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首页> 外文期刊>RSC Advances >Recycling lead from spent lead pastes using oxalate and sodium oxalate and preparation of novel lead oxide for lead-acid batteries
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Recycling lead from spent lead pastes using oxalate and sodium oxalate and preparation of novel lead oxide for lead-acid batteries

机译：使用草酸和草酸钠和草酸钠的铅粘膏回收铅，并为铅酸电池制备新型氧化铅

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摘要

A sustainable method, with minimal pollution and low energy cost in comparison with the conventional smelting method, is proposed for treating components of spent lead acid batteries with oxalate and sodium oxalate. The pure lead oxalate precursor of PbC2O4 is the only product crystallized in the leaching experiment. Lead oxalate is readily crystallized from the solution due to its low solubility and can be combusted to directly produce lead oxide as a precursor for making new battery pastes. Both lead oxalate and the oxide products have been characterized by means of thermogravimetric analysis (TGA) and X-ray diffraction (XRD). The results show that the lead oxides synthesized at different calcination temperatures are comprise of alpha-PbO and beta-PbO. The batteries assembled using the novel lead oxide powder as the positive active material show good cyclic stability for 50 charge/discharge cycles. The cell using lead oxide powder containing 15 wt% beta-PbO exhibits excellent initial capacity, cycling performance and high-rate discharge characteristics and can deliver a discharge capacity of 180 mA h g(-1) at 30 mA g(-1) and more than 60 mA h g(-1) at 240 mA g(-1). Within 50 cycles, its capacity loss is low (5%) with excellent cyclic stability.
机译：与传统冶炼方法相比，具有最小污染和低能量成本的可持续方法，用于处理具有草酸和草酸钠的废铅酸电池的组分。 PBC2O4的纯铅草酸酯前体是唯一在浸出实验中结晶的产物。由于其低溶解度，铅草酸溶液从溶液中易于结晶，并且可以燃烧以直接产生氧化铅作为制造新电池糊的前体。通过热重分析（TGA）和X射线衍射（XRD），已经表征了铅草酸铅和氧化物产物。结果表明，在不同煅烧温度下合成的铅氧化物包括α-PbO和β-PbO。使用新型氧化铅氧化物粉末组装的电池作为阳性活性物质显示出50个充电/放电循环的良好环状稳定性。使用含有15wt％β-PBO的铅氧化物粉末的电池具有出色的初始容量，循环性能和高速率放电特性，并且可以在30mA g（-1）等中提供180 mA Hg（-1）的放电容量在240 mA g（-1）时超过60 mA hg（-1）。在50周期内，其容量损耗低（5％），具有优异的循环稳定性。

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  • 来源
    《RSC Advances》 |2015年第115期|共8页
  • 作者

    Ma Cheng; Shu Yuehong; Chen Hongyu;

  • 作者单位

    S China Normal Univ Sch Chem &

    Environm Guangzhou 510006 Guangdong Peoples R China;

    S China Normal Univ Sch Chem &

    Environm Guangzhou 510006 Guangdong Peoples R China;

    S China Normal Univ Sch Chem &

    Environm Guangzhou 510006 Guangdong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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