相关实验视频

Updated: Jun 6, 2025

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions

Published on: October 5, 2019

有效和稳定的光辅助离子电池通过光阴极与协同增强载体动力学实现

Zelin Ma¹, Shiyao Wang², Zhuangzhuang Ma³

¹State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi'an, 710072, People's Republic of China.

Nano-micro letters

|November 27, 2024

概括

本研究介绍了一种使用激光嵌入的等离子纳米晶体来增强光辅助离子电池 (PLIB) 中载体运输的批量异质连接策略. 这种方法显著提高了基于TiO2的光阴极的充电性能和稳定性.

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:

高效的光阴极对于光辅助离子电池 (PLIB) 来说至关重要.
快速载体运输是电化学活性光阴极的关键挑战.
目前的PLIB需要改进的电荷分离和移动性,以提高性能.

研究的目的:

开发一种促进光阴极载体移动性的通用方法.
调查批量异质连接对PLIB性能的影响.
为了提高光充电过程中的光充电分离和运输.

主要方法:

激光辅助嵌入等离子纳米晶体以创建批量异质连接.
基于TiO2的光阴极的制造.
实验性光子光谱和有限差异时间域 (FDTD) 模拟.
在PLIB中进行电化学性能测试.

主要成果:

观察到光电荷分离和传输的同步增强.
在TiO2中引发的等离子热电子注入和氧气空缺改善了载体动态.
取得的基准性能:在照明下在0.2 A g-1下276 mAh的g-1容量.
在3 A g-1.0 的光转换效率为1.276%.
在200个循环中,最小的容量和coulombic效率损失.

结论:

大量异质连接策略有效地提高了光阴极中的载体流动性.
激光辅助的等离子纳米晶体集成为改善PLIB提供了一种多功能方法.
这种方法为基于TiO2的光阴极在光辅助储能中设定了新的性能基准.

关键词:

大量异质连接的异质连接.航空母舰动态航空母舰动态摄影辅助的离子电池是离子电池.塑金属纳米晶体塑金属纳米晶体 TiO2纳米纤维的使用方法

更多相关视频

Construction and Testing of Coin Cells of Lithium Ion Batteries

Construction and Testing of Coin Cells of Lithium Ion Batteries

Published on: August 2, 2012

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

相关概念视频

Batteries and Fuel Cells

Batteries and Fuel Cells

A battery is a galvanic cell that is used as a source of electrical power for specific applications. Modern batteries exist in a multitude of forms to accommodate various applications, from tiny button batteries such as those that power wristwatches to the very large batteries used to supply backup energy to municipal power grids. Some batteries are designed for single-use applications and cannot be recharged (primary cells), while others are based on conveniently reversible cell reactions that...

Photochemical Electrocyclic Reactions: Stereochemistry

Photochemical Electrocyclic Reactions: Stereochemistry

The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation

Thermal and Photochemical Electrocyclic Reactions: Overview

Thermal and Photochemical Electrocyclic Reactions: Overview

Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.