Carbonaceous Material for Negative Electrode of Lithium Ion Battery

Abstract

Development of lithium ion battery is reviewed. Lithium ion battery has been used widely for note book personal computers, cellular phones and other applications. Annual sales amounts have reached to about 200 billion yens in 19 This new battery system was found in 1984 by Asahi Chemical Co. Extensive work has been carried out to improve carbonaceous material for negative electrode. By this improvement, discharge capacity of lithium ion battery (Cylindrical Type 18650) has been increased from 920mAh to 1600mAh in these 5 years. Future trend of technology is also reviewed. KEYWORDS: Lithium ion battery, Carbonaceous material, Negative Electrode, Lithium ion containing metal oxide, Polyacetylene. 1.•@ •• OE¾ ƒŠƒ`ƒŠƒ`ƒEƒ€ƒCƒI ƒ""ñŽŸ "d'r ‚Í •¢ ‚É•o ‚Ä'• ‚â6"N‚ª OEo‚Á‚½•B Fig.1‚ÉŽ¦ ‚· ‚ae‚¤‚É1997"N "x ‚É‚Í"" ‚è•ã ‚°‹K-Í ‚Í2,000‰-‰~ ‚É 'B ‚µ,-{ "N"x1998"N‚Í2,600‰-‰~ ‚ð"Ë"j ‚· ‚éOE© •ž ‚Ý‚Å‚ ‚è,ƒj ƒbƒJ ƒh "d'r,ƒj ƒbƒPƒ‹•… 'f "d'r ‚É'ã ‚í ‚è• ¶Žš'Ê ‚蕬OE^-¯ • ¶-p "ñŽŸ "d'r ‚Ì ' †•S "I' ¶•Ý‚AE ‚È‚Á‚Ä‚«‚Ä‚¢ ‚é•B‚±‚Ì ƒŠƒ`ƒŠƒ`ƒEƒ€ƒCƒI ƒ""ñŽŸ "d'r ‚Ì ŠJ"-OEôÜ‚AE •¡ OEã ‚Ì "®OEü ‚ɂ‚¢‚Ä•‰ ‹É‚Ì 'Y'f •Þ-¿ ‚ð' †•S‚É•q‚× ‚Ä‚Ý‚½‚¢1)•B 2.