Okay, I need to create a Wikipedia-style document about lithium-ion batteries under the categories of technology, automotive, and electric vehicles. Let me start by understanding the user's requirements.

First, the structure: H1 for the title, an overview section, several sections with H2 and H3 headings, and maybe references or related documents. The content needs to be accurate, objective, detailed but not too technical, easy to read, and use professional terms with explanations. Also, markdown formatting with proper hierarchy, lists, tables, code blocks if needed, and at least 800 characters.

The title is "리튬이온 배터리" (Lithium-Ion Battery). Let me outline the sections. The overview should introduce what lithium-ion batteries are, their importance in EVs. Then maybe history, working principle, types, advantages/disadvantages, applications in EVs, challenges, and future developments.

Wait, the user mentioned "전기차" (electric vehicles) as a subcategory, so I need to focus on how lithium-ion batteries are used in EVs. Maybe include sections like "전기차에서의 활용", "기술적 도전과 해결책".

I should check if there's any specific information about lithium-ion batteries in the context of electric cars that needs to be included. For example, different chemistries (like NMC, LFP), energy density, charging times, lifespan, safety issues.

Also, need to make sure each section has enough detail but isn't too verbose. Use H2 for main sections and H3 for subsections. Maybe a table comparing different battery types or their specifications.

I should avoid markdown in the thinking process but ensure that when writing the actual document, I use proper headings, lists, etc. Also, check for technical terms and explain them if necessary. For example, "리튬 이온" is lithium ions, so maybe clarify that in a note.

Need to make sure the content flows logically from introduction to details, then applications, challenges, future. Maybe include some statistics or examples of EVs using lithium-ion batteries.

Check for accuracy: when talking about history, mention key developments like the 1970s-80s research, Sony's commercialization in 1991. For working principle, explain the movement of ions between anode and cathode during charge/discharge.

In the applications section, discuss how they're used in EVs compared to other battery types, maybe mention specific models or companies. Challenges could include resource scarcity (lithium, cobalt), recycling issues, thermal management.

Future developments might involve solid-state batteries, new materials like silicon anodes, or improvements in charging technology.

Also, need to ensure the document is over 800 characters. Let me count: each section should have enough content. Maybe add a references section with sources like academic papers, industry reports, or reputable websites.

Avoid using any markdown in the thinking process but structure the final answer properly. Make sure all sections are covered and meet the user's requirements.