电容
库仑阻塞
材料科学
双层电容
电子转移
理想(伦理)
超级电容器
纳米技术
机制(生物学)
储能
微分电容
化学物理
电子
电极
物理
电化学
量子力学
电压
化学
功率(物理)
物理化学
哲学
晶体管
认识论
介电谱
作者
Yee Wei Foong,Sazzad Hossain,Sergey V. Sukhomlinov,Kirk H. Bevan
标识
DOI:10.1021/acs.jpcc.0c07862
摘要
In this work, we provide a theoretical analysis of quantized capacitance (also referred to as solvated Coulomb blockade) as a pseudocapacitive energy storage mechanism. In particular, we examine how redox species exhibiting quantized capacitance might be engineered to satisfy two basic criteria in the design of an “ideal” pseudocapacitive energy storage mechanism: (1) a near-rectangular voltammetric profile which mimics that of double-layer capacitance and (2) a linear rise in the pseudocapacitive current with respect to the voltammetric scan rate. It is demonstrated that nanoparticles exhibiting quantized capacitance may satisfy the first criterion by tailoring their charging and reorganization energies. It is also shown that the second criterion can be satisfied so long as the voltammetric scan rate does not exceed the electron-transfer rate. By formulating a comprehensive theoretical framework for understanding the electron-transfer properties of quantized capacitance, we arrive at a general phenomenological description of how pseudocapacitive properties might be practically engineered through this mechanism.
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