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Nanoconfined NaAlH(4) Conversion Electrodes for Li Batteries
[Image: see text] In the past, sodium alanate, NaAlH(4), has been widely investigated for its capability to store hydrogen, and its potential for improving storage properties through nanoconfinement in carbon scaffolds has been extensively studied. NaAlH(4) has recently been considered for Li-ion st...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2017
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6641067/ https://www.ncbi.nlm.nih.gov/pubmed/31457554 http://dx.doi.org/10.1021/acsomega.7b00143 |
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author | Huen, Priscilla Peru, Filippo Charalambopoulou, Georgia Steriotis, Theodore A. Jensen, Torben R. Ravnsbæk, Dorthe B. |
author_facet | Huen, Priscilla Peru, Filippo Charalambopoulou, Georgia Steriotis, Theodore A. Jensen, Torben R. Ravnsbæk, Dorthe B. |
author_sort | Huen, Priscilla |
collection | PubMed |
description | [Image: see text] In the past, sodium alanate, NaAlH(4), has been widely investigated for its capability to store hydrogen, and its potential for improving storage properties through nanoconfinement in carbon scaffolds has been extensively studied. NaAlH(4) has recently been considered for Li-ion storage as a conversion-type anode in Li-ion batteries. Here, NaAlH(4) nanoconfined in carbon scaffolds as an anode material for Li-ion batteries is reported for the first time. Nanoconfined NaAlH(4) was prepared by melt infiltration into mesoporous carbon scaffolds. In the first cycle, the electrochemical reversibility of nanoconfined NaAlH(4) was improved from around 30 to 70% compared to that of nonconfined NaAlH(4). Cyclic voltammetry revealed that nanoconfinement alters the conversion pathway, and operando powder X-ray diffraction showed that the conversion from NaAlH(4) into Na(3)AlH(6) is favored over the formation of LiNa(2)AlH(6). The electrochemical reactivity of the carbon scaffolds has also been investigated to study their contribution to the overall capacity of the electrodes. |
format | Online Article Text |
id | pubmed-6641067 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-66410672019-08-27 Nanoconfined NaAlH(4) Conversion Electrodes for Li Batteries Huen, Priscilla Peru, Filippo Charalambopoulou, Georgia Steriotis, Theodore A. Jensen, Torben R. Ravnsbæk, Dorthe B. ACS Omega [Image: see text] In the past, sodium alanate, NaAlH(4), has been widely investigated for its capability to store hydrogen, and its potential for improving storage properties through nanoconfinement in carbon scaffolds has been extensively studied. NaAlH(4) has recently been considered for Li-ion storage as a conversion-type anode in Li-ion batteries. Here, NaAlH(4) nanoconfined in carbon scaffolds as an anode material for Li-ion batteries is reported for the first time. Nanoconfined NaAlH(4) was prepared by melt infiltration into mesoporous carbon scaffolds. In the first cycle, the electrochemical reversibility of nanoconfined NaAlH(4) was improved from around 30 to 70% compared to that of nonconfined NaAlH(4). Cyclic voltammetry revealed that nanoconfinement alters the conversion pathway, and operando powder X-ray diffraction showed that the conversion from NaAlH(4) into Na(3)AlH(6) is favored over the formation of LiNa(2)AlH(6). The electrochemical reactivity of the carbon scaffolds has also been investigated to study their contribution to the overall capacity of the electrodes. American Chemical Society 2017-05-10 /pmc/articles/PMC6641067/ /pubmed/31457554 http://dx.doi.org/10.1021/acsomega.7b00143 Text en Copyright © 2017 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Huen, Priscilla Peru, Filippo Charalambopoulou, Georgia Steriotis, Theodore A. Jensen, Torben R. Ravnsbæk, Dorthe B. Nanoconfined NaAlH(4) Conversion Electrodes for Li Batteries |
title | Nanoconfined NaAlH(4) Conversion Electrodes
for Li Batteries |
title_full | Nanoconfined NaAlH(4) Conversion Electrodes
for Li Batteries |
title_fullStr | Nanoconfined NaAlH(4) Conversion Electrodes
for Li Batteries |
title_full_unstemmed | Nanoconfined NaAlH(4) Conversion Electrodes
for Li Batteries |
title_short | Nanoconfined NaAlH(4) Conversion Electrodes
for Li Batteries |
title_sort | nanoconfined naalh(4) conversion electrodes
for li batteries |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6641067/ https://www.ncbi.nlm.nih.gov/pubmed/31457554 http://dx.doi.org/10.1021/acsomega.7b00143 |
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