Sodium-ion solid-state battery and preparation process thereof

A solid-state battery and preparation technology, which is applied in the manufacture of electrolyte batteries, secondary batteries, non-aqueous electrolyte batteries, etc., can solve the problems of low electrochemical performance, poor thermal stability, poor mechanical stress, etc., and achieve the goal of improving the rate performance Effect
CN111969243AInactive Publication Date: 2020-11-20山西穿越光电科技有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
山西穿越光电科技有限责任公司
Publication Date
2020-11-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a sodium-ion solid-state battery. The sodium-ion solid-state battery comprises a battery shell, a current collector, a positive electrode material, a negative electrode material and solid electrolyte, the negative electrode material is a metal sodium electrode; the positive electrode material is a metal sulfide material; and the solid electrolyte is a sodium salt metal oxide composite material. The sodium-ion solid-state battery comprises the following components, parts by weight: 60-100 parts of phenolic resin, 80-100 parts of silicon dioxide / silicon nanoparticles, 0.1-0.5 part of N and B doped graphite microparticles, 650-730 parts of sodium zirconate, 1-3 parts of sodium niobate, 2-5 parts of polyethylene glycol terephthalate and 3-7 parts of azobenzene. The silicon dioxide / silicon particles provide a stable channel for ion transmission to improve the rate capability, with the addition of the azobenzene, the interconnection between the crystal lattices can be enhanced, the sodium ion diffusion and migration channels are increased, the graphite micro-particles are N and B doped, and the hot dryness, the lubricity and the electrical conductivity of the graphite are improved through the N and B element doping, such that the cycle performance of the sodium ion solid-state battery is improved, and the industrial production is easily achieved.
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Description

technical field

[0001] The invention belongs to the technical field of preparation of all-solid-state sodium-ion batteries, and in particular relates to a sodium-ion solid-state battery with stable cycle output energy and a preparation process thereof. Background technique

[0002] In recent years, rechargeable lithium (Li) batteries, as important energy storage devices, have been widely used in portable electronic devices and electric vehicles due to their high energy density and long cycle life. However, conventional lithium batteries usually have flammable liquid electrolytes, which easily lead to safety issues. A promising solution is to use solid electrolytes instead of conventional liquid electrolytes. In addition, the use of solid electrolytes enables the application of lithium metal anodes and high-voltage cathodes, which can not only prevent the growth of lithium dendrites but also improve the energy density of solid-state lithium batteries.

[0003] However, due ...

Claims

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