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30-01-2009, 03:49 PM
Post: #1
ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
In the future, predominantly solar or wind power systems will likely require energy storage for days to approximately a week, with or without connections to the 2 electric grid. If so, conversion of electricity to chemical energy is potentially attractive, since chemicals are inexpensive to store and turnaround efficiency is less critical for storage periods of a week or more. The most attractive chemical for this process is likely to be hydrogen (H2) generated locally by electrolysis of water using intermittent excess solar or wind power. Later, when combined with air or oxygen (O2) in engines or fuel cells, H2 can regenerate electricity on demand. Although H2 electricity storage is less energy efficient (40-50%) than compressed air storage, H2 has far lower costs of storage capacity, since H2 is a chemical fuel and air is not. For example, a 250-liter pressure vessel designed to store 10-20 kWh of compressed air could store enough H2 to provide 150-300 kWh of electricity, reducing the cost of storage capacity by more than a factor of 10. H2 energy storage is therefore economically best suited to situations where the total amount of energy stored is more valuable than efficiency. This should be the case for electricity stored longer than 1-2 days. H2 may also be stored cheaply without high pressure as a very low temperature (-453 oF) liquid (LH2) or by absorption in powders of abundant metals (e.g. iron, titanium, aluminum, and sodium) that release H2 upon moderate heating (<200 oF).

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15-09-2009, 11:50 AM
Post: #2
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
please give the full details of Electrolytic Hydrogen: A Future Technology for Energy Storage
15-09-2009, 01:42 PM
Post: #3
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG

.pdf  ELECTROLYTIC HYDROGEN A FUTURE TECHNOLOGY FOR ENERGY STORAG.pdf (Size: 160.08 KB / Downloads: 1639)

renewable energy technologies concept requires the integration of two sub-systems or components.
The first is a hydrogen/bromine regenerative electrochemical cell that is well-suited for energy
storage applications such as peak shaving, load management and other emerging distributed utility
applications. regenerative hydrogen/bromine cell facilitates electrical energy storage by
consuming electricity in electrolyzing hydrogen bromide into hydrogen and bromine reactants as
stored chemical energy. The hydrogen and bromine are later reacted electrochemically in the cell to
produce electrical energy. Hence, the cell is regenerative (reversible), in that it can efficiently
operate as an electrolysis cell producing reactants and consuming electricity or as a fuel cell
consuming reactants and producing electricity. In effect, the cell operates as a battery, exchanging
electrical and chemical energy, with one difference: the reactants are stored outside of the cell as
opposed to a battery where the reactants are inside. Therefore, to increase capacity (kWh) it is only
necessary to add more reactants rather than more batteries.
This electrochemical cell technology
to reduce the nations dependence on oil-fueled power generation. Technologies has developed an industrial-scale, brominebased
regenerative cell for electric utility energy storage. The Innogy cell has been designed for
high-volume, low-cost manufacturing and will be adapted for service in the system.
The second component is a chemical reactor that thermochemically produces hydrogen bromide
(HBr) and carbon dioxide (CO2) from water (H2O), natural gas (CH4) and bromine (Br2). The
regenerative cell and chemical reactor integrated in a system produces hydrogen and stores
electrical energy.

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20-02-2011, 05:16 PM
Post: #4
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
hi sir,
can you give the pdf ,ppt....of {[re: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG}.........
please i beg you..........
please give me more info on this topic {electrolytic hydrogten}
28-02-2011, 04:40 PM
Post: #5
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
hello..this seminar topic seems very interesting...pls mail the whole topic to my email id meghahemmige[at]yahoo.co.in
11-03-2011, 05:42 PM
Post: #6
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
pls send all detail and ppt,pdf files to my id
12-03-2011, 08:52 PM
Post: #7
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
please send ppt and pdf
07-04-2011, 07:05 PM
Post: #8
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
Electrolytic Hydrogen: A Future Technology for Energy Storage
21-04-2011, 03:57 PM
Post: #9
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
hi
you can see these pages to get the details on Electrolytic Hydrogen: A Future Technology for Energy Storage


http://www.seminarprojects.com/attachment.php?aid=80

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29-12-2011, 09:46 AM
Post: #10
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
hello..this seminar topic seems very interesting...pls mail the whole topic with ppt
to my email id biswajeetchand71[at]gmail.com
15-01-2012, 07:02 PM
Post: #11
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
can u giv more info on above topic?? v ve to present seminar on electrical related topics.
16-01-2012, 09:56 AM
Post: #12
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
hi
you can see these pages to get the details on Electrolytic Hydrogen: A Future Technology for Energy Storage


http://www.seminarprojects.com/attachment.php?aid=80

http://www.seminarprojects.com/Thread-el...rgy-storag
16-02-2012, 10:29 AM
Post: #13
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
to get information about the topic ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG related topic refer the link bellow

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05-04-2012, 02:15 AM
Post: #14
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
pls send me a ppt on electrolytic hydrogen:a future technollogy for energy storage
30-03-2016, 01:03 AM
Post: #15
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
please help to know more about this topic thoroughly
08-04-2016, 11:41 AM
Post: #16
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
To get information about the topic “ELECTROLYTIC HYDROGEN” full report ppt and related topic refer the link below


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19-07-2016, 04:33 PM
Post: #17
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
ELECTROLYTIC HYDROGEN PRODUCTION
Electrolysis of water produces high purity hydrogen directly, with no need for additional clean up. High temperature steam electrolysis, where a portion of the required energy can be supplied as thermal energy, is more efficient than low temperature water electrolysis.

