利用高频感应熔炼和熔融快淬方法制备出Cu-Al-Ni快淬条带.在稀盐酸高温水浴条件下对所得条带进行脱合金，成功制备出纳米多孔铜.采用XRD和SEM对脱合金前后条带的相组成和微观形貌进行分析.结果表明，快淬合金条带物相由四方 Al2 Cu 和立方 Al4 Cu9相组成.条带经脱合金后获得双连续结构的纳米多孔铜，而且所得纳米多孔铜孔径会随Ni含量的增加而减小.电化学测试表明，掺杂Ni的Cu-Al合金条带所制备出的纳米多孔铜在碱性条件下，电氧化甲醇的电流密度较未掺杂 Ni 制备出的纳米多孔铜有一定程度的提升，其中Ni掺杂量为5％(原子分数)时纳米多孔铜电氧化甲醇的电流密度可提升3．5倍.
Nanoporous Cu (NPC)was successfully prepared by chemical dealloying Cu-Al-Ni as-spun ribbons produced by induction melting and a single-roller melt-spinning method in dilute hydrochloric acid solution with high temperature water bath.The phase composition and the micro-morphology of the precursor and dealloyed ribbons were characterized by XRD and SEM.It was found that as-spun ribbon was consisted of tetragonal Al2 Cu and cubic Al4 Cu9 phases.Ni addition was found to be effective in improving current density of electro-oxi-dation of methanol under alkaline conditions by decreasing bicontinuous structure pore size and distribution through the electrochemical tests.Using NPC prepared from (Cu40 Al60 )95 Ni5 precursor alloy,the current densi-ty of electro-oxidation of methanol was improved by 3.5 times.
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