Method for controllably preparing NaVO2 nanosphere sodium storage electrode material

Abstract

The invention relates to the technical field of nanometer, and discloses a method for controllably preparing a NaVO2 nanosphere sodium storage electrode material. According to the method, a sodium salt and vanadium pentoxide are used as raw materials, and the NaVO2 nanosphere material which is high in purity, uniform in size and regular in morphology is prepared through a method of combining high-temperature sintering and microwave radiation. The specific area of NaVO2 is increased after nanocrystallization, the sodium storage capacity of the material can be effectively improved, and the performance of the material is optimized. The microwave radiation method is added, so that the preparation steps are simplified, the reaction time is shortened, the preparation cost is reduced, and a new thought is provided for synthesis of the sodium ion battery electrode material.

Description

technical field

[0001] The invention relates to the field of nanomaterial preparation, in particular to a controllable preparation of NaVO 2 A method for nanosphere sodium storage electrode materials. Background technique

[0002] In order to deal with problems such as economic globalization and environmental degradation, develop green and efficient energy storage technologies. Sodium-ion batteries have attracted much attention in new energy applications due to their price advantages, and are considered to be one of the ideal choices for the next generation of large-scale energy storage technologies. Its development and preparation of battery materials are extremely important. As an important part of sodium-ion batteries, cathode materials directly affect the performance and cost of batteries. The positive electrode materials of sodium-ion batteries are sodium-intercalating compounds, such as layered oxides, polyanionic oxides, and metal framework materials. Due to the la...

Examples

Embodiment 1

[0019] Embodiment 1: a precursor compact sheet with a thickness of 4 mm, with 200 watts of microwave radiation power, to prepare NaVO 2 Nanosphere electrode material

[0020] Accurately weigh 10.0000g of analytically pure V 2 o 5 Powder, the particle size of which is 200 mesh; at the same time, accurately weigh and analyze pure Na 2 CO 3 5.8275g of 5.8275g, its mesh number is 200 mesh; The above-mentioned two kinds of materials are fully mixed for 20min, and then this mixture is added into a stainless steel ball mill tank with a volume of 100ml, and the diameter of the stainless steel grinding balls added is 5mm, and the ball-to-material ratio is adjusted to be 1 : 1, adjust the rotating speed 100rpm of planetary ball mill, control the mixing temperature of grinding 50 ℃, the interval time of forward rotation and reverse rotation of ball mill is 15 minutes, the total ball milling time is 2h, separate ball mill tank and uniform powder material; 10mm is for the tableting mol...

Embodiment 2

[0023] Embodiment 2: a precursor compact sheet with a thickness of 4 mm, with 850 watts of microwave radiation power, to prepare NaVO 2 Nanosphere electrode material

[0024] Accurately weigh 10.0000g of analytically pure V 2 o 5 Powder, the particle size of which is 200 mesh; at the same time, accurately weigh and analyze pure Na 2 CO 3 5.8275g of 5.8275g, its mesh number is 200 mesh; The above-mentioned two kinds of materials are fully mixed for 20min, and then this mixture is added into a stainless steel ball mill tank with a volume of 100ml, and the diameter of the stainless steel grinding balls added is 5mm, and the ball-to-material ratio is adjusted to be 1 : 1, adjust the rotating speed 100rpm of planetary ball mill, control the mixing temperature of grinding 40 ℃, the interval time of forward rotation and reverse rotation of ball mill is 15 minutes, the total ball milling time is 2h, separate ball mill tank and uniform powder material; 10mm is for the tableting mol...

