Technology

Solid Oxide Fuel Cell

A solid oxide fuel cell (SOFC) is a highly efficient electrochemical device that converts hydrogen and carbon monoxide from hydrocarbon fuels directly into electricity. Solid Oxide Fuel Cells use dense solid oxide as electrolyte material that conduct negative oxygen ions from cathode to anode.

At anode, electrochemical oxidation of hydrogen (H2) or carbon monoxide (CO) takes place and at cathode oxygen reduction reaction takes place.

They operate at temperatures ranging from 600°C to 1000°C and offer the following key 

Advantages

•  Operate at a higher temperature, do not require precious metal catalyst.

•  
Operate on wide variety of hydrocarbon fuels.

•  Produce the highest electrical efficiency.

•  Most suited for continuous operation.

•  Can use heat recovery technologies for a total system efficiency of
    up to 85 per cent.

•  Near zero emissions and quiet operation, with low maintenance requirements
    compared to existing generation technologies.
They have a wide variety of applications from use as auxiliary in vehicles to stationary power generation.
The higher operating temperature makes them a suitable candidate for application with cogeneration or combined heat and power which further increases the overall efficiency.
Light hydrocarbon fuels such as methane, propane & butane can be internally reformed within the anode and heavier hydrocarbon fuels such as gasoline, diesel, jet fuel or biofuels can be externally reformed.

Solid Oxide Electrolyser Cell

The surplus energy from renewable sources can be effectively stored in the form of chemical energy using our Solid Oxide Electrolyser Cells (SOECs). SOECs are reversible solid oxide fuel cells that use ceramic electrolytes and are also referred to as Regenerative Solid Oxide Fuel Cells (R-SOFCs).
SOECs can be used to produce hydrogen (H2) fuel from water (H2O), syngas fuel (CO+H2) from the mixture of water and carbon di-oxide and oxygen from carbon di-oxide. They operate at high temperatures, typically 600°C to 1000°C to allow electrolysis of water. The high temperature operation reduces the need of electrical energy required for the electrolysis and instead uses heat energy to split water & carbon di-oxide.

Key Features of SOFC as a SOEC:

Compatibility

Environmentally compatible with reduced CO2 emissions in power generation mode.

Flexibility

Fuel flexible and sustainable for integration with other energy sources.

Capability

Useful for different functions.

Adaptability

Suitable for wide variety of applications and adaptable for local energy needs.

Frequently Asked Questions

Q. What can fuel cells power?
In principle, fuel cells could power anything that requires electrical energy to function. This could range from a mobile phone up to a city. Current commercial applications include off-grid power for telecom stations; back-up power for buildings; drives for forklift trucks; residential heat and power; portable generators, recharging devices and electric vehicles. Megawatt-size fuel cell power plants could supply power to industrial plants and cities.
Q. What is the difference between a fuel cell and a battery?
A battery chemically stores and releases electricity, while a fuel cell produces energy through the electrochemical reaction of a fuel and air. A battery will run out of power and require recharging, then disposal. A fuel cell, however, will continue to function and produce power as long as fuel and oxygen are supplied.
Q. What is the h2e® fuel cell system?
The h2e® fuel cell system is a generator that converts gaseous hydrocarbon fuels (e.g. PNG/CNG) into electricity. The process is quieter, more efficient and cleaner than conventional, engine driven generators.
Q. What fuels are used in h2e® fuel cell system?
The h2e® fuel cell system is fuel flexible and can use a variety of fuels such as natural gas, liquefied petroleum gas, methane and hydrogen. Energy from landfills, biomass, coal, wood and agricultural waste can also be used to create the fuel. Because they function on such diverse input, fuel cells are a logical choice to transition from current combustion based technologies to renewable energy sources.
Q. What applications are covered by the h2e® fuel cell system?
The h2e® fuel cell system can be used for stationary application to fulfill the heat and power demands of the Residential, Commercial and Agricultural sectors.
Q. How does the h2e® fuel cell system work?
The h2e® fuel cell system is equipped with a ceramic SOFC, based on patented Fraunhofer technology. Using a process called catalytic partial oxidation, hydrocarbon fuels like PNG, CNG & LPG can be converted into a hydrogen rich fuel gas. This fuel gas is directly converted into electricity in the SOFC fuel cell.
Q. Why does the system use a SOFC fuel cell which is potentially too hot?
The SOFC is the simplest fuel cell technology as it does not require extremely pure fuels such as hydrogen,unlike other fuel cells. It is also the most inexpensive fuel cell, because it does not contain noble metals, e.g. platinum. The active part of the SOFC can be as hot as 830°C. A high-performance ceramic insulation, however, reduces the temperature on the outside to hand-hot. A patented, internal heat-recovery system makes sure that heat losses from the system are reduced to a minimum, which means a low exhaust gas temperature just like on other fuel cells.
Q. Does the system require frequent repair & maintainance?
The h2e® has no moving parts and requires little maintenance. A majority of the system components are maintenance-free and a few components that require maintenance have long maintenance intervals. The h2e® is assembled with DIN modules to reduce the time required for the repair and maintenance.
Q. What are the advantages of the h2e® fuel cell system over other fuel cells?
The h2e® fuel cell system can be operated with PNG, CNG and Biogas, which is conveniently available everywhere around the world. Proprietary cartridges with potentially hazardous fuels are not necessary. At the same time, the system is small and lightweight since there is no need for water management. As the system runs completely without water it can easily be started and operated even during freezing conditions.
Q. Can I buy the h2e® fuel cell system?
Yes. It is possible to purchase a fuel cell as a power source instead of a battery or diesel generator, for instance.
The price of the system will be very competitive in comparison to similar fuel cell systems of the same power range. The cost of fuel, however, will be much lower than with proprietary solutions, as it uses commonly used fuels available almost everywhere at low cost.
Q. What are the plans for the commercial availability of the system?
The h2e® fuel cell system currently undergoing an intensive test and evaluation phase to ensure the best possible user experience. Kindly contact us for more details.

Contact

New York, NY
h2e Power Systems Inc.
1123 Broadway, #301
New York, NY 10010.
Tel : +1 (212) 951-7385
Mail : info@h2epower.net
Pune, INDIA
h2e Power Systems Pvt. Ltd.
20, Sangam Project Phase II,
Wellesley Road, Near RTO office, Pune 411001,
Tel : + 91 (20) 2605-7576
Mail : info@h2epower.net