在离子电池中极材料的聚二氧化衍生陶中自由碳结构的调制
Yiling Quan1,2,3, Changhao Hu1,2,3, Peifeng Feng1,2,3
1State Key Laboratory of Fine Chemicals, Liaoning High Performance Polymer Engineering Research Center, Department of Polymer Science and Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China.
Molecules (Basel, Switzerland)
|September 28, 2024
概括
研究人员通过控制自由碳含量用二维尼尔 (DVB) 和用铁 (Fe) 进行石墨化来增强氧化碳 (SiOC) 阳极材料. 这提高了电导率,提高了电池的性能和稳定性.
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:
- 聚合物衍生的氧化碳 (SiOC) 陶是电池的有希望的基于的阳极材料.
- 低电导率和不良循环稳定性限制了SiOC阳极的性能.
- 控制自由碳含量和石墨化是提高SiOC电化学性能的关键.
研究的目的:
- 调节SiOC陶中的自由碳含量和石墨化,以提高电池性能.
- 研究乙烯 (DVB) 和铁 (Fe) 对SiOC结构和电化学行为的影响.
- 为了合成和描述高性能阳极的新型Fe改性SiOC材料.
主要方法:
- 通过简单的热解工艺合成SiOC陶材料 (CF).
- 使用乙 (DVB) 来控制SiOC前体中的自由碳含量.
- 使用过渡金属铁 (Fe) 来促进碳石墨化并诱导碳纳米管 (CNT) 的形成.
主要成果:
- 前体中DVB含量增加导致SiOC中自由碳含量增加.
- 铁的添加有效地促进了自由碳的石墨化,形成了碳纳米管 (CNT).
- 合成的CF电极材料表现出高可逆容量 (1154.05mAhg-1在100mAg-1) 和出色的循环稳定性 (1000个循环在2000mAg-1).
结论:
- 铁诱导的碳石墨化和CNT形成显著提高SiOC阳极的电化学性能.
- 开发的SiOC陶材料为高性能,稳定的离子电池阳极提供了有前途的解决方案.
- 在SiOC内部优化碳结构是推进下一代储能材料的可行策略.
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