Supercapacitors, Lithium-Capacitors, Lithium-Ion Batteries: An electrode solution for all devices

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With the increase of energy consumption year after year around the world, more energy storage devices are utilized in our everyday life for a series of applications (from battery-powered means of transport to back-up power systems for residential and commercial applications, from wearable devices to advanced electronics). The global energy storage market is exponentially growing at a CARG of 37.6% over the next 10 years. Three of the main players in this growing industry are: lithium-ion batteries, lithium-capacitors and supercapacitors.

All of these devices have something in common: they all use a carbon-based electrode. The electrodes utilized inside energy storage devices are one of the most critical components that determines the performance of the device. As an example, the carbon-based positive electrode of lithium air batteries (LABs) is the component where the major competitive mechanisms occur, such as the electrochemical reactions leading to the formation and decomposition of multiple types of lithium oxides, lithium-ion and electronic transport as well as oxygen transport. Similar conditions can be found in supercapacitors where the electrochemical stability of the electrodes used within the device determine the overall performance of the device itself, particularly the maximum operating voltage and temperature, as well as useful lifetime of the device.

For decades, all traditional carbon-based electrodes used in lithium-ion batteries, lithium-capacitors and supercapacitors utilized polymer-based binders as "glue" to keep the electrode material together. The limitations of using polymers are a result of their electrical insulating properties which cause high ESR.  Additionally, they break down at high voltage and at high temperatures, and require additional additives to enhance conductivity.

Figure 1. Regular electrode with polymer-based binder and primer

Finally, Nanoramic has changed all that.  We have developed a highly engineered electrode material with no polymer binder and no primer, showing a very low internal resistance (ESR or equivalent series resistance) even with thick electrodes.  It can operate at 3 Volts and at temperatures of more than 150 degrees Celsius (these values are referred specifically to supercapacitor application in combination with a selected electrolyte). In the Nanoramic composite electrode, nano-carbon based materials act as both conductive aid and binder, so it’s binder-free.  It has greater thermal and electrochemical stability,  where the ESR is not a function of the electrode thickness like in in commercially available polymer binder-based electrode/  Thismakes the Nanoramic Composite Electrode material perfect for automotive, avionics, oil and gas, geothermal exploration, advanced electronics, and space applications.

We see our Nanoramic CE as a platform able to be utilized by a series of technologies, including ultracapacitors (or EDLC), but also lithium capacitors, and lithium-ionbatteries, for both anode or cathode with the proper adjustments. If you want higher operating voltage, higher operating temperature and longer lifetime for your ultracapacitor or battery, the Nanoramic Composite Electrode is your perfect solution.

Our team is capable of addressing your needs with different thicknesses of the current collector from 20um to 50um, and thicknesses of the active material from 10um to 80um. We have in-house and third parties testing  for EDLC applications and we are looking for partners to develop and test this electrode material for lithium-capacitors and lithium-Ion batteries. The benefits of using Nanoramic CE are the same for all of these technologies: low ESR, high power, high operating temperatures, high stability, and long lifetime.

Figure 2. Nanoramic CE

Read more about our Nanoramic CE here: https://www.nanoramic.com/nanoramic-products-composite-electrodes

Figure 3. Multiple FastCAP ultracapacitor form factors for a variety of applications utilizing Nanoramic CE
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