A facile mixed complex synthesis method for perovskite oxides toward electrocatalytic oxygen reduction

Hui Lu; Danyang Wu; Yue Gu; Wenxin Sun; Xiaojian Yang; Wenxuan Li; Honglei Shuai; Xinsheng Zhao

doi:10.1039/d3cc04585d

A facile mixed complex synthesis method for perovskite oxides toward electrocatalytic oxygen reduction

Chem Commun (Camb). 2023 Nov 28;59(95):14149-14152. doi: 10.1039/d3cc04585d.

Authors

Hui Lu^{1

2

3}, Danyang Wu⁴, Yue Gu¹, Wenxin Sun¹, Xiaojian Yang^{1

2

3}, Wenxuan Li¹, Honglei Shuai^{1

3}, Xinsheng Zhao⁴

Affiliations

¹ School of Science and Technology, Xinyang University, Xinyang 464000, Henan Province, People's Republic of China. huiludicp@hotmail.com.
² Xinyang Municipal Key Laboratory of Critical Materials for Energy and Green Chemistry Processes (XYU), Xinyang 464000, Henan Province, People's Republic of China.
³ Henan Provincial Engineering Research Center of Critical Materials for High-performance Green Chemical Engineering and Energy (XYU), Xinyang 464000, Henan Province, People's Republic of China.
⁴ School of Physics and Electronics Engineering, Jiangsu Normal University, Xuzhou 221116, Jiangsu Province, People's Republic of China. xinshengzhao@jsnu.edu.cn.

PMID: 37955226
DOI: 10.1039/d3cc04585d

Abstract

The perovskite-type La_(0.5+x)Sr_(0.5-x)FeO_3-δ (x = 0.00, 0.10, 0.20) oxides for the electrocatalytic oxygen reduction reaction (ORR) were synthesized by a facile reaction-EDTA/citric acid mixed complex sol-gel method. The cubic single-phase perovskite structure of the as-prepared oxides is demonstrated using powder X-ray diffraction (XRD). Scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM-EDX), transmission electron microscopy/selected area electron diffraction (TEM-SAED), and X-ray photoelectron spectroscopy (XPS) characterizations were also conducted for the perovskite-type La_(0.5+x)Sr_(0.5-x)FeO_3-δ (x = 0.00, 0.10, 0.20) oxides. Furthermore, the electrochemical ORR properties of the as-prepared oxides in alkaline media were studied, with the oxides exhibiting good electrocatalytic ORR performance.