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A kind of nano flake bioi and its application as electrode material

A technology of nanosheets and electrode materials, applied in the field of chemistry, can solve the problem that no one has reported the electrochemical performance of BiOI electrode materials.

Active Publication Date: 2021-02-09
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] So far, no one has reported the electrochemical performance of BiOI as an electrode material.

Method used

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  • A kind of nano flake bioi and its application as electrode material
  • A kind of nano flake bioi and its application as electrode material
  • A kind of nano flake bioi and its application as electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Nano flake BiOI

[0019] A nano-flaky BiOI is prepared by the following method: first, add bismuth nitrate and potassium iodide to ethylene glycol, stir for 1 h, add 1.3 mmol bismuth nitrate and 8 mmol potassium iodide per 20 mL of ethylene glycol; then, transfer the solution Put it into the polytetrafluoroethylene lining for hydrothermal reaction, and react at a constant temperature of 170 ° C for 6 hours; finally, take it out to cool, centrifuge, wash, and dry to obtain nano-flaky BiOI.

[0020] figure 1 is the scanning electron microscope (SEM) image of the prepared BiOI, by figure 1 It can be seen that the BiOI prepared by this method is a relatively regular nano-sheet structure.

[0021] figure 2 X-ray diffraction (XRD) figure of the prepared BiOI, by figure 2 It can be seen that the BiOI prepared by this method is a pure BiOI crystal, and the standard card is JCPDS:73-2062.

Embodiment 2

[0022] Example 2: Nano flake BiOI

[0023] A nano-flaky BiOI is prepared by the following method: first, add bismuth nitrate and potassium iodide to ethylene glycol, stir for 0.5h, add 1.2mmol bismuth nitrate and 7.5mmol potassium iodide per 20mL of ethylene glycol; then, the The solution was transferred to a polytetrafluoroethylene liner for hydrothermal reaction at a constant temperature of 160°C for 6.5 hours; finally, it was taken out to cool, centrifuged, washed, and dried to obtain nano-flaky BiOI. The BiOI prepared in this example has the same morphology as the BiOI obtained in Example 1.

Embodiment 3

[0024] Example 3: Nano flake BiOI

[0025] A nano-flaky BiOI is prepared by the following method: first, add bismuth nitrate and potassium iodide to ethylene glycol, stir for 1.5h, add 1.4mmol bismuth nitrate and 8.5mmol potassium iodide per 20mL of ethylene glycol; then, the The solution was transferred to a polytetrafluoroethylene lining for hydrothermal reaction at a constant temperature of 180°C for 5.5 hours; finally, it was taken out to cool, centrifuged, washed, and dried to obtain nano-flaky BiOI. The BiOI prepared in this example has the same morphology as the BiOI obtained in Example 1.

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PUM

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Abstract

The invention discloses a nano-flaky BiOI and its use as an electrode material. The nano-flaky BiOI is prepared by the following method: first, take bismuth nitrate and potassium iodide and add them to ethylene glycol, stir for 0.5-1.5 hours, and Add 1.2-1.4 mmol of bismuth nitrate and 7.5-8.5 mmol of potassium iodide to 20 mL of ethylene glycol; then, transfer the solution to a polytetrafluoroethylene lining for hydrothermal reaction, and react at a constant temperature of 160-180 °C for 5.5-6.5 hours; finally, Take out and cool, centrifuge, wash, and dry to obtain nano-flaky BiOI. The nano flake BiOI provided by the invention has a specific capacitance of 3991mF / g at a current density of 31.25mA / g, which is high in specific capacitance and can be used as an electrode material.

Description

technical field [0001] The invention belongs to the field of chemistry, and relates to a nano flake BiOI and its use as an electrode material. Background technique [0002] In the 21st century, large-scale power storage is one of the key issues in the development of new energy technologies. Whether it is the efficient use of renewable new energy (such as photovoltaic and wind power), or the future clean transportation based on electric vehicles, cheap and efficient large-scale power storage is required as technical support. Among the existing large-scale energy storage methods, secondary battery technology has attracted widespread attention due to its simplicity and high efficiency, and has become the mainstream direction of application development in recent years. However, almost all existing secondary battery systems are difficult to meet the application requirements of large-scale power storage. Traditional lead-acid and nickel-cadmium batteries contain a large amount o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G29/00H01M4/58B82Y30/00
CPCB82Y30/00C01G29/00C01P2002/72C01P2004/03C01P2004/20C01P2006/40C01P2006/80H01M4/582Y02E60/10
Inventor 滕飞杨立业路露张桉杨晋宇滕怡然刘再论
Owner NANJING UNIV OF INFORMATION SCI & TECH
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