Graded porous carbon negative electrode material with nano-metal synergistic activity and application of graded porous carbon negative electrode material in long-life lead-carbon battery

By introducing hierarchical porous carbon materials and doping them with nano-metals into the negative electrode of lead-acid batteries, the problems of sulfation and hydrogen evolution were solved, achieving long life and high performance of lead-acid batteries, especially exhibiting excellent electrochemical performance under high-rate charge and discharge conditions.

CN121565864APending Publication Date: 2026-02-24孙楠
0 Cites 2 Cited by

Patent Information

Application Number
CN202511269994.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-08
Publication Date
2026-02-24

AI Technical Summary

Technical Problem

Traditional lead-acid batteries are prone to sulfation failure under partial charge conditions. Carbon additives can trigger hydrogen evolution side reactions, leading to shortened battery life and decreased performance.

Method used

A hierarchical porous carbon anode material with synergistic activity of nano-metals is used. By optimizing the pore structure of the carbon matrix and introducing nano-metals or their compounds, a carbon-metal synergistic structure is formed, which inhibits sulfation, enhances the capacitance effect, and suppresses the hydrogen evolution reaction.

Benefits of technology

It significantly extends the cycle life of lead-acid batteries, improves charge and discharge performance, reduces hydrogen evolution and water loss rates, and maintains high-rate performance and capacitance characteristics.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention relates to the technical field of lead-acid batteries and novel electrochemical energy storage materials, in particular to a graded porous carbon negative electrode material with nano-metal synergistic activity and application of the graded porous carbon negative electrode material in a long-life lead-carbon battery. The material takes hierarchical pore structure carbon as a matrix (which has micropores, mesopores and macropores at the same time, and the specific surface area reaches 1000m < 2 > / g), and is uniformly loaded with nano metal particles (such as Fe, Co, Sn and the like with the particle size of lt; and the content is 1%-10%). By optimizing the carbon pore structure and introducing the nano-metal, sulfation is remarkably inhibited, the capacitance effect is enhanced, and the hydrogen evolution reaction is reduced, so that the cycle life of the lead-acid battery is prolonged, and the charge-discharge performance of the lead-acid battery is improved. The preparation method is simple and controllable, is suitable for a lead-acid battery negative electrode additive, can be widely applied to the fields of start-stop batteries, energy storage systems and the like, and has important industrial application value.
Need to check novelty before this filing date? Find Prior Art