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Thermography of (LaCe)Ni 5 Metal Hydride Storage System during Reversible H 2 Sorption and Subsequent Thermal Distribution in a Fuel Cell
Theoretical Foundations of Chemical Engineering ( IF 0.8 ) Pub Date : 2021-04-08 , DOI: 10.1134/s0040579521010048
Artem Chesalkin , Petr Moldrik , Stanislav Mišák , J. M. Averina , V. V. Menshikov

Abstract

Hydrogen is a modern energy carrier, but storage and transportation to the end consumer still stay a weak point. In this work, an experimental energetic system with implemented hydrogen technologies was developed. This system includes a hydrogen storage system based on (LaCe)Ni5 metal hydride (MH) and fuel cells (FC) that lose significant part of heat when converting chemical energy into electricity. The purpose of this analysis is to find the problematic points of the FC with higher heating of the stack and its potential causes during metal hydride discharging via FC. This weak spots with overheating bring the risk of electrolyte drying (the PEM polymer membrane), with next membrane degradation or even destruction. Thermography of the MH storage system during reversible sorption allows controlling temperature more accurate during charging–discharging processes, which leads to the more efficient use of a hydrogen storage system. The effects of cooling and heating curves of the FC heat exchange module have been demonstrated, and the stable condition of the FC stack at constant load was determined.



中文翻译:

(LaCe)Ni 5金属氢化物存储系统在燃料电池中可逆H 2吸附和随后的热分布过程中的热成像

摘要

氢是现代能源载体,但最终用户的存储和运输仍然是薄弱环节。在这项工作中,开发了一种已实施氢气技术的实验性高能系统。该系统包括基于(LaCe)Ni 5的储氢系统金属氢化物(MH)和燃料电池(FC)在将化学能转化为电能时会损失大量热量。该分析的目的是找出随着燃料电池堆的热量增加而在燃料电池中产生问题的点及其在通过燃料电池排放金属氢化物期间的潜在原因。带有过热的弱点会带来电解质干燥(PEM聚合物膜)的风险,进而造成膜的降解甚至破坏。MH存储系统在可逆吸附过程中的热成像技术可以在充放电过程中更精确地控制温度,从而更有效地利用氢存储系统。已经证明了FC换热模块的冷却和加热曲线的影响,并确定了FC堆在恒定负载下的稳定状态。

更新日期:2021-04-09
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