•@ƒŠƒ`@ƒŠƒ`ƒEƒ€ƒCƒI ƒ""ñ ŽŸ "d'r ‚Ì 'è ‹` ƒŠƒ`ƒŠƒ`ƒEƒ€ƒCƒI ƒ""ñŽŸ "d'r ‚Ì 'è‹`è‹`‚AE‚µ‚Ä‚Í •uƒŠ ƒ` ƒEƒ€ƒCƒI ƒ" ‚ð‹z ' •E 'E-£‚µ"¾‚é'Y'f Ž¿ •Þ-¿ ‚𕉠‹ÉŠˆ•¨‹ÉŠˆ•¨Ž¿‚AE ‚µ‚Ä-p ‚¢,ƒŠ Fig. 1 Sales Amounts of Secondary Battery. ƒ` ƒEƒ€ ƒCƒI ƒ" ‚ð ‹z ' •E'E-£‚µ "¾ ‚é ƒŠƒ`ƒŠƒ`ƒEƒ€ ƒC ƒI ƒ"ŠÜ-L ‹à '® Ž_ ‰»•¨ ‚ð •³ ‹É Šˆ•¨Ž¿Šˆ•¨Šˆ•¨Ž¿ ‚AE ‚µ ‚Ä-p‚¢ ‚½ ƒgƒ| ƒP ƒ~ ƒJ ƒ‹ "½‰žOE´-½‰žOE´-•‚ÉŠî ‚Ã ‚-"ñ •…OEn"ñ ŽŸ"d 'r •B •v ‚AE‚¢ ‚¤ ‚Ì ‚ªˆê‚ªˆê "Ê "I ‚Å ‚ ‚é •B ‚µ ‚½‚ª ‚Á ‚Ä, ƒŠƒ`ƒŠƒ`ƒEƒ€ ƒCƒI ƒ" "ñ ŽŸ"d 'r ‚Ì ŠJ "-OEoˆÜ ‚ð •l ‚¦ ‚é ‚É ‚Í,‚± ‚Ì 'Y 'f Ž¿ •Þ-¿‚AE ƒŠƒ`ƒŠƒ`ƒEƒ€ ƒC ƒI ƒ"ŠÜ-L‹à '®Ž_ ‰» •¨ ‚AE‚¢ ‚¤ "ñ ‚ ‚Ì •Þ-¿‚ª •³ •‰‹É ‚Ì 'g ‚Ý • ‡ ‚í ‚¹ ‚AE ‚µ ‚Ä ‚¢ ‚© ‚È ‚é OEoˆÜ ‚Å OE© •o ‚³ ‚ê ‚½‚Ì ‚© ‚ð •U ‚è•Ô ‚é ‚± ‚AE‚ª •K-v‚Å ‚ ‚é •B 3.•@ ƒŠ ƒ` ƒE ƒ€ ƒC ƒI ƒ" "ñ ŽŸ"d 'r ‚Ì ŠJ "-OEôÜ ‚Ü ‚¸•‚¸•‰‹É ‚Ì 'Y 'f Ž¿ •Þ-¿‚É ‚ ‚¢ ‚Ä •U ‚è •Ô ‚Á ‚Ä ‚Ý ‚½ ‚¢ •B1980 "N ‚Ì •‰‚ß ƒA ƒZƒ`ƒZƒ`ƒOEƒ" ‚Ì •d • ‡ 'Ì ‚Å ‚ ‚è,‹¤-ð "ñ •d OE‹ • ‡ ‚ð Žå •½ ‚AE ‚· ‚é ƒ| ƒŠ ƒA ƒZƒ`ƒZƒ`ƒOEƒ"‚ª •¢ ‚Ì ' † ‚ð 'å '› ‚¬ ‚³ ‚¹ ‚½ •B ƒ| ƒŠ ƒ} •[ ‚Å ‚ ‚è ‚È ‚ª ‚ç "d ‹C ‚ð 'Ê ‚µ,‚Ü ‚½‚» ‚Ì ŠOŠÏ ‚à ‹à '® ‚» ‚Ì ‚à ‚Ì ‚ð Žv ‚í ‚¹ ‚é •¨ Ž¿ ‚Å ‚ ‚Á ‚½•B •u ‹à '® ‚É 'ã ‚í ‚é "± "d •Þ-¿,'´ "d "± 'Ì,'¾-z "d 'r •v "™ ‚AEˆê 'å OE¤‹ † ƒu •[ ƒ€ ‚ª ‹N ‚± ‚Á ‚½•B •X ‚É-Ö‚ð ‚© ‚¯ ‚é ‚ae ‚¤ ‚É ‚± ‚Ì ƒ| ƒŠ ƒA ƒZƒ`ƒZƒ`ƒOEƒ" ‚ª "ñ ŽŸ"d 'r ‚Ì "d ‹É,‚µ ‚© ‚à •³ ‹É ‚É ‚à •‰‹É ‚É ‚à ‚È ‚é ‚AE‚¢ ‚¤ Ž-ŽÀ‚ª OE© •o ‚³ ‚ê •u-² ‚Ì ƒv ƒ‰ƒXƒ`ƒ‰ƒXƒ`ƒb ƒN"ñ ŽŸ"d 'r •v ‚ª ‚Å ‚« ‚é ‚AE•X ‚É'› ‚¬ ‚ª 'å ‚« ‚-‚È ‚Á ‚½2)•B ‚» ‚Ì "d ‹C ‰» Šw"I "½‰ž‹@•\ ‚ÍˆÈ‚ÍˆÈ ‰º‚Ì 'Ê ‚è ‚Å ‚ ‚é •B •³ ‹É ‚AE ‚µ ‚Ä "-‚-•ê • ‡: PA+X