相关实验视频

Updated: Jan 9, 2026

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

A Polymer-based Piezoelectric Vibration Energy Harvester with a 3D Meshed-Core Structure

Published on: February 20, 2019

通过抛光介导的缺陷双极对齐,以同时优化压电和压触媒中的载体度

Xiaoli Xu^1,2, Ying Wang¹, Wanwan Cheng¹

¹College of Materials and Chemistry, China Jiliang University, Hangzhou, China.

Communications chemistry

|December 10, 2025

概括

研究人员通过应用电场来增强压催化材料以提高载体度,而不会牺牲压电特性. 这一突破提高了可持续气生产的效率.

科学领域:

材料科学材料科学材料科学
催化剂是一种催化剂.
能源转换能源转换

背景情况:

具有高系数的压电材料通常具有较低的载体度,限制了压催化.
缺陷工程可以提高载体度,但可能会降低压电性能.
优化载体度和压电性质对于高效的压催化非常重要.

研究的目的:

开发一种方法来增加压电材料中的载体度,而不损害其压电性质.
提高用于生产的压触媒材料的性能.

主要方法:

将外部电场 (抛光过程) 应用于缺乏氧气的Bi2WO6-x材料.
研究了抛光对极化,载体度和压电特性的影响.
在超声波振动下评估了压催化生产效率.

主要成果:

抛光过程显著提高了有效压电系数 (d*33),从约4.79 pm/V升至约39.89 pm/V.
保持了较高的载体度 (Nd ~7.39×10^20 cm^-3).
实现了压催化生产效率为~3.49μmol g^-1 h^-1 W^-1.

结论:

外部电场可以有效地同时增强压电和压催化性能.
这种方法为设计高效,节能的焦催化材料提供了一条途径.
这些发现代表了通过压催化水分裂生产的重大进步.

更多相关视频

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

A Fabrication and Measurement Method for a Flexible Ferroelectric Element Based on Van Der Waals Heteroepitaxy

Published on: April 8, 2018

Characterization of Full Set Material Constants and Their Temperature Dependence for Piezoelectric Materials Using Resonant Ultrasound Spectroscopy

Characterization of Full Set Material Constants and Their Temperature Dependence for Piezoelectric Materials Using Resonant Ultrasound Spectroscopy

Published on: April 27, 2016

相关概念视频

Potential Due to a Polarized Object

Potential Due to a Polarized Object

A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...