一种钠离子电池极片
By using carbon nanotubes as a conductive agent in sodium-ion battery electrodes and adjusting their ID/IG value and aspect ratio, the problems of low energy density and high cost of sodium-ion batteries have been solved, realizing a battery design with high energy density and low cost, which is suitable for the electric vehicle field.
CN116525757BActive Publication Date: 2026-07-17湖北冠毓新材料科技有限公司
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 湖北冠毓新材料科技有限公司
- Filing Date
- 2023-05-18
- Publication Date
- 2026-07-17
Smart Images
Figure CN116525757B_ABST
Abstract
本发明公开了一种钠离子电池极片，包括集流体和设置在集流体上的涂层组成；涂层内包括：活性物质、粘结剂和导电剂；导电剂有导电炭黑和纤维状的碳纳米管组成；极片在远离集流体的极片厚度方向上导电剂总量和碳纳米管的含量逐渐减少，且远离集流体厚度方向上的碳纳米管的ID / IG值逐渐减小，长径比逐渐增大。碳纳米管的ID / IG值越小，长径比越大导电性越好。本发明使用更高导电性的碳纳米管来降低导电剂总用量，同时采用不同长径比和ID / IG的碳纳米管方便其在浆料中分散，既保证了极片中活性物质性能的发挥，提升极片中活性物质的负载量，提升能量密度，又可以降低成本。
Need to check novelty before this filing date? Find Prior Art