用电沉积和随后的晶体生长方法制备层状双氢氧化物薄膜

IF 1.1 4区 地球科学 Q4 CHEMISTRY, PHYSICAL
Clay Minerals Pub Date : 2021-12-01 DOI:10.1180/clm.2022.8
N. Sonoyama, Shizuka Yamada, T. Ota, Haruna Inagaki, Patrick K. Dedetemo, Satoshi Yoshida
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引用次数: 1

摘要

摘要通过电沉积和随后的LDHs晶体生长,制备了具有各种电极催化剂活性的层状双氢氧化物(LDHs)的气体反应电极表面涂层。随后在Ni-Fe和Zn-Al-LDH系统中的相应电沉积前体膜上生长晶体后,通过X射线衍射和拉曼散射测量证实了LDH的形成。然而,在Mg-Al-LDH电沉积膜上观察到LDHs在Ni-Mn和Cu-Mn体系中的晶体生长。LDH膜也通过电沉积和随后的晶体生长沉积在具有粗糙表面的碳纸电极的表面上。使用制备的LDH涂层碳纸电极,考察了电极对氧还原反应(ORR)的催化活性。对于Ni-Mn、Ni-Al和Ni-Fe LDH涂层的碳纸电极,ORR的阈值电压降低。因此,电沉积在气体反应电极上的LDH对ORR具有高的电化学催化活性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Preparation of layered double hydroxide films using an electrodeposition and subsequent crystal growth method
Abstract The surface coating of a gas reaction electrode with layered double hydroxides (LDHs) featuring various electrode catalyst activities was prepared via electrodeposition and the subsequent crystal growth of LDHs. LDH formation was confirmed by X-ray diffraction and Raman scattering measurements after subsequent crystal growth on respective electrodeposited precursor films in Ni-Fe and Zn-Al LDH systems. However, the crystal growth of LDHs in Ni-Mn and Cu-Mn systems was observed on the Mg-Al LDH-electrodeposited films. LDH films were also deposited on the surface of a carbon paper electrode with a rugged surface via electrodeposition and subsequent crystal growth. Using the prepared LDH-coated carbon paper electrodes, the electrode catalytic activity for the oxygen reduction reaction (ORR) was examined. For Ni-Mn, Ni-Al and Ni-Fe LDH-coated carbon paper electrodes, the threshold voltages of the ORR decreased. Hence, the LDHs electrodeposited on a gas reaction electrode have high electrochemical catalytic activity for the ORR.
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来源期刊
Clay Minerals
Clay Minerals 地学-矿物学
CiteScore
3.00
自引率
20.00%
发文量
25
审稿时长
6 months
期刊介绍: Clay Minerals is an international journal of mineral sciences, published four times a year, including research papers about clays, clay minerals and related materials, natural or synthetic. The journal includes papers on Earth processes soil science, geology/mineralogy, chemistry/material science, colloid/surface science, applied science and technology and health/ environment topics. The journal has an international editorial board with members from fifteen countries.
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