Aeternus the experts in battery technology Advanced Zinc-Air Battery Technology EMW Energy Co., Ltd. 459-24, Kasandong, Keumcheongu, Seoul, Korea
Zinc-Air Battery Power is generated by the reaction of zinc gel (anodic material) and atmospheric oxygen (cathode). Oxygen is actively transported into the battery through MEA(Membrane Electrode Assembly). The whole battery volume is filled only with zinc, the anodic material, so the capacity is very high.
The Benefits of Zinc-Air Battery Et Extremely larger capacity compare to the ordinary battery systems such as alkaline (5 times), lithiumion (3 to 4 times) Flat discharge battery (voltage won t drop until the end of capacity) The most safe battery system (even won t burnin the fire) f f f f Infinite shelf life without self-discharge as long as the cell is sealed
ABriefHistoryofZincAir of Zinc-Air Battery Theories are first developed d in 1920s. Being widely used for low power hearing aid devices as a coin type. Currently developed for military battery use. Pi d h bl i i b i Primary and rechargeable zinc-air batteries are being developed for many applications.
MEA(Membrane Electrode Assembly) Ak key component composite membrane consisted by carbon, polymer and metal, and have multiple functions like, facilitates the transportation of atmospheric oxygen into the battery as an ionic oxygen form. to collect current from the reaction of zinc and oxygen ions. to inhibit the leak of the electrolyte.
Problems of Current Technology Large amount of hazardous mercury (Hg) should be added to the zinc gel to ensure the anodic material conductivity. Cannot used for high current drain devices because of the limited oxygen transfer rate with the poor performance of MEA. Open cell structure lead to the leakage of Open cell structure lead to the leakage of the electrolyte.
Aeternus Technology Patented zero-mercury anode zinc gel Super-hydrophobic fast oxygen transfer MEA Innovative cell design to ensure leak-proof E i ll fi dl f i Environmentally-friendly manufacturing process
Aeternus Zinc-Air Battery World first standard cylindrical zinc-air batteries with type AAA, AA and C More than 4 times capacity compare to alkaline battery Infinite Shelf life Wait for mass production
3 rd Generation Military Battery EA 7080 Unit Cell Type : Zinc-Air primary cell Nominal voltage : 1.4 V Capacity : 34 Ah (1A continuous discharge) Maximum current drain 1.8 A (continuous) 2.5 A (pulsed) Dimension : 78 x 78 x 8 mm
3 rd Generation Military Battery EA 1020 Battery Pack Same form factor as BA-8140/U (Using by the U.S. Armed Forces) Approximately 10% better performance than the other Type : Zinc-Air primary cell Target : Mobile Radio-Communication System, Control Gear Power for Missile Operating Time : 5~10 day/pack k(in case of AN/PRC-119, 24V) Dimension : 292 x 97 x 57 mm
IPP (Infantry Portable Power) IPP (Infantry Portable Power) zinc-air primary battery is a revolutionary energy solution for military applications. With the size of a common military rifle clip, when in use simply the case is opened to expose individual battery cells. Designed to operate almost every field device such as radio, night vision, field laptop and GPS systems. Two IPP can provide sufficient power for field radio transmitter. Compare to the ordinary batteries, with the benefits of zinc-air technology, an IPP can provide over 10,000 mah capacity with 7.2 volts. Also, almost no self discharge exists, it can be stored up to 10 years. When necessary two or three IPP can be connected to provide higher voltage.
Zinc-Air Rechargeable Battery Development Target of Aeternus For pure PEV (Plug-in EV) market Without battery material exchange system Sufficient recharge cycle lifetime Strategies for Development Basic rechargeable anode gel technology Controlled charge system Battery grid manufacture technology
On-going Results of Aeternus 5 Basic patents (pending) Demonstration in Exhibitions (with rechargeable electric bicycle) Plan to run EV 400km trip in ¾ rev. in 2010