LICAP Technologies’ patented activated dry electrode process has significant advantages to the traditional wet-slurry electrode process. We begin by processing a blend of activated materials and other ingredients to prepare a dry formulation without any toxic solvents. The mixture is fed into a special equipment designed by our engineers. The result is a stand-alone electrode film featuring high active material content, high density, and tight thickness tolerance. This film is then laminated on a current collector foil of choice using our high-speed production equipment. There is no need for drying ovens, or solvent recovery systems. Any trimmings or excess film can be 100% recycled eliminating the costly waste removal operations. Activate Dry Electrode process is versatile and is applicable to the manufacturing of electrodes for Ultracapacitors, Lithium-ion Capacitors, and Lithium-Ion Battery.
Ultracapacitors, also known as Supercapacitors, or Electric Double Layer Capacitors (EDLC’s) store energy electrostatically as opposed to batteries which store energy electrochemically. Since ultracapacitors do not rely on electrochemical reactions, they are capable of handling very rapid charge and discharge rates at high power, repeatedly. There is a limit on the amount of energy that can be stored in an individual ultracapacitor cell, the largest typical cell today stores 3.0Wh (3000F, 2.7V). However, these cells can be connected in series/parallel to meet any energy storage system size requirement, depending on space available and economic considerations. Ultracapacitors excel in applications with short duration energy requirements where battery maintenance and replacement is costly, inconvenient or impossible. Some examples include critical remote systems with a requirement for graceful power down, last gasp, bridge power or voltage sag protection. Also applications with regular, short duration high power demands which normally results in an oversized primary energy source (batteries, generator, etc..). Ultracapacitors can be combined with the primary energy source, and sized to handle only the peak power demands. This enables a downsized primary energy source and improved application performance. Another benefit of ultracapacitors is they are considered to be highly reliable as compared to batteries, and EOL is easily measurable and predictable. With a calendar life >10 years, there are cases where an ultracapacitor can be designed in to last the entire life of a system.
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Applications for lithium ion capacitors (LIC) are similar to ultracapacitors (UC) where long life, highly reliable, maintenance free energy storage is required for a product or system. Various types of UPS systems, peak power delivery, voltage sag compensation and hybrid energy storage systems are a few examples. LIC’s have a few performance differences that make them better suited for specific situations as compared to a UC. One example where LIC has an advantage is self-discharge. Due to the physical properties of a UC, there is a leakage current that can cause an ultracapacitor to self-discharge up to 50% voltage in a matter of weeks. An LIC will self-discharge less than 15% over 3 months. In applications with no constant power supply connected, and potentially long times between charge opportunities, the LIC is a better choice. Also, LIC’s store 3 times the energy of an ultracapacitor, so you can fit the same energy requirement in a much smaller space with LIC as compared to UC. In a one cubic liter volume of space you can store 5Wh of usable energy using UC’s. By comparison, you can store up to 18Wh of usable energy with LIC’s in the same one cubic liter volume of space. Both LIC and UC have very long life characteristics, much higher power capability than a battery, and are inherently safer than a battery (no thermal runaway potential).
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LICAP's patented Activated Dry Electrode™ process versus traditional slurry process.
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