Unique electrodes for electrochemical cells
AssigneeGlobal Energy Science, LLC
InventorHalbert P. Fischel
Life of this patent
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Abstract
An electrode for electrochemical cells including an electrically conductive cohesive membrane having a thickness defined by a first surface and a second surface opposite the first surface; ohmic impedance independent of membrane thickness; simultaneous uniform charge/discharge throughout membrane thickness; the membrane comprising open cell pores and surfaces; a current collector electrically strongly coupled to the entire membrane thickness; and pins extending through the membrane from the first surface to the second surface; the pins electrically coupled to the current collector having eliminated prior art problematical interfacial layers.
Claims21
An electrode for electrochemical cells comprising:
- an electrically conductive cohesive membrane having a thickness defined by a first surface and a second surface opposite said first surface;
- said membrane comprising open cell pores and pore surfaces;
- a current collector electrically coupled to said pore surfaces;
- and
- pins extending through said membrane from said first surface to said second surface;
- said pins electrically coupled to said current collector, wherein said pins have an outer surface defining a pin volume, wherein membrane material of said electrically conductive cohesive membrane extends through said pin volume, and wherein pore surfaces of said membrane material within said pin volume are plated with pin material.
An electrochemical unit cell comprising:
- a positive electrode and a negative electrode separated by a separator;
- each of said positive electrode and said negative electrode including a galvanic membrane comprising an electrically conducting contiguous open cell porous membrane structure saturated by electrolyte and faradaic or catalyst materials;
- said galvanic membrane having a thickness defined by a first surface and a second surface opposite said first surface;
- a current collector proximate to said first surface;
- and
- pins extending through said membrane from said first surface to said second surface;
- said pins electrically coupled to said current collector, wherein surfaces of said pins define a pin volume, wherein membrane material of said galvanic membrane extends through said pin volume, and wherein pore surfaces of said membrane material within said pin volume are plated with pin material of said pins.
A process for forming an electrode for an electrochemical unit cell comprising:
- providing an electrically conductive cohesive galvanic membrane having a thickness defined by a first surface and a second surface opposite said first surface;
- said galvanic membrane comprising open cell pores and pore surfaces;
- electrically coupling a current collector to said pore surfaces;
- and
- forming pins extending through said galvanic membrane from said first surface to said second surface, wherein said pins have an outer surface defining a pin volume, and wherein membrane material of said cohesive galvanic membrane extends through said pin volume, and pin material of said pins plates pore surface of said membrane material within said pin volume;
- and
- electrically coupling said pins to said current collector.
Dependencies are inferred from the claim text.