文献还真没找到,但是找到个这个:
Cut a piece of silver wire and clean it with distilled water.
Dip the wire in concentrated HCl and allow it to dry on a lint-free cleaning cloth. This forms an insoluble layer of AgCl on the surface of the electrode and gives you an Ag/AgCl wire.
Repeat dipping every few months or if the reference electrode starts to drift.