Efek Penggunaan Cairan Ionik sebagai Aditif terhadap Konduktivitas Ionik Elektrolit Baterai Ion Litium

Abstract

Lithium ion battery technology is an alternative energy supply for portable equipment, electronics devices and high power applications such as electric vehicle and power storage for renewable energy. Electrolyte of lithium ion battery plays an important role in determining battery performance. It consists of lithium salt, commonly use lithium hexafluorophosphate (LiPF6), dissolved in organic carbonate solvent and additives. However, LiPF6 is thermally unstable and influence battery performance significantly. Moreover, the standard solvent also has some disadvantages on the electrical vehicle application. Because of this drawback, the selection of another lithium salt, lithium bis (trifluoromethylsulfonyl) imide (LiTFSI) combined with ionic liquid BMIMTFSI become a great importance. Therefore, in this study, ionic conductivity characteristics of liquid electrolyte based on LiTFSI was investigated. The ionic conductivity measurement of lithium bis (trifluoromethylsulfonyl) imide (LiTFSI) electrolyte in carbonate solvents with and without ionic liquid BMIMTFSI as an additive have been investigated. The ionic conductivity of LiTFSI with ionic liquid is larger than LiTFSI without ionic liquid as an additive, namely 3.1 mS/cm and 2.7 mS/cm.

Studi Literatur: Potensi Onggok Singkong dan Kulit Pisang sebagai Alternatif Elektrolit Baterai Ramah Lingkungan

“…Garam ini merupakan elektrolit kuat yang mampu terionisasi dan menghantarkan listrik sehingga kulit pisang bisa bertindak sebagai elektrolit pada baterai (Muhlisin et al, 2015). Keberadaan garam pada elektrolit baterai sangat penting karena dapat meningkatkan konduktivitas ionik sehingga menghasilkan transport ion yang lebih baik (Septiana, Kartini, Honggowiranto, Sudaryanto, & Hidayat, 2019). Garam kalium klorida akan terionisasi menjadi ion kalium dan klorida, sehingga bisa menghantarkan listrik.…”

Identification of the Interaction of Lithium Hexafluorophosphate Salt and Ethylene Carbonate (Ec) Solvent in Lithium Ion Battery Redox Events Using Classical Molecular Dynamics (Md) Simulation

“…The organic solvent propylene carbonate (PC) has an advantage over other organic carbonate solvents because of its low price and good performance at low temperatures. 3 However, the use of PC in lithium ion batteries has problems due to the cointercalation of solvent molecules with 𝐿𝑖 + ions on graphite and causing flaking. Organic solvents such as ethylene carbonate (EC) can form a solid electrolyte interface layer that is more stable than other organic solvents.…”

Effect of LiTFSI Electrolyte Salt Composition on Characteristics of PVDF-PEO-LiTFSI-Based Solid Polymer Electrolyte (SPE) for Lithium-Ion Battery

“…Related to this problem, using other lithium salts to replace LiPF6 has become very important, and LiTFSI is the most promising candidate as a substitute for LiPF6. LiTFSI can be used as an electrolyte in lithium-ion batteries due to its high conductivity, insensitivity to moisture, high thermal stability, and electrochemical stability compared to LiPF6 (Septiana, Kartini, Honggowiranto, Sudaryanto, & Hidayat, 2019). The ionic conductivity and lithium transfer number ideal of LiTFSI are above 10 -1 mS/cm (Goodenough & Kim, 2010); the ideal LTN is equal to 1 (Zhang et al, 2017); the cyclic voltammetry of electrolytes with imide additives display higher current densities between 4.5 and 5.3 V vs Li/Li + than the bare electrolyte (Sharova et al, 2018); CD analysis of LiTFI showed that charge-discharge occurs.…”