Rare-earth doped nickel, cobalt and manganese ternary material wide temperature lithium ion battery and production method thereof

A lithium-ion battery, rare earth doping technology, applied in battery electrodes, secondary batteries, electrochemical generators, etc., can solve problems such as unsatisfactory temperature adaptability, inability to meet power requirements, and achieve good cycle performance , The effect of facilitating high-intensity startup acceleration and high power tolerance

Inactive Publication Date: 2017-05-31
河北绿草地新能源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the capacity of this kind of positive electrode material is still not enough to meet the power demand of most occasions, and the temperature adaptability is not satisfactory. Due to people's continuous pursuit of durable use, the positive electrode material is required to have higher capacity and temperature adaptability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The first embodiment provides a production method of a rare earth-doped nickel-cobalt-manganese ternary material wide-temperature lithium-ion battery.

[0028] Specifically, Embodiment 1 of the present invention provides a rare earth-doped nickel-cobalt-manganese cylindrical wide-temperature lithium battery. The positive electrode material of the battery is nickel-cobalt-manganese ternary material doped with rare earth element neodymium, and neodymium is doped in L i N i0.5 co 0.3 mn 0.2 o 2 L can be formed in i N i0.5 co 0.3 mn 0.2 N d o 2 compound.

[0029] Concrete preparation method is carried out according to the following steps:

[0030] Step S110, weighing lithium salts, nickel salts, manganese salts, cobalt salts and rare earth nitrates according to preset substance ratios.

[0031] Step S111 , dissolving the weighed lithium salt, nickel salt, manganese salt, cobalt salt and rare earth nitrate in 95%-100% ethanol to obtain a metal salt ethanol soluti...

Embodiment 2

[0040] Embodiment 2 of the present invention also provides a production method of a rare earth-doped nickel-cobalt-manganese ternary material wide-temperature lithium-ion battery.

[0041] Specifically, a 10Ah positive electrode material is a rare earth-doped nickel-cobalt-manganese ternary material aluminum shell square wide temperature lithium battery.

[0042] Its preparation method includes:

[0043] Step S210, weigh LiNO according to the ratio of the amount of substances to 1.56:0.66:0.25:0.11:0.08 3 , Mn(CH 3 COO) 2 4H 2 O, Ni(CH 3 COO) 2 ·6H 2 O, Co(CH 3 COO) 2 4H 2 O and Nd(NO 3 ) 3 ·6H 2 O;

[0044] In step S211, the weighed LiNO 3 , Mn(CH 3 COO) 2 4H 2 O, Ni(CH 3 COO) 2 ·6H 2 O, Co(CH 3 COO) 2 4H 2 O and Nd(NO 3 ) 3 ·6H 2 O was dissolved in absolute ethanol to obtain a transparent metal salt ethanol solution, LiNO 3 , Mn(CH 3 COO) 2 4H 2 O, Ni(CH 3 COO) 2 ·6H 2 O, Co(CH 3 COO) 2 4H 2 O and Nd(NO 3 ) 3 ·6H 2 The total concentrati...

Embodiment 3

[0049] Embodiment 3 of the present invention provides yet another possible implementation of a production method of a rare earth-doped nickel-cobalt-manganese ternary material wide-temperature lithium-ion battery. Specifically, the method includes steps:

[0050] Step S310, weigh LiNO according to the ratio of the amount of substances to 1.56:0.75:0.25:0.11:0.15 3 , Mn(CH 3 COO) 2 4H 2 O, Ni(CH 3 COO) 2 ·6H 2 O, Co(CH 3 COO) 2 4H 2 O and Nd(NO 3 ) 3 ·6H 2 O;

[0051] In step S311, the weighed LiNO 3 , Mn(CH 3 COO) 2 4H 2 O, Ni(CH 3 COO) 2 ·6H 2 O, Co(CH 3 COO) 2 4H 2 O and Nd(NO 3 ) 3 ·6H 2 O was dissolved in absolute ethanol to obtain a transparent metal salt ethanol solution, LiNO 3 , Mn(CH 3 COO) 2 4H 2 O, Ni(CH 3 COO) 2 ·6H 2 O, Co(CH 3 COO) 2 4H 2 O and Nd(NO 3 ) 3 ·6H 2 The total concentration of O in absolute ethanol is 1.8mol / L;

[0052] Step S312, placing the obtained metal salt ethanol solution in a high-temperature furnace at a ...

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Abstract

The invention provides a rare-earth doped nickel, cobalt and manganese ternary material wide temperature lithium ion battery and a production method thereof. The production method comprises the following step: producing lithium salt, nickel salt, manganese salt, cobalt salt and rare earth nitrate according to a specific ratio through a special process, so as to obtain the rare-earth doped nickel, cobalt and manganese ternary material wide temperature lithium with the anode materials being LiNi0.5Co0.3Mn0.2Bd0.2 compound. A rare earth neodymium element is added into the anode materials nickel, cobalt and manganese of the lithium ion battery, the crystal structures of the anode materials are maintained, and a lattice constant C is only changed. The battery produced through the method has high reversible capacity, high cycle performance and high discharge capability, is wide in applicable temperature range, and can be used at minus 45 DEG C.

Description

technical field [0001] The invention relates to the technical field of battery production, and more specifically relates to a rare earth-doped nickel-cobalt-manganese ternary material wide-temperature lithium-ion battery and a production method thereof. Background technique [0002] With the continuous development of social civilization in recent years, especially since human society entered the information age and network age, it is more eager for high-quality electric energy. Therefore, batteries, especially secondary batteries, will inevitably play a pivotal role in the future society based on electric energy. Since the late 1990s, portable electronic devices such as mobile phones and notebook computers have been rapidly popularized around the world at an astonishing speed, and they have entered the homes of ordinary people faster and faster. The result is a rapid increase in the demand for small power supplies. Since portable electronic devices are compact and lightwei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/505H01M4/525H01M10/0525
CPCH01M4/505H01M4/525H01M10/0525Y02E60/10
Inventor 刘素国
Owner 河北绿草地新能源股份有限公司
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