# US 2021/0242509 A1 · Stripline detector for in situ battery and fuel cell nmr

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- Number: US 2021/0242509 A1
- Document ID: US20210242509A1
- Status: Published application
- Kind: A1
- Application number: 17/145,482
- Filed: 2021-01-11
- Published: 2021-08-05
- Earliest claimed: 2016-08-22
- Assignees: Georgetown University
- Applicants: Georgetown University
- Inventors: YuYe J. TONG; Eric G. SORTE
- Web page: https://patentgrep.com/patent/US20210242509A1

## CPC

- H01M 10/48: Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569)
- G01N 24/088: {Assessment or manipulation of a chemical or biochemical reaction, e.g. verification whether a chemical reaction occurred or whether a ligand binds to a receptor in drug screening or assessing reaction kinetics}
- G01R 33/3456: {Stripline resonators}
- G01R 33/3628: {Tuning/matching of the transmit/receive coil}
- G01R 33/46: NMR spectroscopy
- H01M 4/5825: {Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines}
- H01M 4/587: for inserting or intercalating light metals
- H01M 4/661: {Metal or alloys, e.g. alloy coatings (H01M4/669 take precedence)}
- H01M 8/04305: {Modeling, demonstration models of fuel cells, e.g. for training purposes}
- H01M 10/0525: Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
- H01M 50/417: Polyolefins
- H01M 50/426: Fluorocarbon polymers
- Y02E 60/10: Energy storage using batteries
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- G01N: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (measuring or testing apparatus or processes other than immunoassay, involving enzymes or microorganisms C12M, C12Q)
- G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

Provided are batteries and fuel cells incorporating a stripline detector for use in nuclear magnetic resonance (NMR). The stripline batteries and fuel cells can be used for in situ NMR measurement of battery or fuel cell chemistry. Also provided are methods for measuring in situ battery and fuel cell NMR using the stripline batteries and fuel cells of the invention.

## Claims

### Claim at position 1

1-12. (canceled)

### Claim 13

A fuel cell comprising a stripline detector.

### Claim 14 (depends on 13)

The fuel cell of claim 13, further comprising metallic cathode and anode support plates arranged in substantially parallel planes and situated on opposite sides of the stripline detector.

### Claim 15 (depends on 14)

The fuel cell of claim 14, wherein the metallic cathode support plate comprises aluminum.

### Claim 16 (depends on 14)

The fuel cell of claim 14, wherein the metallic cathode support plate further comprises a cathode material deposited on the cathode support plate.

### Claim 17 (depends on 16)

The fuel cell of claim 16, wherein the cathode material deposited on the cathode support plate is selected from the group consisting of lithium iron phosphate (LiFePO4), lithium cobalt oxide (LiCoO2), and spinel cathode materials.

### Claim 18 (depends on 14)

The fuel cell of claim 14, wherein the metallic anode support plate comprises copper.

### Claim 19 (depends on 18)

The fuel cell of claim 18, wherein the metallic anode support plate further comprises an anode material deposited on the cathode support plate.

### Claim 20 (depends on 19)

The fuel cell of claim 19, wherein the anode material deposited on the anode support plate is graphite.

### Claim 21 (depends on 14)

The fuel cell of claim 14, further comprising a first nonconductive separator situated between the stripline detector and the metallic cathode support plate, and a second nonconductive separator situated between the stripline detector and the metallic anode support plate, wherein the first nonconductive separator electrically isolates the stripline detector from the cathode, and the second nonconductive separator electrically isolates the stripline detector from the anode.

### Claim 22 (depends on 21)

The fuel cell of claim 21, wherein the first nonconductive separator and the second nonconductive separator independently comprise a material selected from the group consisting of polyethylene, polypropylene, and polytetrafluoroethylene (PTFE).

### Claim 23 (depends on 21)

The fuel cell of claim 21, wherein the first nonconductive separator and the second nonconductive separator are the same.

### Claim 24 (depends on 21)

The fuel cell of claim 21, wherein the first nonconductive separator and the second nonconductive separator are a single nonconductive separator.

### Claim 25

(canceled)

### Claim 26 (depends on 13)

A method for measuring in situ fuel cell nuclear magnetic resonance (NMR), comprising
providing the fuel cell of claim 13;
connecting the stripline detector to an NMR circuit;
isolating electrode leads of the battery from alternating current NMR circuitry; and
cycling the fuel cell while acquiring NMR data from the fuel cell.