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One-dimensional coordination polymer of nickel and its preparation method and application in fuel cell proton-conducting membrane

A technology of coordination polymers and substances, applied in the direction of fuel cells, circuits, electrical components, etc., can solve unscientific problems and achieve good stability

Active Publication Date: 2021-03-23
PINGDINGSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to this thinking, when studying the proton conduction of MOFs, it is unscientific to select materials limited to high dimensions and holes.

Method used

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  • One-dimensional coordination polymer of nickel and its preparation method and application in fuel cell proton-conducting membrane
  • One-dimensional coordination polymer of nickel and its preparation method and application in fuel cell proton-conducting membrane
  • One-dimensional coordination polymer of nickel and its preparation method and application in fuel cell proton-conducting membrane

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Experimental program
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Effect test

Embodiment 1

[0041] The preparation method of the one-dimensional coordination polymer of nickel of the present embodiment is as follows:

[0042] Step 1. Preparation of glycine dipeptide 3-formyl 4-hydroxybenzoic acid: Weigh 0.2641 g (2 mmol) of glycine dipeptide and dissolve it in 20 mL of water, add it to a three-necked flask with a capacity of 150 mL, and heat to 80°C. Then, under magnetic stirring, 20 mL of methanol solution with 0.3340 g (2 mmol) of 3-formyl 4-hydroxybenzoic acid was added to the above solution, kept at a constant temperature, stirred for 2 hours, cooled naturally, rotary steamed, and used 1: After recrystallization from aqueous methanol solution of 4, the ligand H can be obtained 4 L (molecular formula: C 12 h 12 N 2 o 6 ), the yield is 55%.

[0043] Step 2. Preparation of Ni complex single crystal: Weigh 0.0140g (0.05mmol) ligand H 4 L, 0.0290g (0.10mmol) Ni(NO 3 ) 2 ·6H 2 O, 0.0084g (0.20mmol) LiOH·H 2 O, add it into a small glass bottle with a capacity ...

Embodiment 2

[0049] The preparation method of the one-dimensional coordination polymer of nickel of the present embodiment is as follows:

[0050] Step 1. Preparation of glycine dipeptide 3-formyl 4-hydroxybenzoic acid: Weigh 0.5282g (4mmol) glycine dipeptide and dissolve it in 30mL of water, add it to a three-necked flask with a capacity of 250mL, and heat to 80°C. Then, under magnetic stirring, 30 mL of methanol solution with 0.6680 g (4 mmol) of 3-formyl 4-hydroxybenzoic acid was added to the above solution, kept at a constant temperature and stirred for 4 hours, naturally cooled, rotary steamed, with 1: After recrystallization from aqueous methanol solution of 4, the ligand H can be obtained 4 L (molecular formula: C 12 h 12 N 2 o 6 ), the yield is 50%.

[0051] Step 2. Preparation of Ni complex single crystal: Weigh 0.0280g (0.10mmol) ligand H 4 L, 0.0580g (0.20mmol) Ni(NO 3 ) 2 ·6H 2 O, 0.0168g (0.40mmol) LiOH·H 2 O, add it into a small glass bottle with a capacity of 15mL ...

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Abstract

The invention discloses a one-dimensional coordination polymer of nickel, its preparation method and its application in the proton conduction membrane of a fuel cell. The structural formula of the coordination polymer is: [(Ni 2 L(H 2 O) 3 )·3H 2 O] n (1), belonging to the monoclinic crystal system, P2(1) / c space group, the molecular chains of the coordination polymer are distributed along the b-axis direction perpendicular to the ac plane, and no hydrogen bond path is formed along the b-axis direction of the one-dimensional molecular chain, while a chain passing through the outer core Ni and parallel to the ac plane In the series of planes, a stable, complex, and diverse hydrogen bond network is formed, which contributes to the proton conductivity of the complex. The polymer crystal sample has good stability. It can keep the basic structure unchanged after being soaked in water for one month, refluxed in boiling water for 20 hours, before and after the conductivity test, etc. has potential application value.

Description

technical field [0001] The invention belongs to the chemical field of functional complexes, and in particular relates to a nickel one-dimensional coordination polymer, a preparation method thereof and an application in proton-conducting membranes of fuel cells. Background technique [0002] As a highly efficient electrochemical power generation device, fuel cells (FCs) have been considered as the preferred energy source for a wide range of applications. As a non-polluting and clean power generation device, hydrogen-oxygen fuel cells are favored due to their high energy density and high energy conversion rate. The working principle of this type of battery is: oxygen is used as the positive electrode, and hydrogen is used as the negative electrode. The hydrogen loses electrons on the negative electrode and flows into the positive electrode through an external circuit. The cationic hydrogen passes through the proton exchange membrane and combines with the oxygen in the positive...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00H01M8/1048
CPCC08G83/008H01M8/1048Y02E60/50Y02P70/50
Inventor 李付安高航杨维春李艳岭
Owner PINGDINGSHAN UNIVERSITY
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