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首页> 外文期刊>Journal of Chemical Engineering of Japan >Application of Industrial Crystallization Model for Charge-Discharge Cycle of Lead-Acid Batteries at High Pressure
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Application of Industrial Crystallization Model for Charge-Discharge Cycle of Lead-Acid Batteries at High Pressure

机译：工业结晶模型在铅酸蓄电池高压充放电循环中的应用

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摘要

The present study investigates the charge-discharge processes of a Plante lead-acid battery performed under atmospheric pressure and 10 MPa. The ampere-hour efficiency of the lead electrodes was substantially increased by the secondary formation of the Plante electrode, and the ampere-hour efficiency under 10 MPa was slightly higher than that under atmospheric pressure. The active PbSO4 crystals on both electrodes were observed by SEM at different currents, and the morphology and crystal size distribution (CSD) were obtained. Active PbSO4 crystals nucleated and grew during discharging; whereas, they disappeared during charging. This is similar to the crystal behavior during continuous crystallization in a battery. Therefore, a simple population balance model was used to express the CSD of PbSO4 crystals on both electrodes. The CSD of both electrodes were similar at 10 MPa, but the CSD of the positive electrode was different from the CSD of the negative electrode. The current density on both electrodes was balanced under 10 MPa.
机译：本研究调查了在大气压和10 MPa下进行的Plante铅酸电池的充放电过程。通过二次形成Plande电极，引线电极的安培小时效率大大提高，并且在10MPa下的安培小时效率略高于在大气压下的安培小时效率。通过SEM在不同电流下观察两个电极上的活性PbSO4晶体，并获得了形态和晶体尺寸分布（CSD）。活性PbSO4晶体在放电过程中成核并生长。相反，它们在充电过程中消失了。这类似于电池中连续结晶过程中的结晶行为。因此，使用简单的种群平衡模型来表达两个电极上PbSO4晶体的CSD。在10 MPa时，两个电极的CSD相似，但正极的CSD与负极的CSD不同。两个电极上的电流密度在10 MPa以下保持平衡。

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