过电位
材料科学
塔菲尔方程
结晶度
催化作用
石墨烯
X射线光电子能谱
贵金属
氧化物
化学工程
电解质
纳米技术
金属
无机化学
化学
冶金
物理化学
电化学
复合材料
电极
工程类
生物化学
作者
Junping Hu,Youxing Liu
标识
DOI:10.1088/2053-1591/abecad
摘要
Abstract Exploiting non-noble metals catalysts with excellent performance for hydrogen evolution reaction (HER) has aroused gigantic interest, but still challenges. Herein, we reported the graphene oxide (GO) supported Fe doped Ni(OH) 2 hexagonal nanosheets (GO-Fe,Ni HHNs) for HER firstly. SEM and XRD were carried out to investigate the morphology and crystal structure of the GO-Fe,Ni HHNs systematically. The elements and bonding of the sample were measured via using XPS. In addition, we found that the recrystallization treatment could significantly improve the morphology and crystallinity of the nanosheets. Most important, the GO-Fe,Ni HHNs possessed exceptional catalytic performance and stability in PBS solution. The overpotential (10 mA cm −2 ) and Tafel slope were 190 mV and 110 mV dec −1 , respectively, significantly better than that of other non-noble metal catalysts reported before.
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