Synthetic method of porous black phosphorus nanosheet for negative electrode material of ion battery

A negative electrode material and ion battery technology, applied in battery electrodes, negative electrodes, nanotechnology, etc., can solve problems such as harsh synthesis conditions, complex two-dimensional black phosphorus nanosheets, and complex construction methods of porous black phosphorus nanosheets

Active Publication Date: 2021-09-03
HARBIN ENG UNIV +1
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  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problems that the synthesis conditions of existing black phosphorus materials are harsh, two-dimensional black phosphorus nanosheets need complex ultrasonic stripping, and the construction method of porous black phosphorus nanosheets is complicated, and the pore size is too large, and further provides a method for ionic Synthesis method of porous black phosphorus nanosheets for battery anode materials

Method used

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  • Synthetic method of porous black phosphorus nanosheet for negative electrode material of ion battery
  • Synthetic method of porous black phosphorus nanosheet for negative electrode material of ion battery
  • Synthetic method of porous black phosphorus nanosheet for negative electrode material of ion battery

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specific Embodiment approach 1

[0022] DETAILED DESCRIPTION a: Porous black phosphorus present embodiment nanosheet method of synthesis for battery anode material, it is carried out the following steps:

[0023] First, the phosphorus, anhydrous chloride and sodium sodium sodium were added to the stainless steel ball mill, and the ball mill was 30 min to 100 min to obtain a ball mill mixture;

[0024] The molar ratio of the metal sodium and phosphorus (2 to 4): 1; the molar ratio of the anhydrous chloride and phosphorus phosphorus is 1: (5 ~ 20);

[0025] Second, the ball mill mixture is added to ethanol, soaked for 10 min to 30 min, then placed in dilute hydrochloric acid, soaked for 10 min to 30 min, finally used deionized water, obtained the product after cleaning, and the product was separated, and finally vacuum Dry, give a porous black phosphorus nanofile.

[0026] Advantageous Effects of the present embodiment is:

[0027] Conventional synthetic methods black phosphorus is red phosphorus as a starting mate...

specific Embodiment approach 2

[0030] DETAILED Embodiment 2: This embodiment and the exemplary first embodiment except that: a step a in the milling speed was 100rpm / min ~ 300rpm / min and the ball to powder ratio (5 ~ 10): under condition 1, milling 30min ~ 100min. Other specific embodiments the same as a.

specific Embodiment approach 3

[0031] DETAILED Embodiment 3: Embodiment of the present embodiment and the exemplary embodiment a one or two exceptions: the concentration of dilute hydrochloric acid in the procedure of 0.5mol / L ~ 2mol / L. Other specific embodiments of the same one or two.

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Abstract

The invention discloses a synthesis method of a porous black phosphorus nanosheet for an ion battery negative electrode material, and belongs to the technical field of synthesis of nano materials. The invention aims to solve the problems that the synthesis conditions of the existing black phosphorus material are harsh, the two-dimensional black phosphorus nanosheet needs complex ultrasonic stripping, the construction method of the porous black phosphorus nanosheet is complex, and the pore diameter is too large. The preparation method comprises the following steps: 1, carrying out ball milling on phosphorus trichloride, anhydrous zinc chloride and metal sodium to obtain a ball-milled mixture; 2, carrying out cleaning, centrifugal separation and vacuum drying on the ball-milled mixture to obtain the porous black phosphorus nanosheet. The method is used for synthesizing the porous black phosphorus nanosheet of the negative electrode material of the ion battery.

Description

Technical field [0001] The present invention belongs to the technical field of nanomaterial synthesis. Background technique [0002] Black phosphorus is a layered crystal material, and has good electronic conductivity, the electrode material is excellent. While the high-capacity lithium phosphorus is one of sodium ion battery negative electrode material, the theoretical capacity of up to 2596mAh / g. [0003] But now the synthesis of black phosphorus is still very difficult. Preparation of starting material is commonly used red phosphorus, usually require very high speed or high pressure treatment, and time than the golf ball material to synthesize black phosphorus product. After synthesis of black phosphorus, it requires complex ultrasonic stripping solvent, to prepare a two-dimensional black phosphorus nanosheet. And the method further ultrasonic stripping process such that black phosphorus nanosheet severe surface oxidation. Further, the porous nanosheet black phosphorus struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/02H01M4/38B82Y40/00
CPCC01B25/02H01M4/38B82Y40/00H01M2004/027Y02E60/10
Inventor 刘志亮陈雷杨飘萍赵颖王思皓王庭禹丁鹤贺飞
Owner HARBIN ENG UNIV
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