Abstract
Dendrites growth,chemical corrosion,and hydrogen evolution reaction(HER)on zinc anodes are the main barriers for the development of aqueous zinc-ion batteries(AZIBs).Constructing interfacial protec-tive layer is an effective way to alleviate the side reactions on the anodes.Herein,Cu/Ti3C2Cl2 MXene(CMX)with high zincophilic and hydrophobic property is prepared by the lewis molten salts etching method,and the CMX interface protection layer is constructed by a simple spin coating.The CMX coat-ing layer can provide abundant nucleation sites and uniformize the charge distribution through the zin-cophilic Ti3C2Cl2 MXene matrix,leading to homogenous Zn deposition.In addition,the hydrophobic coat-ing contained anti-corrosive Cu nanoparticles can prevent the Zn anode from the electrolyte,beneficial for suppressing the chemical corrosion and HER.Therefore,the stable and reversible Zn plating/stripping is achieved for the Zn anode coated by the CMX,which exhibits the lifespan of over 1400 h at 0.5 mA cm-2,and even can steadily run for 700 h with 65 mV at 10 mA cm-2.Furthermore,CMX@Zn shows a high coulombic efficiency of over 100％for 3800 cycles,which indicates that the CMX@Zn electrode has excellent stability and reversibility of Zn stripping/plating.The full batteries assembled with ZnCoMnO/C(ZCM)cathodes also exhibits higher capacity(450.6 mAh g-1 at 0.1 A g-1)and cycle stability(capacity retention of 70％after 1500 cycles).This work enhanced the lifespan of AZIBs and broaden the research of multifunctional coating layer to other secondary batteries based on metal anodes.
基金项目
国家自然科学基金(51962032)
program for Strong Youth Technology Leading Talents in Bingtuan Technological Innovation Talents(2023CB008-11)
Youth Innovative Top Talents Fund,Shihezi University(CXBJ202203)
Youth Science and Technology Innovation Leading Talent Fund,Bashi Shihezi(2023RC02)
NETL
NSTL
万方数据