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US 10,593,945 B2Granted
Printed planar lithium-ion batteries
OwnerBing R. Hsiehinventor
Life of this patent
Estimating the term…
Abstract
A planar microbattery cell array is disclosed. The array includes a number of battery cells arranged parallel to one another on a substrate. The cells include positive electrodes with positive current collectors, negative electrodes with negative current collectors, and solid or gel polymer electrolyte. The current collectors may be arranged in an interdigitated configuration. The novel 3D battery design is suitable for large format batteries and can be manufactured easily and cost-effectively using printing methods.
Claims21
A planar microbattery cell array comprising:
- a plurality of devices arranged parallel to one another on a substrate, wherein each device comprises;
- a positive electrode, having an upper surface, a lower surface in contact with the substrate, a first sidewall, and a second sidewall, wherein the first sidewall and the second sidewall are opposite to one another;
- a positive current collector layer in contact with at least a portion of the first sidewall of the positive electrode and optionally some or all of the top surface of the positive electrode;
- a negative electrode parallel to the positive electrode, the negative electrode having an upper surface, a lower surface in contact with the substrate, and a first sidewall, and a second sidewall, wherein the first sidewall and the second sidewall are opposite to one another;
- and
- a negative current collector layer in contact with at least a portion of the second sidewall of the negative electrode and optionally some or all of the top surface of the negative electrode, the second sidewall of the negative electrode facing away from the positive electrode;
- and
- an electrolyte in contact with both the positive electrodes and the negative electrodes;
- wherein, within the plurality of devices, the positive electrode current collector layer has a first comb structure, and the negative electrode current collector layer has a second comb structure, and the first comb structure and the second comb structure are arranged in an interdigitated configuration.
6 more elements
A planar battery cell comprising:
- a positive electrode, having an upper surface, a lower surface in contact with the substrate, a first sidewall, and a second sidewall, wherein the first sidewall and the second sidewall are opposite to one another;
- a positive electrode current collector layer in contact with at least a portion of the first sidewall and optionally some or all of the top surface of the positive electrode;
- a negative electrode parallel to the positive electrode, the negative electrode having an upper surface, a lower surface in contact with the substrate, and a first sidewall, and a second sidewall, wherein the first sidewall and the second sidewall are opposite to one another;
- and
- a negative electrode current collector layer in contact with at least a portion of the second sidewall of the negative electrode and optionally some or all of the top surface of the negative electrode, the second sidewall of the negative electrode facing away from the positive electrode;
- and
- an electrolyte in contact with both the positive electrode and the negative electrode.
4 more elements
A method of making a planar microbattery cell array, comprising the steps of:
- a) providing a substrate that has a working surface;
- b) depositing an array of positive electrode lines onto the working surface of the substrate, wherein the positive electrode lines are parallel to one another;
- c) depositing an array of negative electrode lines onto the working surface of the substrate, wherein the negative electrode lines are parallel to the positive electrode lines;
- d) depositing a first metal ink onto a portion of each positive electrode line to form a positive electrode current collector in contact with the array of positive electrode lines;
- e) depositing a second metal ink onto a portion of each negative electrode line to form a negative electrode current collector in contact with the array of negative electrode lines;
- and
- f) applying an electrolyte over the substrate wherein the electrolyte is in contact with the positive electrode lines and the negative electrode lines.
4 more elements
Dependencies are inferred from the claim text.