STUDY OF ELECTROCHEMICAL PERFORMANCE OF LIFEPO4 AND GRAPHITE ELECTRODES WITH EC/DMC ELECTROLYTE IN LI-ION BATTERIES

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Salimi Pejman; JAVADIAN SOHEILA; Kakemam Jamal

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Seminar Paper

Paper Information

Seminar: ANNUAL ELECTROCHEMISTRY SEMINAR OF IRAN
Year:2015 | Issue:11

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Title

STUDY OF ELECTROCHEMICAL PERFORMANCE OF LIFEPO4 AND GRAPHITE ELECTRODES WITH EC/DMC ELECTROLYTE IN LI-ION BATTERIES

Author(s)

Salimi Pejman | JAVADIAN SOHEILA | Kakemam Jamal | Issue Writer Certificate

Keywords

LITHIUM-ION BATTERIES

LIFEPO4

GRAPHITE

DISCHARGE CAPACITY

AND CYCLEABILITY

Abstract

THE DEMAND FOR REACHARGEABLE BATTERIES WITH LONGER CYCLE-LIVES AND HIGHER PERFORMANCE FOR MODERN ELECTRICAL DEVICES HAS BEEN INCREASINGLY DEVELOPED. FOR MANY YEARS, THESE NEEDS HAVE BEEN MET BY VARIANTS OF THE LITHIUM-ION BATTERY THAT HAS BEEN FIRST COMMERCIALIZED BY SONY [1].RECENTLY, LIFEPO4 HAS BEEN INVESTIGATED INTENSIVELY AS A POTENTIAL CATHODE MATERIAL FOR RECHARGEABLE LI-ION BATTERIES BECAUSE OF ITS LOW COST AND IMPROVED SAFETY [2-5]. THE PERFORMANCE OF INDUSTRIAL ELECTRODES, LITHIUM IRON (II) PHOSPHATE, LIFEPO4, AS A CATHODE MATERIAL AND GRAPHITE AS AN ANODE IN A LITHIUM SECONDARY BATTERY WAS EVALUATED USING CONVENTIONAL ELECTROCHEMICAL ANALYSES SUCH AS CYCLIC VOLTAMMETRY, CHARGE-DISCHARGE PROFILE, AND ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY (EIS). BOTH ANODE AND CATHODE MATERIALS WERE TESTED IN HALF CELL SEPARATELY VERSUS LI/LI+ AS REFERENCE ELECTRODE. A CONVENTIONAL SOLVENT SUCH AS ETHYLENE CARBONATE AND DIMETHYL CARBONATE (EC/DMC; 1: 1 V/V %) WITH 1M LIPF6 WERE USED IN ALL TESTS. THE EIS MEASUREMENTS SHOWED AN ELIGIBLE RESISTANCE VALUE FOR BOTH ANODE AND CATHODE ELECTRODES. CV STUDIES OF THESE SYSTEM WERE ALSO DONE IN WHICH THE PEAK CURRENT WAS NOT NOTICEABLY CHANGED DURING FIRST CYCLES.HALF WAVE POTENTIAL AND THE INTENSITY OF PEAKS CONFIRMED THE MECHANISM OF INSERTION/DELETION OF LITHIUM INTO WORKING ELECTRODE AS REDOX MECHANISM IN LIB’S. THE SPECIFIC CAPACITY AND CYCLIC STABILITY WERE ALSO INVESTIGATED AT 0.1 C-RATES, AT ROOM TEMPERATURE. THE DISCHARGE CAPACITY AT 1ST CYCLE AND THE CYCLE ABILITY DURING 25 CYCLES WERE STUDIED. THE DISCHARGE CAPACITY AND CYCLE ABILITY WERE COMPARABLE WITH CURRENT VALUES OF LIFEPO4 AND GRAPHITE BASED ELECTRODES.

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APA: Copy

Salimi, Pejman, JAVADIAN, SOHEILA, & Kakemam, Jamal. (2015). STUDY OF ELECTROCHEMICAL PERFORMANCE OF LIFEPO4 AND GRAPHITE ELECTRODES WITH EC/DMC ELECTROLYTE IN LI-ION BATTERIES. ANNUAL ELECTROCHEMISTRY SEMINAR OF IRAN. SID. https://sid.ir/paper/919835/en

Vancouver: Copy

Salimi Pejman, JAVADIAN SOHEILA, Kakemam Jamal. STUDY OF ELECTROCHEMICAL PERFORMANCE OF LIFEPO4 AND GRAPHITE ELECTRODES WITH EC/DMC ELECTROLYTE IN LI-ION BATTERIES. 2015. Available from: https://sid.ir/paper/919835/en

IEEE: Copy

Pejman Salimi, SOHEILA JAVADIAN, and Jamal Kakemam, “STUDY OF ELECTROCHEMICAL PERFORMANCE OF LIFEPO4 AND GRAPHITE ELECTRODES WITH EC/DMC ELECTROLYTE IN LI-ION BATTERIES,” presented at the ANNUAL ELECTROCHEMISTRY SEMINAR OF IRAN. 2015, [Online]. Available: https://sid.ir/paper/919835/en

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