Optimizing Performance of Li₄Ti₅O₁₂ (LTO) by Addition of Sn Microparticle in High Loading as Anode for Lithium-Ion Batteries

Abstract:

Li₄Ti₅O₁₂/Sn was successfully synthesized by a solid-state method using the High Energy Ball Mill Machine as anode for Lithium-Ion batteries. The addition of various (10%, 20%, 30%) Sn-micro particle is aimed to enhance LTO's conductivity and capacity. Characterization of the sample's structure was performed using X-ray diffraction (XRD), which expose the presence of TiO2 rutile and Sn in each sample. The surface area of samples observed using Brunner-Emmet-Teller (BET), which indicates the different surface area of each Sn addition. Scanning electron microscopy (SEM) suggested agglomeration and poor distribution appear in every sample. Cyclic voltammetry (CV) was performed to measure the battery's performance. Two peaks occur as a sign of reversible reaction. The impedance of Li₄Ti₅O₁₂/Sn measured using electrochemical impedance spectroscopy (EIS), the test performed before and after Cyclic voltammetry (CV), each test showed the different result for each sample. Other than EIS and CV, Charge-Discharge (CD) also performed, examinations in different C-rate were performed, and higher Sn concentration leads to lower stability in high C. The result reveals that the addition of 20% Sn optimizes Li₄Ti₅O₁₂ in enhancing capacity and conductivity.

• Periodical: Materials Science Forum (Volume 1000)
• Pages: 20-30
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1000.20
• Online since: July 2020
• Authors: Bambang Priyono*, Reza Miftahul Ulum, Anne Zulfia, Stefanie Trixie, Heri Jodi, Laksamana Zakiy Ramadhan, Achmad Subhan
• Keywords: Li₄Ti₅O₁₂ Anode, LTO Composite, Pulverization, Solid State, Tin

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