Silane-based hydrogen storage materials for fuel cell application: Hydrogen release via methanolysis and regeneration by hydride reduction from organosilanes

Won Sik Han; Tae Jin Kim; Sung Kwan Kim; Yongmin Kim; Yeongcheon Kim; Suk Woo Nam; Sang Ook Kang

doi:10.1016/j.ijhydene.2011.06.118

Silane-based hydrogen storage materials for fuel cell application: Hydrogen release via methanolysis and regeneration by hydride reduction from organosilanes

Won Sik Han, Tae Jin Kim, Sung Kwan Kim, Yongmin Kim, Yeongcheon Kim, Suk Woo Nam, Sang Ook Kang

GREEN SCHOOL (Graduate School of Energy and Environment)

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

A series of cyclic- and linear organosilanes, 1-5, was prepared and examined as potential hydrogen storage materials. When a stoichiometric amount of methanol was added to a mixture of cyclic organosilane, (CH ₂SiH₂)₃ (1) or (CH₂SiH ₂CHSiH₃)₂ (2), and 5 mol% NaOMe, rapid hydrogen release was observed at room temperature within 10-15 s. The hydrogen storage capacities of compounds 1 and 2 were estimated to be 3.70 and 4.04 wt.-% H ₂, respectively. However, to ensure the complete methanolysis from organosilanes including methanol evaporation at exothermic dehydrogenation condition, two equivs of methanol were used. The resulting methoxysilanes, (CH₂Si(OMe)₂)₃ (6) and (CH₂Si(OMe) ₂CHSi(OMe)₃)₂ (7), were regenerated to the starting organosilanes in high yields by LiAlH₄ reduction. Linear organosilanes, SiH₃CH₂SiH₂CH ₂SiH₃ (3), SiH₃CH₂CH(SiH ₃)₂ (4), and SiH₃CH₂CH(SiH ₃)CH₂SiH₃ (5) also showed fast hydrogen release kinetics at room temperature with hydrogen storage capacities of 4.26, 4.55, and 4.27 wt.% H₂, respectively; the corresponding methoxysilanes were successfully regenerated by LiAlH₄. Compound 1 was further tested as hydrogen source for fuel cell operation.

Original language	English
Pages (from-to)	12305-12312
Number of pages	8
Journal	International Journal of Hydrogen Energy
Volume	36
Issue number	19
DOIs	https://doi.org/10.1016/j.ijhydene.2011.06.118
Publication status	Published - 2011 Sept

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2011-0018595) and the Korea Institute of Science and Technology.

Keywords

Hydrogen storage material
Hydrosilane
PEMFC
Regeneration

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijhydene.2011.06.118

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@article{45e9033bd00a4418a62bfe24628fd96c,

title = "Silane-based hydrogen storage materials for fuel cell application: Hydrogen release via methanolysis and regeneration by hydride reduction from organosilanes",

abstract = "A series of cyclic- and linear organosilanes, 1-5, was prepared and examined as potential hydrogen storage materials. When a stoichiometric amount of methanol was added to a mixture of cyclic organosilane, (CH 2SiH2)3 (1) or (CH2SiH 2CHSiH3)2 (2), and 5 mol% NaOMe, rapid hydrogen release was observed at room temperature within 10-15 s. The hydrogen storage capacities of compounds 1 and 2 were estimated to be 3.70 and 4.04 wt.-% H 2, respectively. However, to ensure the complete methanolysis from organosilanes including methanol evaporation at exothermic dehydrogenation condition, two equivs of methanol were used. The resulting methoxysilanes, (CH2Si(OMe)2)3 (6) and (CH2Si(OMe) 2CHSi(OMe)3)2 (7), were regenerated to the starting organosilanes in high yields by LiAlH4 reduction. Linear organosilanes, SiH3CH2SiH2CH 2SiH3 (3), SiH3CH2CH(SiH 3)2 (4), and SiH3CH2CH(SiH 3)CH2SiH3 (5) also showed fast hydrogen release kinetics at room temperature with hydrogen storage capacities of 4.26, 4.55, and 4.27 wt.% H2, respectively; the corresponding methoxysilanes were successfully regenerated by LiAlH4. Compound 1 was further tested as hydrogen source for fuel cell operation.",

keywords = "Hydrogen storage material, Hydrosilane, PEMFC, Regeneration",

author = "Han, {Won Sik} and Kim, {Tae Jin} and Kim, {Sung Kwan} and Yongmin Kim and Yeongcheon Kim and Nam, {Suk Woo} and Kang, {Sang Ook}",

note = "Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2011-0018595) and the Korea Institute of Science and Technology. ",

year = "2011",

month = sep,

doi = "10.1016/j.ijhydene.2011.06.118",

language = "English",

volume = "36",

pages = "12305--12312",

journal = "International Journal of Hydrogen Energy",

issn = "0360-3199",

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T1 - Silane-based hydrogen storage materials for fuel cell application

