Preparation and properties of manganese oxide/carbon composites by reduction of potassium permanganate with acetylene black

被引:67
作者
Huang, Xingkang [1 ]
Yue, Hongjun [1 ]
Attia, Adel [1 ]
Yang, Yong [1 ]
机构
[1] Xiamen Univ, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China
关键词
D O I
10.1149/1.2388741
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Amorphous manganese oxide/carbon composites were synthesized by directly reducing potassium permanganate with acetylene black (AB) as a cheap reducing agent. A reaction is postulated and confirmed by checking the evolved CO2 gas and other species such as CO32- and HCO3- left in the mother liquor. All the composites were characterized by scanning electron micrograph, X-ray diffraction, and thermogravimetric/diffenential thermal analysis techniques. The electrochemical performances of the composites were also investigated and one composition delivered a discharge capacity as high as 231 mAh g(-1) (1.14 Li/Mn) at a current density of 40 mA g(-1) and its electrochemical performance at high rate was excellent. All results suggested that the reaction is suitable for preparing a composite cathode material and these composite materials could be developed as a potential cathode material for rechargeable Li batteries with high power. The intercrystalline water, affecting the behavior of our composites, was also discussed. (c) 2006 The Electrochemical Society.
引用
收藏
页码:A26 / A33
页数:8
相关论文
共 30 条
[1]   Rechargeable 3 V Li cells using hydrated lamellar manganese oxide [J].
Bach, S ;
PereiraRamos, JP ;
Baffier, N .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (11) :3429-3434
[2]   MnOx/C composites as electrode materials.: I.: Synthesis, XRD and cyclic voltammetric investigation [J].
Bezdicka, P ;
Grygar, T ;
Klápste, B ;
Vondrák, J .
ELECTROCHIMICA ACTA, 1999, 45 (06) :913-920
[3]   Investigation of promoter effects of manganese oxide on carbon nanofiber-supported cobalt catalysts for Fischer-Tropsch synthesis [J].
Bezemer, GL ;
Radstake, PB ;
Falke, U ;
Oosterbeek, H ;
Kuipers, HPCE ;
van Dillen, A ;
de Jong, KP .
JOURNAL OF CATALYSIS, 2006, 237 (01) :152-161
[4]   Oxygen reduction reaction on nanosized manganese oxide particles dispersed on carbon in alkaline solutions [J].
Calegaro, M. L. ;
Lima, F. H. B. ;
Ticianelli, E. A. .
JOURNAL OF POWER SOURCES, 2006, 158 (01) :735-739
[5]   Rapid discharge performance of composite electrode of hydrated sodium manganese oxide and acetylene black [J].
Hibino, M ;
Kawaoka, H ;
Zhou, HS ;
Honma, I .
ELECTROCHIMICA ACTA, 2004, 49 (28) :5209-5216
[6]   Two-step addition of acetylene black to hydrated sodium manganese oxide: its effect on the performance of rapid discharge cathode [J].
Hibino, M ;
Kawaoka, H ;
Zhou, HS ;
Honma, I .
JOURNAL OF POWER SOURCES, 2003, 124 (01) :143-147
[7]   Nanostructured lithium manganese oxide cathodes obtained by a reduction of aqueous lithium permanganate with hydrogen [J].
Im, D ;
Manthiram, A .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (06) :A742-A746
[8]   Nanostructured lithium manganese oxide cathodes obtained by reducing lithium permanganate with methanol [J].
Im, D ;
Manthiram, A .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (08) :A1001-A1007
[9]   Dissolution of spinel oxides and capacity losses in 4V Li/LixMn2O4 coils [J].
Jang, DH ;
Shin, YJ ;
Oh, SM .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (07) :2204-2211
[10]   Nanostructure and high-rate discharge-charge property of manganese oxide/acetylene black nanocomposite synthesized by sonochemical method [J].
Kawaoka, H ;
Hibino, M ;
Zhou, H ;
Honma, I .
SOLID STATE IONICS, 2005, 176 (5-6) :621-627