Title of Paper:A black phosphorus/Ti3C2 MXene nanocomposite for sodium-ion batteries: a combined experimental and theoretical study

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Date of Publication:2019-11-14

Journal:NANOSCALE

Included Journals:PubMed、SCIE

Volume:11

Issue:42

Page Number:19862-19869

ISSN No.:2040-3364

Abstract:A black phosphorus (BP)/Ti3C2 MXene composite was prepared by compositing small BP nanoparticles with exfoliated Ti3C2 layers. When used as an anode for sodium-ion batteries, the BP/Ti3C2 composite electrode exhibited higher specific capacity and better electrode stability than a BP electrode and a Ti3C2 electrode. The results of experimental and density functional theory (DFT) calculations illustrated that the synergy of BP and Ti3C2 based on a stable interfacial interaction simultaneously reduces the resistances from both electron and Na+ transport, resulting in the impressive electrochemical performance of the BP/Ti3C2 composite in sodium-ion batteries. The synthesis process and research concept could also be extended for further application of MXene materials and studies on sodium-ion batteries.