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Electrode powder and electrode plate for lithium ion battery

A lithium battery and electrode powder technology, applied in battery electrodes, electrode carriers/current collectors, lithium batteries, etc., can solve problems such as reducing charge and discharge efficiency, affecting the mass transfer of electrode active materials and electrolyte, and charge transfer, so as to delay the reaction. , Improve the effect of chemical stability and physical stability

Active Publication Date: 2014-06-04
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the protective layer may affect the mass transfer (mass transfer) and charge transfer (electron transfer) between the electrode active material and the electrolyte, thereby reducing the efficiency of charging and discharging.

Method used

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  • Electrode powder and electrode plate for lithium ion battery
  • Electrode powder and electrode plate for lithium ion battery
  • Electrode powder and electrode plate for lithium ion battery

Examples

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Embodiment Construction

[0043] In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

[0044] Figure 1A is a schematic cross-sectional view of the lithium battery electrode powder according to the first embodiment.

[0045] Please refer to Figure 1A , the lithium battery electrode powder 100 of the first embodiment includes a core 102 and a nano-coating layer 104 . The core 102 contains a compound that can release lithium ions or combine with lithium ions under appropriate conditions (this material is sometimes referred to as "active material" in the art), such as lithiated metal oxides, a specific example of which can be LiNi 0.5 co 0.5 o 2 or LiNi 0.5 co 0.2 mn 0.3 o 2 , but not limited to this. The nano-coating layer 104 is disposed on the surface 103 of the core 102 , wherein the nano-coating layer 104 is composed of a plurality of nano-...

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Abstract

Provided is an electrode powder and an electrode plate for a lithium ion battery. The electrode powder includes a core and a nano-coating layer. The core contains a lithium compound. The nano-coating layer is disposed on a surface of the core and consists of a plurality of nanosheets.

Description

technical field [0001] The invention relates to a lithium battery electrode powder, and in particular to a lithium battery electrode powder with a nanometer coating. Background technique [0002] At present, the technology of lithium-ion batteries is developing toward high capacity and high power. Therefore, the performance and safety of batteries in high-temperature environments are topics of great concern. The life of a lithium-ion battery is closely related to the stability of its positive and negative electrode materials. In a lithium-ion battery, the electrolyte and the surface of the electrode material are in direct contact. During the charging and discharging process, the two will produce a chemical reaction, generate by-products, increase the impedance, and at the same time cause the metal and oxygen ions of the electrode material to dissolve, resulting in changes in structure and composition. This effect is especially pronounced when the battery is used at high te...

Claims

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Application Information

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IPC IPC(8): H01M4/13H01M4/131B82Y30/00
CPCB82Y30/00H01M4/382Y02E60/122H01M4/13H01M4/131H01M4/366H01M4/38H01M4/505H01M4/525H01M10/052Y02E60/10H01M4/70H01M4/134
Inventor 刘佳儿廖世杰蔡朝和张雅淇
Owner IND TECH RES INST
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