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调查子贝驱动硬碳作为离子电池的阳极,通过热水碳化方法制造的离子电池
Elif Canbaz1, Meral Aydin1, Rezan Demir-Çakan1
1Department of Chemical Engineering, Gebze Technical University, Kocaeli, Turkey.
Turkish journal of chemistry
|December 25, 2023
概括
子被转化为用于离子电池的硬碳阳极. 在1000°C以-酸粘合剂进行碳化,可以获得优越的电化学性能,在100个循环后达到232 mAh/g.
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:
- 硬碳是离子电池的一个有前途的阳极材料.
- 来自生物质的材料为传统的碳来源提供了可持续且具有成本效益的替代品.
- 子贝代表了丰富而未充分利用的纤维素化合物废物.
研究的目的:
- 从子中合成硬碳,用于离子电池阳极.
- 为了研究热解温度对花外衍生硬碳的结构和电化学特性的影响.
- 评估不同结合剂对合成硬碳电极的电化学行为的性能.
主要方法:
- 水热碳化 (HTC),然后在500,750和1000°C的温度下进行热解.
- 使用里埃变换红外光谱 (FTIR),扫描电子显微镜 (SEM) 和X射线衍射 (XRD) 的表征.
- 在半电池中进行电化学测试,包括静电充/放电和电化学阻抗光谱 (EIS).
主要成果:
- 碳化温度与硬碳的结构和电化学特性之间观察到强烈的相关性.
- 在1000°C时碳化的电极表现出增强的循环稳定性和特定容量.
- 与PVdF,CMC和PAA结合剂相比,Na-酸盐结合剂表现优越.
- 在0.1C的电流密度下,经过100个循环后,优化的电极实现了232 mAh/g的特定容量.
结论:
- 花可以有效地转化为用于离子电池的高性能硬碳阳极.
- 热解温度和粘合剂选择是优化电化学性能的关键因素.
- 这项研究提出了一种经济和可持续的方法,用于将农业废物提升为先进的储能材料.
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