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A Porphyrin Complex as a Self‐Conditioned Electrode Material for High‐Performance Energy Storage
Author(s) -
Gao Ping,
Chen Zhi,
ZhaoKarger Zhirong,
Mueller Jonathan E.,
Jung Christoph,
Klyatskaya Svetlana,
Diemant Thomas,
Fuhr Olaf,
Jacob Timo,
Behm R. Jürgen,
Ruben Mario,
Fichtner Maximilian
Publication year - 2017
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201702805
Subject(s) - energy storage , anode , electrode , power density , lithium (medication) , supercapacitor , materials science , porphyrin , cathode , specific energy , chemical engineering , electrochemistry , chemistry , optoelectronics , power (physics) , photochemistry , medicine , physics , quantum mechanics , engineering , endocrinology
Abstract The novel functionalized porphyrin [5,15‐bis(ethynyl)‐10,20‐diphenylporphinato]copper(II) (CuDEPP) was used as electrodes for rechargeable energy‐storage systems with an extraordinary combination of storage capacity, rate capability, and cycling stability. The ability of CuDEPP to serve as an electron donor or acceptor supports various energy‐storage applications. Combined with a lithium negative electrode, the CuDEPP electrode exhibited a long cycle life of several thousand cycles and fast charge–discharge rates up to 53 C and a specific energy density of 345 Wh kg −1 at a specific power density of 29 kW kg −1 . Coupled with a graphite cathode, the CuDEPP anode delivered a specific power density of 14 kW kg −1 . Whereas the capacity is in the range of that of ordinary lithium‐ion batteries, the CuDEPP electrode has a power density in the range of that of supercapacitors, thus opening a pathway toward new organic electrodes with excellent rate capability and cyclic stability.