Effect of doping and crystallite size on the electrochemical performance of Li4Ti5O12
Karhunen, T., Välikangas, J., Torvela, T., Lähde, A., Lassi, U., & Jokiniemi, J. (2016). Effect of doping and crystallite size on the electrochemical performance of Li4Ti5O12. Journal of Alloys and Compounds, 659, 132-137. https://doi.org/10.1016/j.jallcom.2015.10.125
Published inJournal of Alloys and Compounds
© 2016 Elsevier. This is a pre-print version of an article whose final and definitive form has been published by Elsevier. Published in this repository with the kind permission of the publisher.
Defect spinel phase lithium titanate (Li4Ti5O12) has been suggested as a promising negative electrode material for next generation lithium ion batteries. Flame spray pyrolysis has been shown to be a viable fast, one-step process for synthesis of nanoparticulate Li4Ti5O12. However, due to the rapid quenching that is integral to the process the crystallite size remain very small and non-uniform. To overcome this shortcoming a vertical flow tube furnace was used to increase the high-temperature residence time. This resulted in an increase in the crystallite size and crystallinity of the product. As a result of this increase the electrochemical performance of the Li4Ti5O12 was markedly improved. Furthermore, silver doping of the Li4Ti5O12 material can be carried out simultaneously with its synthesis in the FSP process. The resulting nanosized silver particles on the surface of the Li4Ti5O12 particles further improve the electrochemical performance during high current operations. The specific capacities of these high-temperature synthesised pure and silver-doped Li4Ti5O12 nanoparticles were found to increase by up to 6% and 19%, respectively, compared to a commercial reference. Thus the technique provides a simple method for synthesising superior quality Li4Ti5O12 for battery applications. ...
Publication in research information system
MetadataShow full item record
Showing items with similar title or keywords.
Effects of weight reduction on body composition, hormone concentrations and physical performance in female track and field jumpers during a preparatory and competition season Lällä, Sini (2019)Introduction. Weight reduction is common and generally accepted among obese people, but nowadays also a general practice among athletes. There are many reasons for athletes to reduce weight: to increase physical performance, ...
Mero, Antti A.; Ojala, Tuomo AM; Hulmi, Juha J.; Puurtinen, Risto; Seppälä, Timo (BioMed Central, 2010)Background. Alfa-Hydroxy-isocaproic acid (HICA) is an end product of leucine metabolism in human tissues such as muscle and connective tissue. According to the clinical and experimental studies, HICA can be considered as ...
Myllyaho, Moona (2016)The purpose of the present study was to examine the effects of hormonal contraceptive use on neuromuscular, cardiorespiratory and body composition adaptations following combined strength and endurance training period. Methods. ...
The effects of periodized resistance training on the neuromuscular performance, body composition and balance control among older and young adults Manlangit, Pastor Jr (2019)Strength, power and muscle mass decline with age. These declines lead to poorer balance and increased risk for falls. Intervention studies using a periodized resistance training (RT) among the older are limited, despite ...
Poranen-Clark, Taina (Jyväskylän yliopisto, 2018)We studied cross-sectional, longitudinal and temporal associations between executive function and life-space mobility in old age. We assessed the association between intellectual ability in early adulthood and physical ...