Preparation and applications of two three dimensional pseudo-rotaxane type metal organic framework materials with multiple acid groups

A technology of organic frameworks and quasi-rotaxanes, applied in 1/11 group organic compounds without C-metal bonds, 6/16 group organic compounds without C-metal bonds, organic chemistry, etc., can solve the problem of low capacitance performance problem, to achieve the effect of improving conductivity, high cycle stability, and improving conductivity

Inactive Publication Date: 2018-12-07
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that some polyacid-based metal-organic framework materials have low capacitance performance as supercapacitor electrode materials, and provide a preparation method of a material that can improve capacitance performance

Method used

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  • Preparation and applications of two three dimensional pseudo-rotaxane type metal organic framework materials with multiple acid groups
  • Preparation and applications of two three dimensional pseudo-rotaxane type metal organic framework materials with multiple acid groups
  • Preparation and applications of two three dimensional pseudo-rotaxane type metal organic framework materials with multiple acid groups

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specific Embodiment approach 1

[0025] Specific implementation mode 1: The chemical formulas of the two kinds of three-dimensional pseudorotaxane-type polyacid-based metal-organic framework materials in this embodiment are [Cu II Cu I 3 (H 2 O) 2 (btx) 5 (PW VI 10 W V 2 o 40 )]·2H 2 O (1) and [Cu II 2 Cu I 2 (btx) 5 (SiMo VI 10 Mo V 2 o 40 )]·6H 2 O (2), where btx is 1, 4-bis(triazole-1-methyl)benzene; the crystal appearances are green and black blocks respectively; the crystal system is triclinic; the space group is P- 1; the unit cell parameters are a =13.2381(4) Å, b =13.4004(4) Å, c =14.6492(5) Å, α= 108.492(3)°, β=92.529(3)°, γ=97.260(3)°, V =2434.96(14) Å 3 and a =13.126(2) Å, b =13.321(2)Å, c =14.537(2) Å, α=108.382(4)°, β=92.714(4)°, γ=96.899(4)°, V =2384.7(7) Å 3 .

specific Embodiment approach 2

[0026] Specific embodiment two: The preparation method of two kinds of polyacid-based metal-organic framework supercapacitor electrode materials in this embodiment is completed according to the following steps:

[0027] 1. Prepare a reaction solution with a pH value of 2: add K 4 Na 6 [ α -1,2-PW 10 Ti 2 o 39 ] 2 14H 2 Add O or silicomomolybdic acid, metal copper salt, and 1,4-bis(triazole-1-methyl)benzene into distilled water and stir evenly, and then adjust the pH value of the suspension to 2;

[0028] K as mentioned in step 1 4 Na 6 [ α -1,2-PW 10 Ti 2 o 39 ] 2 14H 2 O or H 4 [SiMo 12 o 40 ]·6H 2 The molar ratio of O to metal salt is 1:(1~3);

[0029] K as mentioned in step 1 4 Na 6 [ α -1,2-PW 10 Ti 2 o 39 ] 2 14H 2 O or H 4 [SiMo 12 o 40 ]·6H 2 The molar ratio of O to 1,4-bis(triazole-1-methyl)benzene is 1:(1~2);

[0030] K as mentioned in step 1 4 Na 6 [ α -1,2-PW 10 Ti 2 o 39 ] 2 14H 2 O or H 4 [SiMo 12 o 40 ]·6H 2 The amount ...

specific Embodiment approach 3

[0033] Specific implementation mode three: K described in this implementation mode 4 Na 6 [ α -1,2-PW 10 Ti 2 o 39 ] 2 14H 2 O According to literature (He, J.; Wang, X.; Chen, Y.; Liu, J.; Hu, N.; Jia, H. Inorganic Chemistry Communications 2002, 5 (10), 796-799.) method of synthesis. Other steps are the same as in the second embodiment.

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Abstract

The invention relates to preparation and applications of two three dimensional pseudo-rotaxane type metal organic framework materials with multiple acid groups. The invention aims to solve the problemthat the capacitance of a super capacitor whose electrodes are made of some metal organic framework materials with multiple acid groups is not high, and provides a material used as the electrode of asuper capacitor to increase the capacitance and a preparation method thereof. The chemical formulas of two materials are [CuIICuI3(H2O)2(btx)5(PWVI10WV2O40)].2H2O(1) and [CuII2CuI2(btx)5(SiMoVI10MoVI10MoV2O40)].6H2O(2), wherein btx represents 1,4-bis(triazole-1-methyl) benzene. The preparation method comprises following steps: adding polyacid, copper salts, and organic ligands into distilled water, evenly stirring, adjusting the pH value, and carrying out reactions for three days at a temperature of 160 DEG C. The specific capacitance values of two materials are 138.4 F g<-1> (1) and 82.1 F g<-1> (2) under a current density of 2 A / g. A research model is provided for improving the super electrical performance of metal organic framework materials with multiple acid groups only by changing the polyacid kinds.

Description

technical field [0001] The invention relates to the preparation and application of two three-dimensional pseudorotaxane polyacid-based metal organic framework materials. Background technique [0002] Polyoxometalates (POMs) are a class of polyoxometallic cluster materials, which usually have rich structures and have fast multiple electron transfer capabilities. Therefore, polyacids have been widely studied in catalysis, nanotechnology, biomedicine, material science, etc., especially in the fields of electricity storage materials and other fields, which show broad application prospects. As one of the most traditional polyacids, Keggin polyacid has been considered for application in the field of electricity storage. For example, phosphomolybdic acid exhibits a reduction ability of 24 electrons during discharge, and its theoretical capacitance is 270 mAh / g, which is higher than that of the commercial cathode material Li 2 CoO 2 (140mAh / g). However, polyacids are easily solu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F19/00C07D249/02C07F11/00C07F1/08H01G11/86
CPCC07B2200/13C07D249/02C07F1/005C07F11/005H01G11/86Y02E60/13
Inventor 马慧媛柴东凤庞海军王新铭
Owner HARBIN UNIV OF SCI & TECH
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