Characteristics of electric double layer capacitors with an ionic liquid electrolyte containing Li ion

被引：21

作者：

Murayama, I

Yoshimoto, N

Egashira, M

Morita, M

Kobayashi, Y

Ishikawa, M

机构：

[1] Yamaguchi Univ, Fac Engn, Dept Chem Engn & Appl Chem, Ube, Yamaguchi 7558611, Japan

[2] Sanyo Chem Ind Ltd, Higashiyama Ku, Kyoto 6050995, Japan

[3] Kansai Univ, Fac Engn, Dept Appl Chem, Suita, Osaka 5648680, Japan

来源：

ELECTROCHEMISTRY | 2005年 / 73卷 / 08期

关键词：

electric double layer capacitor; ionic liquid; electrolyte; EMIBF4;

D O I：

10.5796/electrochemistry.73.600

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The performance of electric double layer capacitor, (EDLC) with an ionic liquid, 1-ethy-3-methylimidazolium tetrafluoroborate (EMIBF4) electrolyte containing LiBF4, has been investigated and compared with that of EDLC containing EMIBF4 without LiBF4 as well as containing a conventional organic electrolyte, triethylmethylammonium tetrafluoroborate/propylene carbonate (TEMABF(4)/PC). EDLC with EMIBF4 + LiBF4 showed an excellent electrochemical stability; the electrolyte was not decomposed even at a cell voltage of ca. 3.6 V. Calculated energy density in EDLC with EMIBF4 + LiBF4 was highest among EDLCs with the cited electrolytes. The addition of LiBF4 to EMIBF4 also improved double layer capacitance especially at a positive electrode.

引用

页码：600 / 602

页数：3

共 8 条

[1]

CARTON RT, 1994, J ELECTROCHEM SOC, V141, pL73

[2]

KOCH VR, 1995, J ELECTROCHEM SOC, V142, P116

[3]

MATSUMOTO H, 2003, EL SOC JAP 2003 FALL, P212

[4] Electrochemical properties of imidazolium salt electrolytes for electrochemical capacitor applications [J].