相关实验视频

Updated: May 28, 2025

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

来自玉米丝的生物质碳材料用于低频微波吸收和储能

Juan Shi¹, Xi Zhang¹, Hongyu Zhu¹

¹College of Physics, Sichuan University, Chengdu 610064, China. xizhang@scu.edu.cn.

|February 10, 2025

概括

玉米丝被转化为生物质碳材料,用于先进的低频微波吸收和能量储存. 这些材料提供了极好的雷达吸收和稳定的离子电池性能.

科学领域:

材料科学材料科学材料科学
电磁波吸收方式电磁波吸收方式
储能储能储能储能储能储能

背景情况:

来自农业废物的生物质碳 (BC) 材料对微波吸收 (MA) 有希望.
现有的研究主要针对高频MA,对低频 (2-8 GHz) MA和储能应用的探索有限.
需要多功能材料来解决低频MA和能量存储的问题.

研究的目的:

从玉米丝开发生物质碳 (BC) 材料,以增强低频微波吸收 (MA).
研究这些BC材料在储能应用中的潜力,特别是离子电池中的潜力.
建立一种简单,经济高效的方法来生产多功能BC材料.

主要方法:

玉米丝被通过化学激活和碳化加工成生物质碳 (BC) 材料.
由此产生的BC材料因其多孔结构和特定表面积而具有特征.
微波吸收性能通过测量反射损失 (RL) 和有效吸收带宽 (EAB) 来评估.

主要成果:

最优的BC样本显示出优异的低频MA,其反射损失 (RL) 在6.88GHz时为-75dB.
实现了有效吸收带宽 (EAB) 下降至2.8GHz,表明强大的低频吸收能力.
这种材料表现出极好的雷达截面减小和高初始放电特异容量,在离子电池中为1015.54mA·hg-1 .

结论:

来自玉米丝的BC材料为高性能低频微波吸收提供了有希望的解决方案.
开发的BC材料具有出色的多功能能力,包括在离子电池中有效储存能量.
本研究提出了一个简单的,低成本的制造路线,用于各种技术应用的先进BC材料.

更多相关视频

Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization

Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization

Published on: May 19, 2019

Fabrication of 3D Carbon Microelectromechanical Systems C-MEMS

Fabrication of 3D Carbon Microelectromechanical Systems C-MEMS

Published on: June 17, 2017

相关概念视频

Energy Stored in Capacitors

Energy Stored in Capacitors

A parallel plate capacitor, when connected to a battery, develops a potential difference across its plates. This potential difference is key to the operation of the capacitor, as it determines how much electrical energy the capacitor can store.
By integrating the equation that relates voltage and current in a capacitor, one can derive an equation for the voltage across the capacitor at any given time. This equation is crucial in understanding and predicting the behavior of capacitors in...

Energy Stored in a Capacitor

Energy Stored in a Capacitor

When an archer pulls the string in a bow, he saves the work done in the form of elastic potential energy. When he releases the string, the potential energy is released as kinetic energy of the arrow. A capacitor works on the same principle in which the work done is saved as electric potential energy. The potential energy (UC) could be calculated by measuring the work done (W) to charge the capacitor.