APowerCap Technologies, LLC

US
541 Jefferson Ave. Suite 100
Redwood City, CA  94063, USA
Tel: +1 650 206 2323

Eastern Europe
21, Lobanovskoho Str, block 6,
Chaiki, Kiev-Svyatoshin District, Kyiv Region, 08130, Ukraine
Tel: +(380)44 569 5678
Fax: +(380)44 569 5679

About

APowerCap Technologies, LLC (APCT) is a company backed by a pioneering Ukrainian venture capital firm TechInvest. Incorporated in the U.S. in 2006, APCT has R&D and production facilities in Kyiv, Ukraine. APCT develops breakthrough ultracapacitor-based power modules for wide range of applications.

APCT technologies will bring new level of efficiency to dozens of verticals, including vehicles (hybrid, PHEV, electro), consumer electronics, telecommunications, energy generation, quality power supply and others.

APowerCap development team has been conducting research in the field of ultracapacitors for more than 17 years. R&D on ultracapacitors began within the framework of a special project of the Ministry of Electronics of the former Soviet Union. After the collapse of the Soviet Union, members of the R&D team established a company, which offered contract R&D services for international clients in ultracapacitor technology. Among its clients were Skeleton Technologies (former SuperFarad), Idaho National Laboratory, Ener1, Inc.

In 2005, ultracapacitor technology project became a finalist of Ukrainian High-Tech Competition, and successfully presented the technology to international VC investors at SVOD Technology conference in Silicon Valley. In 2006, APowerCap Technologies was established and received seed investment from TechInvest.

APCT R&D team has a number of Ukrainian and Russian patents on ultracapacitors technology and ultracapacitor parts, which were transferred to APCT. Based on the know-how accumulated by the R&D team, APCT has filed two US patents.

Ultracapacitor prototypes, developed by APCT, have been tested by leading industry experts, including:

  • ABB Research Center (Sweden, 1996-1997)
  • INEEL (1997-1998)
  • ITS, Davis, CA (1997-2006)

Test results of APCT ultracapacitor prototypes of 55 F, were highly appreciated by participants of the 16th International Seminar on Double Layer Capacitors & Hybrid Energy Storage Devices in 2006. According to Dr. Burke, a recognized expert in ultracapacitors and relative technologies, APCT ultracapacitors have superior performance comparing with other developers. «The RC time constant of the APowerCap cell is significantly lower and its peak power is considerably higher than any ultracapacitor previously tested from other developers», said Andrew Burke.

Tests have demonstrated that APCT has achieved the best results in the world in ultracapacitor performance and is able to achieve best cost advantage.

Technology

Key Features:

  • novel organic electrolytes based on alkylamino phosphonium or alkylammonium salts and polar aprotic solvents
  • low-cost porous carbons as electrode materials and technology for purification of these carbons
  • special technique for electrode/electrolyte preparation together with some peculiarity of SC assembling and pre-starting (aging) procedure
  • novel methods to significantly reduce ultracap inner resistance

Over the past decade or two ultracapacitors force their way to the market through the strong competition from advanced batteries. Today NiMH and in particular Li-ion batteries demonstrate the power density as high as 0.6-1 kW/kg (though at the expense of lower energy density, shorter cycle life and overheating). Therefore, to become competitive, ultracapacitors must demonstrate the power density much higher than 1 kW/kg providing at the same time the long cycle life. The best of our competitors and ultracapacitor manufacturers demonstrate 1-3 kW/kg at 95% efficiency, while our prototypes demonstrate 5-6 kW/kg.

Fig. 1  Comparison of APCT ultracapacitor power and energy density with major competitors:

Fig. 2  Ragone plot based on ITS test results presented at the Advanced Capacitor World Summit, San Diego in July 2008:

Fig. 3  Ragone plot (normalized) based on ITS test results presented at the Advanced Capacitor World Summit, San Diego in July 2008:

Another obstacle for ultracapacitors on the path to the market is cost of carbon. Nanoporous carbon, which is used as electrode material in supercapacitors, is rather expensive, and it typically contributes about 35% to the total cost. APCT has utilized carbon, which is 4 times cheaper than that used by its major competitors.

APCT middle and large devices can demonstrate the same performance being 2 or 3 times smaller (due to much higher power density), this means that APCT uses 2-3 times less material than competitors.
Currently, APCT research team is focused on achieving the following:

  • to reduce ESR, in particular, to reduce the contact resistance at C/Al interface due to modification of Al current collector
  • to modify some of the natural carbonaceous materials in order to produce low-cost nanoporous carbon electrodes
  • to best match the electrode nanoporous texture with ion size in organic electrolytes
  • to optimize the ratio between nanopores and ion transport channels in the electrode texture
  • to optimize the electrode thickness
  • to protect the Al current collector from anode corrosion
  • to develop special fire retardant agents to assure safety

Products

APowerCap offers ultracapacitors that have been designed using our proprietary breakthrough ultracapacitor technology. This unique technology allowed us to reach values of specific power that exceed 5 kW/kg at a 95% efficiency that corresponds to more than 20 kW/kg at a 50%, keeping the energy density within 1.5-4.5 Wh/kg despite the use of low-cost nanoporous carbon.

Our major goal is to satisfy global market requirements for ultracapacitors in both performance and price. We offer products for prices that at least 20% lower, compared to products with similar voltage/capacitance rates already available on the market.

APowerCap has designed ultracapacitors with outstanding performance that have been recognized by the leading industry experts to be the best in the world in terms of power density. APowerCap ultracapacitors can be used for a wide range of applications, including consumer electronics, power quality systems, automotive industry and many others. Feel free to contact us to discuss usage of our ultracapacitors in your application.

APCT products consists of two major categories:

Pic.1 Single ultracapacitor cells in hard Al enclosure in the range of 480F to 550F, 2.7V

Pic.2 Single ultracapacitor cells in soft Al enclosure in the range of 4F to 550F, 2.7V

On the basis of these single ultracapacitor elements, APCT may develop and produce wide product range of high quality modules, with different voltages and capacitance values. Our best modules are made with this type of cell. They are the most efficient, perform the best in most conditions, and last the longest.

APCT’s R&D team may also produce preproduction pilot samples as a single element or modules;

We pride ourselves on a unique combination of high quality, competitive technology innovation, excellent technical knowledge and outstanding customer service.

Quality to us is paramount! We only deal with quality assured manufacturers of the raw materials and our quality commitment permeates our working practices at every level.

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