Abstract
Construction of proton transport channels in metal-organic frameworks(MOFs)with simple synthesis processes,high proton conductivities and good performance stabilities has been of great interest for pro-ton exchange membrane fuel cell(PEMFC).Herein,we mimic the proton transport behavior of amino acid residues in bacteriorhodopsin,select UiO-66-COOH as the host,glycine and aspartic acid as the func-tional guest molecules,and then functionalize the MOF framework with amino acids to obtain biomimetic proton transport channels.This strategy endows UiO-66-COOH-Asp a high proton conductivity of 1.19 x 10-2 S/cm at 70 ℃ and 98％RH,excellent cycle stability of performances and performance durability,which can be comparable to the reported MOFs-based proton conductors.Moreover,the proton conduc-tion mechanism in UiO-66-COOH-Asp is elaborated in detail due to its visual structure,which is also one of the advantages of adopting MOFs as research platform,making it possible to optimize the structure-activity relationship of advanced materials.Notably,this strategy has clear objectives and simple synthe-sis,which has made certain contributions to both theoretical research and future industrial production of proton conductors.
基金项目
浙江省自然科学基金(LY20E020001)
Research Initiation Fund Project from Zhejiang Sci-Tech University(22212154-Y)
Fundamental Research Funds of Zhejiang Sci-Tech University(22212290-Y)
NETL
NSTL
万方数据