无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2023, Vol. 55 ›› Issue (8): 71-76.doi: 10.19964/j.issn.1006-4990.2022-0569

• 新型无机材料在光电催化中的应用 • 上一篇    下一篇

NaFe x Cr y (SO42(OH)6的合成及电化学性能研究

陈俊雪1,2(), 莫建欣1,2, 周治宇1,2, 李中林1,2, 王丁1,2, 李玉平1,2, 胡拥军3, 将学先4(), 李义兵1,2()   

  1. 1.桂林理工大学材料科学与工程学院,广西 桂林 541000
    2.桂林理工大学有色金属与材料加工;新技术教育部重点实验室,广西 桂林 541000
    3.湖南城市学院材料与化学工程学院,湖南 益阳 413099
    4.桂林理工大学南宁分校冶金与资源工程系,广西 南宁 530000
  • 收稿日期:2022-09-22 出版日期:2023-08-10 发布日期:2023-08-25
  • 通讯作者: 李义兵(1973— ),男,博士,教授级高级工程师,研究方向为有色金属冶炼;E-mail:lybgems@glut.edu.cn
    将学先(1972— ),男,副教授,研究方向为有色金属冶金及资源综合回收利用;E-mail:153193806@qq.com
  • 作者简介:陈俊雪(1997— ),女,硕士,研究方向为锌空电池;E-mail:2850075572@qq.com
  • 基金资助:
    广西科技计划项目(重大专项)(桂科AA22067077);广西创新驱动发展专项资金资助项目(桂科AA17204084);湖南省自然科学基金项目(2022JJ5026);有色金属及材料加工新技术教育部重点实验室开放基金项目(19KF6)

Study on synthesis of NaFe x Cr y (SO42(OH)6 and their electrochemical properties

CHEN Junxue1,2(), MO Jianxin1,2, ZHOU Zhiyu1,2, LI Zhonglin1,2, WANG Ding1,2, LI Yuping1,2, HU Yongjun3, JIANG Xuexian4(), LI Yibing1,2()   

  1. 1.Department of Materials Science and Engineering,Guilin University of Technology,Guilin 541000,China
    2.Key Laboratory of New Processing Technology for Nonferrous Metals and Materials,Ministry of Education,Guilin University of Technology,Guilin 541000,China
    3.Department of Materials Science and Chemical Engineering,Hunan City University,Yiyang 413099,China
    4.Department of Metallurgical and Resources Engineering,Guilin University of Technology(Nanning Campus),Nanning 530000,China
  • Received:2022-09-22 Published:2023-08-10 Online:2023-08-25

摘要:

随着国内外能源的过度消耗和环境污染,寻求高效、清洁、可持续的能源已成为当前的首要任务。关于易合成的黄钠铁矾在析氧反应(OER)方面的研究较少。因此,通过水热法合成了4种不同铁铬物质的量比的铬掺杂黄钠铁矾[NaFe x Cr y (SO42(OH)6]催化材料。利用SEM、XRD、Raman和电化学方法对其结构和性能进行表征。结果表明,Cr3+成功地掺入到黄钠铁矾晶格中,随着Cr3+掺杂量的增加,黄钠铁矾颗粒尺寸逐渐减小;在1 mol/L KOH的电解液中,n(Fe3+)/n(Cr3+)为1∶1的样品的OER催化性能最佳;当电流密度为10 mA/cm2时,其过电位为370 mV,塔菲尔斜率为92.99 mV/dec,电化学双层电容(Cdl)为10.94 mF/cm2

关键词: 黄钠铁矾, Cr掺杂, 非贵金属催化剂, 析氧反应

Abstract:

With the excessive consumption of energy and environmental pollution at home and abroad,the search for efficient,clean and sustainable energy sources is a top priority now.Less research has been carried out on the easily synthesised Na-jarosite in the oxygen precipitation reaction(OER).Therefore,four different molar ratios [n(Fe3+)/n(Cr3+)] of chromium-doped Na-jarosite[NaFe x Cr y (SO42(OH)6] catalytic materials were synthesized by hydrothermal method.The structure and properties were characterised using SEM,XRD,Raman and electrochemical methods.The results showed that Cr3+ was successfully doped into the lattice of Na-jarosite,and the size of the Na-jarosite particles was decreased with the increasing amount of Cr3+ doping.In an electrolyte of 1 mol/L KOH,the OER catalytic performance of the sample of n(Fe3+)/n(Cr3+) of 1∶1 was the most excellent.When the current density was 10 mA/cm2,the overpotential was 370 mV,the Tafel slope was 92.99 mV/dec and the electrochemical double layer capacitance(Cdl) was 10.94 mF/cm2.

Key words: jarosite, Cr-doped, non-precious metal catalysts, oxygen evolution reaction

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