부피법을 이용한 고압․극저온 수소 흡착량측정 방식의 기본 원리 = Volumetric Hydrogen Sorbent Measurement at High Pressure and Cryogenic Condition - Basic Measurement Protocols

다국어 초록 (Multilingual Abstract)

Volumetric capacity metrics at cryogenic condition are critical for technological and commercial development. It must be calculated and reported in a uniform and consistent manner to allow comparisons among different materials. In this paper, we propose a simple and universal protocol for the determination of volumetric capacity of sorbent materials at cryogenic condition. Usually, the sample container volume containing porous sample at RT can be directly determined by a helium expansion test. At cryogenic temperatures, however, this direct helium expansion test results in inaccurate values of the sample container volume for microporous materials due to a significant helium adsorption, resulting significant errors in hydrogen uptake. For reducing this container volume error, therefore, we introduced and applied the indirect method such as ‘volume correction using a non-porous material’, showing a reliable cold volume correction.

참고문헌 (Reference)

1 김병준, "수소저장합금을 이용하는 수소공급시스템의 운전 방법 최적화" 한국수소및신에너지학회 22 (22): 625-, 2011

2 조원철, "부피법을 이용한 수소 저장 성능 평가 장치의수소 저장량 측정법 개선" 한국수소및신에너지학회 19 (19): 64-70, 2008

3 D. E. Demirocak, "Volumetric hydrogen sorption measurements – Uncertainty error analysis and the importance of thermal equilibration time" 38 : 1469-, 2013

4 Y. Ye, "Interaction of hydrogen with novel carbon materials" California Institute of Technology 2001

5 C. J. Webb, "Analysis of the uncertainties in gas uptake measurements using the Sieverts method" 39 : 366-, 2014

6 C. Zlotea, "A round robin characterisation of the hydrogen sorption properties of a carbon based material" 34 : 3044-, 2009