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Polyelectrolytes and energy storage elements

A polyelectrolyte and repeating unit technology, applied in the field of energy storage, can solve problems such as poor ionic conductivity, hindering application and commercialization, and achieve the effect of improving characteristics

Active Publication Date: 2017-05-10
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although the above-mentioned polyelectrolyte can inhibit the deposition and puncture of lithium metal, increase the safety of lithium batteries, and can be prepared flexibly in size and shape, it is suitable for various lithium batteries, but its poor ion conductivity (solid polymer electrolyte is ~ 10 -5 S / cm, single ion conductor is ~10 -6 S / cm) has been hindering its application and commercialization

Method used

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Embodiment Construction

[0058] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0059] The polyelectrolyte of the present invention includes a first segment and a second segment, wherein the first segment structure is at least one of formula (1) and formula (2); the second segment structure is formula (3) and formula ( 4) At least one of them. The molecular weight of the first segment (M W ) Is, for example, between 10,000 and 90,000; the molecular weight of the second segment is, for example, between 10,000 and 30,000.

[0060]

[0061] In formula (1), R 1 ~R 8 Each independently is H, F or n=1-10, x=1-1000. In addition, the molecular repeating unit x of the first segment is preferably 300-900.

[0062]

[0063] In formula (2), R 9 ~R 11 Each independently is H, F or R 12 for R 13 for R 14 For H...

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Abstract

The invention discloses a polyelectrolyte and an energy storage element. The polyelectrolyte includes a first chain segment and a second chain segment, wherein the structure of the first chain segment is at least one of formula (1) and formula (2); the first The two-segment structure is at least one of formula (3) and formula (4). The polyelectrolyte undergoes microphase separation to form a nanoscale ordered self-assembled microstructure.

Description

Technical field [0001] The invention relates to an energy storage technology, in particular to a polyelectrolyte and an energy storage element. Background technique [0002] As people's demand for high-power and high-energy density lithium secondary batteries continues to increase, more and more research units are committed to improving their safety and stability. Because people’s reliance on portable electronic products is increasing, and it is expected to increase the application of electrochemical energy storage devices in vehicles, uninterruptible power systems, etc., the safety of lithium secondary batteries must be further strictly required, especially for high-altitude flights. Aircraft or space shuttle. The current research on safety usually focuses on the development of flame retardant additives, solid electrolytes or new electrolyte systems, etc., all of which are to improve the various problems of liquid electrolytes and increase the thermal stability of electrochemic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0565H01M6/22H01M8/1027H01G11/56H01G9/025
CPCC08C19/04C08F12/22C08F212/08C08F212/14H01G9/028H01G11/56H01G11/60H01G11/62H01G11/64H01M10/052H01M10/0565H01M2008/1095H01M2300/0082C08F236/08C08F8/12C08F8/44C08F236/10C08F212/22Y02E60/10Y02E60/50C08F8/34Y02E60/13
Inventor 赵崇翔蔡丽端方家振张志清赵基扬刘昆霖
Owner IND TECH RES INST
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