Department of Chemistry, University of Waterloo, Waterloo, ON, N2L 3G1, Canada.
Adv Mater. 2017 Jan;29(3). doi: 10.1002/adma.201603040. Epub 2016 Nov 14.
The complex surface chemistry that dictates the interaction between MXene and polysulfides - the formation of thiosulfate via consumption of -OH surface groups, followed by Lewis acid-base interaction between the exposed Ti atoms and polysulfides - is unravelled. Interweaving carbon nanotubes between the MXene layers creates a porous, conductive network with high polysulfide adsorptivity, enabling sulfur hosts with excellent performance even at high loading (5.5 mg cm ).
揭示了决定 MXene 和多硫化物之间相互作用的复杂表面化学 - 通过消耗 -OH 表面基团形成硫代硫酸盐，然后暴露的 Ti 原子和多硫化物之间发生路易斯酸碱相互作用 -。将碳纳米管交织在 MXene 层之间，形成具有高多硫化物吸附性的多孔导电网络，使硫主体即使在高负载（5.5mgcm）下也具有优异的性能。
