Formation electrolyte for tantalum solid electrolyte capacitors

A method of forming a solid electrolytic capacitor comprising:

• forming a first dielectric oxide on a tantalum anode by applying a first formation electrolyte on said anode;
• forming a second dielectric oxide on said first dielectric oxide by applying a second formation electrolyte on said anode;
• wherein at least one of said first formation electrolyte or said second formation electrolyte comprises a derivative of inositol as defined by Formula 1:
• wherein:
• each of R1-R6 is independently selected from H, substituted or unsubstituted carbon chain of up to 20 carbon atoms, —PO3R7R8;
• —SiR93, —C(O)R10;
• and
• or adjacent groups may be taken together to represent
• each R7 and R8 are independently selected from H, a cation;
• saturated or unsaturated carbon chain of up 35 carbon atoms;
• or —CH2CHR12CH2R13;
• each R9 is independently an alkyl of 1 to 10 carbon atoms;
• each R10 is independently an alkyl of 1 to 10 carbon atoms;
• each R11 represents a bond to an oxygen of the derivative of inositol of Formula 1;
• and
• R12 and R13 are esters terminated with H, saturated or unsaturated carbon chain of 1 to 35 carbon atoms and
• forming a conductive polymer cathode on said dielectric oxide.