Method for improving rate capability of solid-state lithium battery
A rate performance, solid-state lithium technology, applied in the field of improving the rate performance of solid-state lithium batteries, can solve problems such as large impedance, and achieve the effect of improving rate performance and suppressing electronic conductance
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Embodiment 1
[0032] (1) Press the sulfide solid electrolyte into a sheet to obtain a substrate; the sulfide solid electrolyte is Li 2 S-P 2 S 5 ;
[0033] (2) First coat the mixed slurry of aluminum chloride / aluminum hydroxide on the surface of the substrate, then coat the mixture of positive electrode precursor slurry and lithium salt, then heat treatment under high pressure conditions, and then slowly lower to room temperature, A sheet-shaped solid electrolyte loaded with doped positive electrode material is obtained; in the mixed slurry, the mass ratio of aluminum chloride and aluminum hydroxide is 100:30; in the mixture, the mass ratio of positive electrode precursor slurry and lithium salt is 100: 20. The positive electrode precursor slurry is Ni 0.33 co 0.33 mn 0.33 (OH) 2 , the lithium salt is LiOH; the pressure under high pressure conditions is 2.1MPa; the heat treatment process is to heat to 195°C and hold for 35min, then slowly raise the temperature to 680°C and hold for 10...
Embodiment 2
[0040] (1) Press the sulfide solid electrolyte into a sheet to obtain a substrate; the sulfide solid electrolyte is Li 2 S-SiS 2 ;
[0041] (2) First coat the mixed slurry of aluminum chloride / aluminum hydroxide on the surface of the substrate, then coat the mixture of positive electrode precursor slurry and lithium salt, then heat treatment under high pressure conditions, and then slowly lower to room temperature, A sheet-shaped solid electrolyte loaded with doped positive electrode material is obtained; in the mixed slurry, the mass ratio of aluminum chloride and aluminum hydroxide is 100:20; in the mixture, the mass ratio of positive electrode precursor slurry and lithium salt is 100: 10. The positive electrode precursor slurry is Ni 0.33 co 0.33 mn 0.33 (OH) 2 , the lithium salt is Li 2 CO 3 The pressure under high pressure conditions is 1.8MPa; the heat treatment process is: heating to 190°C and holding for 40 minutes, then slowly raising the temperature to 650°C a...
Embodiment 3
[0046] (1) Press the sulfide solid electrolyte into a sheet to obtain a substrate; the sulfide solid electrolyte is Li 2 S-GeS 2 ;
[0047] (2) First coat the mixed slurry of aluminum chloride / aluminum hydroxide on the surface of the substrate, then coat the mixture of positive electrode precursor slurry and lithium salt, then heat treatment under high pressure conditions, and then slowly lower to room temperature, Prepare the lamellar solid electrolyte of load doping positive electrode material; In the mixed slurry, the mass ratio of aluminum chloride, aluminum hydroxide is 100: 40; In the mixture, the mass ratio of positive electrode precursor slurry, lithium salt is 100: 30, the positive electrode precursor slurry is Ni 0.33 co 0.33 mn 0.33 (OH) 2 , the lithium salt is Li 2 CO 3 The pressure under high pressure conditions is 2.4MPa; the heat treatment process is to heat to 200°C and hold for 30min, then slowly raise the temperature to 700°C and hold for 10h, then rai...
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