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Shape Effect on Electrochemical Energy Storage Performance of Nanosized Copper Germanium Selenide Particles
Author(s) -
Ganesan Vinoth,
Kim Jinkwon
Publication year - 2021
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.12249
Subject(s) - materials science , germanium , electrochemistry , copper , nanomaterials , selenide , capacitance , chemical engineering , nanoparticle , electrical resistivity and conductivity , conductivity , colloid , energy storage , nanotechnology , metallurgy , electrode , chemistry , selenium , silicon , electrical engineering , engineering , power (physics) , physics , quantum mechanics
Colloidal Cu 2 GeSe 3 nanosheets (NSs) (0.5–1.5 μm) and Cu 2 GeSe 3 nanoparticles (NPs) (8–10 nm) were synthesized for electrochemical performance comparison. The galvanostatic measurements show the maximum capacitance of 118 F/g and 77 F/g for Cu 2 GeSe 3 NSs and NPs, respectively. Each type of nanomaterials exhibits shape dependence in its capacitance reduction behavior with increasing current density due to differences in surface area and electrical conductivity. The cyclic stability tests for Cu 2 GeSe 3 NSs showed a capacity retention of about 90% after 1000 cycles.