Cargando…
Enhanced H(2) sorption performance of magnesium hydride with hard-carbon-sphere-wrapped nickel
Magnesium hydride is regarded as one of the most ideal candidates for hydrogen storage, but its relatively high operating temperatures and slow kinetics always hinder its commercial applications. Herein, we first fabricated hard-carbon-sphere-wrapped Ni (Ni/HCS) via a mild chemical method; subsequen...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9084346/ https://www.ncbi.nlm.nih.gov/pubmed/35542472 http://dx.doi.org/10.1039/c8ra05464a |
_version_ | 1784703593505357824 |
---|---|
author | Peng, Dandan Ding, Zhenmin Fu, Yaokun Wang, Yu Bi, Jia Li, Yuan Han, Shumin |
author_facet | Peng, Dandan Ding, Zhenmin Fu, Yaokun Wang, Yu Bi, Jia Li, Yuan Han, Shumin |
author_sort | Peng, Dandan |
collection | PubMed |
description | Magnesium hydride is regarded as one of the most ideal candidates for hydrogen storage, but its relatively high operating temperatures and slow kinetics always hinder its commercial applications. Herein, we first fabricated hard-carbon-sphere-wrapped Ni (Ni/HCS) via a mild chemical method; subsequently, the as-prepared additive was introduced to fabricate an Mg–Ni/HCS composite by using hydriding combustion synthesis. Hard carbon spheres (HCS) effectively inhibited the agglomeration of hydride particles during hydrogen storage cycling; they could also provide active sites to promote the nucleation of Mg-based hydrides. During the hydriding combustion synthesis procedure, in situ-formed Mg(2)NiH(4) could induce the absorption of MgH(2), thus triggering its hydrogen properties. Remarkable enhancement in hydrogen absorption properties of the composite was found. The composite absorbed 6.0 wt% H(2) within 5 min at 275 °C; moreover, even at 75 °C, it could still absorb 3.5 wt% H(2). Furthermore, it delivered a high reversible hydrogen absorption capacity of 6.2 wt% and excellent rate capability at 350 °C. It was also demonstrated that the composite could release 6.2 wt% H(2) at 350 °C within 5 min. A rather low activation energy value (65.9 kJ mol(−1)) for the dehydrogenation of MgH(2) was calculated as compared to that for commercial MgH(2) (133.5 kJ mol(−1)). |
format | Online Article Text |
id | pubmed-9084346 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90843462022-05-09 Enhanced H(2) sorption performance of magnesium hydride with hard-carbon-sphere-wrapped nickel Peng, Dandan Ding, Zhenmin Fu, Yaokun Wang, Yu Bi, Jia Li, Yuan Han, Shumin RSC Adv Chemistry Magnesium hydride is regarded as one of the most ideal candidates for hydrogen storage, but its relatively high operating temperatures and slow kinetics always hinder its commercial applications. Herein, we first fabricated hard-carbon-sphere-wrapped Ni (Ni/HCS) via a mild chemical method; subsequently, the as-prepared additive was introduced to fabricate an Mg–Ni/HCS composite by using hydriding combustion synthesis. Hard carbon spheres (HCS) effectively inhibited the agglomeration of hydride particles during hydrogen storage cycling; they could also provide active sites to promote the nucleation of Mg-based hydrides. During the hydriding combustion synthesis procedure, in situ-formed Mg(2)NiH(4) could induce the absorption of MgH(2), thus triggering its hydrogen properties. Remarkable enhancement in hydrogen absorption properties of the composite was found. The composite absorbed 6.0 wt% H(2) within 5 min at 275 °C; moreover, even at 75 °C, it could still absorb 3.5 wt% H(2). Furthermore, it delivered a high reversible hydrogen absorption capacity of 6.2 wt% and excellent rate capability at 350 °C. It was also demonstrated that the composite could release 6.2 wt% H(2) at 350 °C within 5 min. A rather low activation energy value (65.9 kJ mol(−1)) for the dehydrogenation of MgH(2) was calculated as compared to that for commercial MgH(2) (133.5 kJ mol(−1)). The Royal Society of Chemistry 2018-08-13 /pmc/articles/PMC9084346/ /pubmed/35542472 http://dx.doi.org/10.1039/c8ra05464a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Peng, Dandan Ding, Zhenmin Fu, Yaokun Wang, Yu Bi, Jia Li, Yuan Han, Shumin Enhanced H(2) sorption performance of magnesium hydride with hard-carbon-sphere-wrapped nickel |
title | Enhanced H(2) sorption performance of magnesium hydride with hard-carbon-sphere-wrapped nickel |
title_full | Enhanced H(2) sorption performance of magnesium hydride with hard-carbon-sphere-wrapped nickel |
title_fullStr | Enhanced H(2) sorption performance of magnesium hydride with hard-carbon-sphere-wrapped nickel |
title_full_unstemmed | Enhanced H(2) sorption performance of magnesium hydride with hard-carbon-sphere-wrapped nickel |
title_short | Enhanced H(2) sorption performance of magnesium hydride with hard-carbon-sphere-wrapped nickel |
title_sort | enhanced h(2) sorption performance of magnesium hydride with hard-carbon-sphere-wrapped nickel |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9084346/ https://www.ncbi.nlm.nih.gov/pubmed/35542472 http://dx.doi.org/10.1039/c8ra05464a |
work_keys_str_mv | AT pengdandan enhancedh2sorptionperformanceofmagnesiumhydridewithhardcarbonspherewrappednickel AT dingzhenmin enhancedh2sorptionperformanceofmagnesiumhydridewithhardcarbonspherewrappednickel AT fuyaokun enhancedh2sorptionperformanceofmagnesiumhydridewithhardcarbonspherewrappednickel AT wangyu enhancedh2sorptionperformanceofmagnesiumhydridewithhardcarbonspherewrappednickel AT bijia enhancedh2sorptionperformanceofmagnesiumhydridewithhardcarbonspherewrappednickel AT liyuan enhancedh2sorptionperformanceofmagnesiumhydridewithhardcarbonspherewrappednickel AT hanshumin enhancedh2sorptionperformanceofmagnesiumhydridewithhardcarbonspherewrappednickel |