H),并通過粉末冶金和機(jī)械合金化技術(shù)制備出鉛/碳煙顆粒(Pb/CH)復(fù)合陽極材料,利用納米碳材料高比表面積和高催化活性等優(yōu)點(diǎn),提高鉛基陽極的析氧電催化性。使用場發(fā)射掃描電子顯微鏡(FE-SEM)、傅里葉紅外光譜(FTIR)、循環(huán)伏安曲線(CV)和線性掃描伏安曲線(LSV)等測試進(jìn)行表征。CH呈疏松的球鏈狀,具有豐富的羰基和羥基功能團(tuán),是良好的電子和質(zhì)子傳遞載體。隨著CH含量增加, Pb/CH復(fù)合陽極的析氧超電位降低。Pb/1.5 wt.% CH復(fù)合陽極與純Pb和傳統(tǒng)Pb/0.75 wt.% Ag陽極相比,其表觀交換電流密度分別提高3和2個(gè)數(shù)量級。在模擬鋅電積條件下,其析氧電位低于鉛銀合金陽極20 mV,較純鉛陽極降低133 mV,具有優(yōu)異的析氧電催化活性。"/>

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碳煙顆粒摻雜鉛基復(fù)合陽極的制備及電化學(xué)性能研究
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1.昆明理工大學(xué) 冶金與能源工程學(xué)院;2.銅仁學(xué)院 材料與化學(xué)工程學(xué)院

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國家自然科學(xué)基金資助(51864042,51664040);昆明理工大學(xué)分析測試基金(2021M20202202087);貴州省高層次留學(xué)人才創(chuàng)新創(chuàng)業(yè)擇優(yōu)資助項(xiàng)目(2020)12號


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

    本文采用一種快速、低成本的方法制得納米碳材料-碳煙顆粒(CH),并通過粉末冶金和機(jī)械合金化技術(shù)制備出鉛/碳煙顆粒(Pb/CH)復(fù)合陽極材料,利用納米碳材料高比表面積和高催化活性等優(yōu)點(diǎn),提高鉛基陽極的析氧電催化性。使用場發(fā)射掃描電子顯微鏡(FE-SEM)、傅里葉紅外光譜(FTIR)、循環(huán)伏安曲線(CV)和線性掃描伏安曲線(LSV)等測試進(jìn)行表征。CH呈疏松的球鏈狀,具有豐富的羰基和羥基功能團(tuán),是良好的電子和質(zhì)子傳遞載體。隨著CH含量增加, Pb/CH復(fù)合陽極的析氧超電位降低。Pb/1.5 wt.% CH復(fù)合陽極與純Pb和傳統(tǒng)Pb/0.75 wt.% Ag陽極相比,其表觀交換電流密度分別提高3和2個(gè)數(shù)量級。在模擬鋅電積條件下,其析氧電位低于鉛銀合金陽極20 mV,較純鉛陽極降低133 mV,具有優(yōu)異的析氧電催化活性。

    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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張晨沛,楊長江,趙呂興,李燦,李啟坤,常軍.碳煙顆粒摻雜鉛基復(fù)合陽極的制備及電化學(xué)性能研究[J].稀有金屬材料與工程,2024,53(2):483~489.[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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  • 收稿日期:2023-01-27
  • 最后修改日期:2023-02-22
  • 錄用日期:2023-02-22
  • 在線發(fā)布日期: 2024-02-28
  • 出版日期: 2024-02-23