A Na-ion battery with high-rate discharge cycle performance 2/3 mn 1/2 fe 1/4 co 1/4 o 2 Controllable regulation of cathode materials

Abstract

The patent of the present invention relates to a sodium-ion battery Na that satisfies high-rate discharge cycle performance 2 / 3 Mn 1 / 2 Fe 1 / 4 Co 1 / 4 O 2 The controllable regulation method of positive electrode material, which is based on sodium carbonate (molecular formula is Na 2 CO 3 ), manganese trioxide (molecular formula is Mn 2 O 3 ), ferric oxide (molecular formula is Fe 2 O 3 ) and cobalt carbonate (molecular formula CoCO 3 ) as the raw material, fully mixed after weighing according to the stoichiometric ratio to obtain the precursor compact sheet; the microwave sintering technology was used to synthesize the sodium ion battery Na 2 / 3 Mn 1 / 2 Fe 1 / 4 Co 1 / 4 O 2 positive electrode material. The technical route has the characteristics of simple process, fast reaction speed, controllable product morphology and low cost, and is suitable for the rapid and controllable preparation of cathode materials and related materials for sodium-ion batteries. 2 / 3 Mn 1 / 2 Fe 1 / 4 Co 1 / 4 O 2 The material has high specific capacity, good cycle stability and high rate performance, which provides a valuable basis for improving the comprehensive electrochemical performance of sodium-ion batteries.

Description

technical field [0001] The invention belongs to the field of synthesis and application of sodium ion battery materials, in particular to a sodium ion battery Na which satisfies high-rate discharge cycle performance 2 / 3 Mn 1 / 2 Fe 1 / 4 Co 1 / 4 O 2 Controllable regulation of cathode materials. [0002] technical background [0003] With the continuous destruction of the natural ecological environment and the increasing depletion of non-renewable resources, how to efficiently utilize renewable resources such as tidal energy, solar energy, biomass energy, and develop new energy storage systems has become very urgent. Lithium-ion batteries are widely used due to their advantages of high specific capacity, no memory effect, and long life; however, the limited reserves of lithium resources, uneven geographical distribution, and the increasing demand for lithium-ion batteries in social development have led to lithium-ion batteries. Rising battery prices have largely hindered the de...

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Problems solved by technology

The traditional sintering method mainly relies on heat radiation or heat convection, and heats the target reactant layer by layer from the surface to the inside or from top to bottom, which has the disadvantages of slow heating rate and long reaction time.

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