来自自然聚合物的硬碳阳极材料的结构依赖电化学行为,用于下一代离子电池

相关实验视频

Updated: Jul 10, 2025

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Characterization of Electrode Materials for Lithium Ion and Sodium Ion Batteries Using Synchrotron Radiation Techniques

Published on: November 11, 2013

Jungpil Kim¹, Sang-Don Han², Bonwook Koo³

¹Carbon & Light Materials Application R&D Group, Korea Institute of Industrial Technology, Jeonju 54853, Republic of Korea.

|November 25, 2023

概括

素衍生的硬碳为离子电池提供了低成本的阳极. 通过热处理来定制它们的结构,优化了下一代能源存储的性能.

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
可再生能源可再生能源是可再生能源.

背景情况:

硬碳是离子电池 (SIB) 的关键阳极材料,因为它们的容量,循环寿命和成本.
生物质废物,如质素,为硬碳合成提供了可持续和经济的前体.
控制硬碳的结构对于提高它们的电化学性能至关重要.

研究的目的:

在不同温度下 (1000°C,1250°C,1500°C) 调查素衍生的硬碳的合成.
为了将这些硬碳的结构演变与它们在SIB中的电化学特性相关联.
了解结构变化如何影响可逆能力,速率能力和循环稳定性.

主要方法:

在1000°C,1250°C和1500°C的温度下,从红素前体中合成硬碳.
使用X射线衍射 (XRD),拉曼光谱和X射线光电子光谱 (XPS) 的结构特征.
电化学评估离子电池性能,包括容量,速率能力和循环稳定性.

主要成果:

热处理温度的增加逐渐调整了硬碳结构,减少了混乱和表面缺陷.
电化学分析显示,离子储存机制从斜坡区域转移到有增加排序的高原区域.
更高的处理温度导致更好的可逆能力,速率能力和循环稳定性.

结论:

宁是生产SIBs高性能硬碳阳极的可行前体.
热处理温度是调整红素衍生硬碳的结构和电化学性能的关键参数.
优化硬碳的结构特性对于开发先进的离子电池技术至关重要.

关键词:

阳极是一种极.硬碳是一种硬的碳.红色的线性蛋白质 (lignin) 是一种自然聚合物的天然聚合物.离子电池是一种离子电池.

更多相关视频

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Elemental-sensitive Detection of the Chemistry in Batteries through Soft X-ray Absorption Spectroscopy and Resonant Inelastic X-ray Scattering

Published on: April 17, 2018

Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance

Synthesizing a Gel Polymer Electrolyte for Supercapacitors, Assembling a Supercapacitor Using a Coin Cell, and Measuring Gel Electrolyte Performance

Published on: November 30, 2022

相关概念视频

Anionic Chain-Growth Polymerization: Overview

Anionic Chain-Growth Polymerization: Overview

The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...

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...

Anionic Chain-Growth Polymerization: Mechanism

Anionic Chain-Growth Polymerization: Mechanism

The mechanism for anionic chain-growth polymerization involves initiation, propagation, and termination steps. In the initiation step, a nucleophilic anion, such as butyl lithium, initiates the polymerization process by attacking the π bond of the vinylic monomer. As a result, a carbanion, stabilized by the electron‐withdrawing group, is generated. The resulting carbanion acts as a Michael donor in the propagation step and attacks the second vinylic monomer, which acts as a Michael...