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|Title:||Pechini process-derived tin oxide and tin oxide-graphite composites for lithium-ion batteries|
|Citation:||Zhang, R., Lee, J.Y., Liu, Z.L. (2002-11-14). Pechini process-derived tin oxide and tin oxide-graphite composites for lithium-ion batteries. Journal of Power Sources 112 (2) : 596-605. ScholarBank@NUS Repository. https://doi.org/10.1016/S0378-7753(02)00483-4|
|Abstract:||The Pechini process [Ceram. Bull. 68 (1989) 1002] is used to obtain fine tin oxide powders that reduce the specific volume change in Li+ insertion and extraction reactions. The suitability of these tin oxides as active materials for negative electrodes in lithium-ion batteries is investigated. From elemental analysis, it is found that the templating polymer network is almost completely obliterated after heating at 500 °C. The best tin oxide does not exhibit extensive crystallization of tin atoms even after 30 cycles of alloying and de-alloying reactions with Li. The structure and the specific capacity of the oxides are dependent on the heat treatment and remnants of the polymeric C-H network can impose an unfavorable outcome. A capacity of 600 mAhg-1, which is unchanged for 30 cycles, can be obtained from tin oxide heat treated at 1000 °C. Composites of graphite and SnO2 are also prepared and exhibit synergistic interactions between graphite and tin oxide which are similar to those reported previously [Electrochem. Solid State Lett. 3 (2000) 167]. © 2002 Elsevier Science B.V. All rights reserved.|
|Source Title:||Journal of Power Sources|
|Appears in Collections:||Staff Publications|
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