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Aqueous lithium ion battery with high properties

A lithium-ion battery and lithium-ion technology, applied in the field of electrochemistry, can solve problems such as poor cycle performance at small rates, and achieve the effects of low cost, high power, and long cycle life

Active Publication Date: 2013-05-08
常州孚达新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: in the prior art, when the water-based lithium-ion battery is used as a power battery, the small-rate cycle performance is not good

Method used

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  • Aqueous lithium ion battery with high properties
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  • Aqueous lithium ion battery with high properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The positive electrode uses commercial grade spinel LiMn 2 o 4 , the slurry ratio according to LiMn 2 o 4 : conductive agent (acetylene black): binder (polytetrafluoroethylene) = 80:10:10 mixed slurry, then pressed into a film with a rolling mill, the above-mentioned pressed film was dried at a constant temperature at 100°C in a vacuum oven for 6 Hour.

[0031] The anode material uses pure TiP 2 o 7 , and its synthesis method is as follows: TiO 2 (1.20g, 15mmol) and NH 4 h 2 PO 4 (3.45g, 30mmol) were mixed and ground according to the stoichiometric ratio, then an appropriate amount (40mL) of distilled water was added, and the mixture was continuously stirred at 80°C until the mixture was dry. Finally, the above mixture was placed in a boat-shaped crucible, and then calcined in air at 700°C for 6 hours , namely TiP 2 o 7 .

[0032] Electrode preparation was as described above. In this embodiment, the actual capacity of the positive electrode material is 90mAhg...

Embodiment 2

[0035] The positive electrode uses commercial grade spinel LiMn 2 o 4 , the slurry ratio according to LiMn 2 o 4 : conductive agent (acetylene black): binder (polytetrafluoroethylene) = 80:10:10 mixed slurry, then pressed into a film with a rolling mill, the above-mentioned pressed film was dried at a constant temperature at 100°C in a vacuum oven for 6 Hour.

[0036] The negative electrode material uses carbon-coated TiP 2 o 7 , its synthetic method is as follows: with the TiP in embodiment 1 2 o 7 (3.33g, 15mmol) as the raw material, put it in a mortar and grind it into powder, then add 0.75% sucrose aqueous solution (21.4mL), stir continuously at 80°C until the mixture is dry, and finally put the above mixture in a boat crucible, and then calcined at 700 °C for 1 hour under nitrogen atmosphere to obtain carbon-coated C(2%)-TiP 2 o 7 .

[0037] Electrode preparation was as described above. In this embodiment, the actual capacity of the positive electrode material ...

Embodiment 3

[0040] The positive electrode uses commercial grade spinel LiMn 2 o 4 , the slurry ratio according to LiMn 2 o 4 : conductive agent (acetylene black): binder (polytetrafluoroethylene) = 80:10:10 mixed slurry, then pressed into a film with a rolling mill, the above-mentioned pressed film was dried at a constant temperature at 100°C in a vacuum oven for 6 Hour.

[0041] The negative electrode material is Fe 0.12 TiP 2 o 7.12 , its synthetic method is as follows: with the TiP in embodiment 1 2 o 7 As raw material, weigh TiP 2 o 7 (3.33g, 15mmol) and FeC 2 o 4 2H 2 O (0.324g, 1.8mmol) was placed in a mortar and mixed evenly, the above mixture was placed in a boat-shaped crucible, and then calcined at 700°C for 1 hour under a nitrogen atmosphere to obtain Fe 0.12 TiP 2 o 7.12 Material.

[0042] Electrode preparation was as described above. In this embodiment, the actual capacity of the positive electrode material is 90mAhg -1 , the actual capacity of the negative ...

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Abstract

The invention belongs to the technical field of electrochemistry, and particularly relates to a novel aqueous lithium ion battery with high properties. According to the aqueous lithium ion battery with the high properties provided by the invention, an ion intercalation-deintercalation mechanism used by the organic lithium ion battery is applied to an energy storage device using a solution as electrolyte. Ions for an intercalation reaction are lithium ions. According to the novel aqueous lithium ion battery with the high properties provided by the invention, a positive electrode uses an embeddable compound material with lithium ions; a negative electrode uses a C-MxTiP2O(7+y) (M is one or more than one of Fe, Al, Co, Ni, Mn, Zn and Cu ions) material coated by carbon; and the electrolyte uses aqueous electrolyte containing lithium ions. The aqueous lithium ion battery provided by the invention has the characteristics of long cycle life, high powder, security, low cost and no environment pollution, and is particularly applicable to an ideal power battery of an electric automobile.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and in particular relates to a novel high-performance aqueous lithium-ion battery. Background technique [0002] With the development of the economy, the excessive consumption of traditional energy by humans has led to increasingly serious energy and environmental problems. Now the world's annual energy consumption is converted into about 8 billion tons of oil, 80% of which are fossil fuels. According to the current rate of consumption, it will be exhausted in about 100 to 200 years. Therefore, the comprehensive and efficient development and utilization of new energy, energy-saving technology and environmental protection technology has become a very urgent issue. The development of electric vehicles is imperative. Countries around the world are actively developing electric vehicles. At present, the power sources of electric vehicles mainly include secondary batteries, electrochemical s...

Claims

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Application Information

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IPC IPC(8): H01M10/36H01M4/58H01M4/505
CPCY02E60/122Y02E60/10
Inventor 张汉平李成钢杜青孙晓辉
Owner 常州孚达新能源科技有限公司
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