Homogeneous C and N co-doped phosphate material as well as preparation method and application thereof

A phosphate and co-doping technology, applied in chemical instruments and methods, phosphorus compounds, hybrid/electric double layer capacitor manufacturing, etc., can solve the problems of large mass transfer resistance, high overpotential, etc., and achieve small size and high conductivity High and simple preparation method

Active Publication Date: 2021-12-10
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As an efficient supercapacitor cathode material, transition metal phosphates have the potential to efficiently catalyze oxygen generation, but pristine phosphates usually have high overpotential and large mass transfer resistance

Method used

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  • Homogeneous C and N co-doped phosphate material as well as preparation method and application thereof
  • Homogeneous C and N co-doped phosphate material as well as preparation method and application thereof
  • Homogeneous C and N co-doped phosphate material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～10

[0030] The main raw materials used in Examples 1 to 10 of the present invention and their consumption and reaction conditions are shown in Table 1 below:

[0031] Table 1

[0032]

[0033] A kind of homogeneous C of embodiment 1~10 of the present invention, the preparation method of N co-doped phosphate material comprises the following steps:

[0034] According to the ratio and reaction conditions shown in Table 1, after mixing the cobalt source, phosphoric acid, and solvent, adding an organic amine to obtain a gel, the gel is transferred to a high-pressure tube for reaction, and the obtained product is washed with water or ethanol at least three times, and dried After drying, the 2D phosphates of Examples 1-10 were obtained, denoted as CxNCPO.

[0035] It should be noted that x in CxNCPO is 3, 4 or 6; when x is 3, it shows that the prepared 2D phosphate (C3NCPO) is a 2D structure with 1,3-propanediamine intercalated between layers; When x is 4, it shows that the prepared...

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Abstract

The invention discloses a homogeneous C and N co-doped phosphate material as well as a preparation method and application thereof, and belongs to the technical field of electrochemical catalysts. The invention provides a method for preparing a heteroatom-doped material with universality under a low-temperature environment-friendly condition by utilizing a host-guest template method, which specifically comprises the following steps: inserting organic amine serving as a template in the middle of an inorganic layer to quickly prepare a 2D phosphate material on a large scale, and then conducting annealing to obtain a homogeneous C and N co-doped phosphate material. The homogeneous C and N co-doped phosphate material disclosed by the invention has excellent electro-catalytic performance and supercapacitor performance, and can be applied to new energy conversion materials such as electrode materials in metal-air batteries, fuel-cell water-system batteries and the like, and electrochemical energy storage devices such as supercapacitors and the like.

Description

technical field [0001] The invention belongs to the technical field of electrochemical catalysts, and in particular relates to a homogeneous C, N co-doped phosphate material and its preparation method and application. Background technique [0002] Supercapacitors are another type of electrochemical energy storage devices that have the characteristics of high energy density and good cycle stability. So far, the electrode materials used as supercapacitors mainly include transition metal oxides, transition metal oxo-salts, carbon-based materials, etc. As an anode material for supercapacitors, it is necessary to achieve large charge capacity and charge transfer capability, so that it has good specific capacitance at different current densities (especially at high current densities); in addition, two-dimensional materials have large contact Area and surface unsaturation of active sites that can be in contact with the electrolyte (e.g. generation of vacancies), thereby further en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/37H01G11/86
CPCC01B25/37H01G11/86C01P2002/72C01P2004/03C01P2006/40Y02E60/13
Inventor 宋俊玲郭正瀚李金昆黄赛
Owner JIANGNAN UNIV
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