Agency: Department of Defense | Branch: Army | Program: SBIR | Phase: Phase I | Award Amount: 100.00K | Year: 2015
High-energy-density multilayer ceramic capacitors (MLCCs) are receiving more attention because of their strong potential in both military and commercial pulsed power applications. Current commercially available power capacitors, however, suffers from low energy density, low voltage rating, poor stability in a wide temperature range, and high costs. This SBIR project will be devoted into the development of a novel class of high energy density, high voltage MLCCs based on an innovatively designed nanocomposite dielectric material. In addition, the proposed dielectric and capacitors can be processed through scalable and cost-effective methods that exhibit good compatibility with the existing industry technologies, thereby providing for an attractive scalability and potentially low costs suitable for mass productions. In Phase I, the feasibility of the proposed technology will be demonstrated through material design, processing, MLCC prototyping, and characterization. In Phase II, both material design and processing will be further optimized. Based on the results, process scaling-up will be carried out, and MLCCs with the targeted properties will be prototyped. Promising performance of the developed MLCC will be demonstrated through more extensive tests with a focus on high energy density, high voltage rating, enhanced temperature stability, and reduced costs.
Aegis Technology Inc. | Date: 2010-09-09
Versions of the present invention have many advantages, including operation under high temperatures, or high frequencies while providing the required current for switching a SiC VJFET, providing electrical isolation and minimizing dv/dt noise. One embodiment is a silicon carbide gate driver comprising a first group of silicon on insulator devices and passive components and a second group of silicon carbide devices. The first group may have equivalent temperatures of operation and equivalent frequencies of operation as the second group.
Aegis Technology Inc. | Date: 2010-12-20
Various embodiments of the present invention create a cost-effective process that improves ZT value while enabling the TE materials to be scaled-up for mass production. Several embodiments of the invention include a thermoelectric material comprised of nanopowder and a nanomaterial. The nanomaterial may be in the form of a nanowire, nanofiber, nanotube, nanocrystal or similar form or combination of forms. Other embodiments include a method of creating a thermoelectric material through mixing and consolidating the nanomaterial and nanopowder into a solid. Additional embodiments may involve a thermoelectric module with P and N type semiconductors of the nanomaterial and nanopowder.
Aegis Technology Inc. | Date: 2014-05-13
Objects of the present invention include creating cathode materials that have high energy density and are cost-effective, environmentally benign, and are able to be charged and discharged at high rates for a large number of cycles over a period of years. One embodiment is a battery material comprised of a doped nanocomposite. The doped nanocomposite may be comprised of LiCoPO4; C; and at least one X, where said X is a metal for substituting or doping into LiCoPO4. In certain embodiments, the doped nanocomposite may be LiCoMnPO4/C. Another embodiment of the present invention is a method of creating a battery material comprising the steps of high energy ball milling particles to create complex particles, and sintering said complex particles to create a nanocomposite. The high energy ball milling may dope and composite the particles to create the complex particles.
Agency: Department of Defense | Branch: Army | Program: SBIR | Phase: Phase II | Award Amount: 375.00K | Year: 2013
To realize the full potential of Li-ion batteries, the development of more advanced cathode materials are highly desirable, which is critical to enable high-energy-density Li-ion batteries to meet silent watch or other demanding requirements of military vehicles. In this project, Aegis Technology Inc. proposes to develop a novel class of cathode based on layered-spinel lithium-manganese-nickel-oxide (LS-LMNO) nanomaterials that is combined with novel doping and surface coating. This class of cathode material is expected to provide significantly enhanced energy density (>850 Wh/kg vs. 500-600Wh/kg of commercial products), excellent rate capability, and long service/cycle life, which will help to increase technical vehicle silent watch time by 15% or more. In addition, a cost-effective, scalable processing method will also be established to enable the potential mass production with commercial viability. In the accomplished Phase I, technical feasibility of the proposed cathode has been demonstrated successfully with high specific capacity (>250 mAh/g) and promising rate capability and cycling performance. In Phase II, further optimization on material composition and processing will be conducted. Using the developed cathode along with suitable electrolyte and anode material that enable the implementation of this cathode material, Li-ion cell prototypes (e.g., punch cell and 18650/26650 type) and the sub-scale battery packs will be fabricated and tested (>1000 cycles) in order to demonstrate the benefits of the developed cathode at the system level. In addition, preliminary processing scale-up and cost analysis will be conducted, which will pave the way for subsequent commercialization of the developed cathode materials and the resultant Li-ion batteries. As a potentially targeted application, a 6T battery (24V, 100 Ah) based on the high-performance Li-ion cells developed will be designed and demonstrated.