Composite electrolyte and electrochemical device using composite electrolyte and electronic device

Abstract

The invention relates to a composite electrolyte and an electrochemical device using the composite electrolyte and an electronic device, and particularly provides a composite electrolyte comprising aninorganic solid electrolyte; an organic solid electrolyte; an organic additive; and a lithium salt, wherein the organic additive has a boiling point within the range of 150-350 DEG C, and the contentof the lithium salt is within the range of about 12wt%-50wt% based on the total weight of the composite electrolyte. The composite electrolyte has good conductivity. The lithium ion battery preparedby the composite electrolyte can realize operation at room temperature and low temperature and has low battery impedance and high battery capacity.

Description

technical field

[0001] The application relates to the field of energy storage, in particular to composite electrolytes and electrochemical devices and electronic devices using the same. Background technique

[0002] With the widespread application of electronic devices such as cameras, digital video cameras, mobile phones, and notebook computers, the performance requirements of electrochemical devices (eg, lithium-ion batteries) are getting higher and higher. Lithium-ion batteries have the advantages of high energy density, long cycle life, and no memory effect, and have been widely used in various fields. The electrolyte used in traditional lithium-ion batteries is flammable. Therefore, the use of high-safety solid-state electrolytes as electrolyte substitutes has become one of the research directions. A single inorganic solid-state electrolyte has high electrical conductivity, but its inherent rigidity leads to poor adhesion between it and the electrode sheet, and large i...

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