Technology Leadership

Technology Leadership

Maxwell Technologies is a pioneering global leader in developing, manufacturing and marketing ultracapacitors, with millions of units now performing reliably around the clock worldwide. Ultracapacitors are energy storage and power delivery devices that enable design engineers to create systems which optimize energy efficiency. Maxwell ultracapacitors are known for their superior power performance, their extraordinary reliability and remarkably long cycle and calendar lives. We have developed and produced power products since 1965 and have continually invested a significant portion of our spending in research and product development, which today translates into solutions that meet the stringent requirements of a broad range of electrical energy applications. Maxwell’s investments in research and development are protected by issued U.S. patents. Our focus to continue to invent and protect proprietary technology enables our continued market leadership.

A critical element of Maxwell ultracapacitors’ industry-leading cost position and unparalleled longevity and performance lies in our proprietary energy storage electrode technology. A combination of materials science and electrode formulation, along with a simple industrialized fabrication process, makes the Maxwell ultracapacitor electrode one of a kind in the energy storage world. Through the unique, environmentally compatible, solvent-free process, a high-purity activated carbon custom formulation is formed into carbon film and laminated onto aluminum foil substrate to produce super-capacitive, double-layer electrode material. Wound or folded electrode and separator material are then sealed in a robust, hermetically sealed package and impregnated with high-performance electrolyte. The resulting ultracapacitors are extremely durable, maintenance-free products which are in a variety of form factors and capacitance ratings to meet the needs of applications ranging from small commercial devices to heavy industrial examples such as hybrid transit buses, wind turbines and more.

Manufacturing

Maxwell’s research and product development centers are located in San Diego, California for ultracapacitor and microelectronic products and in Rossens, Switzerland for high-voltage capacitor products. To safeguard proprietary processes and trade secrets, our ultracapacitor electrode fabrication, microelectronic and high-voltage capacitor product manufacturing are conducted only within company facilities. To take advantage of low-cost labor and commodity materials sourcing, we have formed relationships with fully certified offshore contract manufacturers for final assembly. These contract manufacturing relationships have been instrumental in optimizing product quality and reducing ultracapacitor manufacturing costs, which in turn gives the company the ability to rapidly and efficiently expand ultracapacitor production capacity to keep pace with growing demand.