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A zns nanowire/cu 7 the s 4 Nanoparticle/reduced graphene oxide composite material and its preparation method and application

A nanoparticle and composite material technology, which is applied in the field of composite materials with both supercapacitor and photocatalytic applications, can solve the problem of low stability of composite materials, and achieve the effect of clear steps and simple operation

Active Publication Date: 2021-09-03
JILIN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] To solve ZnS and Cu 7 S 4 The problem of low stability of the composite material, the present invention introduces two-dimensional graphene in the nanocomposite material, uses graphene as the substrate of the nanocomposite material, it can not only avoid ZnS / Cu 7 S 4 The volume change during charge and discharge also provides a large electrode / electrolyte interface to facilitate better ion diffusion

Method used

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  • A zns nanowire/cu <sub>7</sub> the s <sub>4</sub> Nanoparticle/reduced graphene oxide composite material and its preparation method and application
  • A zns nanowire/cu <sub>7</sub> the s <sub>4</sub> Nanoparticle/reduced graphene oxide composite material and its preparation method and application
  • A zns nanowire/cu <sub>7</sub> the s <sub>4</sub> Nanoparticle/reduced graphene oxide composite material and its preparation method and application

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Embodiment Construction

[0018] The raw materials used in this embodiment are as follows:

[0019] Zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O, Sinopharm Chemical Reagent Co., Ltd.) is analytically pure;

[0020] Copper nitrate (Cu(NO 3 ) 2 ·3H 2 O, Sinopharm Chemical Reagent Co., Ltd.) is analytically pure;

[0021] Thiourea (H 2 NCSNH 2 , Sinopharm Chemical Reagent Co., Ltd.) was analytically pure;

[0022] Ethylenediamine (H 2 NCH 2 CH 2 NH 2 , Sinopharm Chemical Reagent Co., Ltd.) was analytically pure;

[0023] Potassium peroxodisulfate (K 2 S 2 o 8 , Sinopharm Chemical Reagent Co., Ltd.) was analytically pure;

[0024] Phosphorus pentoxide (P 2 o 5 Xilong Chemical Co., Ltd.) is analytically pure;

[0025] Graphite powder (C, Aladdin's reagent) is analytically pure;

[0026] Sulfuric acid (H 2 SO 4 95%-98%, Beijing Chemical Plant) is analytically pure;

[0027] Phosphoric acid (H 3 PO 4 , Beijing Chemical Plant) is analytically pure;

[0028] Potassium permanganate (KMnO 4 , Be...

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Abstract

The invention discloses a ZnS nanowire / Cu 7 S 4 A nanoparticle / reduced graphene oxide composite material and a preparation method thereof belong to the field of multifunctional composite materials, and are a composite material with both supercapacitor and photocatalytic applications. Currently ZnS and Cu 7 S 4 Although the composed composite material can have both supercapacitor and photocatalytic applications, the material has the problem of low stability. The present invention introduces two-dimensional graphene into the nanocomposite material, uses graphene as the substrate of the nanocomposite material, it can not only avoid ZnS / Cu 7 S 4 The volume change during charge and discharge can also provide a large electrode / electrolyte interface to facilitate better ion diffusion. At the same time, ZnS / Cu 7 S 4 It can also prevent the aggregation of graphene and increase its surface area, making the material have good electrical properties and photocatalytic properties at the same time.

Description

technical field [0001] The invention belongs to the field of multifunctional composite materials, in particular to a composite material with both supercapacitor and photocatalytic applications. Background technique [0002] Supercapacitors (SCs) have attracted extensive attention due to their high power density, long lifetime, and low cost. Its properties mainly depend on the electrochemical properties of the electrode material. Carbon-based nanomaterials (graphene, carbon nanotubes, etc.) have high specific surface area and high conductivity, but their capacitance mainly comes from electrostatic charge adsorption, so the energy density and power density are low. Transition metal oxides / sulfides or their composites are based on fast and reversible faradaic reactions (redox reactions) for charge storage on the electrode surface, thus possessing high specific capacitance and energy density. Compared with metal oxides, transition metal sulfides have lower cost, richer redox v...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/30H01G11/32H01G11/86
CPCH01G11/30H01G11/32H01G11/86Y02E60/13
Inventor 曹健冯博李盺
Owner JILIN NORMAL UNIV