PENGARUH ADITIF MALEIMIDE BINER PADA PERFORMANSI BATERAI LITHIUM DENGAN GRAPHENE OXIDE SEBAGAI ANODA
Abstract
Penelitian ini menjelaskan tentang modifikasi aditif maleimide dengan gugus fungsi fluorine yang digunakan pada elektrolit baterai lithium berbasis silikon-graphene. Elektrolit 1.0 M LiPF6 dalam Etilen Karbonat (EC): Etilen Metil Karbonat (EMC) (1:2 perbandingan volume) terkandung 1.0 wt% 2F-MI digunakan untuk memicu pembentukan lapisan SEI (solid electrolyte interface) dan untuk meminimalisir terjadinya pengembangan volume pada partikel silikon. Lapisan SEI unik yang terbentuk membatasi terjadinya retak pada morfologi partikel silikon saat proses interkalasi berlangsung. Melalui pengujian elektrokimia menggunakan cyclic voltammetry, spesifik reduksi potensial dari 2F-MI terjadi pada rentang 2.27 – 2.31 V. Lebih lanjut, penambahan aditif 2F-MI dapat menurunkan nilai ketidakbalikan dari 65.99% menjadi 55.52%. Selain itu penambahan aditif 2F-MI mampu meningkatkan performa dan kestabilan charge-discharge hingga siklus ke-22.
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References
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