Disclosed are a lithium ion battery positive electrode material and a preparation method therefor. The lithium ion battery positive electrode material comprises a layered positive electrode material matrix and a defect layer, wherein the layered positive electrode material matrix comprises a main body plate layer and a lithium layer, and the main body plate layer comprises a transition metal layer and a lithium layer; and wherein the defect layer is composed of atoms, the periodic arrangement of which is different from that of the matrix atoms or the composition of which is different from that of the matrix elements; and the defect layer is parallel to the 003 crystal plane of the layered positive electrode material matrix, and has a size of 0.1-50 nm in at least one direction, and of 10-5000 nm in at least another direction; when the defect layer is composed of atoms with a different periodic arrangement from that of the matrix atoms, it has a different interlayer spacing from that of the matrix; and when the defect layer is composed of atoms with a different composition from that of the matrix elements, it comprises a first element or a second element, and the content of the first element or the second element in the defect layer is greater than or equal to the content thereof in the layered positive electrode material matrix. The first element or the second element in the defect layer is filled into gaps between the main body plate layers, or ions formed by the first element in the defect layer replace cations of the layered positive electrode material matrix, or ions formed by the second element in the defect layer replace anions of the layered positive electrode material matrix. During charging and discharging, the defect layer of the lithium ion battery positive electrode material plays the role of buffering the volume change of the positive electrode material, and the structure of the lithium ion battery positive electrode material can thus be stabilized.

Lithium ion battery positive electrode material and preparation method therefor

The invention provides a lithium ion battery positive electrode material and a preparation method thereof. The lithium ion battery positive electrode material comprises a layered positive electrode material matrix and a filling layer, the layered positive electrode material matrix comprises main body plate layers and a lithium layer, the filling layer comprises a first element or a second element,and the content of the first element or the second element in the filling layer is higher than the content of the first element or the second element in the layered positive electrode material matrix; and the first element or the second element in the filling layer is arranged in a gap between the main body plate layers, or ions formed by the first element in the filling layer replace cations ofthe layered positive electrode material matrix, or ions formed by the second element in the filling layer replace anions of the layered positive electrode material matrix. In the charging and discharging process, the volume of the filling layer in the positive electrode material of a lithium ion battery does not change along with the volume of the layered positive electrode material matrix, so that the positive electrode material structure of the lithium ion battery is stabilized.

Lithium ion battery positive electrode material and preparation method

Popular Tasks used by Researchers

How can I help with your research?

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

We encountered an error while loading the panel. Please try refreshing the page.

Something went wrong

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

Anyone with the link can view this chat. You can switch it back to private anytime.

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Li Yangxing

Author Tools

Chat about Author

Papers

Lithium ion battery positive electrode material and preparation method

Lithium ion battery positive electrode material and preparation method therefor