Reference Work Entry

Encyclopedia of Microfluidics and Nanofluidics

pp 2282-2289

Date:

Modeling of Supercapacitors

  • Guang FengAffiliated withSchool of Energy and Power Engineering, Huazhong University of Science and Technology Email author 
  • , Rui QiaoAffiliated withDepartment of Mechanical Engineering, Clemson University
  • , Peter T. CummingsAffiliated withDepartment of Chemical and Biomolecular Engineering, Vanderbilt University

Synonyms

Electrical double-layer capacitor (EDLC); Electrochemical capacitor (EC); Simulation of supercapacitors; Ultracapacitors

Definition

A supercapacitor stores energy in electrical double layers at electrode/electrolyte interfaces. In molecular modeling of supercapacitors, the structure of electrical double layers is resolved at atomistic scale to determine the capacitance of supercapacitors as a function of electrolyte/electrode properties and operating conditions.

Overview

Supercapacitors, also called electrical double-layer capacitors (EDLCs) or ultracapacitors, have attracted significant attention in recent years as a new class of electrical energy storage devices. Supercapacitors have much higher energy density than conventional capacitors and much higher power density than most batteries. As such, they complement these energy storage devices in many applications. Typically, a supercapacitor consists of electrodes, electrolytes, a membrane separator, and current collectors. When a ...

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