Browsing by Author "Silva, Gladys Anahi Lopez"

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    Anodes, cathodes, and separators for batteries and methods to make and use same
    (2024-09-10) Tour, James M.; Salvatierra, Rodrigo Villegas; Silva, Gladys Anahi Lopez; Rice University; United States Patent and Trademark Office
    Anodes, cathodes, and separators for batteries (electrochemical energy storage devices). The anodes are Li metal anodes having lithiated carbon films (Li-MWCNT) (as dendrite suppressors and protective coatings for the Li metal anodes). The cathodes are sulfurized carbon cathodes. The separators are GNR-coated (or modified) separators. The invention includes each of these separately (as well as in combination both with each other and with other anodes, cathodes, and separators) and the methods of making each of these separately (and in combination). The invention further includes a battery that uses at least one of (a) the anode having a lithiated carbon film, (b) the sulfurized carbon cathode, and (c) the GNR-modified separator in the anode/cathode/separator arrangement. For instance, a full battery can include the sulfurized carbon cathode in combination with the Li-MWCNT anode or a full battery can include the sulfurized carbon cathode in combination with other anodes (such as a GCNT-Li anode).
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    Sulfurized carbon cathodes
    (2023-03-14) Tour, James M.; Salvatierra, Rodrigo Villegas; Silva, Gladys Anahi Lopez; Raji, Abdul-rahman O.; Rice University; William Marsh Rice University; United States Patent and Trademark Office
    Alkali metal-sulfur cells and batteries with cathode layers that store alkali metal charge carriers (e.g., lithium ions) in agglomerates of sulfurized carbon. The cathode layers lack costly and environmentally unfriendly nickel and cobalt. The cathode layers are composites that include agglomerates of sulfurized-carbon particles in a conductive binder and interconnected by sp2-bonded carbon materials, such as carbon nanotubes or nanoribbons, that extend within the agglomerates and between the sulfurized-carbon particles.