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Molybdenum ditelluride electrochemical energy storage material, preparation method and application thereof

A technology of molybdenum ditelluride and energy storage materials, which is applied in the directions of binary selenium/tellurium compounds, metal selenides/tellurides, etc. performance and electrochemical stability, and the effect of expanding application fields

Inactive Publication Date: 2019-03-01
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides the synthesis and application of a molybdenum ditelluride electrochemical energy storage material, which solves the problem that there is currently no application of molybdenum ditelluride supercapacitor materials

Method used

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  • Molybdenum ditelluride electrochemical energy storage material, preparation method and application thereof
  • Molybdenum ditelluride electrochemical energy storage material, preparation method and application thereof
  • Molybdenum ditelluride electrochemical energy storage material, preparation method and application thereof

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Embodiment 1

[0039] Preparation of molybdenum ditelluride nanoflower structure electrochemical energy storage materials

[0040] (1) Preparation of 1 mol / L Te-TOP precursor: 638 mg (0.5 mmol) metallic tellurium was added to a round-bottomed flask containing 5 ml trioctylphosphine, stirred and dissolved at 100 °C for 5 h to obtain Te -TOP precursor.

[0041] (2) Add 66 mg (0.25 mmol) molybdenum hexacarbonyl and 15 ml oleylamine to a 100 mL three-neck round bottom flask, heat up to 80 °C under stirring, degas under vacuum for 30 min, and inject the Te- TOP precursor 0.5 mL, then, under the protection of argon at 5 ℃ min -1 The heating rate was increased to 320 °C, and the reaction was carried out for 2 h. Cool to room temperature after the reaction, add toluene and absolute ethanol with a volume ratio of 1:1 to wash three times, and finally disperse in ethanol to obtain molybdenum ditelluride nanoflowers assembled by ultrathin nanosheets.

[0042] Picture 1-1 This is the TEM picture of t...

Embodiment 2

[0049] Preparation of molybdenum ditelluride nanosphere structure electrochemical energy storage materials

[0050] (1) Preparation of 1 mol / L Te-TOP precursor: 638 mg (0.5 mmol) metallic tellurium was added to a round-bottomed flask containing 5 mL trioctylphosphine, stirred and dissolved at 100 °C for 5 h to obtain Te -TOP precursor.

[0051] (2) Add 68 mg (0.25 mmol) molybdenum pentachloride and 15 mL oleylamine to a 100 mL three-neck round bottom flask, heat up to 80 °C under stirring, degas under vacuum for 30 min, and inject the Te synthesized above under an argon atmosphere. -TOP precursor 0.5 mL, then, under the protection of argon at 5 ℃ min -1 The heating rate was increased to 320 °C, and the reaction was carried out for 2 h. Cool to room temperature after the reaction, add toluene and absolute ethanol at a volume ratio of 1:1 to wash three times, and finally disperse in ethanol to obtain molybdenum ditelluride nanospheres assembled by ultrathin nanosheets.

[005...

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Abstract

The invention provides a molybdenum ditelluride electrochemical energy storage material, the material is metastable molybdenum ditelluride, and its expression is 1T'-MoTe 2 , the morphology is a nanoflower structure or a nanosphere structure assembled by ultrathin nanosheets. The invention also provides a preparation method and application of the material, using oleylamine as the reducing agent, molybdenum hexacarbonyl or molybdenum pentachloride as the precursor of molybdenum, injecting the tellurium-trioctylphosphine precursor at a certain temperature, and controlling the reaction temperature and reaction time, thereby preparing a metastable hexagonal phase molybdenum ditelluride nanoflower structure or nano spherical structure with uniform size and regular shape. This type of material exhibits excellent supercapacitor energy storage performance and is suitable for the field of new energy development.

Description

technical field [0001] The invention belongs to the technical field of new energy nanomaterial synthesis and electrochemistry, and specifically relates to a molybdenum ditelluride electrochemical energy storage material, a preparation method and an application thereof. Background technique [0002] Energy is an important material basis for the existence and development of human society. With the development of society, energy crisis and environmental pollution are prominent problems facing the world in the 21st century and have become the main problems hindering economic and social development. Energy issues have become the focus of various countries to be resolved urgently, and more and more countries are turning their attention to efficient and environmentally friendly new energy fields. As a new type of energy storage equipment, supercapacitors have attracted extensive attention from researchers. It has the advantages of high power density, short charging time, high cycle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B19/04
CPCC01B19/007C01P2002/72C01P2002/85C01P2004/04C01P2004/50C01P2004/62C01P2006/40
Inventor 安长华刘明王兆杰张军刘俊学李彦鹏
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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