Nanoconfined NaAlH4 Conversion Electrodes for Li Batteries

Priscilla Huen, Filippo Peru, Georgia Charalambopoulou, Theodore A. Steriotis, Torben R. Jensen, Dorthe B. Ravnsbæk*

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Resumé

In the past, sodium alanate, NaAlH4, 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. NaAlH4 has recently been considered for Li-ion storage as a conversion-Type anode in Li-ion batteries. Here, NaAlH4 nanoconfined in carbon scaffolds as an anode material for Li-ion batteries is reported for the first time. Nanoconfined NaAlH4 was prepared by melt infiltration into mesoporous carbon scaffolds. In the first cycle, the electrochemical reversibility of nanoconfined NaAlH4 was improved from around 30 to 70% compared to that of nonconfined NaAlH4. Cyclic voltammetry revealed that nanoconfinement alters the conversion pathway, and operando powder X-ray diffraction showed that the conversion from NaAlH4 into Na3AlH6 is favored over the formation of LiNa2AlH6. The electrochemical reactivity of the carbon scaffolds has also been investigated to study their contribution to the overall capacity of the electrodes.

OriginalsprogEngelsk
TidsskriftACS Omega
Vol/bind2
Udgave nummer5
Sider (fra-til)1956-1967
Antal sider12
ISSN2470-1343
DOI
StatusUdgivet - 2017

Fingeraftryk

Scaffolds
Electrodes
Carbon
Anodes
Infiltration
X ray powder diffraction
Cyclic voltammetry
Sodium
Hydrogen
sodium aluminum hydride
Ions
Lithium-ion batteries

Citer dette

Huen, P., Peru, F., Charalambopoulou, G., Steriotis, T. A., Jensen, T. R., & Ravnsbæk, D. B. (2017). Nanoconfined NaAlH4 Conversion Electrodes for Li Batteries. ACS Omega, 2(5), 1956-1967. https://doi.org/10.1021/acsomega.7b00143
Huen, Priscilla ; Peru, Filippo ; Charalambopoulou, Georgia ; Steriotis, Theodore A. ; Jensen, Torben R. ; Ravnsbæk, Dorthe B. / Nanoconfined NaAlH4 Conversion Electrodes for Li Batteries. I: ACS Omega. 2017 ; Bind 2, Nr. 5. s. 1956-1967.
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title = "Nanoconfined NaAlH4 Conversion Electrodes for Li Batteries",
abstract = "In the past, sodium alanate, NaAlH4, 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. NaAlH4 has recently been considered for Li-ion storage as a conversion-Type anode in Li-ion batteries. Here, NaAlH4 nanoconfined in carbon scaffolds as an anode material for Li-ion batteries is reported for the first time. Nanoconfined NaAlH4 was prepared by melt infiltration into mesoporous carbon scaffolds. In the first cycle, the electrochemical reversibility of nanoconfined NaAlH4 was improved from around 30 to 70{\%} compared to that of nonconfined NaAlH4. Cyclic voltammetry revealed that nanoconfinement alters the conversion pathway, and operando powder X-ray diffraction showed that the conversion from NaAlH4 into Na3AlH6 is favored over the formation of LiNa2AlH6. The electrochemical reactivity of the carbon scaffolds has also been investigated to study their contribution to the overall capacity of the electrodes.",
author = "Priscilla Huen and Filippo Peru and Georgia Charalambopoulou and Steriotis, {Theodore A.} and Jensen, {Torben R.} and Ravnsb{\ae}k, {Dorthe B.}",
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Huen, P, Peru, F, Charalambopoulou, G, Steriotis, TA, Jensen, TR & Ravnsbæk, DB 2017, 'Nanoconfined NaAlH4 Conversion Electrodes for Li Batteries', ACS Omega, bind 2, nr. 5, s. 1956-1967. https://doi.org/10.1021/acsomega.7b00143

Nanoconfined NaAlH4 Conversion Electrodes for Li Batteries. / Huen, Priscilla; Peru, Filippo; Charalambopoulou, Georgia; Steriotis, Theodore A.; Jensen, Torben R.; Ravnsbæk, Dorthe B.

I: ACS Omega, Bind 2, Nr. 5, 2017, s. 1956-1967.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Nanoconfined NaAlH4 Conversion Electrodes for Li Batteries

AU - Huen, Priscilla

AU - Peru, Filippo

AU - Charalambopoulou, Georgia

AU - Steriotis, Theodore A.

AU - Jensen, Torben R.

AU - Ravnsbæk, Dorthe B.

PY - 2017

Y1 - 2017

N2 - In the past, sodium alanate, NaAlH4, 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. NaAlH4 has recently been considered for Li-ion storage as a conversion-Type anode in Li-ion batteries. Here, NaAlH4 nanoconfined in carbon scaffolds as an anode material for Li-ion batteries is reported for the first time. Nanoconfined NaAlH4 was prepared by melt infiltration into mesoporous carbon scaffolds. In the first cycle, the electrochemical reversibility of nanoconfined NaAlH4 was improved from around 30 to 70% compared to that of nonconfined NaAlH4. Cyclic voltammetry revealed that nanoconfinement alters the conversion pathway, and operando powder X-ray diffraction showed that the conversion from NaAlH4 into Na3AlH6 is favored over the formation of LiNa2AlH6. The electrochemical reactivity of the carbon scaffolds has also been investigated to study their contribution to the overall capacity of the electrodes.

AB - In the past, sodium alanate, NaAlH4, 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. NaAlH4 has recently been considered for Li-ion storage as a conversion-Type anode in Li-ion batteries. Here, NaAlH4 nanoconfined in carbon scaffolds as an anode material for Li-ion batteries is reported for the first time. Nanoconfined NaAlH4 was prepared by melt infiltration into mesoporous carbon scaffolds. In the first cycle, the electrochemical reversibility of nanoconfined NaAlH4 was improved from around 30 to 70% compared to that of nonconfined NaAlH4. Cyclic voltammetry revealed that nanoconfinement alters the conversion pathway, and operando powder X-ray diffraction showed that the conversion from NaAlH4 into Na3AlH6 is favored over the formation of LiNa2AlH6. The electrochemical reactivity of the carbon scaffolds has also been investigated to study their contribution to the overall capacity of the electrodes.

U2 - 10.1021/acsomega.7b00143

DO - 10.1021/acsomega.7b00143

M3 - Journal article

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SP - 1956

EP - 1967

JO - ACS Omega

JF - ACS Omega

SN - 2470-1343

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Huen P, Peru F, Charalambopoulou G, Steriotis TA, Jensen TR, Ravnsbæk DB. Nanoconfined NaAlH4 Conversion Electrodes for Li Batteries. ACS Omega. 2017;2(5):1956-1967. https://doi.org/10.1021/acsomega.7b00143