【簡介】
通過向Ni—W合金鍍液中添加Zr02納米微粒,制備了Ni-W/Zr02納米復(fù)合電極,并采用電化學(xué)方法研究了納米復(fù)合電極在30%NaOH溶液中的析氫催化性能。陰極析氫極化曲線與表觀活化自由能的測試表明, Ni—W/Zr02納米復(fù)合電極在NaOH溶液中的催化析氫.活性高于Ni—W合金電極;提高NaOH溶液的溫度,可降低Ni—W/Zr02納米復(fù)合電極的析氫過電位,提高電極析氫的電催化活性;掃描電鏡的表面形貌照片顯示,Zr02納米微粒的加入使復(fù)合鍍層的表面得到細化,真實表面積增大,有利于氫的析出。Ni-W/Zr02納米復(fù)合電極作為析氫電極,具有高的催化活性和電化學(xué)穩(wěn)定性,有一定的工業(yè)應(yīng)用前景。
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