TECHNOLOGY FOCUS - ELECTRONICS - Preferred Method: Forming the carbon layer includes coating the anode body with a turbid liquid prepared by mixing and dispersing the carbon particles with one of the first additive and the second additive, and optionally an aromatic compound, benzene-1,2-diol (substituted at 3-6th positions by R1-R4 respectively), and drying the anode body coated with the turbid liquid.R1-R4=H, OH, carboxyl or alkyl.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The first additive is magnesium aluminum silicate.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The carbon layer further comprises an aromatic compound , benzene-1,2-diol (substituted at 3-6th positions by R1-R4 respectively)(preferably catechol and pyrogallol). The ratio of the first additive is at least 0.06-0.9, and the ratio of the aromatic compound is at least 0.1-1.8, both referred to the carbon particles as 1 in weight. The melting point of the aromatic compound, and the second additive is 130-215 degrees C. The ratio of the second additive is 0.06-1.25 referred to the carbon particles as 1 in weight. The second additive is at least one of polystyrene sulfonic acid having a molecular weight of at least 10000-1000000, or polystyrene sulfonate having a molecular weight of at least 10000-1000000; or is a condensation product of an aromatic sulfonic acid with formaldehyde and the condensation product of an aromatic sulfonate with formaldehyde; or is sodium polystyrene sulfonate. The condensation product of an aromatic sulfonic acid with formaldehyde is at least one compound selected from a condensation product of aryl phenol sulfonic acid with formaldehyde, a condensation product of phenol sulfonic acid with formaldehyde, a condensation product of anthraquinone sulfonic acid with formaldehyde, or a condensation product of naphthalene sulfonic acid with formaldehyde; and the condensation product of an aromatic sulfonate with formaldehyde is at least one compound selected from a condensation product of aryl phenol sulfonate with formaldehyde, a condensation product of phenol sulfonate with formaldehyde, a condensation product of anthraquinone sulfonate with formaldehyde, or a condensation product of naphthalene sulfonate with formaldehyde. EXAMPLE - A solid electrolyte capacitor (test) containing a carbon layer having carbon particles (5 wt.%), magnesium aluminum silicate (0.3 wt.%), and pyrogallol (9 wt.%) were prepared. A control solid electrolyte capacitor containing a carbon layer having carbon particles (5 wt.%) were prepared. The solid electrolyte capacitor (test and control) were evaluated with respect to electrostatic capacity (C) and ESR (equivalent series resistance). In that case, before and after leaving at 105 degrees C for 1000 hours, electrostatic capacity (C) and ESR were measured in order to calculate the rate of change in capacity ( delta C) and the rate of change in ESR ( delta ESR) before and after leaving. The test/control showed initial C( mu F): ESR(mO) of 25/21:23/32. After leaving, the test/control showed a delta C (%): delta ECR(%) of -1.3/-5.1:3.6/21.