Method for constructing sodium-ion battery layered metal oxide ordered structure to improve air stability of sodium-ion battery layered metal oxide ordered structure
An oxide and layered technology, which is applied in the field of electrochemical power sources, can solve the problems of short service life and poor electrochemical performance of layered oxides, and achieve improved air stability, simple and easy preparation process, and rich and extensive sources of raw materials. Effect
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Embodiment 1
[0027] (1) Preparation of NaNi 2 / 3 Ir 1 / 3 o 2 Cathode material
[0028] Weigh Na according to the corresponding proportion 2 CO 3 , NiO, IrO 2 , ball milled for 24h, pressed into a disc with a diameter of 10mm under a pressure of 10MPa, and calcined at 950°C for 15h in a muffle furnace to obtain a sample powder.
[0029] (2) For NaNi 2 / 3 Ir 1 / 3 o 2 Sample powder for XRD test
[0030] Using an X-ray diffractometer, NaNi is obtained by using the diffraction effect of X-rays in crystalline substances 2 / 3 Ir 1 / 3 o 2 The XRD pattern of the sample powder is used to analyze the material effectively with reference to the standard PDF card.
[0031] (3) Preparation of NaNi 2 / 3 Ir 1 / 3 o 2 Composite cathode
[0032] The prepared positive electrode material is uniformly mixed with the conductive additive Super-P and the binder polyvinylidene fluoride (PVDF) in a mass ratio of 8:1:1, and the solvent N-methylpyrrolidone is added to make pulp, smear, drying and other process...
Embodiment 2
[0038] (1) Preparation of NaMg 2 / 3 V 1 / 3 o 2 Cathode material. (Raw material is Na 2 CO 3 , MgO, VO 2 , and all the other steps are the same as in Example 1. )
[0039] (2) For NaMg 2 / 3 V 1 / 3 o 2 Sample powder carries out XRD test (concrete steps are with embodiment 1)
[0040] (3) Preparation of NaMg 2 / 3 V 1 / 3 o 2 Composite positive electrode (concrete steps are with embodiment 1)
[0041] (4) assemble sodium ion battery (concrete steps are with embodiment 1)
[0042] (5) Sodium ion battery test (concrete steps are the same as embodiment 1)
Embodiment 3
[0044] (1) Preparation of NaCu 2 / 3 Sb 1 / 3 o 2 Cathode material. (Raw material is Na2 CO 3 , CuO, Sb 2 o 3 , and all the other steps are the same as in Example 1. )
[0045] (2) For NaCu 2 / 3 Sb 1 / 3 o 2 Sample powder carries out XRD test (concrete steps are with embodiment 1)
[0046] (3) Preparation of NaCu 2 / 3 Sb 1 / 3 o 2 Composite positive electrode (concrete steps are with embodiment 1)
[0047] (4) assemble sodium ion battery (concrete steps are with embodiment 1)
[0048] (5) Sodium ion battery test (concrete steps are the same as embodiment 1)
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