Novel applications of exfoliated transition metal dichalcogenides to electrochemical fuel cells

摘要

Application of two-dimensional materials (TDMs) that are exfoliated transition metal dichalcogenides in electrochemical fuel cells to remove contaminants that are harmful to the fuel cells; to effect proper transport and containment of various fluids in fuel cells to achieve proper and efficient operation; to protect various surfaces and materials commonly comprised in or used for fuel cells and critical to their operation; and to purify and lower the freezing point of cooling water used for the fuel cell stacks. Disclosed are methods whereby the TDM is used as a barrier to prevent unwanted crossover (between electrodes through a polymer electrolyte membrane or PEM) of chemical species; where the TDM is used to coat and/or encapsulate catalyst particles, carbon catalyst support, PEMs, and chemical or metal hydrides, to protect the same from unwanted exposure to chemical species; and where the TDM is used to purify and lower the freezing point of fuel cell stack cooling water. Also disclosed are products related to the above and comprising the TDM.