Positive electrode material in lead-acid car battery modified by protic ammonium ionic liquid
Positive electrode material in lead-acid car battery modified by protic ammonium ionic liquid
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DOI：
10.1016/j.est.2019.100996
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发表时间：
2019-12-01
影响因子：
9.4
通讯作者：
Lota, Grzegorz
中科院分区：
文献类型：
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作者：
Kopczynski, Kacper;Gabryelczyk, Agnieszka;Lota, Grzegorz
这项研究的目的是开发一种可行的和技术上可行的12V铅酸蓄电池的改装，以提高其能量密度、容量和寿命。提出的解决方案促进了质子铵离子液体添加到铅酸蓄电池正极活性物质中。这些实验包括几种质子型氨基离子液体的合成和表征，这些离子液体的阳离子侧链长度不同。提出了电池测试的三阶段程序。首先，以铅钙锡合金为工作电极，离子液体作为电解液添加剂的实验室模型，使最佳改性剂的选择成为可能。研究得最好的离子液体N，N-二甲基十六烷基硫酸铵的加入，抑制了集电体材料的腐蚀。70%，提高了析氢反应的过电位。然后，在2V模型铅酸电池上进行了测试，比较了不同浓度的离子液体在活性物质中的作用。最后，对添加0.5%质子型离子液体的12V铅酸蓄电池进行了测试，以评估最终对完整的工业产品的影响。
The aim of the presented study was to develop a feasible and technologically viable modification of a 12 V lead-acid battery, which improves its energy density, capacity and lifetime. The proposed solution promotes the addition of a protic ammonium ionic liquid to the active mass of the positive electrode in the lead-acid battery. The experiments included the synthesis and characterisation of several protic ammonium-based ionic liquids, which differed in terms of the length of the side chain in the cation. A three-stage procedure of the battery test was proposed. First, a laboratory model with a Pb-Ca-Sn alloy as a working electrode and ionic liquids as additives to the electrolytes enabled the selection of the best modifier. Addition of the best-studied ionic liquid, N,N-dimethylhexadecylammonium sulfate, suppressed the corrosion of current collector material by approx. 70% and increased the overpotential of hydrogen evolution reaction. Afterwards, tests on 2 V model lead-acid cells were carried out to compare the various concentrations of the ionic liquid in the active mass. Finally, tests on 12 V lead-acid batteries with 0.5% of protic ionic liquid were performed to evaluate the final influence on the full, industrial product.