Electrochemical Double Layer Capacitor Market Analyzed & Forecast by IDTechEx Ltd29 Aug 2012 • by Natalie Aster
To address the need in some applications to have higher energy density while surrendering some supercapacitor advantages, devices with one battery-like positive electrode and one EDL electrode are being developed, several already being on the market.
The company Reticle claims to be able to make supercapacitors from activated carbon in solid form with major cost and performance advantages. It has made a prototype supercapacitor to demonstrate this but is seeks partners to bring it to market as it is essentially a materials company. Production is expected in 2014. MIT put this invention in the top 50 in its 2012 Technology Review.
According to the report “Electrochemical Double Layer Capacitors: Supercapacitors 2013-2023” by IDTechEx Ltd, commercial activated carbon is available in surface areas ranging from 1500 m2/g to 3000 m2/g. The Reticle process is able to preserve approximately 85-90 percent of the surface area of the activated carbon from which it is made, allowing solid, monolithic electrodes with surface areas in the range of 1200 m2/g to 2500 m2/g. Such ultra high surface area electrodes offer exceptional properties for ion removal from dilute or concentrated solutions.
Existing battery technologies fail to address the marketplace needs for high-power energy storage. With significant emphasis on renewable energy, including a rapid ramp-up of Solar, Wind and Geothermal technologies and government mandated requirements for high efficiency vehicles, there is a critical need for cost-effective, high-power and high-capacity energy storage solutions. Graphene is one of the most promising materials for supercapacitor electrodes with expectation of power densities surpassing any other known form of activated Carbon electrodes due to its large and readily accessible surface area.
Electrochemical Double Layer Capacitors: Supercapacitors 2013-2023
Published: August, 2012
Price: US$ 3.995,00
Led by Principal Investigator Dr Xie Xian Ning, the research team used a polystyrene-based polymer to deposit the membrane which, when sandwiched between and charged by two graphite plates, can store charge at 0.2 farads per square centimetre. This is well above the typical upper limit of 1 microfarad per square centimetre for a standard capacitor. The cost involved in energy storage is also reduced from about US$7 to store each farad using existing technologies based on liquid electrolytes to about US$0.62 per farad with this new material.
Using organic waste such as plastic bags, the conversion process from waste to membrane takes about one to two days on average. It is also said that a ton of plastic bags can produce a ton of membrane, depending on the polymer functionalization process. Besides a faster charging speed, the new material can also be charged 5,000 to 6,000 times, about 10 times that of rechargeable batteries.
More information can be found in the report “Electrochemical Double Layer Capacitors: Supercapacitors 2013-2023” by IDTechEx Ltd.
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