相关实验视频

Updated: May 28, 2025

The Effect of Charging and Discharging Lithium Iron Phosphate-graphite Cells at Different Temperatures on Degradation

The Effect of Charging and Discharging Lithium Iron Phosphate-graphite Cells at Different Temperatures on Degradation

Published on: July 18, 2018

在离子电池中使用LiCrTiO的兴奋剂诱导的记忆效应₄

Yu Wu¹, Wenting Ji¹, Zhihua Xu¹

¹State Key Laboratory of Marine Resources Utilization in South China Sea, Key Laboratory of Research on Utilization of Si-Zr-Ti Resources of Hainan Province, School of Materials Science and Engineering, Hainan University, Haikou 570228, China.

ACS applied materials & interfaces

|February 14, 2025

概括

在离子电池 (LIB) 中观察到的记忆效应来自充电和放电过程中特定位置之间的可逆离子迁移的Al-doped LiCrTiO4.

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
电池技术电池技术

背景情况:

离子电池 (LIB) 的记忆效应主要观察到特定的双相电极材料.
这种现象与电极结构内的离子交换机制有关.

研究的目的:

为了合成Al-doped LiCrTiO4并研究其记忆效应.
阐明本材料中观察到的记忆效应的潜在机制.

主要方法:

喷雾干燥和高温烧结用于材料合成.
进行X射线衍射 (XRD) 和电化学测试.
在现场XRD和神奇角度旋转的核磁共振 (NMR) 用于机械研究.

主要成果:

化物LiCrTiO4已成功合成,并在充电时表现出记忆效应.
随着Al-doping水平的增加,记忆效应会加剧,和度约为0.25.25的Al:Ti比率.
3+离子占据8a位点,+离子在8a和16c位点之间迁移,在深度放电期间,额外的16c到16d位点跳跃.

结论:

在Al-doped LiCrTiO4中,记忆效应源于16c和16d位点之间的可逆Li+离子交换.
诱导额外的可逆离子迁移是一种可行的策略,可以在LIB电极材料中设计记忆效应.

关键词:

在阿尔·兴奋剂方面,阿尔·兴奋剂.离子电池是一种离子电池.这就是 LiCrTiO4 的含量.记忆效应记忆效应记忆效应螺旋的结构是螺旋的结构.

更多相关视频

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

$In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries$ 11:25

In Situ Neutron Powder Diffraction Using Custom-made Lithium-ion Batteries

Published on: November 10, 2014

相关概念视频

Long-term Potentiation

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when...

Long-term Depression

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over...