A high temperature electrolysis system will produce about 40% more hydrogen from a given energy input than a conventional water electrolysis system.

High temperature solid oxide fuel cells can be operated in a reverse mode to electrolyze steam to generate hydrogen.

With two decades of fuel cell experience, Ceramatec has worked on high temperature Solid Oxide Electrolysis Cells (SOEC) since 2003. A 4-kW steam electrolyzer stack module was operated for more than 2000 hours, and a 17-kW steam electrolyzer was demonstrated at the Idaho National Laboratory using stacks fabricated at Ceramatec.

Applications

Refineries for oil upgrading
Ammonia and other chemicals synthesis
Energy Storage

Hydrogen’s ability to combine with oxygen was first noted by Henry Cavendish in 1766. The first electrolyzer subsequently appeared in 1800 when Nicolson and Carlisle induced a static charge into water. More than 200 years later Hydrogenics continues to evolve and improve on these fundamental discoveries.
Electrolysis cells are characterized by their electrolyte type. There are two types of low temperature electrolysis where Hydrogenics is active: Alkaline and Proton Exchange Membrane (PEM).
Thanks to decades of research and development in both technologies, Hydrogenics has the unique capability to offer PEM and Alkaline systems and to select the most appropriate one based on the cost, capacity and use of it.
Both Alkaline and PEM technologies have the ability to deliver:
On site and on demand hydrogen (load following)
Pressurized hydrogen without a compressor
99.999% pure, dry and carbon-free hydrogen
In alkaline electrolysis the reaction occurs in a solution composed of water and liquid electrolyte (30% KOH) between two electrodes. When a sufficient voltage is applied between the two electrodes, at the cathode water molecules take electrons to make OH⁻ ions and H2 molecule. OH⁻ ions travel through the 30% KOH electrolyte towards the anode where they combine and give up their extra electrons to make water, electrons, and O2.

Recombination of Hydrogen and Oxygen at this stage is avoided by means of the highly efficient and patented IMET® ion-exchange membrane. Our IMET® membrane is made of highly resistant inorganic materials and does not contain any asbestos. The electrolyte remains in the system due to a clever and pump-free closed-loop recirculation system.

Hydrogenics’ HySTAT® electrolysers are installed at hundreds of industrial plants, power stations, energy storage facilities and fueling stations around the world. They are safe and reliable systems used by all major industrial gas suppliers in heavy-duty applications.
A PEM electrolyser uses an ionically conductive solid polymer. When potential difference (voltage) is applied between the two electrodes, negatively charged Oxygen in the water molecules give up their electron at the anode to make protons, electrons, and O2 at the anode. The H+ ions travel through the proton conducting polymer towards the cathode where they take an electron and become neutral H atoms which combine to make H2 at the cathode. The electrolyte and two electrodes are sandwiched between two bipolar plates. The role of bipolar plate is to transport water to the plates, transport product gases away from the cell, conduct electricity, and circulate a coolant fluid to cool down the process.
Same as fuel cells, many electrolyser single cells may be connected in series to make the core component of an electrolyser system, the cell stack, where both Hydrogen and Oxygen are produced.
Cell Stack
Some cooling will be required to cool down the process and produced gas, a water treatment system will be installed in order to produce demineralized water from the supplied tap water, a purification system will clean the hydrogen to deliver high purity gas according to the customer’s specifications, a power rack will be installed to manage the power needed for the reaction (converting the AC current delivered by the grid into a direct current used for the process) and a control panel will allow the operator to have an overview of the complete package. All these wisely selected and specifically manufactured equipment will then either be installed in a building or packaged in an outdoor housing

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19-07-2016, 04:34 PM
Post: #18
RE: ELECTROLYTIC HYDROGEN : A FUTURE TECHNOLOGY FOR ENERGY STORAG
Abstract

Electrolysis of water is the decomposition of water (H2O) into oxygen (O2) and hydrogen gas (H2) due to an electric current being passed through the water. The reaction has a standard potential of −1.23 V, meaning it ideally requires a potential difference of 1.23 volts to split water.This technique can be used to make hydrogen fuel (hydrogen gas) and breathable oxygen; though currently most industrial methods make hydrogen fuel from natural gas instead.
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