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Pod-shaped MoS2-SnO2 magnesium-lithium hybrid ion battery positive electrode material as well as synthesis method and application thereof

A mos2-sno2, ion battery technology, applied in battery electrodes, positive electrodes, secondary batteries, etc., can solve problems such as unstable structure, low activity, reduced battery system capacity, rate characteristics, and cycle stability

Pending Publication Date: 2020-07-10
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, the lithium-intercalation cathode materials used in lithium-ion batteries and dual-salt batteries have single components, simple structure, insufficient conductivity, low activity, unstable structure, and lack of channels for rapid ion extraction, which seriously restrict the lithium-ion battery. Rapid saturation insertion / extraction reduces the capacity, rate characteristics and cycle stability of the battery system

Method used

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  • Pod-shaped MoS2-SnO2 magnesium-lithium hybrid ion battery positive electrode material as well as synthesis method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0031] A pod-shaped MoS 2 -SnO 2 Magnesium-lithium hybrid ion battery cathode material and its synthesis method.

[0032] A pod-shaped MoS 2 -xSnO 2 Magnesium-lithium hybrid ion battery cathode material, one-dimensional nanotube-like SnO 2 Discontinuous intercalation of active MoS 2 Pod-like composite cathode material formed by nanoflowers, one-dimensional nanotube-like SnO 2 Accounting for x=40~60wt.%, the rest is nano flower-like MoS 2 .

[0033] A pod-shaped MoS 2 -xSnO 2 The synthesis method of magnesium-lithium hybrid ion battery cathode material, x=40wt.% comprises the following steps;

[0034] step one:

[0035] 1.5g SnCl 2 2H 2 O was dissolved in a mixed solution consisting of 1.0 g absolute ethanol and 1.0 g DMF, and stirred at 800 rap / min for 1.5 h at room temperature to obtain A solution;

[0036] Step two:

[0037] Dissolve 0.2g of PVP in the above solution A, and continue to stir at 800rap / min for 4h at room temperature to obtain solution B;

[0038...

Embodiment 2

[0044] A pod-shaped MoS 2 -SnO 2 Magnesium-lithium hybrid ion battery cathode material and its synthesis method.

[0045] A pod-shaped MoS 2 -xSnO 2 Magnesium-lithium hybrid ion battery cathode material, one-dimensional nanotube-like SnO 2 Discontinuous intercalation of active MoS 2 Pod-like composite cathode material formed by nanoflowers, one-dimensional nanotube-like SnO 2 Accounting for x=40~60wt.%, the rest is nano flower-like MoS 2 .

[0046] A pod-shaped MoS 2 -xSnO 2 The synthesis method of magnesium-lithium hybrid ion battery cathode material, x=50wt.% comprises the following steps;

[0047] step one:

[0048] 1.75g ​​SnCl 2 2H 2 O was dissolved in a mixed solution consisting of 2.0 g absolute ethanol and 2.0 g DMF, and stirred at 800 rap / min for 2 h at room temperature to obtain A solution;

[0049] Step two:

[0050] Dissolve 0.4g of PVP in the above solution A, and continue to stir at 800rap / min for 5h at room temperature to obtain solution B;

[005...

Embodiment 3

[0057] A pod-shaped MoS 2 -SnO 2 Magnesium-lithium hybrid ion battery cathode material and its synthesis method.

[0058] A pod-shaped MoS 2 -xSnO 2 Magnesium-lithium hybrid ion battery cathode material, one-dimensional nanotube-like SnO 2 Discontinuous intercalation of active MoS 2 Pod-like composite cathode material formed by nanoflowers, one-dimensional nanotube-like SnO 2 Accounting for x=40~60wt.%, the rest is nano flower-like MoS 2 .

[0059] A pod-shaped MoS 2 -xSnO 2 The synthesis method of magnesium-lithium hybrid ion battery cathode material, x=60wt.% comprises the following steps;

[0060] step one:

[0061] 2.0g SnCl 2 2H 2 O was dissolved in a mixed solution consisting of 3.0 g absolute ethanol and 3.0 g DMF, and stirred at 800 rap / min for 2.5 h at room temperature to obtain A solution;

[0062] Step two:

[0063] Dissolve 0.6g of PVP in the above solution A, and continue stirring at room temperature at 800rap / min for 6h to obtain solution B;

[006...

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Abstract

The invention relates to a pod-shaped MoS2-SnO2 magnesium-lithium hybrid ion battery positive electrode material as well as a synthesis method and application thereof, the synthesis method comprises the following steps: step 1, dissolving SnCl2. 2H2O in a mixed solution composed of absolute ethyl alcohol and DMF to obtain a solution A; 2, dissolving PVP in the solution A, and a solution B is obtained; 3, adding nano flower-like MoS2 and mineral oil into the solution B, and stirring to obtain a precursor solution C for electrostatic spinning; and 4, setting the flow rate of an injection pump tobe 8mL. H <-1 >, and spraying the solution C, performing high-voltage electrostatic spinning, collecting the thin film on the silk collecting plate after the electrostatic spinning is finished, performing annealing treatment in air, and naturally cooling the thin film to room temperature to obtain a powdery pod-shaped MoS2-SnO2 magnesium-lithium hybrid ion battery positive electrode material sample. The charging and discharging capacity and dynamic characteristics of the magnesium-lithium double-salt battery and the cycling stability of the magnesium-lithium double-salt battery are improved,and the service life of the battery is prolonged.

Description

technical field [0001] The invention relates to the technical field of secondary power battery materials, in particular to a pod-shaped MoS 2 -SnO 2 Magnesium-lithium hybrid ion battery cathode material and its synthesis method and application. Background technique [0002] The development and utilization of energy is accompanied by human development and social progress. Energy is a necessity in daily life and "drives" human life and social progress. Rapid population growth and rapid expansion of heavy industry lead to rising energy demand, and environmental problems caused by massive consumption of fossil energy are gradually emerging. However, traditional fossil energy is non-renewable and has been over-exploited, forcing the world to fall into the dilemma of fossil energy depletion and environmental pollution. It is imminent to develop and utilize clean and efficient renewable energy sustainable energy and upgrade the current energy system. Human beings always spare no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/58H01M10/04H01M10/0525H01M10/054B82Y30/00B82Y40/00
CPCH01M4/628H01M4/624H01M4/5815H01M10/0525H01M10/054H01M10/0427B82Y40/00B82Y30/00H01M2004/028H01M2004/021Y02E60/10Y02P70/50
Inventor 侯小江侯凯铭石洪昌冯雷锁国权叶晓慧张荔杨艳玲朱建锋
Owner SHAANXI UNIV OF SCI & TECH
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