Nickel-based high-entropy alloy/carbon nanotube modified lithium carbon fluoride battery positive electrode plate and preparation method thereof

Abstract

The invention discloses a nickel-based high-entropy alloy / carbon nanotube modified lithium carbon fluoride battery positive electrode plate. The nickel-based high-entropy alloy / carbon nanotube modified lithium carbon fluoride battery positive electrode plate comprises a current collector and an active substance coating applied onto the current collector; the active substance coating comprises the following components in percentage by mass: 70-90% of carbon fluoride powder, 5-20% of catalyst powder and 5-10% of binder, wherein the catalyst is a nickel-based high-entropy alloy / carbon nanotube composite material. According to the method, the nickel-based high-entropy alloy / carbon nanotube composite material is prepared from a compound containing an iron source, a cobalt source, a copper source, a zinc source, a nickel source and a carbon source to serve as the catalyst, and then the current collector is coated with the carbon fluoride and the catalyst; after the carbon fluoride and the nickel-based high-entropy alloy / carbon nanotubes are mixed, the conductivity of the battery positive electrode material is improved, the carbon fluoride voltage hysteresis phenomenon is improved, the capacity, the storage performance, the rate capability and the platform stability of a lithium carbon fluoride high-voltage plateau are improved, and the performance improvement of a lithium carbon fluoride battery is achieved.

Description

technical field

[0001] The invention belongs to the technical field of batteries, and relates to an electrode sheet and a preparation method thereof, in particular to a nickel-based high-entropy alloy / carbon nanotube modified lithium carbon fluoride battery positive electrode sheet and a preparation method thereof. Background technique

[0002] With the rapid development of society, environmental pollution and shortage of traditional energy sources, people need more efficient and environmentally friendly energy sources to replace or supplement traditional energy sources. Lithium fluoride batteries are the primary battery system with the highest specific energy at present, and they are safe. , The advantages of long-term charged storage, no need for maintenance and activation, are widely used in various fields of land, sea, air and electricity. Carbon fluoride has the highest theoretical specific energy among cathode materials for lithium primary batteries, and the practical ...

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