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Three-dimensional fold structure Ti3C2 Mxene as well as preparation method and application thereof

A technology of three-dimensional wrinkling and wrinkling, which is applied in the field of three-dimensional wrinkled structure Ti3C2 Mxene and its preparation and application, can solve the problems of poor conductivity and volume change, and achieve the effects of improving conductivity, increasing specific surface area, excellent rate performance and cycle performance

Pending Publication Date: 2022-07-05
NINGBO FENGCHENG ADVANCED ENERGY MATERIALS RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For 2H-MoS 2 For problems such as poor conductivity and volume change, we use 1T-MoS 2 Composite with conductive substrates, pre-treat MXene nanosheets to form a three-dimensional wrinkled structure to inhibit the stacking of MXene nanosheets, and design a 1T-MoS grown on three-dimensional wrinkled structure MXene 2 electrode, and use it as the negative electrode of lithium-ion batteries

Method used

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  • Three-dimensional fold structure Ti3C2 Mxene as well as preparation method and application thereof
  • Three-dimensional fold structure Ti3C2 Mxene as well as preparation method and application thereof
  • Three-dimensional fold structure Ti3C2 Mxene as well as preparation method and application thereof

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Embodiment 1

[0070] Stir and mix 1 g of lithium fluoride and a hydrochloric acid solution with a concentration of 6 mol / L-9 mol / L to obtain solution A, and mix 1 g of Ti 3 AlC 2 The powder was slowly added to solution A over a period of more than 10 minutes; at 35°C, slowly stirred at a speed of 200 rpm for 24 h to obtain solution B; solution B was washed with deionized water to a pH greater than 6, and the speed of each centrifugal washing was increased by Control the centrifugation at 3500rpm for 5 minutes, remove the supernatant to obtain a washed precipitate, repeat until the pH value of the supernatant is greater than 6, to obtain the washed lower precipitate, shake the precipitate vigorously by hand before each centrifugation For 1 min, the precipitate was added to 150 ml of deionized water, mixed evenly, and solution C was obtained; solution C was ultrasonicated for 60 min, and then centrifuged for 1 h at a speed of 3500 rpm, and the black upper layer solution was the obtained Ti 3...

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Abstract

The invention discloses Ti3C2Mxene with a three-dimensional fold structure as well as a preparation method and application of the Ti3C2Mxene. The preparation method comprises the following steps: (S1) obtaining dispersion liquid of the Ti3C2Mxene; and (S2) mixing a cationic surface active agent with the dispersion liquid of the Ti3C2MXene, and carrying out a reaction, so as to obtain the Ti3C2MXene with the three-dimensional fold structure. Aiming at the problems of poor conductivity, volume change and the like of 2H-MoS2, 1T-MoS2 is compounded with three-dimensional fold structure Ti3C2Mxene, so that the conductivity of the material is improved, and the stacking and agglomeration of the material are inhibited.

Description

technical field [0001] The present application relates to a three-dimensional wrinkled structure Ti 3 C 2 Mxene and its preparation method and application belong to the field of composite materials. Background technique [0002] Lithium-ion batteries have been widely used due to their high energy density and power density, but with the rapid development of science and technology, people's demand for energy is also increasing rapidly. The current commercial carbon-based anodes are increasingly unable to meet the demand for high energy density in the future. Therefore, it is urgent to develop and design a high-cycle anode material to improve the lithium storage capacity of batteries. [0003] In recent years, transition metal chalcogenides have attracted the attention of researchers due to their high theoretical specific capacity. Molybdenum disulfide (MoS 2 ), as a typical transition metal chalcogenide, benefits from a two-dimensional layered structure and possesses many...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/62
CPCH01M4/5815H01M4/58H01M4/624H01M4/36
Inventor 刘志敏吴志连俞波
Owner NINGBO FENGCHENG ADVANCED ENERGY MATERIALS RES INST CO LTD
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