articleAdvanced Functional MaterialsJun 21, 2024Closed access

Heterostructure Interface Construction of Cobalt/Molybdenum Selenides toward Ultra‐Stable Sodium‐Ion Half/Full Batteries

Qilu University of Technology · Shandong Academy of Sciences · +1 more institution

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Abstract

Abstract Transition metal selenides (TMSes) are considered promising candidates for the anodes of sodium‐ion batteries (SIBs) due to their substantial theoretical capacity. However, TMSes still face with inferior cycling lifespan caused by sluggish Na + diffusion kinetics and vigorous volume variations during dis/charge processes. Engineering heterostructure is an attractive solution for rapid Na + transfer, and introducing carbonaceous materials also facilitates enhanced conductivity and structural stability. Herein, CoSe/MoSe 2 heterostructure combined with homogeneous carbon composites are rational designed. The kinetic analysis and theoretical calculations verified that heterointerface engineering induced…

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