Molecular engineering of the bio/nano-interface for enzymatic electrocatalysis in fuel cells

2018 ◽  
Vol 2 (12) ◽  
pp. 2555-2566 ◽  
Author(s):  
Alan Le Goff ◽  
Michael Holzinger
Keyword(s):  
Fuel Cells ◽  
Electric Power ◽  
Molecular Engineering ◽  
Chemical Energy ◽  
Large Community ◽  
Sustainable Fuels

The fascinating topic of converting chemical energy into electric power using biological catalysts, called enzymes, and sustainable fuels motivates a large community of scientists to develop enzymatic fuel cells.

scholarly journals Model-Based Evaluation of the Effect of Discharge-Charge on Electric Power Generation of Microbial Fuel Cells

2019 ◽  
Vol 17 (2) ◽  
pp. 100-108
Author(s):  
Aiichiro Fujinaga ◽  
Shogo Taniguchi ◽  
Ryohei Takanami ◽  
Hiroaki Ozaki ◽  
Tsuneharu Tamatani ◽  
...  
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
Electric Power ◽  
Microbial Fuel Cells ◽  
Electric Power Generation ◽  
Model Based

Towards re-electrification of hydrogen obtained from the power-to-gas process by highly efficient H2/O2 polymer electrolyte fuel cells

RSC Advances ◽  
2014 ◽  
Vol 4 (99) ◽  
pp. 56139-56146 ◽  
Author(s):  
Felix N. Büchi ◽  
Marcel Hofer ◽  
Christian Peter ◽  
Urs D. Cabalzar ◽  
Jérôme Bernard ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Energy Storage ◽  
Electric Power ◽  
Polymer Electrolyte ◽  
Water Electrolysis ◽  
Polymer Electrolyte Fuel Cells ◽  
Pure Oxygen ◽  
Electrolysis Process ◽  
Highly Efficient ◽  
Power To Gas

In the power-to-gas process, hydrogen, produced by water electrolysis, is used for storage of excess renewable electric power. Pure oxygen is a byproduct of the electrolysis process. Using pure oxygen as the oxidant in polymer electrolyte fuel cells can increase the efficiency of the power-to-hydrogen-to-power energy storage chain.

Operation of the Siemens SOFC Generators CHP100 and SFC5 in a Mechanical Factory

2008 ◽  
Author(s):  
Vittorio Verda ◽  
Gianmichele Orsello ◽  
Gianni Disegna ◽  
Ferrante Debenedictis
Keyword(s):  
Fuel Cells ◽  
Solid Oxide Fuel Cells ◽  
Electric Power ◽  
Electricity Generation ◽  
Solid Oxide ◽  
Energy Requirements ◽  
Oxide Fuel ◽  
Promising Technology ◽  
Commercial Scale

Solid Oxide Fuel Cells (SOFCs) are a promising technology for distributed electricity generation and cogeneration. Most of the installations of SOFC are small size fuel cells (of the order of decades of watts or few hundred watts) in laboratories. There are very few installations of commercial scale SOFC plants. In this paper the operating results obtained with two SOFC plants are presented. These plants, whose nominal electric power is 100 kW and 5 kW respectively, produce heat and power to contribute to the energy requirements of the Turbocare factory in Torino, Italy.

scholarly journals Kalman Filter-Based Online Identification of the Electric Power Characteristic of Solid Oxide Fuel Cells Aiming at Maximum Power Point Tracking

Algorithms ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 58 ◽  
Author(s):  
Andreas Rauh ◽  
Wiebke Frenkel ◽  
Julia Kersten
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Electric Power ◽  
Maximum Power ◽  
Power Characteristic ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
Stochastic Filter ◽  
Power Point

High-temperature fuel cells are one of the devices currently investigated for an integration into distributed power supply grids. Such distributed grids aim at the simultaneous production of thermal energy and electricity. To maximize the efficiency of fuel cell systems, it is reasonable to track the point of maximum electric power production and to operate the system in close vicinity to this point. However, variations of gas mass flows, especially the concentration of hydrogen contained in the anode gas, as well as variations of the internal temperature distribution in the fuel cell stack module lead to the fact that the maximum power point changes in dependence of the aforementioned phenomena. Therefore, this paper first proposes a real-time capable stochastic filter approach for the local identification of the electric power characteristic of the fuel cell. Second, based on this estimate, a maximum power point tracking procedure is derived. It is based on an iteration procedure under consideration of the estimation accuracy of the stochastic filter and adjusts the fuel cell’s electric current so that optimal operating points are guaranteed. Numerical simulations, based on real measured data gathered at a test rig available at the Chair of Mechatronics at the University of Rostock, Germany, conclude this paper.

Electric Power Generation from Municipal, Food, and Animal Wastewaters Using Microbial Fuel Cells

2010 ◽  
Vol 22 (7-8) ◽  
pp. 832-843 ◽  
Author(s):  
Jeffrey J. Fornero ◽  
Miriam Rosenbaum ◽  
Largus T. Angenent
Keyword(s):  
Power Generation ◽  
Fuel Cells ◽  
Electric Power ◽  
Microbial Fuel Cells ◽  
Electric Power Generation

A New Geometry High Performance Small Power MCFC

2004 ◽  
Vol 1 (1) ◽  
pp. 25-29 ◽  
Author(s):  
Franco Cotana ◽  
Federico Rossi ◽  
Andrea Nicolini
Keyword(s):  
Fuel Cells ◽  
Electric Power ◽  
High Temperatures ◽  
High Performance ◽  
Numerical Code ◽  
Cell Design ◽  
Molten Carbonate ◽  
Small Power ◽  
Molten Carbonate Fuel Cells ◽  
Simulation Results

Molten Carbonate Fuel Cells (MCFC) operate at temperatures ranging from 600 to 700°C; high temperatures allow to obtain low internal losses with large benefits in terms of generated electric power. A new geometry for small sized MCFCs is proposed in this paper. Cell thermofluidodynamic performance has been analyzed through a numerical code. Simulation results verified the suitability of the proposed cell design solutions. A stack consisting of three elementary units has been created in order to experimentally evaluate the proposed cell performance.

scholarly journals Caffeinated Interfaces Enhance Alkaline Hydrogen Electrocatalysis

2020 ◽  
Author(s):  
Saad Intikhab ◽  
Luis Rebollar ◽  
Yawei Li ◽  
Rahul Pai ◽  
Vibha Kalra ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Energy Storage ◽  
Hydrogen Oxidation ◽  
Molecular Engineering ◽  
Energy Storage And Conversion ◽  
Liquid Interfaces ◽  
Potential Cycling ◽  
Alkaline Fuel Cells ◽  
Pt Electrodes ◽  
Solid Liquid

<p>The high Pt loading required for hydrogen oxidation (HOR) and evolution (HER) reactions in alkaline fuel cells and electrolyzers adversely impacts the system cost. Here, we demonstrate the use of caffeine as a ‘double-layer dopant’ to enhance both the HER and HOR of Pt electrodes in base. HER/HOR rates increase by fivefold on Pt(111) and are accelerated on Pt(110), Pt(pc), and Pt/C as well. FTIR spectroscopy confirms that caffeine is adsorbed at the Pt surface, forming a self-limiting film through electrochemical deposition. Caffeine films are stable up to 1.0 V vs. RHE and are readily regenerated through caffeine deposition during load/potential cycling. The findings presented here both identify a potential catalyst additive that can mitigate high Pt loadings in alkaline fuel cells and electrolyzers while opening the door to molecular engineering of solid/liquid interfaces for energy storage and conversion.</p>

Sign in / Sign up

Export Citation Format

Share Document