Embodiment 3

[0027] Embodiment 3: the thickness is the precursor compact sheet of 4mm, with 1500 watts of microwave radiation power, make NaVO 2 Nanosphere electrode material

[0028] Accurately weigh 10.0000g of analytically pure V 2 o 5 Powder, the particle size of which is 200 mesh; at the same time, accurately weigh and analyze pure Na 2 CO 3 5.8275g of 5.8275g, its mesh number is 200 mesh; The above-mentioned two kinds of materials are fully mixed for 20min, and then this mixture is added into a stainless steel ball mill tank with a volume of 100ml, and the diameter of the stainless steel grinding balls added is 5mm, and the ball-to-material ratio is adjusted to be 1 : 1, adjust the rotating speed 100rpm of planetary ball mill, control the mixing temperature of grinding 50 ℃, the interval time of forward rotation and reverse rotation of ball mill is 15 minutes, the total ball milling time is 2h, separate ball mill tank and uniform powder material; 10mm is for the tableting mold to...

technical field

[0001] The invention relates to the field of nanomaterial preparation, in particular to a controllable preparation of NaVO 2 A method for nanosphere sodium storage electrode materials. Background technique

[0002] In order to deal with problems such as economic globalization and environmental degradation, develop green and efficient energy storage technologies. Sodium-ion batteries have attracted much attention in new energy applications due to their price advantages, and are considered to be one of the ideal choices for the next generation of large-scale energy storage technologies. Its development and preparation of battery materials are extremely important. As an important part of sodium-ion batteries, cathode materials directly affect the performance and cost of batteries. The positive electrode materials of sodium-ion batteries are sodium-intercalating compounds, such as layered oxides, polyanionic oxides, and metal framework materials. Due to the la...

Examples

Embodiment 1

[0019] Embodiment 1: a precursor compact sheet with a thickness of 4 mm, with 200 watts of microwave radiation power, to prepare NaVO 2 Nanosphere electrode material

[0020] Accurately weigh 10.0000g of analytically pure V 2 o 5 Powder, the particle size of which is 200 mesh; at the same time, accurately weigh and analyze pure Na 2 CO 3 5.8275g of 5.8275g, its mesh number is 200 mesh; The above-mentioned two kinds of materials are fully mixed for 20min, and then this mixture is added into a stainless steel ball mill tank with a volume of 100ml, and the diameter of the stainless steel grinding balls added is 5mm, and the ball-to-material ratio is adjusted to be 1 : 1, adjust the rotating speed 100rpm of planetary ball mill, control the mixing temperature of grinding 50 ℃, the interval time of forward rotation and reverse rotation of ball mill is 15 minutes, the total ball milling time is 2h, separate ball mill tank and uniform powder material; 10mm is for the tableting mol...

Embodiment 2

[0023] Embodiment 2: a precursor compact sheet with a thickness of 4 mm, with 850 watts of microwave radiation power, to prepare NaVO 2 Nanosphere electrode material

[0024] Accurately weigh 10.0000g of analytically pure V 2 o 5 Powder, the particle size of which is 200 mesh; at the same time, accurately weigh and analyze pure Na 2 CO 3 5.8275g of 5.8275g, its mesh number is 200 mesh; The above-mentioned two kinds of materials are fully mixed for 20min, and then this mixture is added into a stainless steel ball mill tank with a volume of 100ml, and the diameter of the stainless steel grinding balls added is 5mm, and the ball-to-material ratio is adjusted to be 1 : 1, adjust the rotating speed 100rpm of planetary ball mill, control the mixing temperature of grinding 40 ℃, the interval time of forward rotation and reverse rotation of ball mill is 15 minutes, the total ball milling time is 2h, separate ball mill tank and uniform powder material; 10mm is for the tableting mol...

Embodiment 3

[0027] Embodiment 3: the thickness is the precursor compact sheet of 4mm, with 1500 watts of microwave radiation power, make NaVO 2 Nanosphere electrode material

[0028] Accurately weigh 10.0000g of analytically pure V 2 o 5 Powder, the particle size of which is 200 mesh; at the same time, accurately weigh and analyze pure Na 2 CO 3 5.8275g of 5.8275g, its mesh number is 200 mesh; The above-mentioned two kinds of materials are fully mixed for 20min, and then this mixture is added into a stainless steel ball mill tank with a volume of 100ml, and the diameter of the stainless steel grinding balls added is 5mm, and the ball-to-material ratio is adjusted to be 1 : 1, adjust the rotating speed 100rpm of planetary ball mill, control the mixing temperature of grinding 50 ℃, the interval time of forward rotation and reverse rotation of ball mill is 15 minutes, the total ball milling time is 2h, separate ball mill tank and uniform powder material; 10mm is for the tableting mold to...

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