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Controlled Electrochemical Charge Injection to Maximize the Energy Density of Supercapacitors
Author(s) -
Weng Zhe,
Li Feng,
Wang DaWei,
Wen Lei,
Cheng HuiMing
Publication year - 2013
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201209259
Subject(s) - supercapacitor , electrochemistry , electrode , energy density , voltage , materials science , lithium (medication) , power density , energy storage , carbon fibers , ion , energy (signal processing) , charge density , charge (physics) , optoelectronics , nanotechnology , chemistry , electrical engineering , power (physics) , engineering physics , composite material , physics , composite number , engineering , thermodynamics , medicine , organic chemistry , endocrinology , quantum mechanics
Maximized energy density : Controlled electrochemical charge injection (ECI) can be used for maximizing the energy density of supercapacitors (SCs). The electrode potential is tuned by the surface chemical structure of the electrode material to increase both the working voltage and the specific capacity of the SCs. As a result, the energy density of carbon SCs is significantly improved close to the level of lithium‐ion batteries (see picture).