T2 - Hydrogen release via methanolysis and regeneration by hydride reduction from organosilanes

AU - Han, Won Sik

AU - Kim, Tae Jin

AU - Kim, Sung Kwan

AU - Kim, Yongmin

AU - Kim, Yeongcheon

AU - Nam, Suk Woo

AU - Kang, Sang Ook

N1 - Funding Information: This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (No. 2011-0018595) and the Korea Institute of Science and Technology.

PY - 2011/9

Y1 - 2011/9

N2 - A series of cyclic- and linear organosilanes, 1-5, was prepared and examined as potential hydrogen storage materials. When a stoichiometric amount of methanol was added to a mixture of cyclic organosilane, (CH 2SiH2)3 (1) or (CH2SiH 2CHSiH3)2 (2), and 5 mol% NaOMe, rapid hydrogen release was observed at room temperature within 10-15 s. The hydrogen storage capacities of compounds 1 and 2 were estimated to be 3.70 and 4.04 wt.-% H 2, respectively. However, to ensure the complete methanolysis from organosilanes including methanol evaporation at exothermic dehydrogenation condition, two equivs of methanol were used. The resulting methoxysilanes, (CH2Si(OMe)2)3 (6) and (CH2Si(OMe) 2CHSi(OMe)3)2 (7), were regenerated to the starting organosilanes in high yields by LiAlH4 reduction. Linear organosilanes, SiH3CH2SiH2CH 2SiH3 (3), SiH3CH2CH(SiH 3)2 (4), and SiH3CH2CH(SiH 3)CH2SiH3 (5) also showed fast hydrogen release kinetics at room temperature with hydrogen storage capacities of 4.26, 4.55, and 4.27 wt.% H2, respectively; the corresponding methoxysilanes were successfully regenerated by LiAlH4. Compound 1 was further tested as hydrogen source for fuel cell operation.

AB - A series of cyclic- and linear organosilanes, 1-5, was prepared and examined as potential hydrogen storage materials. When a stoichiometric amount of methanol was added to a mixture of cyclic organosilane, (CH 2SiH2)3 (1) or (CH2SiH 2CHSiH3)2 (2), and 5 mol% NaOMe, rapid hydrogen release was observed at room temperature within 10-15 s. The hydrogen storage capacities of compounds 1 and 2 were estimated to be 3.70 and 4.04 wt.-% H 2, respectively. However, to ensure the complete methanolysis from organosilanes including methanol evaporation at exothermic dehydrogenation condition, two equivs of methanol were used. The resulting methoxysilanes, (CH2Si(OMe)2)3 (6) and (CH2Si(OMe) 2CHSi(OMe)3)2 (7), were regenerated to the starting organosilanes in high yields by LiAlH4 reduction. Linear organosilanes, SiH3CH2SiH2CH 2SiH3 (3), SiH3CH2CH(SiH 3)2 (4), and SiH3CH2CH(SiH 3)CH2SiH3 (5) also showed fast hydrogen release kinetics at room temperature with hydrogen storage capacities of 4.26, 4.55, and 4.27 wt.% H2, respectively; the corresponding methoxysilanes were successfully regenerated by LiAlH4. Compound 1 was further tested as hydrogen source for fuel cell operation.

KW - Hydrogen storage material

KW - Hydrosilane

KW - PEMFC

KW - Regeneration

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DO - 10.1016/j.ijhydene.2011.06.118

M3 - Article

AN - SCOPUS:80052796441

SN - 0360-3199

VL - 36

SP - 12305

EP - 12312

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 19

ER -

Silane-based hydrogen storage materials for fuel cell application: Hydrogen release via methanolysis and regeneration by hydride reduction from organosilanes

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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