锂/亚硫酰氯电池高温贮存性能

摘要

锂/亚硫酰氯(Li/SOCl₂)电池作为一种高比能电池,目前已经在国民经济特别是国防领域中得到了广泛应用。由于金属锂非常活泼,这种电池在高温下储存时,电池容量会发生不同程度的衰减,而且储存时间不同,电池容量衰减的程度也不一样。通过高温加速贮存实验,考察了不同储存温度和不同储存时间对锂/亚硫酰氯电池放电性能的影响。实验结果表明,标称容量为2 800 mAh的电池在60 ℃下分别储存7和35 d后,0.01C放电时的放电容量分别为2 151 mAh和1 744 mAh;40 ℃和60 ℃下储存21 d后,0.01C放电时的放电容量分别为2 294 mAh和1 974 mAh。储存温度越高,储存时间越长,电池放出的容量越少,放电电压平台也越低,放电后电池的阻抗也变得越大。此外,锂/亚硫酰氯电池在高温下储存一段时间后,开路电压也会升高。

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	马苓
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	丁飞
	刘兴江

关键词：锂/亚硫酰氯电池高温贮存放电阻抗

Abstract：

The lithium/thionylchloride batteries have been widely used in the fields of national economy, especially in the field of national defense, due to its high energy density. Because of the activity of lithium, the battery capacity of thionylchloride cells would decrease when keeping at high temperature. The decays of capacities increase with the time of storage, and the degree of attenuation is not the same after different time. In this paper the performance of lithium/thionylchloride batteries after high temperature storage is studied. The discharge capacity is 2 151 mAh and 1 744 mAh when the battery was discharged at 0.01C after storage at 60 ℃ for 7 d and 35 d. While the battery was stored at 40 ℃ and 60 ℃ for 21 d, it can release 2 294 mAh and 1 974 mAh. The results showed that the decays of both capacity and discharge platform were improved with increasing of both temperature and storage time. However, the impedance of cells increased with the increasing for both temperature and storage time. Furthermore, the open-circuit voltage of cells increases with the time of storage.

Keywords： lithium/thionyl battery； high temperature； storage； discharge； impedance

Received 2014-04-20;

Corresponding Authors: 徐强,E-mail:xuqiang@tju.edu.cn。 Email: xuqiang@tju.edu.cn

About author: 马苓(1988-),女,硕士研究生,研究方向为新型化学电源。

引用本文:

马苓, 徐强, 桑林, 丁飞, 刘兴江.锂/亚硫酰氯电池高温贮存性能[J]. 化学工业与工程, 2016,33(2): 70-76

Ma Ling, Xu Qiang, Sang Lin, Ding Fei, Liu Xingjiang.Performance of High Temperature Storage for Lithium Thionylchloride Battery[J]. Chemcial Industry and Engineering, 2016,33(2): 70-76

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