Res. Chem. Intermed.
, Vol. 34, Nos 8–9, pp. 709–715 (2008)
Koninklijke Brill NV, Leiden, 2008.
Also available online - www.brill.nl/rci
Investigation of a non-noble composite catalyst for
hydrogen release control of ammonia-borane
, HAN-SUNG KIM
, HYUN-JONG KIM
and YONG-GUN SHUL
Department of Chemical Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-Gu,
Seoul 120-749, South Korea
Nano Surface Technology, Korea Institute of Industrial Technology, 7-47 Songdo-dong, Yeonsu-Gu,
Incheon, South Korea
Received 23 July 2007; accepted 29 August 2007
) has been investigated as hydrogen storage material for fuel-
cell application because of its good gravimetric (19.6 wt%) and volumetric hydrogen density. Non-
noble metals such as cobalt, nickel and copper were employed as catalyst and their combination
was also tried as catalysts. For the effective scanning method for a number of compositions, a high
throughput screening (HTS) test was used. Among the catalysts investigated, the ternary composite
/ACF (active carbon ﬁber) showed excellent performance in releasing the hydrogen
solution, which can be recommended as a viable/suitable catalyst for fuel-cell system
application, with some necessary basic improvements.
Keywords: Ammonia-borane; metal composite; catalyst; fuel cell; combinatorial method.
Hydrogen has been recognized and widely used as an energy carrier for fuel-
cell systems. To realize hydrogen-based economy, hydrogen storage for mobile
applications such as vehicle and portable devices is of signiﬁcant importance. The
efﬁcient storage and transport of this highly inﬂammable gas needs tremendous
care and improved technology . The expected hazards and difﬁculties involved
in storage and usage of gaseous hydrogen in high-pressure vessels have triggered
studies worldwide on safer and more efﬁcient ways for hydrogen storage for
stationary or mobile applications [2, 3]. Among the hydrogen storage candidates are
pressurized hydrogen, liqueﬁed hydrogen, metal hydrides and chemical hydrides.
To whom correspondence should be addressed. Tel.: (82-2) 2123-2758; Fax: (82-2) 312-6401;