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Preparation method and application of cobalt nickel phosphorus sulfide heterostructure nanosheet

A technology of cobalt-nickel phosphide and heterostructure is applied in the preparation field of cobalt-nickel phosphide, which can solve the problems of reduced synergy between phosphorus and sulfur, low capacitance performance, low phosphorus and sulfur elements, etc., and achieves low cost and simple method. , the effect of large specific surface area

Inactive Publication Date: 2022-03-01
HEILONGJIANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the relatively low phosphorus and sulfur elements in the phosphorus and sulfur-containing materials synthesized by the existing method, and the synergistic effect between phosphorus and sulfur substances will also decrease, and the problem of low capacitance performance when used as electrode materials, And provide a kind of preparation method and application of cobalt nickel sulfide heterostructure nanosheet

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  • Preparation method and application of cobalt nickel phosphorus sulfide heterostructure nanosheet
  • Preparation method and application of cobalt nickel phosphorus sulfide heterostructure nanosheet
  • Preparation method and application of cobalt nickel phosphorus sulfide heterostructure nanosheet

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specific Embodiment approach 1

[0029] Specific embodiment 1: In this embodiment, a method for preparing cobalt-nickel sulfide heterostructure nanosheets is completed according to the following steps:

[0030] 1. Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 O is dissolved in polyethylene glycol 200, and the reaction is stirred to obtain the reaction solution I;

[0031] 2. Sodium acetate was dissolved in polyethylene glycol 200, and then stirred for reaction to obtain reaction solution II;

[0032] 3. Dissolving thiourea into polyethylene glycol 200, ultrasonically dispersing, and then stirring to react to obtain reaction liquid III;

[0033] 4. Mix the reaction solution I, the reaction solution II and the reaction solution III, and then stir the reaction to obtain a mixed solution; transfer the mixed solution to a high-pressure reactor, and perform a hydrothermal reaction at 180°C to 220°C to obtain a reaction solution IV;

[0034] The volume ratio of reaction solution I, reaction solution II and reacti...

specific Embodiment approach 2

[0037] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the Ni(NO 3 ) 2 ·6H 2 O and Co(NO 3 ) 2 ·6H 2 The molar ratio of O is (10~30):(10~30); Ni(NO 3 ) 2 ·6H 2 The volume ratio of the amount of O to polyethylene glycol 200 is (10mmol-30mmol):(10mL-30mL). Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0038] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the stirring reaction speed described in step 1 is 60r / min-120r / min, and the stirring reaction time is 20min-40min.

[0039] Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method and application of a phosphorus cobalt nickel sulfide heterostructure nanosheet, and relates to a preparation method of phosphorus cobalt nickel sulfide. The invention aims to solve the problems that phosphorus and sulfur elements in a phosphorus and sulfur-containing material synthesized by the existing method are relatively low, the synergistic effect between phosphorus and sulfur substances is reduced, and the capacitive performance is low when the material is used as an electrode material. The method comprises the following steps: 1, preparing reaction liquid I; 2, preparing a reaction liquid II; 3, preparing a reaction solution III; 4, carrying out hydrothermal reaction; 5, centrifuging and cleaning; and 6, phosphating treatment. The phosphorus sulfide cobalt nickel heterostructure nanosheet is used as an electrode material. The phosphorus sulfide cobalt nickel heterostructure nanosheet prepared by the invention is a potential candidate of a supercapacitor positive electrode material, and has a wide application prospect. According to the preparation method, the nickel cobalt phosphorus sulfide heterostructure nanosheet can be obtained.

Description

technical field [0001] The invention relates to a preparation method of cobalt nickel sulfide. Background technique [0002] The development of new energy technologies and the realization of the utilization and transformation of new energy are one of the key issues of scientific research today. The core issue is the design and research of new materials. The type and microstructure of materials determine the performance of energy storage devices. Transition metal sulfides (TMS) are pseudocapacitive electrode materials with better electrochemical activity than their oxide counterparts. Moreover, nickel and cobalt ions in bimetallic sulfides can provide more abundant redox reactions than single-component sulfides (nickel sulfide, cobalt sulfide), resulting in higher specific capacitance. Transition metal phosphides, due to their unique physical and chemical properties, such as higher electrical conductivity, rich chemical valence states, stand out as promising candidates for e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/08C01G53/00H01G11/24H01G11/30B82Y30/00B82Y40/00
CPCC01B25/088C01G53/006H01G11/24H01G11/30B82Y30/00B82Y40/00C01P2002/72C01P2004/04C01P2004/03C01P2002/78C01P2006/12C01P2006/14C01P2006/40C01P2004/20Y02E60/13
Inventor 张晓萌李兆清布和巴特尔焦艳清闫海静马天慧
Owner HEILONGJIANG INST OF TECH
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