Is Li sub(4)Ti sub(5)O sub(12) a solid-electrolyte-interphase-free electrode material in Li-ion batteries? Reactivity between the Li sub(4)Ti sub(5)O sub(12) electrode and electrolyte

Does the Li sub(4)Ti sub(5)O sub(12) electrode need a carbon additive in lithium-ion batteries? We answered this question in our previous work by showing that the partially reduced Ti super(4+) on the surface of Li sub(4)Ti sub(5)O sub(12) could provide enough electronic conductivity to initiate the...

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Veröffentlicht in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2013-12, Vol.2 (3), p.631-636
Hauptverfasser: Song, Min-Sang, Kim, Ryoung-Hee, Baek, Seung-Wook, Lee, Kug-Seung, Park, Kyusung, Benayad, Anass
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container_issue 3
container_start_page 631
container_title Journal of materials chemistry. A, Materials for energy and sustainability
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creator Song, Min-Sang
Kim, Ryoung-Hee
Baek, Seung-Wook
Lee, Kug-Seung
Park, Kyusung
Benayad, Anass
description Does the Li sub(4)Ti sub(5)O sub(12) electrode need a carbon additive in lithium-ion batteries? We answered this question in our previous work by showing that the partially reduced Ti super(4+) on the surface of Li sub(4)Ti sub(5)O sub(12) could provide enough electronic conductivity to initiate the electrochemical process. In this work, we discuss the generally accepted fact that a solid electrolyte interphase (SEI) is hardly formed on the surface of the Li sub(4)Ti sub(5)O sub(12) electrode owing to its high redox potential by using the carbon-free Li sub(4)Ti sub(5)O sub(12) electrode to exclude the influences of carbon. In contrast to the previous argument, Li sub(4)Ti sub(5)O sub(12) was found to have certain reactivity towards electrolytes at room and high temperature (60 degree C). Moreover, in the presence of carbon in the electrode (i.e.the conventional electrode formulation), the reactivity of the electrode towards an electrolyte was significantly increased at high temperatures. These results were discussed based on surface analyses and electrode morphology observation before and after cycling, and correlated with the electrochemical performance.
doi_str_mv 10.1039/c3ta12728a
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Reactivity between the Li sub(4)Ti sub(5)O sub(12) electrode and electrolyte</title><source>Royal Society Of Chemistry Journals</source><source>Alma/SFX Local Collection</source><creator>Song, Min-Sang ; Kim, Ryoung-Hee ; Baek, Seung-Wook ; Lee, Kug-Seung ; Park, Kyusung ; Benayad, Anass</creator><creatorcontrib>Song, Min-Sang ; Kim, Ryoung-Hee ; Baek, Seung-Wook ; Lee, Kug-Seung ; Park, Kyusung ; Benayad, Anass</creatorcontrib><description>Does the Li sub(4)Ti sub(5)O sub(12) electrode need a carbon additive in lithium-ion batteries? We answered this question in our previous work by showing that the partially reduced Ti super(4+) on the surface of Li sub(4)Ti sub(5)O sub(12) could provide enough electronic conductivity to initiate the electrochemical process. In this work, we discuss the generally accepted fact that a solid electrolyte interphase (SEI) is hardly formed on the surface of the Li sub(4)Ti sub(5)O sub(12) electrode owing to its high redox potential by using the carbon-free Li sub(4)Ti sub(5)O sub(12) electrode to exclude the influences of carbon. In contrast to the previous argument, Li sub(4)Ti sub(5)O sub(12) was found to have certain reactivity towards electrolytes at room and high temperature (60 degree C). Moreover, in the presence of carbon in the electrode (i.e.the conventional electrode formulation), the reactivity of the electrode towards an electrolyte was significantly increased at high temperatures. 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source Royal Society Of Chemistry Journals; Alma/SFX Local Collection
subjects Carbon
Cycles
Electrodes
Electrolytes
Electronics
Lithium-ion batteries
Solid electrolytes
Sustainability
title Is Li sub(4)Ti sub(5)O sub(12) a solid-electrolyte-interphase-free electrode material in Li-ion batteries? Reactivity between the Li sub(4)Ti sub(5)O sub(12) electrode and electrolyte
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