| 학회 |
한국화학공학회 |
| 학술대회 |
2020년 가을 (10/14 ~ 10/16, e-컨퍼런스) |
| 권호 |
26권 1호, p.642 |
| 발표분야 |
재료 |
| 제목 |
Direct Regeneration of Nanoconfined LiAlH4 in N-functionalized Scaffold for Reversible Hydrogen Storage |
| 초록 |
LiAlH4 has garnered considerable interests as a high capacity hydrogen storage material. In spite of this advantage, the inferior reversibility of LiAlH4 severely hinders from taking full advantage of such high capacity. The direct regeneration of LiAlH4 under pressurized hydrogen without the use of solvents has rarely been done. Here, we prepared nanoconfined LiAlH4 in N-functionalized/non-functionalized mesoporous carbon scaffold via the solvent infiltration for sustainable high-performance hydrogen storage. The change of hydrogen desorption properties is studied for the nanoconfined LiAlH4 to investigate an effect of carbon scaffold. LiAlH4@NCMK-3 exhibits a reduction of the desorption onset temperature and the partial recovery of LiAlH4. A theoretical study revealed that there is a strong Li-N interaction induced by the N-functionalities, offering the thermodynamic tuning of the nanoconfined LiAlH4 system. This suggests that metastable hydrides, which have not been considered as candidates for a practical system, could also be a viable alternative for a sustainable hydrogen storage platform. |
| 저자 |
조용준1, Sichi Li2, Vitalie Stavila3, Brandon C. Wood4, 조은선2
|
| 소속 |
1KAIST, 2Material Science Division, 3Lawrence Livermore National Laboratory, 4Sandia National Laboratories |
| 키워드 |
화공재료 |
| E-Mail |
|
| 원문파일 |
초록 보기 |
