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Preparation and electrochemical properties of soot doped lead-based composite anodes
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    Abstract:

    In this paper, a rapid and low-cost method was suggested to fabricate carbon nanomaterials-soot particles (CH), and lead/soot (Pb/CH) composite anode materials were prepared by powder metallurgy and mechanical alloying techniques. Oxygen evolution of lead-based anodes was improved due to high activated surface and catalytic activity of carbon nanomaterials. CH was characterized using field emission scanning electron microscopy (FE-SEM), Fourier infrared spectroscopy (FTIR), cyclic voltammetry curve (CV) and linear scanning voltammetry curve (LSV). CH shows a shape of many chains of nanosized with abundant carbonyl and hydroxyl groups as a excellent transfer carrier of electron and proton. The overpotential of composite anodes decreased with the conten of CHin lead/soot materials.The apparent exchange current density of the Pb/1.5 wt.% CH composite anode was increased by 3 and 2 orders of magnitude compared to the pure Pb and conventional Pb/0.75 wt.% Ag anodes, respectively. The oxygen evolving overpotential of Pb/1.5 wt.% CH composite anode was lower than that of the Pb/Ag anode and pure Pb anode by 20 mV and 133mV, respectively, under the simulated zinc electrowinning conditions, showing excellent electrocatalytic activity of oxygen evolution.

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[zhang chenpei, yang changjiang, Zhao Lvxing, Li Can, Li Qikun, Chang Jun. Preparation and electrochemical properties of soot doped lead-based composite anodes[J]. Rare Metal Materials and Engineering,2024,53(2):483~489.]
DOI:10.12442/j. issn.1002-185X.20230038

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History
  • Received:January 27,2023
  • Revised:February 22,2023
  • Adopted:February 22,2023
  • Online: February 28,2024
  • Published: February 23,2024