(FeCuZn) F3/rGO composite porous nanomaterial and lithium-fluorine battery

A nanomaterial, lithium-fluorine battery technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as poor electrical conductivity and affect applications, and achieve good rate performance, effective charge transfer, and superior cycle stability.

Pending Publication Date: 2022-06-07
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But FeF 3 The disadvantage is also obvious, poor conductivity, which affects its application

Method used

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  • (FeCuZn) F3/rGO composite porous nanomaterial and lithium-fluorine battery
  • (FeCuZn) F3/rGO composite porous nanomaterial and lithium-fluorine battery
  • (FeCuZn) F3/rGO composite porous nanomaterial and lithium-fluorine battery

Examples

Experimental program
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Effect test

Embodiment 1

[0043] (1) Weigh 20 mg of graphene, add it to 40 ml of ethanol solution, and ultrasonically react for 2 h to make it completely dispersed to obtain a pretreated graphene ethanol dispersion.

[0044] (2) 1350mg Fe(NO 3 ) 3 ·9H 2 O, 45 mg of Cu(CO 3 ) 2 ·3H 2 O, 56 mg of Zn(NO 3 ) 2 ·6H 2 O is dissolved in the graphene ethanol dispersion liquid obtained in step 1), after stirring for 10min, gradually drip the BmimBF of 15ml 4 The ionic liquid (excess of fluoride ions) was stirred at room temperature for 30 min to make it evenly mixed.

[0045] (3) The mixed solution obtained in step 2) was transferred to the reaction kettle, and the mixed solution was cooled to room temperature at a reaction temperature of 120° C. and a reaction time of 14 hours in a vacuum oven using a solvothermal method.

[0046] (4) The precipitated product obtained in 3) was centrifuged, the solid was collected, washed with ethanol for 3 to 5 times, transferred to a vacuum oven, and dried at 80° C....

Embodiment 2

[0049] (1) Weigh 20 mg of graphene, add it to 40 ml of ethanol solution, and ultrasonically react for 2 h to make it completely dispersed to obtain a pretreated graphene ethanol dispersion.

[0050] (2) 1350mg Fe(NO 3 ) 3 ·9H 2 O, 27 mg of Cu(CO 3 ) 2 ·3H 2 O, 78 mg of Zn(NO 3 ) 2 ·6H 2 O, be dissolved in the graphene ethanol dispersion liquid obtained in step 1), after stirring 10min, gradually drip the BmimBF of 15ml 4 The ionic liquid (excess of fluoride ions) was stirred at room temperature for 30 min to make it evenly mixed.

[0051] (3) The mixed solution obtained in step 2) was transferred to the reaction kettle, and the mixed solution was cooled to room temperature at a reaction temperature of 110° C. and a reaction time of 16 h in a vacuum oven using a solvothermal method.

[0052] (4) The precipitated product obtained in 3) was centrifuged, the solid was collected, washed with ethanol for 3 to 5 times, transferred to a vacuum oven, and dried at 80° C. for 12...

Embodiment 3

[0055] (1) Weigh 20 mg of graphene, add it to 40 ml of ethanol solution, and ultrasonically react for 2 h to make it completely dispersed to obtain a pretreated graphene ethanol dispersion.

[0056] (2) 1350mg Fe(NO 3 ) 3 ·9H 2 O, 63 mg of Cu(CO 3 ) 2 ·3H 2 O, 34 mg of Zn(NO 3 ) 2 ·6H 2 O is dissolved in the graphene ethanol dispersion liquid obtained in step 1), after stirring for 10min, gradually drip the BmimBF of 15ml 4 The ionic liquid (excess of fluoride ions) was stirred at room temperature for 30 min to make it evenly mixed.

[0057] (3) The mixed solution obtained in step 2) was transferred to the reaction kettle, and the mixed solution was cooled to room temperature at a reaction temperature of 150 °C and a reaction time of 12 h in a vacuum oven using a solvothermal method.

[0058] (4) The precipitated product obtained in 3) was centrifuged, the solid was collected, washed with ethanol for 3 to 5 times, transferred to a vacuum oven, and dried at 80° C. for ...

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Abstract

The invention discloses a (FeCuZn) F3 / rGO nano material with a porous nano structure as well as a preparation method and application of the (FeCuZn) F3 / rGO nano material. The preparation method comprises the following steps: taking fluorine-containing ionic liquid as a fluorine source, taking inorganic ferric salt, inorganic copper salt and inorganic zinc salt as alkali metal sources, mixing the fluorine source and the alkali metal sources with graphene dispersion liquid, and preparing the graphene composite material by utilizing a solvothermal method, the preparation method comprises the following steps: reacting fluorine ions released by fluorine-containing ionic liquid with metal ions released by inorganic metal salt to form (FeCuZn) F3, and further compounding the (FeCuZn) F3 with graphene to form the (FeCuZn) F3 / rGO composite porous nano material. The invention further discloses a lithium-fluorine battery, the (FeCuZn) F3 / rGO composite porous nanometer material is used as an electrode material, and lithium-fluorine battery ion electrolyte is adopted as electrolyte. The prepared (FeCuZn) F3 / rGO material has excellent electrochemical performance, a lithium-fluorine battery prepared by using the (FeCuZn) F3 / rGO material as an electrode material can reach high specific capacity of 800mAh. G <-1 > at a discharge rate of 0.5 C, and meanwhile, the material has good rate capability and excellent electrochemical stability.

Description

technical field [0001] The invention relates to the field of electrode materials for lithium-fluorine batteries, in particular to a composite electrode of fluoride and carbon materials used in lithium-fluorine batteries, and a preparation method and application thereof. Background technique [0002] With the rapid advancement of the global economy and the continuous consumption of fossil energy, the resulting energy crisis and environmental pollution are increasingly intensifying, seriously threatening the survival of human beings. In this context, people are actively looking for and developing various new types of clean energy, such as solar energy, wind energy, tidal energy, nuclear energy, biological energy and so on. In the energy field, it has become increasingly important to develop an efficient, low-cost, long-life, and environmentally friendly energy conversion and storage system. Among them, secondary batteries include rechargeable lithium-ion batteries (LIBs), sod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/02H01M4/36H01M4/525H01M4/58
CPCH01M4/02H01M4/366H01M4/58H01M4/525H01M2004/021Y02E60/10
Inventor 吕建国练家乐
Owner ZHEJIANG UNIV
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