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Preparation method and preparation container of boron alkene and graphene composite aerogel electrode plate

A graphene composite and aerogel technology, which is applied in the field of lithium-ion batteries, can solve problems such as restricting the application of boronene and structural instability, and achieve the effects of large specific capacity, high rate charge and discharge performance, and excellent conductivity

Pending Publication Date: 2022-05-17
TSINGHUA UNIV
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Problems solved by technology

[0004] The invention provides a preparation method and a preparation container of a boronene and graphene composite airgel electrode sheet, which are used to solve the problem that the boronene structure in the prior art is mostly in a metallic state and the boronene structure detached from the metal substrate is unstable and extremely large. Restricted the defects of boronene in the negative electrode of lithium-ion batteries, prepared boronene / graphene composite airgel, applied to the negative electrode of lithium-ion batteries, and realized the large-scale application of boronene

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  • Preparation method and preparation container of boron alkene and graphene composite aerogel electrode plate
  • Preparation method and preparation container of boron alkene and graphene composite aerogel electrode plate

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preparation example Construction

[0055] Such as figure 1Shown, the preparation method of a kind of boronene and graphene composite airgel electrode sheet provided by the invention comprises:

[0056] Step 100: preparing boronene powder;

[0057] Step 200: Using boronene powder and graphene oxide solution to prepare a boronene and graphene composite airgel electrode sheet.

[0058] Through the preparation method of boronene and graphene composite airgel electrode sheets, the problem of structural instability of boronene after losing the support of the metal substrate is solved and its properties are fully utilized to combine boronene and graphene to form a heterojunction. A heterojunction airgel electrode sheet of boron and graphene was produced and applied to the negative electrode of a lithium-ion battery; the prepared airgel electrode sheet has excellent conductivity, does not require an additional collector in the battery, and The synthesized boronene and graphene airgel electrode sheet has a large speci...

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Abstract

The invention provides a preparation method and a preparation container of a boron alkene and graphene composite aerogel electrode plate. The preparation method comprises the following steps: preparing boron alkene powder; and preparing the boron alkene and graphene composite aerogel electrode plate by using the boron alkene powder and the graphene oxide solution. The problem of structure instability after boron alkene loses metal substrate support is solved, the properties of boron alkene are fully utilized, boron alkene and graphene are combined to form a heterojunction, and the boron alkene / graphene heterojunction aerogel electrode plate is prepared and applied to a lithium ion battery negative electrode. The prepared aerogel electrode plate has excellent conductivity, an additional collector electrode is not needed in a battery, and the synthesized boron-alkene / graphene aerogel electrode plate has large specific capacity which is improved by 39% compared with a graphene skeleton without addition of boron-alkene. And meanwhile, the aerogel electrode plate is relatively good in high-rate charge-discharge performance.

Description

technical field [0001] The invention relates to the technical field of lithium ion batteries, in particular to a preparation method and a preparation container of a boronene and graphene composite airgel electrode sheet. Background technique [0002] Lithium-ion battery is a typical energy storage device that can convert chemical energy and electrical energy. It has attracted much attention because of its high operating voltage and low weight. The achievable energy density is much higher than other battery technologies. The current graphite anode material The performance is gradually approaching the theoretical value, and the industrialization of new negative electrode materials is ready to go. One of the future development directions of lithium-ion batteries is to improve the performance of negative electrode materials. Due to its unique structure and electronic properties, boronene has become the latest very promising two-dimensional material. Due to the small atomic mass ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/38H01M4/139H01M4/62H01M10/0525C01B35/02C01B32/194C01B32/19B82Y40/00B82Y30/00
CPCH01M4/139H01M4/38H01M4/625H01M10/0525C01B35/023C01B32/194C01B32/19B82Y30/00B82Y40/00
Inventor 周明俞剑文杨名扬张毅博徐本燕徐夕媚李旭胤陶浩楠
Owner TSINGHUA UNIV
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