Preparation method of ferrous silicate lithium doped anode material
A technology for lithium ferrous silicate and positive electrode materials, applied in the direction of silicate, alkali metal silicate, battery electrodes, etc., can solve problems such as poor discharge performance, achieve low raw material cost, simple preparation process, and good discharge performance Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0023] Weigh lithium carbonate (Li 2 CO 3 ) 70g, ferrous oxalate dihydrate (FeC 2 o 4 2H 2 O) 170g, silicon dioxide (SiO 2 )60g, sodium phosphite monohydrate (NaH 2 PO 3 ·H 2 O) 0.15g, add 2.67g polypropylene. Then add 38mL of deionized water, mix it with a ball mill at a speed of 100 rpm for 20 minutes, heat it in a water bath at 45°C for 1 hour, and then mix it with a ball mill at a speed of 100 rpm for 3 hours. dry conditions. The dried powder is placed in a nitrogen atmosphere, pre-sintered at 200° C. for 3 hours, and cooled to room temperature to prepare a matrix pre-sintered material. Add 48mL of propanol to the precursor calcined material, ball mill for 3 hours at a speed of 100 rpm, and dry in a vacuum at a temperature of 55°C and a pressure of 20Pa. The dried powder was placed in a nitrogen atmosphere and sintered at 550° C. for 3 hours to prepare doped lithium ferrous silicate. The electrode material has good discharge performance, the discharge capacity i...
Embodiment 2
[0025] Lithium hydroxide monohydrate (LiOH·H 2 O) 46g, ferrous acetate tetrahydrate ((CH 3 COO) 2 Fe·4H 2 O) 270g, tetramethyl orthosilicate (Si(OCH 3 ) 4 ) 122g, magnesium phosphite (Mg(H 2 PO 3 ) 2 ) 18.6g, add 3.6g sucrose. Then add 5164mL of ethanol, mix with ball mill at 100 rpm for 3 hours, heat in water bath at 95°C for 1 hour, then ball mill with 1000 rpm for 3 hours, and dry in vacuum at temperature 135°C and pressure 10132Pa . The dried powder is placed in a carbon monoxide atmosphere, pre-sintered at 500° C. for 12 hours, and cooled to room temperature to prepare a precursor pre-sintered material. Put 5164mL of propanol in the matrix calcined material, ball mill it at 1000 rpm for 12 hours, and dry it in a vacuum at a temperature of 135°C and a pressure of 100Pa. The dried powder is placed in a carbon monoxide atmosphere and sintered at 850° C. for 24 hours to prepare doped lithium ferrous silicate. The electrode material has good discharge performance, t...
Embodiment 3
[0027] Weigh lithium acetate (CH 3 COOLi) 63g, ferrous sulfate heptahydrate (FeSO 4 ·7H 2 O) 306g, hexamethyldisilazane ((CH 3 ) 3 SiNHSi(CH 3 ) 3 ) 145g, cobalt phosphite monohydrate (Co(H 2 PO 3 ) 3 ·H 2 (2) 45.8g, add 125g flour, add the mixed solution (volume ratio 1: 100) of 3885mL deionized water and acetone again, mix 3 hours with the rotating speed ball mill of 500 rev / mins, heat 12 hours in the water bath of 85 ℃, Then, it was ball milled at a speed of 500 rpm for 10 hours, and then dried in a vacuum at a temperature of 125° C. and a pressure of 500 Pa. The dried powder is placed in a carbon dioxide atmosphere, heated from room temperature to 200 °C at a heating rate of 0.5 °C / min, held for 3 hours for pre-sintering, and cooled to room temperature to prepare the matrix pre-sintered material. Add 78mL of deionized water to the matrix calcined material, perform ball milling at a speed of 100 rpm for 3 hours, and dry in a vacuum at a temperature of 55°C and a p...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com