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Nitrogen doped carbon nanosphere/molybdenum disulfide sodium-ion battery cathode plate

A sodium ion battery, molybdenum disulfide technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of unsatisfactory rate performance, poor conductivity, weak interlayer force, etc., to achieve the benefits of commercial production and application, improved cycle stability, the effect of a good conductive network

Inactive Publication Date: 2017-07-25
QINGDAO HAICHENG INTPROP SERVICES CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Two-dimensional transition metal sulfide has the characteristics of low cost and high theoretical specific capacity, and has become a research hotspot of anode materials for sodium batteries; Reversible electrochemical deintercalation; among them, molybdenum disulfide is a typical two-dimensional transition metal sulfide, which has the advantage of high theoretical capacity, but its poor conductivity leads to unsatisfactory rate performance

Method used

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  • Nitrogen doped carbon nanosphere/molybdenum disulfide sodium-ion battery cathode plate
  • Nitrogen doped carbon nanosphere/molybdenum disulfide sodium-ion battery cathode plate
  • Nitrogen doped carbon nanosphere/molybdenum disulfide sodium-ion battery cathode plate

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Embodiment 1

[0023] The main raw material parts by weight of the nitrogen-doped carbon nanosphere / molybdenum disulfide sodium ion battery negative plate involved in this embodiment are: 1-5 parts of natural melanin, 1-20 parts of sodium molybdate, and 8-40 parts of thioacetamide , 5-20 parts of conductive carbon black, 0.001-0.1 parts of PVDF (polyvinylidene fluoride), 1-2 parts of NMP (N-methylpyrrolidone), 20-200 parts of copper foil; the natural melanin is taken from the cuttlefish sac, The rest are commercially available products.

[0024] This embodiment also relates to the preparation process of nitrogen-doped carbon nanosphere / molybdenum disulfide sodium ion battery negative electrode sheet, specifically including:

[0025] (1) Break open the selected cuttlefish sac and take out the black liquid from it, then add it to ultrapure water for centrifugation and washing for 2-10 times, then put the centrifuged melanin into a dialysis bag for dialysis purification, and then purify The fi...

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Abstract

The invention belongs to the technical field of battery production, relates to a sodium-ion battery cathode plate, and particularly relates to a nitrogen doped carbon nanosphere / molybdenum disulfide sodium-ion battery cathode plate. Natural-melanin nanospheres are wrapped with a layer of graphene-like transition metal molybdenum disulfide to prepare a nitrogen doped carbon sphere / molybdenum disulfide material, and the nitrogen doped carbon sphere / molybdenum disulfide material is used to prepare a battery. The nitrogen doped carbon nanosphere / molybdenum disulfide sodium-ion battery cathode plate has the advantages that melanin is extracted from natural squid ink, the melanin is wrapped with the molybdenum disulfide through a hydrothermal method, the melanin becomes nitrogen doped carbon spheres during the hydrothermal process due to the fact that the main component of the melanin is polydopamine, molybdenum disulfide nanosheets evenly wrap the carbon nanospheres, and a good conductive load network is formed among the nanosheets; the prepared CS / MoS2 material is used as the cathode material of a sodium-ion battery, cathode structure and interface stability are increased, cathode circulation stability is improved, and commercial production and application are benefited.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of battery preparation, and relates to a negative electrode sheet of a sodium ion battery, in particular to a negative electrode sheet of a nitrogen-doped carbon nanosphere / molybdenum disulfide sodium ion battery. Nitrogen-doped carbon spheres / molybdenum disulfide (MoS 2 )(carbon spheres,CS)(CS / MoS 2 ) materials, and prepared into batteries. [0003] Background technique: [0004] Sodium-ion batteries have been considered as an ideal substitute for lithium-ion batteries due to their abundant sources, simple preparation process, no pollution, low price, and wide distribution in nature. At present, the anode materials for sodium-ion batteries that have been studied more are mainly various carbon-based materials, such as graphite, mesocarbon microspheres, hard carbon, etc. The electrochemical properties of carbon-based materials are closely related to their structures. At the same time, metal-based mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/62H01M4/136H01M4/1397H01M10/054
CPCH01M4/136H01M4/1397H01M4/362H01M4/5815H01M4/62H01M4/625H01M10/054Y02E60/10
Inventor 石云鹏马文静蔡冬迟庆东
Owner QINGDAO HAICHENG INTPROP SERVICES CO LTD
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