nguyen ◽  
Jeasu Han ◽  
Xuan Linh Nguyen ◽  
Sangseok Yu ◽  
Young-Mo Goo ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Polymer Electrolyte ◽  
Failure Modes ◽  
Polymer Electrolyte Membrane ◽  
Durability Test ◽  
Term Operation ◽  
Electrolyte Membrane ◽  
Transportation Applications ◽  
Testing Protocols

Durability is the most pressing issue preventing the efficient commercialization of polymer electrolyte membrane fuel cell (PEMFC) stationary and transportation applications. A big barrier to overcoming the durability limitations is gaining a better understanding of failure modes for user profiles. In addition, durability test protocols for determining the lifetime of PEMFCs are important factors in the development of the technology. These methods are designed to gather enough data about the cell/stack to understand its efficiency and durability without causing it to fail. They also provide some indication of the cell/stack’s age in terms of changes in performance over time. Based on a study of the literature, the fundamental factors influencing PEMFC long-term durability and the durability test protocols for both PEMFC stationary and transportation applications were discussed and outlined in depth in this review. This brief analysis should provide engineers and researchers with a fast overview as well as a useful toolbox for investigating PEMFC durability issues.

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