Thermal conductivity and cycle characteristic of metal hydride sheet formed using aramid pulp and carbon fiber
Thermal conductivity and cycle characteristic of metal hydride sheet formed using aramid pulp and carbon fiber
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DOI：
10.1016/j.ijhydene.2012.11.052
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发表时间：
2013-02
影响因子：
7.2
通讯作者：
N. Yasuda;T. Tsuchiya;N. Okinaka;T. Akiyama
中科院分区：
文献类型：
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作者：
N. Yasuda;T. Tsuchiya;N. Okinaka;T. Akiyama
本文描述了由金属氢化物粉末、芳纶浆粕和碳纤维组成的金属氢化物(MH)板的热性能和加氢性能。采用湿纸法将粘合的原料浆料分散在不锈钢网上，在水中进行脱水干燥，制得氢化氢板。对MH片的循环特性和导热系数进行了实验研究。用稳态热流法测量了不同碳纤维含量和测量方向对有效导热系数的影响。随着碳纤维含量的增加，导热系数仅在平面方向增加到3.20W/m·K。在大约100次吸氢/放氢循环后，由于从板材上去除MH粉末和/或碳纤维而导致的质量下降不到1质量%。此外，MH片材有效地降低了由于MH在吸氢/脱附过程中膨胀而对反应堆容器产生的应力。
This paper describes the thermal and hydrogenation properties of a metal hydride (MH) sheet consisting of MH powder, aramid pulp, and carbon fiber. MH sheets were prepared by the wet paper method in which an agglutinated slurry of raw materials was dispersed onto a stainless steel mesh in water and then the sheet was dehydrated and dried. The cyclic characteristics and thermal conductivities of the MH sheets were experimentally investigated. The effects of changing the carbon fiber ratio and the measurement direction on the effective thermal conductivity were measured by the steady heat flow method. The thermal conductivity increased to 3.20 W/m·K with increasing carbon fiber ratio only in the planar direction. The decreases in mass due to removing MH powder and/or carbon fiber from sheet were less than 1 mass% after around 100 hydrogen absorption/desorption cycles. Moreover, the MH sheet was effective at decreasing the stress on the reactor vessel due to the expansion of MH during hydrogen absorption/desorption.