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Processes at Electrodes

Processes at Electrodes

The electrode interacts with ions in the electrolyte solution at its interface. The rate of oxidation and reduction depends on the speed at which electrons can transfer through this interface. As ions attach to or leave the electrode surface, the electrode acquires a charge, and an electrical potential forms across the interface, making the process more difficult to reach equilibrium. The charge on the electrode affects the local ion concentrations in the solution, though thermal motion...

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Updated: Jul 20, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

Published on: August 12, 2013

低曲率的梯度设计克服了高负载固态阴极中的动力限制.

Guangzeng Cheng¹, Jinping Yu¹, Yonghui Wang¹

¹School of Materials Science and Engineering, Ocean University of China, Qingdao, 266404, China.

Angewandte Chemie (International ed. in English)

|January 23, 2025

概括

开发先进的固态电池 (SSB) 需要高负载阴极. 这项研究介绍了一种电导度梯度阴极设计,可以克服离子运输的限制,使厚阴极能够快速充电和高能量密度.

关键词:

复合性阴极是一种复合性阴极.梯度梯度是指一个梯度.高负载的高负载机低扭曲性的低扭曲性固态电池是一种固态电池.

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Last Updated: Jul 20, 2026

Solid-state Graft Copolymer Electrolytes for Lithium Battery Applications

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Published on: August 12, 2013

Ambient Method for the Production of an Ionically Gated Carbon Nanotube Common Cathode in Tandem Organic Solar Cells

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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:

固态电池 (SSB) 的商业化受到厚阴极性能限制的阻碍.
扭曲的离子运输路径和厚阴极中的缓慢的固体-固体扩散阻碍了电化学动力学,并限制了高电流密度的容量.

研究的目的:

开发一种用于高充电固态电池的新型阴极结构,使其能够快速充电.
通过改善离子运输和减轻度梯度,克服厚阴极的动力限制.

主要方法:

设计和制造具有低曲率离子通路的导电梯度阴极.
在各种电流密度下对LiNi_0.8Co_0.1Mn_0.1O₂和LiFePO₄阴极进行电化学测试.
评估室温 (RT) 容量和面积容量.

主要成果:

LiNi_0.8Co_0.1Mn_0.1O₂阴极在5C时实现了147mAhg-1的RT容量,10C时达到110mAhg-1的RT容量.
在3C时,LiNi0.8Co0.1Mn0.1O2阴极的RT面积容量达到3.3 mAh cm^-2
导电梯度策略证明了LiFePO₄阴极的普遍性.

结论:

拟议的导电梯度阴极设计有效地增强了离子传输,并使厚厚的固态电池阴极能够快速充电.
这种方法在SSB中促进了同时高的能量和功率密度.
该战略为高负载固态电池的大规模应用提供了一个有前途的解决方案.