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密度高的碳氧化石墨烯用于合成高性能纳西康纳斯电极,用于纳离子电池

Ievgen Obraztsov¹, Anita Cymann-Sachajdak^2,3, Kamila Bruniecka²

¹Regional Centre of Advanced Technologies and Materials (RCPTM), Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitelů 27, Olomouc 77 900, Czech Republic.

ACS applied materials & interfaces

|January 14, 2026

概括

石墨烯酸通过提高导电性和活性物质含量来增强离子电池阴极,如Na3V2(PO4) 3 (NVP). 这使得下一代能源存储的性能和稳定性都更高.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
储能储能储能储能储能储能

背景情况:

离子电池 (SIB) 是离子电池的经济高效替代品.
使用NASICON框架的Na3V2(PO4) 3 (NVP) 显示出作为高压SIB阴极的前景.
由于电子导电性低和水龙头密度差,NVP的实际应用受到阻碍.

研究的目的:

开发一种合成策略,以提高NVP阴极性能.
为了利用石墨烯酸 (GA) 作为NVP合成的多功能添加剂.
为了增强NASICON型SIB电极的电化学性能.

主要方法:

采用密度高的碳氧化石墨烯 (石墨烯酸) 作为结合剂,pH调节剂和现场碳前体.
合成的NVP颗粒涂有由GA.定的一种合规碳外.
制造了高活性物质分数 (85 wt%) 的电极,并评估了它们的电化学性能.

主要成果:

GA促进了V5+减少到V3+,阶段纯NVP形成,以及碳的均生长.
优化的NVP@GA阴极表现出出色的电荷转移动力学和高点滴密度.
实现了高达15 A gEM-1的显著速率能力,保持了65.4%的理论能力,并保持了稳定的循环.

结论:

石墨烯酸是一种多功能添加剂,用于定制NASICON的阴极特性.
开发的方法为离子电池的高性能酸盐基阴极提供了一条途径.
这种方法可以扩展到其他纳西康结构材料,用于先进的储能应用.

关键词:

含有N-的石墨烯.这里是纳西康尼.碳碳碳碳碳碳阴极是指一个阴极.核心-外核心-外核心-外石墨烯酸是什么?石墨烯酸是什么?酸盐的使用方法

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