Methods and devices for high-capacity flexible, printable, and conformal periodate and iodate batteries
AssigneeNew Jersey Institute of Technology
InventorsSomenath Mitra, Zhiqian Wang
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Abstract
Development of a flexible battery based on periodate/iodate-zinc system is disclosed. H3PO4—KCl dual quasi-solid electrolytes separated by an anion-exchange-membrane maintain the desired pH in electrodes and block unwanted ion movements. Poly(acrylic acid) fortifies the electrodes, enhances electrode flexibility, and avoids the free-flow of liquids. The NaMnIO6 shows a specific capacity of 650 mAg−1, approximately 81% of its theoretical capacity even when cells are bent. The overall technology is scalable by printing methods.
Claims19
A flexible battery comprising:
- a plurality of current collectors including a positive current collector and a negative current collector;
- an insoluble solid iodate or a periodate cathode, and an anode, wherein the cathode is in communication with the positive current collector and the anode is in communication with the negative current collector;
- at least one electrolyte forming a cathode electrolyte and an anode electrolyte, wherein the cathode is in communication with the cathode electrolyte and the anode is in communication with the anode electrolyte;
- a separator for separating the cathode and the anode;
- and
- at least one of the cathode electrolyte or the anode electrolyte is embedded in a polymer for enhancement of electrode flexibility and avoidance of free-flow of liquid electrolyte;
- and
- wherein the cathode is a multi-salt periodate containing more than one metal or hydrogen, or an iodate.
A flexible battery, comprising:
- a periodate cathode containing polyvinylpyrrolidone (PVP) binder or an iodate cathode containing polyvinylpyrrolidone (PVP) binder;
- wherein a poly(acrylic acid) PAA is part of an electrolyte for the cathode;
- a zinc-based anode;
- a dual quasi-solid phosphoric acid-potassium chloride (H3PO4—KCl) electrolytes for a cathode electrolyte-anode electrolyte combination;
- an anion-exchange membrane separating the cathode electrolyte and the anode electrolyte;
- and
- wherein the anion-exchange-membrane maintains a desired pH of lower than 2 for the cathode and higher than 5.5 for the anode, blocks movement of H+ ions to anode that cause anode corrosion, and poly(acrylic acid) fortifies the cathode to enhance flexibility and avoid free-flow of electrolyte liquid.
A method of making a flexible battery, comprising:
- forming a flexible battery that includes:
- a plurality of current collectors including a positive current collector and a negative current collector;
- an insoluble solid iodate or a periodate cathode, and an anode, wherein the cathode is in communication with the positive current collector and the anode is in communication with the negative current collector;
- at least one electrolyte forming a cathode electrolyte and an anode electrolyte, wherein the cathode is in communication with the cathode electrolyte and the anode is in communication with the anode electrolyte;
- a separator for separating the cathode and the anode;
- and
- at least one of the cathode electrolyte or the anode electrolyte is embedded in a polymer for enhancement of electrode flexibility and avoidance of free-flow of liquid electrolyte;
- and
- wherein the cathode is a multi-salt periodate cathode containing more than one metal or hydrogen.
Dependencies are inferred from the claim text.