Three-dimensional current collector for metal lithium negative electrode of primary/secondary battery, metal lithium negative electrode and primary/secondary battery

A secondary battery and current collector technology, which is applied in the field of metal lithium negative electrodes and primary/secondary batteries, can solve the problems of damage to the specific capacity performance of composite electrodes, side reactions, poor conductivity and wettability, etc., and achieve good rapid charge and discharge capabilities, High-capacity charge/discharge and high cycle stability
CN110444767AActive Publication Date: 2019-11-12UNIV OF SCI & TECH OF CHINA
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF SCI & TECH OF CHINA
Publication Date
2019-11-12

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Abstract

The invention provides a three-dimensional current collector for a metal lithium negative electrode of a primary / secondary battery, which is a nano-network having a porous structure and formed by weaving carbon nano-tubes or carbon nano-tube bundles. The three-dimensional current collector for the metal lithium negative electrode of the primary / secondary battery refers to a three-dimensional carbon nano-tube network material which has the three-dimensional porous structure formed by weaving the carbon nano-tubes or the carbon nano-tube bundles and used for containing metal lithium, can suppress the growth of lithium dendrites in the metal lithium secondary battery, and can realize high-capacity discharge under high current density. The metal lithium negative electrode of the primary / secondary battery prepared from the three-dimensional current collector has extremely high long cycling stability and can be charged and discharged for multiple times by extremely high specific capacity; and meanwhile, the composite negative electrode shows good rapid charge and discharge capacity.
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Description

Technical field

[0001] The invention belongs to the technical field of batteries, and specifically relates to a three-dimensional current collector used for a metal lithium negative electrode of a primary / secondary battery, a metal lithium negative electrode, and a primary / secondary battery. Background technique

[0002] In the 21st century, with the increasing requirements for battery capacity of electronic equipment and electric vehicles, the existing technology mature and widely used commercial lithium-ion batteries can no longer meet the capacity requirements. The main reason is that the theoretical specific capacity of the traditional graphite anode used in lithium-ion batteries is only 372mA h g -1 , The energy density is low, which limits the capacity of lithium-ion batteries. In order to meet the requirements of various devices for battery capacity, the world urgently needs lithium anode materials with higher specific capacity in the future. The metal lithium anode has a...

Claims

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