Additive Destabilization of Porous Magnesium Borohydride Framework with Core-Shell Structure
Abstract
Design of interfaces with thermodynamic and kinetic specificity is of great importance for hydrogen storage from both an applied and fundamental perspective. Here, in order to destabilize the metal hydride and protect the dehydrogenated products from oxidizing, a unique core-shell structure of porous Mg(BH4)2-based framework with a thin layer (no more than 5 nm) of MgCl2 additives on the surface, has been proposed and synthesized via a wet-chemical method. The local structure and electronic state of the present complex system are systematically investigated to understand the correlation between the distribution of additives and dehydrogenation property of Mg(BH4)2. A significant improvement is achieved for hydrogen desorption with chlorides: initial hydrogen release from MgCl2 decorated ..gamma..-phase Mg(BH4)2 particles commences at 100 °C and reaches a maximum of 9.4 wt% at 385 °C. Besides the decreased decomposition temperature, an activation barrier of about 76.4 kJ mol-1 lower than that of Mg(BH4)2 without MgCl2 is obtained. Moreover, MgCl2 decoration can also prevent the whole decomposed system (both Mg- and B- elements) from oxidizing, which is a necessary condition to reversibility.
- Authors:
-
[1];
[1];
[3];
[1];
[1];
[5];
[6];
[1]
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Korea Inst. of Science and Technology, Seoul (Korea, Republic of)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- Korea Inst. of Science and Technology, Seoul (Korea, Republic of)
- National Renewable Energy Lab. (NREL), Golden, CO (United States); Colorado School of Mines, Golden, CO (United States)
- Sandia National Lab. (SNL-CA), Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Fuel Cell Technologies Office; National Research Foundation of Korea (NRF)
- OSTI Identifier:
- 1825019
- Alternate Identifier(s):
- OSTI ID: 1822537; OSTI ID: 1824295
- Report Number(s):
- NREL/JA-5900-79660
Journal ID: ISSN 1613-6810; ark:/13030/qt86w0m3bp; TRN: US2215764
- Grant/Contract Number:
- AC02-05CH11231; NA0003525; AC04-94AL85000; AC52-07NA27344; AC36-08GO28308; 2020M3H4A3106354; DE‐NA‐0003525; DE‐AC02‐05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Small
- Additional Journal Information:
- Journal Volume: 17; Journal Issue: 44; Journal ID: ISSN 1613-6810
- Publisher:
- Wiley
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 74 ATOMIC AND MOLECULAR PHYSICS; additive destabilization; magnesium borohydride
Citation Formats
Dun, Chaochao, Jeong, Sohee, Liu, Yi‐Sheng, Leick, Noemi, Mattox, Tracy M., Guo, Jinghua, Lee, Joo‐Won, Gennett, Thomas, Stavila, Vitalie, and Urban, Jeffrey J. Additive Destabilization of Porous Magnesium Borohydride Framework with Core-Shell Structure. United States: N. p., 2021.
Web. doi:10.1002/smll.202101989.
Dun, Chaochao, Jeong, Sohee, Liu, Yi‐Sheng, Leick, Noemi, Mattox, Tracy M., Guo, Jinghua, Lee, Joo‐Won, Gennett, Thomas, Stavila, Vitalie, & Urban, Jeffrey J. Additive Destabilization of Porous Magnesium Borohydride Framework with Core-Shell Structure. United States. https://doi.org/10.1002/smll.202101989
Dun, Chaochao, Jeong, Sohee, Liu, Yi‐Sheng, Leick, Noemi, Mattox, Tracy M., Guo, Jinghua, Lee, Joo‐Won, Gennett, Thomas, Stavila, Vitalie, and Urban, Jeffrey J. Mon .
"Additive Destabilization of Porous Magnesium Borohydride Framework with Core-Shell Structure". United States. https://doi.org/10.1002/smll.202101989. https://www.osti.gov/servlets/purl/1825019.
@article{osti_1825019,
title = {Additive Destabilization of Porous Magnesium Borohydride Framework with Core-Shell Structure},
author = {Dun, Chaochao and Jeong, Sohee and Liu, Yi‐Sheng and Leick, Noemi and Mattox, Tracy M. and Guo, Jinghua and Lee, Joo‐Won and Gennett, Thomas and Stavila, Vitalie and Urban, Jeffrey J.},
abstractNote = {Design of interfaces with thermodynamic and kinetic specificity is of great importance for hydrogen storage from both an applied and fundamental perspective. Here, in order to destabilize the metal hydride and protect the dehydrogenated products from oxidizing, a unique core-shell structure of porous Mg(BH4)2-based framework with a thin layer (no more than 5 nm) of MgCl2 additives on the surface, has been proposed and synthesized via a wet-chemical method. The local structure and electronic state of the present complex system are systematically investigated to understand the correlation between the distribution of additives and dehydrogenation property of Mg(BH4)2. A significant improvement is achieved for hydrogen desorption with chlorides: initial hydrogen release from MgCl2 decorated ..gamma..-phase Mg(BH4)2 particles commences at 100 °C and reaches a maximum of 9.4 wt% at 385 °C. Besides the decreased decomposition temperature, an activation barrier of about 76.4 kJ mol-1 lower than that of Mg(BH4)2 without MgCl2 is obtained. Moreover, MgCl2 decoration can also prevent the whole decomposed system (both Mg- and B- elements) from oxidizing, which is a necessary condition to reversibility.},
doi = {10.1002/smll.202101989},
journal = {Small},
number = 44,
volume = 17,
place = {United States},
year = {Mon Sep 27 00:00:00 EDT 2021},
month = {Mon Sep 27 00:00:00 EDT 2021}
}
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