相关实验视频

Updated: May 5, 2026

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Non-aqueous Electrode Processing and Construction of Lithium-ion Coin Cells

Published on: February 1, 2016

阴离子调节的海尔姆霍尔茨层使离子电池中超稳定的阳极具有刚性但灵活的SEI

Jiayang Sun¹, Yuchen Li², Linze Lv^1,3

¹College of Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu 215006, P. R. China.

ACS applied materials & interfaces

|October 30, 2025

概括

一个新的聚乙胺和植物酸 (PEIPA) 纳米层通过通过离子吸附和机械增强调节固体电解质介面 (SEI),稳定阳极,提高电池性能和循环寿命.

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
纳米技术纳米技术

背景情况:

阳极遭受体积膨胀,导致固体电解质间相 (SEI) 断裂和有限的循环寿命.
在赫尔姆霍尔茨平面中,SEI的特性受到阴离子吸附的关键影响.
开发SEI稳定策略对于先进的电池技术至关重要.

研究的目的:

开发一种用于稳定阳极的新型复合材料战略.
调查离子调节和机械增强在SEI形成中的作用.
为了提高基于的阳极的电化学性能和耐用性.

主要方法:

一个聚乙胺和植物酸 (PEIPA) 复合纳米层被合成并应用于阳极.
标志着PEIPA层吸附离子 (PF6-) 和增强SEI的能力.
评估了电化学性能,包括速率能力和循环稳定性.
用NCM811阴极组装完整的电池,以评估实际可行性.

主要成果:

PEIPA层选择性地吸附PF6-离子,促进形成一个富含LiF的SEI.
形成了一个"刚性而灵活"的复合SEI,具有高的Young模量 (2.45GPa) 和21倍的断裂能量.
经过修改的阳极在10°C下提供2000 mAh g-1,在0.5°C的800个循环后保持81.2%的容量.
观察到速度能力和周期寿命的显著改善.

结论:

PEIPA纳米层通过将离子调节和机械增强相结合,有效地稳定阳极.
这种离子调节策略为优化阳极上SEI形成提供了一个有希望的方法.
开发的方法提高了电池性能,为实际的阳极应用铺平了道路.

关键词:

赫尔姆霍尔茨的平面是赫尔姆霍尔茨的平面离子调节离子调节离子调节离子电池的离子电池是什么阳极是一种阳极.固体电解质相间阶段

更多相关视频

Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing

Focused Ion Beam Fabrication of LiPON-based Solid-state Lithium-ion Nanobatteries for In Situ Testing

Published on: March 7, 2018

Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

Screening of Coatings for an All-Solid-State Battery Using In Situ Transmission Electron Microscopy

Published on: January 20, 2023

相关概念视频

The Electrical Double Layer

The Electrical Double Layer

In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...

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...