Explosion-resistant large capacitive lithium ion secondary battery

An electrode structure comprising:

• a first part coated with a first active material and a second part connected to an electrode terminal and not coated with the first active material;
• an over-coat material coating said second part of said electrode and not coating said first part;
• and
• an electrode pad on said second part,
• wherein the electrode terminal extends from said electrode pad and wherein said over-coat material covers said electrode pad and a portion of said electrode terminal, and
• wherein said over-coat material has at least one of the following properties:
• suppression of heat transfer from said second part of said electrode to said separator;
• reduction of a heat transfer rate from said second part of said electrode to said separator;
• prevention of transfer of excess heat from said second part of said electrode to said separator;
• electrical isolation of said second part of said electrode from said separator;
• prevention of charges generated in said first active material from becoming concentrated in said second part of said electrode and discharged from said second part;
• and
• prevention of said separator from being melted by a current discharge from or into said second part of said electrode through said separator until said current discharge is shut down by a fuse function of said separator.