Patent ID: 11939230
Assignee: HUNAN BRUNP RECYCLING TECHNOLOGY CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC C  H  B  Y | IPC C  H

Claim 0:
1. A preparation method of a metal sulfide negative material of a sodium ion battery, comprising the following steps of:
S1: preparing a mixed solution of stannous chloride and metal salt, wherein the metal salt is at least one of zinc salt or copper salt;
S2: adding polyvinylpyrrolidone into the mixed solution to obtain a solution A;
S3: introducing reaction gas into the solution A, wherein the reaction gas is a mixed gas of hydrogen sulfide and nitrogen, aging after the reaction, and performing solid-liquid separation to obtain a precipitate; and
S4: soaking the precipitate into a persulfide solution, and performing solid-liquid separation, then washing and drying an obtained solid, thus obtaining the metal sulfide negative material of the sodium ion battery; wherein the persulfide solution is a solution of one or two of sodium persulfate and ammonium persulfate;
wherein the metal sulfide negative material of the sodium ion battery has porous nanoparticles with a particle size of 5 nm to 500 nm, and the metal sulfide negative material of the sodium ion battery is at least one of zinc sulfide or copper sulfide.