Electric double layer capacitor
An electric double layer capacitor and electrode technology, applied in electrolytic capacitors, capacitors, hybrid capacitors, etc., can solve the problems of insufficient carbide electrostatic capacity and insufficient electrostatic capacity.
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Embodiment 1
[0296] (Synthesis example of compound (1))
[0297] Manufacture of tetramethylcalix[4]resorcinolarene (compound (1): MCRA)
[0298] In a four-neck flask, 30.0 g of resorcinol, 120 ml of ethanol, and 12.1 g of acetaldehyde were added under a nitrogen stream and cooled with ice, and 53.7 g of 36% hydrochloric acid was added dropwise while stirring. After completion of the dropwise addition, the temperature was raised to 65° C., and then kept at the same temperature for 5 hours. Add 320 grams of water to the resulting reaction mixture, filter the resulting precipitate, wash with water until the filtrate is neutral, and dry, then recrystallize from a water-ethanol mixed solvent to obtain 13.1 grams of tetramethylcalix [4] isophthalic acid Phenolic aromatics.
[0299] The mass spectrometry value (FD-MS) of MCRA m / z 544
[0300] MCRA's 1 HNMR (DMSO-d 6 ): δ 1.29(s, 12H), 4.45(q, 4H), 6.14(s, 4H), 6.77(s, 4H), 8.53(s, 8H)
manufacture example
[0302] MCRA was calcined (carbonized) at 1000° C. for 4 hours under an argon atmosphere, and then calcined (activated) at 1000° C. for 2 hours in the presence of carbon dioxide. Then, pulverization was performed with a ball mill (ball manufactured by Menozu, 28 rpm, 5 minutes). Since this activated carbon is not in contact with metal, it contains almost no metal components including metal ions.
[0303] After calculation, the total pore volume of the obtained activated carbon is 0.68ml / g, the micropore volume is 0.43ml / g, and the mesopore volume is 0.25ml / g.
[0304] Here, the total pore volume was calculated from the nitrogen adsorption amount at a relative pressure around 0.95 in the nitrogen adsorption isotherm at the liquid nitrogen temperature using AUTOSORB manufactured by Uasa Ionix Co., Ltd., and the micropore volume was calculated from a relative pressure around 0.30.
[0305] (Production example of electrodes and electric double layer capacitors)
[0306] 80 parts ...
Embodiment 2 to 9
[0310] Except that the kind of compound (1), the calcination time of activation and the electric quantity measured by galvanostatic charging and discharging are as described in Table 1, the implementation was carried out according to Example 1. The results are listed in Table 1 together with Example 1.
[0311] Table 1
[0312]
[0313]
[0314] * 1: In the production of compound (1), a mixed solvent of 60 ml of methanol and 60 ml of water was used instead of 120 ml of ethanol in Example 1, and recrystallization was not performed. Compound (1) uses a mixture of stereoisomers.
[0315] * 2: The volume average particle diameter measured using a laser diffraction particle size distribution analyzer SALD2000J (registered trademark, manufactured by Shimadzu Corporation) is about 5 μm. The cumulative particle size distribution of the activated carbon is shown in Table 2. In addition, the alkali metal content measured using a flame atomic absorption photometer AA-220FS (re...
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