联合时频分析:以单孔中电荷穿透深度和电流空间分布为例OA北大核心CSTPCD
Joint Time-Frequency Analysis: taking Charge Penetration Depth and Current Spatial Distribution in the Single Pore as An Example
近年来,联合时频分析再次成为研究热点.超级电容器功率密度高和寿命长,但为了优化平衡功率密度和能量密度,需考虑两个关键因素:(1)多孔基质的比表面积;(2)孔内空间电解质可抵达性.本文采用联合时频分析方法,研究孔内电荷穿透深度及电流空间分布.具体开展了如下工作:(ⅰ)在复正弦电流激励下,推导单孔的时域响应和频域响应解析解,由此定义了描述电荷扩散行为的时频特征.(ⅱ)采用联合时频方法,分析了内部参数和外部参数对孔内电荷穿透率的影响,揭示了孔内电荷有限…查看全部>>
In recent years, joint time-frequency analysis has once again become a research hotspot. Supercapacitors have high power density and long service life, however, in order to balance between power density and energy density, two key factors need to be considered: (i) the specific surface area of the porous matrix; (ⅱ) the electrolyte accessibility to the intra-pore space of porous carbon matrix. Electrochemical impedance spectra are extensively used to investi…查看全部>>
王南;黄秋安;李伟恒;白玉轩;张久俊
上海大学理学院/可持续能源研究院,上海 200444上海大学理学院/可持续能源研究院,上海 200444上海大学理学院/可持续能源研究院,上海 200444上海大学理学院/可持续能源研究院,上海 200444上海大学理学院/可持续能源研究院,上海 200444
联合时频分析单孔电荷穿透深度电流空间分布半无限扩散有限长度扩散
Joint time-frequency analysisSingle poreCharge penetration depthCurrent spatial distributionSemi-infinite diffusionFinite length diffusion
《电化学（中英文）》 2024 (2)
1-22,22
国家自然科学基金项目(No.22078190)和中国国家重点研发计划项目(No.2020YFB1505802)资助
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