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Polymer solid electrolyte, method of making the same, and electrochemical cell

A solid electrolyte, polymer technology, applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, solid electrolytes, etc., can solve problems such as combustion or even explosion, LIBs fire, etc.

Inactive Publication Date: 2020-05-15
林奈公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The safety problems in LIBs may be caused by the use of mixed flammable solvents such as carbonate / ether as the solvent system, which can cause serious fire, combustion or even explosion of LIBs under the conditions of overcharging, short circuit, overheating, etc. ACCIDENT

Method used

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  • Polymer solid electrolyte, method of making the same, and electrochemical cell
  • Polymer solid electrolyte, method of making the same, and electrochemical cell
  • Polymer solid electrolyte, method of making the same, and electrochemical cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] This example shows the synthesis of a PEG-urethane-diepoxy polymer having the general structure:

[0077]

[0078] In this example, 40 mmol of 4,7,10-trioxa-1,13-tridecanediamine (TTDDA; commonly known as polyethylene glycol diamine (PEGDAm)), 200 mmol of pyridine and 100 ml of CHCl3 Add to 250 mL round bottom flask. The mixture was stirred at -10 °C for 10 min, then 80 ml of 85 mmol triphosgene in CHCl was added within 10 min at -20 °C 3 The solution was added to the solution. These are generally all commercially available; in particular, PEGDAm is available in a molecular weight range corresponding to the number of repeating units of polyethylene glycol within the compound. see also Figure 5 .

[0079] The mixture was stirred at 0 °C for 5 h, then a pale yellow solution was obtained. 100ml of 0.1mol / l hydrochloric acid was poured into the reaction mixture, and the product was collected and washed with 200ml CHCl 3 Wash twice. Using MgSO 4 After drying, the ...

Embodiment 2

[0087] This example shows the synthesis of PEG-urea-diepoxy polymers having the general structure:

[0088]

[0089] In this example, 40 mmol of 4,7,10-trioxa-1,13-tridecanediamine (TTDDA; commonly known as polyethylene glycol diamine (PEGDAm)), 200 mmol of pyridine and 100 ml of CHCl 3 Add to 250 mL round bottom flask. The mixture was stirred at -10 °C for 10 min, then 80 ml of 85 mmol triphosgene in CHCl was added within 10 min at -20 °C 3 The solution was added to the solution. The mixture was then stirred at 0 °C for 5 h. A pale yellow solution was obtained.

[0090] 100 ml of 0.1 mol / L hydrochloric acid was added to the reaction mixture to obtain a two-phase separated liquid mixture. The product was collected and washed with 200ml CHCl 3 Wash twice. By adding MgSO 4 Remove moisture from the product. After evaporation of the solvent, a light brown crude diisocyanate is obtained. The product (PEG-diisocyanate or PEGDI) was purified by silica gel column.

[0091...

Embodiment 3

[0095] This example shows the synthesis of decyl-polyurethane-diepoxy, polymer B (see image 3 ):

[0096]

[0097] In this structure, n is 5. In this example, 60mmol 1,10-diaminodecane, 120mmol pyridine and 50ml CHCl 3 Add to 100ml round bottom flask. The mixture was stirred at -20°C for 30 min, then 80 ml of 85 mmol triphosgene in CHCl 3 The solution was added to the solution at -20°C within 10 min. The mixture was then stirred at 0 °C for 12 h. A pale yellow solution was obtained.

[0098] 100 ml of 0.1 mol / l hydrochloric acid was added to the reaction mixture to obtain a two-phase separated liquid mixture. The product was collected and washed with 200ml CHCl 3 Wash twice. By adding MgSO 4 Remove moisture from the product. After evaporation of the solvent, a light brown crude diisocyanate is obtained. The product (decyl diisocyanate or DDI) was purified by silica gel column.

[0099] 10mmol DDI and 25mmol glycidol were reacted at 0°C for 24h under the catalys...

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Abstract

The invention relates to a polymer solid electrolyte, a method of making the same, and an electrochemical cell. The present invention generally relates to various polymer solid electrolyte materials suitable for various electrochemical devices. Certain embodiments of the invention are generally directed to solid electrolytes having relatively high ionic conductivity and other mechanical or electrical properties, e.g., tensile strength or decomposition potential. Certain aspects include a polymer, a plasticizer, and an electrolyte salt. In some cases, the polymer may exhibit certain structuressuch as:,where R1 can be one of the following groups: where n is an integer between 1 and 10000, m is a integer between 1 and 5000, and R2 to R6 can each independently be one of the following structures: shown in the description.

Description

[0001] related application [0002] This application claims the benefit of U.S. Provisional Patent Application Serial No. 62 / 757,133, entitled "Polymer Solid State Electrolytes," filed November 7, 2018, by Huang et al., which is hereby incorporated by reference in its entirety. technical field [0003] The present invention generally relates to various polymer solid electrolyte materials suitable for electrochemical devices such as batteries, capacitors, sensors, concentrators, electrochromic elements, and photoelectric conversion elements. Background technique [0004] As the energy density and scale of lithium-ion batteries (LIBs) increase, finding solutions to LIBs safety issues becomes more important for LIBs development. The safety problems in LIBs may be caused by the use of mixed flammable solvents such as carbonate / ether as the solvent system, which can lead to serious fire, combustion or even explosion of LIBs under the conditions of overcharging, short circuit, ove...

Claims

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Application Information

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IPC IPC(8): H01M10/0565H01M10/058H01M10/0525C08G18/50
CPCH01M10/0565H01M10/058H01M10/0525C08G18/5021H01M2300/0022H01M2300/0082H01M2300/0091Y02E60/10Y02P70/50C08F22/22C08F2810/20C08G59/28C08J3/24H01G9/0036H01G9/028
Inventor 黄沛屾傅国鹏都佳任东
Owner 林奈公司
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