含有N的多孔碳基MnO复合材料作为离子电池的高容量和稳定性的阳极
Yi Cheng1, Shiyue Li2, Wenbin Luo1,3
1Hangzhou Institute of Advanced Studies, Zhejiang Normal University, 1108 Gengwen Road, Hangzhou 311231, China.
Molecules (Basel, Switzerland)
|June 27, 2024
概括
这项研究开发了由生物质制成的多孔N含氧化物 (MnO) 复合材料,用于离子电池. 这些材料提供增强的导电性和稳定性,实现高容量和长周期寿命,用于先进的能量存储.
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
- 储能 储能 储能 储能 储能 储能
背景情况:
- 氧化 (MnO) 是离子电池 (LIB) 的一个有前途的阳极材料,因为它具有很高的特定容量.
- 低电导率和结构稳定性不佳阻碍了MnO阳极的实际应用.
- 来自生物质的碳材料提供了一种可持续且具有成本效益的方法来提高电极性能.
研究的目的:
- 设计和合成有孔的含有N的MnO复合材料,使用基于化学活性的自模方法.
- 通过利用生物质衍生碳的独特纳米结构和异构原子兴奋剂来提高MnO阳极的电化学性能.
- 调查兴奋剂对电导率和电解质可湿性的影响,以提高离子传输.
主要方法:
- 使用自建模的方法,使用化学激活的震作为多孔碳的前体.
- 合成含有N的MnO复合物,通过将Mn离子与活性震衍生的碳协调.
- 描述已制备的复合材料的结构,形态和电化学特性.
主要成果:
- 由此产生的多孔含N的MnO复合材料具有1000mAhg-1.1的高可逆特异容量.
- 这些复合材料表现出极好的循环稳定性,在100 mA g-1.1 的200 个循环后,容量保持率为 98%,在 100 mA g-1.1 的 200 个循环后,容量保持率为 98%.
- 长周期表现异常,在高电流密度下1000个周期后保持99%的容量.
结论:
- 开发的生物质衍生N含孔隙MnO复合材料为构建高性能LIB阳极提供了有效的策略.
- 孔隙结构和兴奋剂显著增强Li+扩散,电子导电性和结构稳定性.
- 这种方法为先进的储能材料提供了可持续和可扩展的途径.
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