PREPARATION AND ELECTROCHEMICAL EVALUATION OF CMK-1/S AS CATHODE MATERIALS FOR LI/S BATTERY

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SOVIZI M.R.; MADRAM A.R.; MOSTAFAVI M.H.

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Seminar Paper

Paper Information

Seminar: IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR
Year:2014 | Issue:11

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Title

PREPARATION AND ELECTROCHEMICAL EVALUATION OF CMK-1/S AS CATHODE MATERIALS FOR LI/S BATTERY

Author(s)

SOVIZI M.R. | MADRAM A.R. | MOSTAFAVI M.H. | Issue Writer Certificate

Keywords

LITHIUM SULFUR BATTERY

CMK-1

SOL-GEL METHOD

SULFUR ELECTRODE

POLYSULFIDE DISSOLUTION

Abstract

RECHARGEABLE LI-S BATTERIES HAVE RECEIVED EVER-INCREASING ATTENTION RECENTLY DUE TO THEIR HIGH THEORETICAL SPECIFIC ENERGY DENSITY, WHICH IS 3 TO 5 TIMES HIGHER THAN THAT OF LI-ION BATTERIES BASED ON INTERCALATION REACTIONS. LI-S BATTERIES MAY REPRESENT A NEXT-GENERATION ENERGY STORAGE SYSTEM. HOWEVER, IT HAS BEEN REPORTED THAT LI-S BATTERIES WITH ORGANIC LIQUID ELECTROLYTE HAVE SOME PROBLEMS RELATED TO LOW ACTIVE MATERIALS UTILIZATION EFFICIENCY AND POOR CYCLE LIFE, BECAUSE OF THE INSULATING NATURE OF SULFUR AND THE SOLUBILITY OF POLYSULFIDES GENERATED DURING THE ELECTROCHEMICAL REACTION PROCESS [1]. IN THIS RESEARCH, TO SOLVE THESE PROBLEMS, MESOPOROUS CARBON (CMK-1) WAS SYNTHESIZED AND IT WAS USED TO ABSORB THE POLYSULFIDE WHICH FORMS DURING THE FIRST DISCHARGE STEP OF A LI/S BATTERY. CMK-1 IN THE ELECTRODE NOT ONLY ACTS AS AN ADSORBENT FOR THE POLYSULFIDE, BUT ALSO ACTS AS AN ELECTRICALLY CONDUCTING ADDITIVE [2]. CMK1- S NANOCOMPOSITE WITH WEIGHT RATIOS OF 70:30, 60:40 AND 50:50 WERE PREPARED BY HEATING THE MIXTURE OF SULFUR AND CMK-1 AT 155O FOR 4H UNDER N2 PROTECTION [3]. DIFFERENT TECHNIQUE SUCH AS DSC/TGA, ICP, XRD, TEM AND BET WERE EMPLOYED TO CHARACTERIZE THE CHEMICAL COMPOSITION, SURFACE AREA, PORE AND VOLUME SIZE AND MORPHOLOGY OF ELECTRODE MATERIALS. FINALLY THE ELECTROCHEMICAL PERFORMANCE OF CMK1-S NANOCOMPOSITE WAS INVESTIGATED BY CHARGE-DISCHARGE AND CYCLIC VOLTAMMETRY METHODS. THE RESULTING OF THESE TESTS REPRESENTING A PROMISING CATHODE MATERIAL FOR RECHARGEABLE LITHIUM BATTERIES WITH HIGH ENERGY DENSITY.

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APA: Copy

SOVIZI, M.R., MADRAM, A.R., & MOSTAFAVI, M.H.. (2014). PREPARATION AND ELECTROCHEMICAL EVALUATION OF CMK-1/S AS CATHODE MATERIALS FOR LI/S BATTERY. IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR. SID. https://sid.ir/paper/912147/en

Vancouver: Copy

SOVIZI M.R., MADRAM A.R., MOSTAFAVI M.H.. PREPARATION AND ELECTROCHEMICAL EVALUATION OF CMK-1/S AS CATHODE MATERIALS FOR LI/S BATTERY. 2014. Available from: https://sid.ir/paper/912147/en

IEEE: Copy

M.R. SOVIZI, A.R. MADRAM, and M.H. MOSTAFAVI, “PREPARATION AND ELECTROCHEMICAL EVALUATION OF CMK-1/S AS CATHODE MATERIALS FOR LI/S BATTERY,” presented at the IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR. 2014, [Online]. Available: https://sid.ir/paper/912147/en

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