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WAHYU BAMBANG WIDAYATNO
Articles written in Bulletin of Materials Science
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Volume 45 All articles Published: 26 July 2022 Article ID 0147
SLAMET PRIYONO NOFRIJON SOFYAN DONANTA DHANESWARA WAHYU BAMBANG WIDAYATNO AKHMAD HERMAN YUWONO
This research investigates the effect of different precursor’s pH values on the fabrication of lithium titanate (Li$_4$Ti$_5$O$_{12}$) via sol–gel processing and its characteristics as an anode for lithium-ion batteries. The precursor solution of lithium acetate was dropped into titanium butoxide at various initial pH values of 0.14, 0.39 and 0.69. The study of synthesis of Li$_4$Ti$_5$O$_{12}$ in the extreme acid environment is rarely investigated. Thermogravimetry-differential thermal analyzer was used to examine the thermal profile of the dried Li$_4$Ti$_5$O$_{12}$ precursor to determine the required sintering temperature, while the crystal structure and morphology of the sintered samples were characterized using an X-ray diffractometer and scanning electron microscope. The thermal analysis shows that the precursor should be sintered at 850°C to acquire pure spinel Li$_4$Ti$_5$O$_{12}$ crystal. An investigation of the crystal structure shows that a higher purity of Li$_4$Ti$_5$O$_{12}$ phase with smaller crystallite is obtainable in a more acidic condition. The resultant products contain an agglomerated and irregular morphology with non-uniform size distribution. These results show that the sample with thehighest purity of Li$_4$Ti$_5$O$_{12}$ provides the best electrochemical performance, with a specific capacity of 100 mAh g$^{-1}$ at 0.1 C scanning rate and fast charging characteristics up to 10 C scanning rate.
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Bulletin of Materials Science
Volume 46, 2023
All articles
Continuous Article Publishing mode
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Bulletin of Materials Science | News
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Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020 -
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Posted on July 25, 2019Click here for Editorial Note on CAP Mode
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