Hydrogen Storage in Ni/graphene and Pd/graphene Nanomaterials
| dc.contributor.advisor | Szpunar, Jerzy A | |
| dc.contributor.committeeMember | Hu, Yongfeng | |
| dc.contributor.committeeMember | Wang, Hui | |
| dc.contributor.committeeMember | Oguocha, Ikechukwuka | |
| dc.contributor.committeeMember | Szyszkowski, Walerian | |
| dc.creator | Zhou, Chunyu | |
| dc.creator.orcid | 0000-0003-2053-7086 | |
| dc.date.accessioned | 2017-03-07T19:39:10Z | |
| dc.date.available | 2017-03-07T19:39:10Z | |
| dc.date.created | 2016-12 | |
| dc.date.issued | 2017-03-07 | |
| dc.date.submitted | December 2016 | |
| dc.date.updated | 2017-03-07T19:39:11Z | |
| dc.description.abstract | Hydrogen is a promising energy carrier that could be an alternative to the traditional carbon based fuels. Hydrogen storage in the Ni/graphene and Pd/graphene systems was investigated in the present work using Thermogravimetric Analysis (TGA). A laboratory apparatus was designed, built and applied for hydrogenation under pressure. Novel synthesis methods were developed to synthesize the graphene-based composites. Multiple characterizations have been performed to understand the sorbent structures, including the component determination and distribution, chemical state, electronic structure and metal-graphene interfaces. The hydrogen storage behavior was determined, and a hypothesis was proposed to explain the hydrogen performance in the sorbents. The Ni/graphene (5 at.% Ni, atomic percentage; 100 at.% : Ni + C) composite, charged with H2 pressure under 1 and 60 bar desorbed 0.14 wt.% H2 and 1.18 wt.%, respectively, in a TGA apparatus under a flow of argon, at room temperature. The hydrogen release could occur at an operating temperature below 150°C and was completed at 250°C. The Pd/graphene (1 at.% Pd, 100 at.% : Pd + C) composite, charged under H2 pressure of 50 and 60 bar released 6.7 and 8.67 wt.% H2, respectively, in a TGA apparatus under a flow of argon, at room temperature. The 5%Pd/graphene (5 at.% Pd, 100 at.% : Pd + C) composite charged under 60 bar H2 and dehydrogenated under the same conditions in a TGA apparatus, released 7.16 wt.% H2. The composites could discharge hydrogen below 100°C and complete the process up to 200°C. The Pd/graphene system releases relatively high hydrogen storage capacity in TGA. | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.uri | http://hdl.handle.net/10388/7775 | |
| dc.subject | Hydrogen, Ni/graphene, Pd/graphene | |
| dc.title | Hydrogen Storage in Ni/graphene and Pd/graphene Nanomaterials | |
| dc.type | Thesis | |
| dc.type.material | text | |
| thesis.degree.department | Mechanical Engineering | |
| thesis.degree.discipline | Mechanical Engineering | |
| thesis.degree.grantor | University of Saskatchewan | |
| thesis.degree.level | Doctoral | |
| thesis.degree.name | Doctor of Philosophy (Ph.D.) |