Polyquaternary triphenylamine and its application as a cathode material for lithium-ion batteries

A technology of polyquadruple triphenylamine and lithium-ion batteries, which is applied in the direction of battery electrodes, circuits, electrical components, etc., can solve the problem of low discharge specific capacity, and achieve increased free radical density, good cycle performance, and good charge and discharge voltage platform Effect

Active Publication Date: 2017-04-12
ZHEJIANG UNIV OF TECH
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the measured discharge specific capacity of the organic free radical battery prepared by the above-mentioned triphenylamine polymer is not high, and it is not as good as LiCoO2, the cathode material for commercial lithium-ion secondary batteries. 2 Capacity 140mAh·g -1

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyquaternary triphenylamine and its application as a cathode material for lithium-ion batteries
  • Polyquaternary triphenylamine and its application as a cathode material for lithium-ion batteries
  • Polyquaternary triphenylamine and its application as a cathode material for lithium-ion batteries

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1: polyquaterphenylamine, polytriphenylamine

[0048] Synthesis of quadruple triphenylamine: Add 4.8454g (15mmol) 4-bromotriphenylamine and 1.3016g (5mmol) N,N'-diphenyl-1,4-phenylenediamine to a pre-dried 250mL three-necked flask , 1.6872g (15mmol) potassium tert-butoxide, 0.05g palladium acetate, then add 40mL toluene solution, after stirring evenly, inject 5mL tri-tertbutylphosphine into the reaction system with a syringe under the protection of nitrogen, and reflux at 110°C for 12 Hour. After the reaction, the reaction solution was filtered, the filter cake was repeatedly washed with water and toluene, and dried to finally obtain the target product tetraphenyltriphenylamine as a gray-green solid, 3.28 g, with a yield of 87.90%. Quadruple triphenylamine NMR spectrum as shown figure 1 As shown, the mass spectrogram is as figure 2 shown. 1 H NMR (500MHz, CDCl 3 )δ7.25(t, J=7.8Hz, 12H), 7.11(t, J=6.7Hz, 12H), 7.04–6.94(m, 18H).MS(EI): calculated for C ...

Embodiment 2

[0056] The polyquaterphenylamine and polytriphenylamine obtained in Example 1 are respectively used as the active material of the positive electrode material, and the lithium-ion battery is prepared according to the following steps:

[0057] a) Weigh 0.01 g of binder powder (polyvinylidene fluoride: PVDF) and disperse it in 1 ml of N-methylpyrrolidone solvent, seal and stir, and slightly heat to obtain a bonding slurry.

[0058] b) Weigh 0.04g of acetylene black and 0.05g of the prepared polymer powder and mix them evenly.

[0059] c) Pour the mixture in b) into the bonding slurry in a), then add 3ml of N-methylpyrrolidone, stir and mix evenly to obtain a mixed slurry with moderate viscosity.

[0060] d) The slurry in c) is evenly coated on the aluminum foil, and then vacuum-dried in an oven at 60° C. for 24 hours to obtain a positive electrode sheet.

[0061] e) With the positive electrode sheet prepared in d) as the positive electrode, the metal lithium sheet as the negativ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a polytetratriphenylamine and application thereof as a lithium ion battery positive pole material. The invention discloses a polytetratriphenylamine disclosed as Formula (I) and a preparation method thereof, and application of the polytetratriphenylamine as a lithium ion battery positive pole material. The lithium ion battery prepared by using the polytetratriphenylamine as the positive pole material has favorable charging / discharging voltage platform and cycle performance, and the discharging specific capacity can reach 74.2 mAh / g; and after 50 cycles, the discharging specific capacity is kept at 98% above.

Description

technical field [0001] The invention belongs to the technical field of lithium-ion batteries, and in particular relates to a polyquaternary triphenylamine and its application as a lithium-ion battery positive electrode material, and a lithium-ion battery prepared therefrom. Background technique [0002] With the further development of human society, the energy problems, resource problems and environmental problems facing the world are becoming more and more serious. Since the current energy structure is basically built on the basis of petrochemical fuels (petroleum, coal, natural gas), this not only causes the depletion of resources but also pollutes the environment. Electric energy will play an increasingly important role in the future due to its cleanliness, safety and convenience. Therefore, in the future, lithium-ion batteries with good mobility and convenient power storage and power supply will play a pivotal role in a society based on electric energy. [0003] In the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12H01M4/60
CPCY02E60/10
Inventor 张诚纪律律苏畅徐立环吕耀康朱晓刚何晖晖蔡志威
Owner ZHEJIANG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap