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通过接口工程设计的Bi₂O₃/N-化碳异构结构,使先进的储能能能产生协同效应

Yuan Wang¹, Zhongtao Shang¹, Tao Zhang²

¹Low-carbon Technology & Chemical Reaction Engineering Lab, College of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China. ysj@scu.edu.cn.

|July 21, 2025

概括

通过接口工程设计的氧化/化碳异构结构显示了提高和离子储存的电化学性能. 这种金属氧化物/碳纳米复合材料设计提高了储能能力.

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:

金属氧化物/碳纳米复合材料对电化学能量存储具有前景.
了解协同作用机制是设计高性能材料的关键.

研究的目的:

设计和研究一个接口工程的Bi2O3/N-doped碳异构结构 (Bi2O3@NPCF),用于增强K+和Na+存储.
为了阐明Bi2O3/N-化碳接口的协同效应.

主要方法:

密度函数理论 (DFT) 计算来分析电子结构和接口效应.
对Bi2O3@NPCF作为K+和Na+储存的电极材料进行电化学测试.
组装和测试一个不对称的水性超级电容器装置.

主要成果:

DFT揭示了在Bi2O3/N-化碳接口的内置电场和优化的带结构,增强了电荷转移和氧化还原动力学.
Bi2O3@NPCF在KOH和NaOH电解质中表现出优异的电化学性能,这是由于促进离子扩散和表面储存的协同相互作用.
一个不对称的超级电容器实现了高能量密度 (128.9μWh cm-2) 和良好的稳定性.

结论:

用Bi2O3/N合的碳异构结构的接口工程显著增强了电化学能量储存.
Bi2O3@NPCF是用于水性K+和Na+离子储存的高效电极材料.
开发的纳米复合材料显示了先进超级电容应用的潜力.

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