Sn 0.1 -Li 4 Ti 5 O 12 /C as a promising cathode material with a large capacity and high rate performance for Mg-Li hybrid batteries
The development prospects of conventional Li-ion batteries are limited by the paucity of Li resources. Mg-Li hybrid batteries (MLIBs) combine the advantages of Li-ion batteries and magnesium batteries. Li can migrate rapidly in the cathode materials, and the Mg anode has the advantage of being dendr...
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Published in | Dalton transactions : an international journal of inorganic chemistry Vol. 53; no. 5; pp. 2055 - 2064 |
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Main Authors | , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
England
30.01.2024
|
Online Access | Get full text |
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Summary: | The development prospects of conventional Li-ion batteries are limited by the paucity of Li resources. Mg-Li hybrid batteries (MLIBs) combine the advantages of Li-ion batteries and magnesium batteries. Li
can migrate rapidly in the cathode materials, and the Mg anode has the advantage of being dendrite-free. In this study, a type of Li
Ti
O
composite material doped with Sn
and a conductive carbon skeleton (Li
Ti
Sn
O
/C, Sn
-LTO/C) was prepared by a simple one-pot sol-gel method. The doped Sn
replaces part of Ti
in the crystal lattice, which makes Ti
require charge compensation, thus improving the ionic conductivity. The intervention of the conductive carbon skeleton further improves the conductivity of the Sn
-LTO/C composite material. The performance of Sn
-LTO/C as the cathode of MLIBs is explored. The initial discharge capacity was 159.1 mA h g
at 0.5 C, and it was maintained at 105 mA h g
even after 500 cycles. The excellent electrochemical performance is attributed to a small amount of Sn doping and the involvement of the conductive carbon skeleton, which indicated that the Sn
-LTO/C composite material provides great potential application in MLIBs. |
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ISSN: | 1477-9226 1477-9234 |
DOI: | 10.1039/D3DT02502K |