Method to characterize thermal performances of an aluminum-air battery

IF 9 1区 工程技术 Q1 ENERGY & FUELS Energy Pub Date : 2024-05-23 DOI:10.1016/j.energy.2024.131757
Lei Sheng , Linxiang Fu , Lin Su , Hongning Shen , Zhendong Zhang
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引用次数: 0

Abstract

The thermal behavior in aluminum-air battery has prominent effect on its operation performance, however, the investigations to the battery thermal behavior are still scarce. In this paper, an alkaline vehicular traction aluminum-air battery was designed and its thermal behavior was experimentally investigated. The impacts of various parameters were examined, including the ambient temperature, electrolyte concentration, and discharge current density on the battery's temperature-rise, outgoing heat-flux, heat generation rate, and discharge efficiency, etc. It is shown that the battery's temperature-rise, outgoing heat-flux, and heat generation rate increase with the ambient temperature decreases and the electrolyte concentration increases. Furthermore, the battery heat generation rate decreases over the discharge time, particularly it decreases drastically at the first half of discharge. The discharge efficiency of the battery increases with the increases of operating temperature and discharge current density. The battery discharge efficiency varies with the electrolyte concentration, which approaches 78 % under the electrolyte concentration of 3.0 mol L−1, but less than 60 % under the concentrations of 1.0 mol L−1 and 6.0 mol L−1. The present study compensates a vacancy of the thermal behavior characterization for a vehicular traction aluminum-air battery, and the results are of significance in understanding the aluminum-air battery's thermal behavior.

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表征铝空气电池热性能的方法
铝-空气电池的热行为对其运行性能有显著影响,但对电池热行为的研究仍然很少。本文设计了一种碱性车辆牵引铝-空气电池,并对其热行为进行了实验研究。实验研究了环境温度、电解液浓度和放电电流密度等参数对电池温升、放出热流、发热率和放电效率等的影响。结果表明,随着环境温度的降低和电解质浓度的增加,电池的温升、流出热量和发热率都会增加。此外,电池的发热率随着放电时间的延长而降低,尤其是在放电的前半部分急剧下降。电池的放电效率随着工作温度和放电电流密度的增加而提高。电池放电效率随电解液浓度的变化而变化,在电解液浓度为 3.0 mol L-1 时接近 78%,但在浓度为 1.0 mol L-1 和 6.0 mol L-1 时低于 60%。本研究弥补了车辆牵引铝-空气电池热行为表征方面的空白,其结果对理解铝-空气电池的热行为具有重要意义。
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来源期刊
Energy
Energy 工程技术-能源与燃料
CiteScore
15.30
自引率
14.40%
发文量
0
审稿时长
14.2 weeks
期刊介绍: Energy is a multidisciplinary, international journal that publishes research and analysis in the field of energy engineering. Our aim is to become a leading peer-reviewed platform and a trusted source of information for energy-related topics. The journal covers a range of areas including mechanical engineering, thermal sciences, and energy analysis. We are particularly interested in research on energy modelling, prediction, integrated energy systems, planning, and management. Additionally, we welcome papers on energy conservation, efficiency, biomass and bioenergy, renewable energy, electricity supply and demand, energy storage, buildings, and economic and policy issues. These topics should align with our broader multidisciplinary focus.
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