Abstract: A method and composition for making hybrid nanoparticles and use of such nanoparticles are disclosed herein. In one embodiment of the invention, the hybrid nanoparticles comprise a phase change material (PCM) and a metal layer encapsulating the phase change material. In another embodiment of the invention, the hybrid nanoparticles comprise a phase change material, a polymer layer encapsulating the phase change material, and an outer metal layer encapsulating the polymer layer. In another embodiment of the invention, the hybrid nanoparticles comprise an inner core of a PCM encapsulated by a polymer shell containing embedded nanoparticles that have a high thermal conductivity.

Abstract: A method and composition for making hybrid nanoparticles and use of such nanoparticles are disclosed herein. In one embodiment of the invention, the hybrid nanoparticles comprise a phase change material (PCM) and a metal layer encapsulating the phase change material. In another embodiment of the invention, the hybrid nanoparticles comprise a phase change material, a polymer layer encapsulating the phase change material, and an outer metal layer encapsulating the polymer layer. In another embodiment of the invention, the hybrid nanoparticles comprise an inner core of a PCM encapsulated by a polymer shell containing embedded nanoparticles that have a high thermal conductivity.

Abstract: This invention is directed to coolant compositions, particularly coolant compositions useful in fuel cells, and to fuel cells containing such coolant compositions. The coolant compositions or heat transfer fluids of this invention have and retain low electrical conductivity through extended periods of use. These coolants or heat transfer fluids are composed of a base composition and an additive package which imparts the property of retaining low electrical conductivity for extended periods of time. The base composition can be de-ionized water (DI water) alone or a mixture of DI water and a freezing point depressant of the types well-known in the art (e.g., propylene glycol). The additive package contains an organic corrosion inhibitor and a polymeric ion suppressant. The use of both components of the additive package is important.

Abstract: This invention is directed to coolant compositions, particularly coolant compositions useful in fuel cells, and to fuel cells containing such coolant compositions. The coolant compositions or heat transfer fluids of this invention have and retain low electrical conductivity through extended periods of use. These coolants or heat transfer fluids are composed of a base composition and an additive package which imparts the property of retaining low electrical conductivity for extended periods of time. The base composition can be de-ionized water (DI water) alone or a mixture of DI water and a freezing point depressant of the types well-known in the art (e.g., propylene glycol). The additive package contains an organic corrosion inhibitor and a polymeric ion suppressant. The use of both components of the additive package is important.