Nanotemplated platinum fuel cell catalysts and copper–tin lithium battery anode materials for microenergy devices

Nanotemplated materials have significant potential for applications in energy conversion and storage devices due to their unique physical properties. Nanostructured materials provide additional electrode surface area beneficial for energy conversion or storage applications with short path lengths for electronic and ionic transport and thus the possibility of higher reaction rates. We report on the use of controlled growth of metal and alloy electrodeposited templated nanostructures for energy applications. Anodic aluminium oxide templates fabricated on Si for energy materials integration with electronic devices and their use for fuel cell and battery materials deposition is discussed. Nanostructured Pt anode catalysts for methanol fuel cells are shown. Templated CuSn alloy anodes that possess high capacity retention with cycling for lithium microbattery integration are also presented.

► Anodic Aluminum oxide formation on Si substrate.
► High density nanotemplated Pt catalyst on Si for integrated energy and electronics.
► CuSn alloy deposition from a single, high efficiency methanesulfonate plating bath.
► Nanotemplated CuSn Li anode electrodes with high capacity retention.