长期热致吸放氢循环对载钯硅藻土储氢性能的影响

材料研究学报

2011, Vol. 25

Issue (3): 327-332

研究论文

本期目录 | 过刊浏览

长期热致吸放氢循环对载钯硅藻土储氢性能的影响

陈伟^1,2, 罗刚^1,2, 熊良银¹, 陈德敏¹, 刘实¹, 杨柯¹

1.中国科学院金属研究所沈阳 10016
2.中国科学院研究生院北京 100049

Effect of Long–term Thermal Cycling Absorption Process (TCAP) on Hydrogen Storage Performance of a Palladium/Kieselguhr Composite

CHEN Wei^1,2, LUO Gang^1,2, XIONG Liangyin¹, CHEN Demin¹, LIU Shi¹, YANG Ke¹

1.Institute of Metal Research, Chinese Academy of Science, Shenyang 110016
2.Graduate School of Chinese Academy of Sciences, Beijing 100049

引用本文:

陈伟罗刚熊良银陈德敏刘实杨柯. 长期热致吸放氢循环对载钯硅藻土储氢性能的影响[J]. 材料研究学报, 2011, 25(3): 327-332.
, , , , , . Effect of Long–term Thermal Cycling Absorption Process (TCAP) on Hydrogen Storage Performance of a Palladium/Kieselguhr Composite[J]. Chin J Mater Res, 2011, 25(3): 327-332.

全文: PDF(1165 KB)

摘要: 采用PdCl2溶液浸渍--焙烧--还原的方法制备出载钯硅藻土(Palladium/Kieselguhr, 简称Pd/K), 对其进行物相分析、形貌观察、吸放氢PCT以及吸氢动力学测量, 研究了1000次和2000次热致吸放氢循环后的储氢性能。结果表明, 热致循环前后Pd/K的吸放氢PCT曲线基本相同, 吸氢量稍有降低, 动力学性能明显提高。热致循环后Pd/K表面的钯颗粒发生明显粉化, 1000次和2000次热致循环后粉化率(<150 μm)分别为0.21%和3.98%。

关键词 ：金属材料, 钯, 硅藻土, 储氢性能, 热致循环

Abstract：A palladium–kieselguhr composite (Pd/K) was prepared by the PdCl2 dipping–calcinating–reducing method. Hydrogen storage performances of the Pd/K before and after subjecting to 1000 and 2000 cycles of hydriding–dehydriding test using the TCAP method were investigated, including phase analysis, morphology observation, pressure–composition isotherm (P − C − T curve) and hydrogen absorption kinetics of the Pd/K composite. Comparing to the initial status, it was found that the absorption rate of the thermally cycled Pd/K greatly enhanced, the P − C − T curve almost retained the same, while the hydrogen uptake capacity decreased slightly. Pulverization of the palladium particles was found on the thermally cycled Pd/K, and the pulverization rates of the Pd/K after 1000 and 2000 cycles were 0.21% and 3.98%, respectively.

Key words： metallic materials palladium kieselguhr hydrogen storage performance thermal cycling absorption process (TCAP)

收稿日期: 2011-03-14

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