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Meeting MS&T21: Materials Science & Technology
Symposium Controlled Synthesis, Processing, and Applications of Structural and Functional Nanomaterials
Presentation Title Tungsten Ditelluride, A Semimetal Transition Metal Dichalcogenide as Active Material for Monovalent-ion Battery Electrodes
Author(s) Davi Marcelo Soares, Gurpreet Singh
On-Site Speaker (Planned) Davi Marcelo Soares
Abstract Scope Electrochemical energy storage systems (EESS) have achieved in the past few decades a prominent place for several applications due to their high conversion efficiency and high energy densities. However, the widespread use of EESS requires the continuous development of novel electrode materials towards higher energy density batteries. In this comparative work we report tungsten ditelluride (WTe2) as lithium-ion battery (LIB) and potassium-ion battery (KIB) electrode material. Presenting a layered structure, this semimetal transition metal dichalcogenide (TMD) showed cycling stability as electrode material for LIB and KIB. Concerning the KIB results, in half-cell configuration WTe2 stored up to 3.3 K+ per formula unit, at least 4 times of WS2 KIB electrode. To summarize, this work unveils the potential of WTe2 as anode for LIB and KIB due to its physical and electrochemical properties. Results presented herein are compared with other electrode materials, namely graphite and WS2.

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