VINATech has developed and produced fuel cell materials of Catalyst Support, Pt Catalyst, and Membrane Electrode Assembly(MEA) and is engaged in Hydrogen Fuel Cell business with its own mass production line and R&D team to serve major customers worldwide.

VINATech Membrane Electrode Assembly(MEA) will be ideally suited for Polymer Electrolyte Membrane Fuel Cell(PEMFC) and Direct Methanol Fuel Cell(DMFC). MEA for PEMFC is used for Transportation of Automotives and portable fuel cell, Stationary such as households and building system and drone.

According to each application, VINATech fuel cell materials show less performance deterioration compared to commercial products after Accelerated Stress Test(AST), since VINATech fuel cell materials are verified with less carbon corrosion. VINATech fuel cell materials performance indicates the excellence and high durability of anti-corrosion under the conditions such as temperature, humidity and pressure according to each application. 

Learn more about VINATech Fuel Cell Materials Specification(Link) 

VPC is a hybrid lithium capacitor, developed by the VINATech own research and development engineers. 

VPC's part number starts with VEL, and its datasheet on our web site(Link) 

VINATech product research and development engineers are working hard to provide you wider product range to better serve our customers with world best energy solution technologies.

If you are still wondering what can be the most suitable device for you? Contact vina@vinatech.com now. 

DC ESR(Rd) is calculated by voltage drop (ΔV) which is measured by the period of time from discharge start to 10 milliseconds later. The discharge current(A) for test and measurement, 40 x Capacitance(F) x Rated Voltage(VR) would be recommended. AC Equivalent Series Resistance (ESR) is measured by 4-probe impedance analyzer. Condition : Potentiostat mode, AC amplitude : 5mV, Frequency : 1㎑
Supercapacitor capacitance measurement is as followed. 

Fuel Cells are a growing source of environmentally friendly energy generation and VINATech is a leader in the development of this emerging technology. VINATech explains in the blog how to make  VINATech MEA (Membrane Electrode Assembly) for PEMFC(Polymer Electrolyte Membrane Fuel Cell) and for DMFC (Direct Methanol Fuel Cell Membrane Electrode Assembly). 

Please check this out the video of an electric rocket, made with VINATech's Hy-Cap supercapacitor, that is, Ultracapacitor, electric double layer capacitor(EDLC). Thanks to Mr. Tom Stanton, he agreed to post it on VINATech websites.
Before the project, he thought the supercapacitor was more like future technology related with fast charging electric vehicles(EV). However, after he made supercapacitor rocket by himself with VINATech 3V supercapacitor, he found out that it has more energy density than the regular capacitor, and you can find it in the video between 01:30~02:00. 12:10 can see how fast for charging supercapacitor and 12:30 Hy-Cap supercapacitor Rocket is soaring up in the air successfully. 

YouTube : https://www.youtube.com/watch?v=vWgwYBDSHGo 

Hy-Cap Anti Wetting Solution

The NEO series has been developed by VINATech’s R&D team.
 
What is ‘Wetting’?
‘Wetting’ is a phenomenon found when a Radial type EDLC (or Coin type) is used in extreme conditions, normally above the recommended +65c and linked with high humidity, normally found in Equatorial countries, rain forests etc. or in plain high temperatures near coast lines and some factory environments too.
The observation is a black sticky substance on the (-) pin, this in fact is a strong Alkali which corrodes the pin and rubber then erodes the PCB track causing equipment failure. Often the EDLC continues to work.

Why does it leak? We have studied this in depth and understand it is caused by an internal chemical reaction when additional H2O meets the Electrode and Electrolyte. It doesn’t effect the SNAP IN types
VINATech and some major customers have tested the NEO products at +65℃ & 90% RH and, after 12 months of accelerated test, have not seen any sign of wetting.
 
What is ‘Leakage’?
 ‘Leakage’ is a phenomenon that the electrolyte (Salt + Solvent) is emitted out through (+/-) lead hole or rim of Al can, then only salt which looks white remains dried. It is mainly caused by the abnormality of sealing.
Basically ‘Leakage’ phenomenon is different with ‘Wetting’,  because the root cause is totally different. 

Does it affect all EDLCs?
So far we have evidence it affects all EDLCs but mainly 2.7V series. As yet we haven’t seen “wetting” from our 3V customers, but it could be possible.
It affects all Industry sectors from HVAC to PCs, UPS, Automotive , Tracking , Building controls and AMR(Smartmeter).

Does it effect our competitors?
Yes. We have tested all our competitors 2.7V products and at some stage, some earlier than others, their products do fail

How is NEO better than other possible Anti Wetting solutions?
VINATech have improved the rubber bung, tightened the sealing (also for standard VEC series) but have also changed the Internal construction of the Capacitor to prevent the chemical reaction.

How do our competitors overcome Wetting?
One manufacturer has improved the rubber bung (like our VEC type) and added some epoxy or urethan, this has delayed the phenomenon. They also recommend anti gravitational mounting.
Other manufacturers suggest increasing the number of capacitors in series or bluntly say it is a fact of life and the customer should plan for this.

Life time, can we use the same life time data?
Yes, the NEO follows the same characteristics

Soldering and usage?
Please use the same guidelines as for VEC series, manual soldering or wave soldering (NOT Reflow)   

"I understand that this not practical watches, I calling my product "party watch", not for daily usage but good eye catcher on special occasions. 

Standby time is acceptable, in good condition more than 7 days. If anybody think that 5 minutes run-time is low? it is about 300seconds if you display time for 3 seconds you can check time 100 times or 350 times in low brightness.

Charging:

Charging is very simple because VINATech supercaps are 3.0V, just I use 3.0V fixed voltage LDO MCP1700T3002ETT with 10R resistor to limit charging current + shottky diode for protection reverse current to LDO .... charging voltage drop to acceptable 2.95V

 ...

I am satisfied with results, I have something unique in world ... non practical but unique ;) ...."


Thanks to the Hackaday team you can learn more through Hackaday and YouTube.

Hy-cap Supercapacitor LED Watch made By Peter Misenko 
YouTube > www.youtube.com/watch?v=MieHTr4xJfM 
Project Log > https://hackaday.io/project/21342-bpw34-solar-powered-led-watch 
'Absolute best watch ever' 

The Hy-Cap cell in size of Φ8 or of Φ10 can be also offered in Ammo Taping Package. 

Please contact us on our inquiry page or email us vina@vinatech.com for the specification of the package. 

You can request contact details via our inquiry page. The most local VINATech office will then contact you to discuss your application and requirements.

Also, you may refer the Locations(Link) for regional sales contact.