The birnessite type manganese dioxide electrode was prepared by the electrochemical stimulation as we recently described. It showed 190 F g(-1) in a Na2SO4 aqueous solution between -0.1 and 0.9 V versus Ag/AgCl at 1 A g(-1). The specific capacitance of birnessite was decreased by the manganese dissolution when the reduction and oxidation were repeated. By adding small amounts of Na2HPO4 or NaHCO3 into the electrolyte, the capacitance increased to 200-230 F g(-1) and the manganese dissolution was successfully suppressed. Thanks to the additives, the birnessite demonstrated the much improved cycleability over > 1800 cycles. (c) 2008 Elsevier B.V. All rights reserved.
机构:
Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Ogata, A.
;
Komaba, S.
论文数: 0引用数: 0
h-index: 0
机构:
Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Komaba, S.
;
Baddour-Hadjean, R.
论文数: 0引用数: 0
h-index: 0
机构:
Inst Chim & Mat Paris Est, CNRS, UMR 7182, F-94320 Thiais, FranceTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Baddour-Hadjean, R.
;
Pereira-Ramos, J. - P.
论文数: 0引用数: 0
h-index: 0
机构:
Inst Chim & Mat Paris Est, CNRS, UMR 7182, F-94320 Thiais, FranceTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Pereira-Ramos, J. - P.
;
Kumagai, N.
论文数: 0引用数: 0
h-index: 0
机构:
Iwate Univ, Grad Sch Engn, Dept Frontier Mat & Funct Engn, Morioka, Iwate 0208551, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
机构:
Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Ogata, A.
;
Komaba, S.
论文数: 0引用数: 0
h-index: 0
机构:
Tokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Komaba, S.
;
Baddour-Hadjean, R.
论文数: 0引用数: 0
h-index: 0
机构:
Inst Chim & Mat Paris Est, CNRS, UMR 7182, F-94320 Thiais, FranceTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Baddour-Hadjean, R.
;
Pereira-Ramos, J. - P.
论文数: 0引用数: 0
h-index: 0
机构:
Inst Chim & Mat Paris Est, CNRS, UMR 7182, F-94320 Thiais, FranceTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan
Pereira-Ramos, J. - P.
;
Kumagai, N.
论文数: 0引用数: 0
h-index: 0
机构:
Iwate Univ, Grad Sch Engn, Dept Frontier Mat & Funct Engn, Morioka, Iwate 0208551, JapanTokyo Univ Sci, Fac Sci, Dept Appl Chem, Shinjuku Ku, Tokyo 1628601, Japan