Electrochemical Impedance and its Applications in Energy-Storage Systems

被引：119

作者：

Qu, Deyang ^{[1
]}

Wang, Gongwei ^{[1
]}

Kafle, Janak ^{[1
]}

Harris, Joshua ^{[1
]}

Crain, Logan ^{[1
,2
]}

Jin, Zhihong ^{[2
]}

Zheng, Dong ^{[1
]}

机构：

[1] Univ Wisconsin Milwaukee, Coll Appl Sci & Engn, Dept Mech Engn, Milwaukee, WI 53211 USA

[2] Johnson Controls Inc, Power Solut Div, 5757 N Green Bay Ave, Milwaukee, WI 53201 USA

来源：

SMALL METHODS | 2018年 / 2卷 / 08期

关键词：

electrochemical impedance; energy-storage systems; equivalent circuit; porous electrodes; transmission-line models; LITHIUM-ION BATTERIES; STATE-OF-CHARGE; GAS-EVOLVING ELECTROCATALYSTS; PROTON DIFFUSION PROCESS; REAL-AREA DETERMINATION; ELECTRICAL DOUBLE-LAYER; MEMBRANE FUEL-CELLS; AC-IMPEDANCE; MANGANESE-DIOXIDE; ACTIVATED CARBONS;

D O I：

10.1002/smtd.201700342

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electrochemical impedance is a powerful tool in the investigation of electrochemical systems. It obtains kinetic information of an interfacial process in the vicinity of a stable state by applying a low-amplitude sinusoidal potential-modulation signal on the stable (may not be completely at equilibrium) potential, and from the responding current signal, the kinetic information can be obtained. Here, the fundamental impedance responses of the common electrochemical processes, e.g., double-layer, charge transfer, and diffusion are introduced with respect to energy-storage systems. The impedance response of porous electrodes and the transmission-line model are emphasized. Numerical fitting and simulation through an equivalent circuit are reviewed with the examples of the electrodes used in batteries, supercapacitors, and fuel cells.

引用

页数：27

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