Designing performance enhanced nuclear battery based on the Cd-109 radioactive source
Designing performance enhanced nuclear battery based on the Cd-109 radioactive source
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基于Cd-109放射源的性能增强核电池设计
DOI：
10.1002/er.4958
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发表时间：
2020
影响因子：
4.6
通讯作者：
Wang Hongyu
中科院分区：
文献类型：
--
作者：
Xu Zhiheng;Jin Zhangang;Tang Xiaobin;Liu Yunpeng;Guo Xiao;Peng Cong;Wang Hongyu
开发了一种基于辐射伏打和辐射发光效应的双效应核电池，其具有以两种不同模式将核能转换为电能的能力。性能增强型核电池主要基于在Cd-109 X射线放射源和GaAs射频层中添加ZnS：Cu射频发光层。为了探索能量转换方式与核电池电性能之间的响应关系，建立物理模型，采用蒙特卡罗方法研究沉积能量分布。放射性发光材料的添加增加了X射线的有效能量沉积，并且这种双效核电池中ZnS：Cu的最佳厚度应设置为560 μm。利用性能优化前后电池的电流-电压特性曲线来研究其电性能。通过对有无辐射发光层的Cd-109核电池进行综合比较，模拟结果与实验结果一致。结果表明，双效核电池的电性能明显高于单效核电池。此外，能量转换效率从0.079%（单射频核电池）提高到0.119%（双效核电池）。双效核电池性能的提高为天基自主遥感器和持续低功率发电技术提供了潜在的应用。
A dual‐effect nuclear battery based on the radio‐voltaic and radioluminescence effect was developed, which has the ability to convert nuclear energy into electrical energy with two different modes. Performance‐enhanced nuclear batteries are mainly based on the addition of ZnS:Cu radio‐luminescent layer to Cd‐109 X‐ray radioactive source and GaAs radio‐voltaic layer. In order to explore the response relationship between the mode of energy conversion and the electrical performance of nuclear battery, the physical model was established to research the deposition energy distribution by using Monte Carlo method. The addition of the radio‐luminescent material increases the effective energy deposition of the X‐rays and the optimized thickness of ZnS:Cu in such a dual‐effect nuclear battery should be set to 560 μm. The current–voltage characteristic curves of the batteries before and after performance optimization were utilized to investigate the electrical properties. Through a comprehensive comparison of Cd‐109 nuclear batteries with or without radio‐luminescent layer, the simulated results are consistent with experimental results. The results indicate that the electrical performance of dual‐effect nuclear battery is significantly higher than that of single radio‐voltaic nuclear battery. Moreover, the energy conversion efficiency increases from 0.079% (single radio‐voltaic nuclear battery) to 0.119% (dual‐effect nuclear battery). The improved performance of the dual‐effect nuclear battery provides potential applications for space‐based autonomous remote sensors and continuous low‐power generation technologies.