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Preparation method of metal complex lithium ion battery electrode material

A lithium-ion battery, metal complex technology, applied in battery electrodes, electrode manufacturing, electrolyte battery manufacturing and other directions, can solve the problems of low energy density, poor low temperature performance, etc., to achieve low requirements for synthesis equipment, low price, stable structure. Effect

Active Publication Date: 2018-01-19
QUJING NORMAL UNIV
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AI Technical Summary

Benefits of technology

This patented technology provides an improved method for making certain types of metallic compounds that can store more energy than existing ones while still being effective. These improvements make it possible to create high performance secondary cells by improving their ability to release stored electrical charge quickly or easily overcomes problems such as poor cycling characteristics caused when traditional cathode compositions are applied during charging.

Problems solved by technology

This patented describes different types of battery technology: Lithium-lon (Li) chemistry, which uses transition metal oxides or phosphates as positive active materials, while other technical problem addressed by this patents include improving cell design, reducing costs associated with manufacturing processes, increasing capacity per unit area without sacrificing reliability, enhancing cycling life under extreme conditions such as overcharge, thermal runaway, etc., and developing novel elec trolyte compositions containing specific chemicals called certain substances capable of reacting reversibly with lanthanum trioxide complexes like LaNi0_3or Phyllosilicate phases.

Method used

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  • Preparation method of metal complex lithium ion battery electrode material
  • Preparation method of metal complex lithium ion battery electrode material
  • Preparation method of metal complex lithium ion battery electrode material

Examples

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example 1

[0039] Example 1. Weigh 1.28 g (5 mmol) of magnesium nitrate hexahydrate and 1.48 g (2.5 mmol) of N,N-bis(5-isophthalic acid)-1,4,5,8-naphthalimide , Add 30ml DMF, then add 2ml of 3mol / L hydrochloric acid, and stir for 30min at room temperature. The stirred mixture was added to a 50ml Teflon autoclave, and the sealed reactor was placed in an oven at 95°C for two days, and then naturally cooled to room temperature to obtain yellow-brown block crystals. The synthesized complex was soaked in ethanol for 24 hours, filtered, and vacuum dried at 80°C for 12 hours to remove the solvent molecules in the pores of the complex to obtain the activated complex Mg-NDI. The dried Mg-NDI was ground through a 300 mesh sieve. According to the metal complex Mg-NDI, polyvinylidene fluoride (PVDF), conductive carbon black Super-P according to the mass ratio of 60:10:30 to prepare a mixture, add the solvent N-methylpyrrolidone (NMP), and stir for 2h to prepare Viscous slurry electrode material. T...

Embodiment 2

[0041] Example 2: 5, 6, 7, 8, weigh 1.28 g (5 mmol) of magnesium nitrate hexahydrate and 1.48 g (2.5 mmol) of N,N-bis(5-isophthalic acid)-1,4, 5,8-Naphthalimide, add 30ml DMF, then add 6mol / L hydrochloric acid 2ml, and stir for 60min at room temperature. The stirred mixture was added to a 50ml Teflon autoclave, and the sealed reactor was placed in an oven at 95°C for two days, and then naturally cooled to room temperature to obtain yellow-brown block crystals. The synthesized complex was soaked in ethanol for 24 hours, filtered, and vacuum dried at 80°C for 12 hours to remove the solvent molecules in the pores of the complex to obtain the activated complex Mg-NDI2. The dried Mg-NDI2 was ground through a 300 mesh sieve. According to the metal complex Mg-NDI, polyvinylidene fluoride (PVDF), conductive carbon black Super-P according to the mass ratio of 50:10:40 to prepare a mixture, add the solvent N-methylpyrrolidone (NMP), and stir for 2h to prepare Electrode material viscous...

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Abstract

A preparation method of a metal complex lithium ion battery electrode material comprises the steps of uniformly mixing Mg(NO3)<2>.6H2O and N, N-bi(5-isophthalic acid)-1, 4, 5, 8-naphthalimide according to a mole ratio being 2:1, adding 30mL of dimethylformamide (DMF) used as a solvent, adding 3mol/L of hydrochloric acid, and performing normal-temperature stirring; placing the previously-obtained mixture in a high-pressure reaction kettle, performing heat preservation for two days at 95 DEG C, and performing cooling to obtain Mg-NDI; immersing the Mg-NDI complex in the previous step in alcoholfor 24 hours, and performing vacuum drying after filtering to obtain an activated metal complex; preparing the metal complex in the previous step, polyvinylidene fluoride and conductive carbon black according to a mass ratio being 60:10:30 to form a mixture, adding the solvent N-methyl pyrrolidone, and performing stirring to form a viscous paste-shaped electrode material; and coating the viscous paste-shaped electrode material onto a metal copper foil, and performing drying to obtain the lithium ion battery electrode material.

Description

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Claims

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Application Information

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Owner QUJING NORMAL UNIV
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