Ultrathin conformal ocvd pedot coatings on porous electrodes and applications thereof

Patent metadata

Field	Value
Publication number	US-2022013787-A1
Application number	US-202117370611-A
Country	US
Kind code	A1
Filing date	Jul 8, 2021
Priority date	Jul 10, 2020
Publication date	Jan 13, 2022
Grant date	—

Abstract

The present disclosure relates to electrodes comprising a polymer film and a substrate, wherein the polymer film has a thickness of about 5 nm to about 600 nm. The present disclosure also relates to electrochemical cells and batteries comprising the electrodes disclosed herein. The present disclosure also relates to methods of making the electrodes disclosed herein.

First claim

1 . An electrode, comprising a polymer film and a substrate, wherein the polymer film comprises poly(3,4-ethylene dioxythiophene) (PEDOT), polyaniline, polypyrrole, or polythiphene and has a thickness of about 5 nm to about 600 nm.

2 . (canceled)

3 . The electrode of claim 1 , wherein the polymer film comprises poly(3,4-ethylene dioxythiophene) (PEDOT).

4 . (canceled)

5 . The electrode of claim 1 , wherein the substrate is porous.

6 . (canceled)

7 . The electrode of claim 1 , wherein the substrate is carbonaceous.

8 - 11 . (canceled)

12 . The electrode of claim 1 , wherein the substrate is a silicon wafer, a trench wafer, a metal foam, or a metal mesh.

13 . (canceled)

14 . The electrode of claim 1 , wherein the structure of the substrate comprises a plurality of pores.

15 - 19 . (canceled)

20 . The electrode of claim 14 , wherein the average distance between each pore is from about 1 to about 1,000 nm.

21 . (canceled)

22 . The electrode of claim 1 , wherein the polymer film has a thickness of about 10 nm to about 300 nm.

23 - 29 . (canceled)

30 . The electrode of claim 1 , wherein the polymer film further comprises a dopant.

31 . (canceled)

32 . The electrode of claim 30 , wherein the dopant is an acid.

33 - 35 . (canceled)

36 . The electrode of claim 1 , wherein the structure of the polymer film comprises a plurality of pores.

37 . (canceled)

38 . The electrode of claim 1 , wherein the structure of the polymer film comprises a plurality of nodules.

39 - 43 . (canceled)

44 . The electrode of claim 1 , wherein the structure of the electrode comprises a plurality of fibrils or a plurality of fibers.

45 - 50 . (canceled)

51 . The electrode of claim 44 , wherein the structure of the electrode further comprises crystallites.

52 - 57 . (canceled)

58 . The electrode of claim 1 , wherein the structure of the electrode does not comprise liquid-bridging or delamination.

59 . The electrode of claim 1 , wherein the structure of the electrode is ordered or uniform.

60 . (canceled)

61 . The electrode of claim 1 , wherein the advancing water contact angle of the electrode is about 50° to about 70°.

62 - 64 . (canceled)

65 . The electrode of claim 1 , wherein the receding water contact angle of the electrode is about 10° to about 30°.

66 - 69 . (canceled)

70 . An electrochemical cell, comprising an electrode of claim 1 ; and an electrolyte.

71 - 85 . (canceled)

86 . A battery comprising an electrode of claim 1 .

87 . (canceled)

88 . A method of making the electrode of claim 1 , comprising:
providing a substrate; contacting the substrate with ethylenedioxythiophene and an oxidant at first temperature; and reducing the first temperature to a second temperature, thereby forming the electrode.

89 - 102 . (canceled)

Assignees

• Massachusetts Inst Technology

Inventors

• Gleason Karen K
• Brushett Fikile
• Wan Charles
• Forner-Cuenca Antoni
• Heydari Gharahcheshmeh Meysam
• Ashraf Gandomi Yasser

Classifications

• Y02E60/50

  Fuel cells · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M4/13

  Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof · CPC title

• H01M10/4235

  Safety or regulating additives or arrangements in electrodes, separators or electrolyte (H01M10/4242 takes precedence) · CPC title

• H01M4/139

  Processes of manufacture · CPC title