리튬전지용 Dimercaptan-Polyphenylenediamine 정극의 제막특성

박수길; 이주성

Journal of the Korean Industrial and Engineering Chemistry, Vol.8, No.1, 114-121, February, 1997

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리튬전지용 Dimercaptan-Polyphenylenediamine 정극의 제막특성

The Preparation Characteristic of Dimercaptan-Polyphenylenediamine Cathodes for Lithium Battery

박수길, 이주성

초록

합성한 Polyphenylenediamine(PPD)와 2,5-dimercapto-1,3,4-thiadiazole(DMcT)을 다양한 비율로 혼합한 뒤 고분자 필름전지용 정극활물질을 제막하였다. 제막한 복합전극에 대해 SEM을 이용하여 도핑 전과 후의 표면구조의 변화를 관찰하였으며, 열적 안정성은 TGA를 이용하여 조사하였다 또한 전기화학적 특성은 cyclic voltammetry를, 전기전도도는 dry box내에서 four-probe method를 이용하여 측정하였다. 제막한 필름의 열적 안정성은 200℃ 이상이었으며, 전기전도도는 DMSO에서 제막한 후, 0.4% LiClO₄로 도핑한 필름의 전기전도도가 가장 우수하였으펴, 이 때의 값은 약 3S/cm이었다. 또한, 전기화학적 특성을 조사하여, DMcT가 PPD의 전기화학적 활성에 영향을 미침을 확인할 수 있었다.

The positive active material for polymer film-battery was prepared by using polyphenlenediamine(PPD) synthesized in our lab. and 2,5-dimercapto-1,3,4-thiadiazole(DMcT) with various mixture ratio. The transference measurement of surface morphology and thermal stability of the prepared composite film was carried out by using SEM and TGA, respectively. Electrochemical property and electrical conductivity of the composite film were also measured by using cyclic voltammetry and four-probe method in dry box, respectively. The thermal stability of prepared composite film was up to 200℃. The electrical conductivity of the composite film increased and showed the highest value(about 3 S/cm) when doped at 0.4% LiClO₄ solution. And we could confirm that DMcT was effective on reactivation of PPD through cyclic voltammogram.

[References]

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Kanamura K, Tomura H, Shiraishi S, Takehara ZI, J. Electrochem. Soc., 142(2), 340 (1995)
Katagiri N, Fujii T, Progress in Battreies & Battery Materials, 14 (1995)
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Chiang JC, MacDiarmid AG, Synth. Met., 13, 193 (1986)
MacDiarmid AG, Chiang JC, Richter AF, Somasiri NLD, Epstein AJ, Alcacer L, Conduct. Polym. (1987)
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Wolf JF, Forbes CE, Gould S, Shacklette LW, J. Electrochem. Soc., 136, 10 (1989)
Avlyanov JK, Min Y, MacDiarmid AG, Esptein AJ, Synth. Met., 72, 97 (1995)
Ye SY, Belanger D, J. Electrochem. Soc., 141(4), L49 (1994)
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Liu M, Visco SJ, DeJonghe LC, J. Electrochem. Soc., 138, 1891 (1991)
Gautier BD, Lasia M, Electrochim. Acta, 89, 709 (1994)
Chiodelli G, Scagliotti M, Solid State Ion., 73, 963 (1992)

[1] MacDiarmid AG, Epstein AJ, Synth. Met., 65, 103 (1994)

[2] Genies EM, Picart S, Synth. Met., 69, 165 (1995)

[3] Kanamura K, Tomura H, Shiraishi S, Takehara ZI, J. Electrochem. Soc., 142(2), 340 (1995)

[4] Katagiri N, Fujii T, Progress in Battreies & Battery Materials, 14 (1995)

[5] Kabata T, Fujii T, Kimura O, Samura T, Matsuda Y, Watanable M, Polym. Adv. Technol., 4, 205 (1993)

[6] Tatsuma T, Sotomura T, Sato T, Buttry DA, Oyama N, J. Electrochem. Soc., 142(10), L182 (1995)

[7] MacDiarmid AG, Epstein AJ, Faraday Discuss. Chem. Soc., 88, 317 (1989)

[8] Chiang JC, MacDiarmid AG, Synth. Met., 13, 193 (1986)

[9] MacDiarmid AG, Chiang JC, Richter AF, Somasiri NLD, Epstein AJ, Alcacer L, Conduct. Polym. (1987)

[10] Willstater R, Dorogi S, Chem. Ber., 42, 2143 (1990)

[11] Mohillner DM, Adams RN, Argensinger WJ, J. Am. Chem. Soc., 184, 3618 (1962)

[12] Wudl F, Angus RO, Lu FL, Allemand PM, Vachon DJ, Nowak M, Lui Z, Heeger A, J. Am. Chem. Soc., 109, 3677 (1986)

[13] Wolf JF, Forbes CE, Gould S, Shacklette LW, J. Electrochem. Soc., 136, 10 (1989)

[14] Avlyanov JK, Min Y, MacDiarmid AG, Esptein AJ, Synth. Met., 72, 97 (1995)

[15] Ye SY, Belanger D, J. Electrochem. Soc., 141(4), L49 (1994)

[16] Genies EM, Picart S, Synth. Met., 69, 165 (1995)

[17] Liu M, Visco SJ, DeJonghe LC, J. Electrochem. Soc., 138, 1891 (1991)

[18] Gautier BD, Lasia M, Electrochim. Acta, 89, 709 (1994)

[19] Chiodelli G, Scagliotti M, Solid State Ion., 73, 963 (1992)