Lead phosphate prepared from spent lead compounds as a negative additive for lead-acid batteries

IF 2.6 4区化学 Q3 ELECTROCHEMISTRY

Journal of Solid State Electrochemistry Pub Date : 2024-09-11 DOI:10.1007/s10008-024-06061-8

Yuli Zhang, Yujie Hou, Liu Nie, Zhiliang Guo, Changgan Lai, Shuai Ji, Donghuai Zhang, Yifan Zhang, Lixu Lei

引用次数: 0

Abstract

Agglomerated nanorods of lead phosphate have been synthesized from the reaction of lead acetate prepared from waste lead paste and Na₂HPO₄, which is used as an additive for the PbSO₄-negative electrode of a lead-acid cell. It has been found that lead phosphate can be all converted to lead sulfate in 36 wt.% sulfuric acid electrolyte and generate phosphoric acid, and the negative active material containing 1 wt.% lead phosphate discharges a capacity of 111 mAh g⁻¹ at 100 mA g⁻¹ till 1.75 V; it still discharges 78 mAh g⁻¹ after 1200 cycles, which is 10.1% higher than the blank PbSO₄ electrode. It is believed that phosphoric acid could remove the non-conductive oxide on the lead alloy grid; thus, a better conductive network could be built. Also, phosphoric acid is adsorbed on PbSO₄ particles, which can improve the reversibility of the electrode and diminish the shedding of PbSO₄.

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用废铅化合物制备磷酸铅作为铅酸蓄电池的负极添加剂

由废铅膏制备的醋酸铅与 Na2HPO4 反应合成了磷化铅纳米棒，该纳米棒用作铅酸蓄电池 PbSO4 负极的添加剂。研究发现，磷酸铅可在 36 wt.% 的硫酸电解液中全部转化为硫酸铅并生成磷酸，含有 1 wt.% 磷酸铅的负极活性材料在 100 mA g-1 的条件下放电至 1.75 V 时的容量为 111 mAh g-1；循环 1200 次后仍可放电 78 mAh g-1，比空白的 PbSO4 电极高出 10.1%。据认为，磷酸可以去除铅合金栅上的非导电氧化物，从而构建出更好的导电网络。此外，磷酸吸附在 PbSO4 颗粒上，可提高电极的可逆性并减少 PbSO4 的脱落。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Solid State Electrochemistry 工程技术-电化学

CiteScore

4.80

自引率

4.00%

发文量

227

审稿时长

4.1 months

期刊介绍： The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.

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