Compound comprising aromatic ring, and polyelectrolyte membrane using same

Patent metadata

Field	Value
Publication number	US-2017362171-A1
Application number	US-201615542989-A
Country	US
Kind code	A1
Filing date	Jan 27, 2016
Priority date	Jan 27, 2015
Publication date	Dec 21, 2017
Grant date	—

Abstract

The present specification relates to a compound comprising an aromatic ring, a polyelectrolyte membrane comprising the same, a membrane-electrode assembly comprising the polyelectrolyte membrane, a fuel cell comprising the membrane-electrode assembly, and a redox flow battery comprising the polyelectrolyte membrane.

First claim

1 . A compound comprising an aromatic ring represented by the following Chemical Formula 1:

in Chemical Formula 1,
Q is represented by the following Chemical Formula 2 or 3,
CF 2   [Chemical Formula 2]

CF 2 (CF 2 ) n1 O(CF 2 ) n2 CF 2   [Chemical Formula 3]

m, n1, and n2 are each an integer from 0 to 16,
when m is an integer of 2 or more, a plurality of Qs is the same as or different from each other,
two to four of R1 to R5 are the same as or different from each other, and are each independently a hydroxy group or a halogen group, and the other(s) is/are hydrogen,
R6 is selected from the group consisting of —SO 3 H, —SO 3 − M + , —COOH, —COO − M + , —PO 3 H 2 , —PO 3 H − M + , —PO 3 2− 2M + , and a group represented by the following Chemical Formula 4,

in Chemical Formula 4,
at least one of R7 to R11 is selected from the group consisting of —SO 3 H, —SO 3 − M + , —COOH, —COO − M + , —PO 3 H 2 , —PO 3 H − M + , —PO 3 2− 2M + , and the others are hydrogen,
is a moiety bonded to Q of Chemical Formula 1, and
M is a Group 1 element.

2 . The compound of claim 1 , wherein two of R1 to R5 are the same as or different from each other, and are each independently a halogen group; or a hydroxy group, and the others are hydrogen.

3 . The compound of claim 1 , wherein three of R1 to R5 are the same as or different from each other, and are each independently a halogen group, and the others are hydrogen.

4 . The compound of claim 1 , wherein four of R1 to R5 are the same as or different from each other, and are each independently a halogen group, and the other is hydrogen.

5 . The compound of claim 1 , wherein at least one of R7 to R11 is —SO 3 H or —SO 3 − M + , the others are hydrogen, and the definition of M is the same as that in Chemical Formula 1.

6 . The compound of claim 1 , wherein the compound represented by Chemical Formula 1 is any one selected from the following structures:

7 . A polymer comprising a monomer derived from the compound of claim 1 .

8 . The polymer of claim 7 , wherein the polymer is represented by the following Chemical Formula 5:

in Chemical Formula 5,
p and q are each more than 0 and less than 1, and p+q=1.

9 . A polyelectrolyte membrane comprising the polymer of claim 7 .

10 . The polyelectrolyte membrane of claim 9 , wherein the polyelectrolyte membrane has an ion exchange capacity (IEC) value of 0.01 mmol/g to 7 mmol/g.

11 . The polyelectrolyte membrane of claim 9 , wherein the polymer has a weight average molecular weight of 500 or more and 5,000,000 or less (g/mol).

12 . The polyelectrolyte membrane of claim 9 , wherein the polyelectrolyte membrane has a thickness of 1 μm or more and 500 μm or less.

13 . The polyelectrolyte membrane of claim 9 , wherein the polyelectrolyte membrane has ion conductivity of 0.01 S/m or more and 0.5 S/m or less.

14 . A membrane-electrode assembly comprising:
an anode; a cathode; and the polyelectrolyte membrane of claim 9 disposed between the anode and the cathode.

15 . A polyelectrolyte-type fuel cell comprising:
the two or more membrane-electrode assemblies according to claim 14 ; a stack which comprises a bipolar plate disposed between the membrane-electrode assemblies; a fuel supplying part which supplies fuel to the stack; and an oxidizing agent supplying part which supplies an oxidizing agent to the stack.

16 . A redox flow battery comprising:
a positive electrode cell comprising a positive electrode and a positive electrode electrolytic solution; a negative electrode cell comprising a negative electrode and a negative electrode electrolytic solution; and the polyelectrolyte membrane of claim 9 disposed between the positive electrode cell and the negative electrode cell.

Assignees

• Lg Chemical Ltd

Inventors

• Jang Yong Jin
• Han Joong Jin
• Kim Youngjea
• Kang Esder
• Jung Sehee
• Ryu Hyun Woog
• Yu Yunah

Classifications

• H01M8/1018

  Polymeric electrolyte materials · CPC title

• H01M8/18

  Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells · CPC title

• C08J2371/10

  from phenols · CPC title

• C08G65/4056

  (I) or (II) containing sulfur (as the sulfone group C08G75/23) · CPC title

• C08G2650/50

  containing nitrogen, e.g. polyetheramines or Jeffamines(r) · CPC title