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Experimental Confirmation of Low Surface Energy in LiCoO 2 and Implications for Lithium Battery Electrodes
Author(s) -
Maram Pardha S.,
Costa Gustavo C. C.,
Navrotsky Alexandra
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.201305375
Subject(s) - enthalpy , adsorption , lithium (medication) , materials science , electrode , condensation , surface (topology) , battery (electricity) , surface energy , analytical chemistry (journal) , thermodynamics , chemistry , composite material , organic chemistry , medicine , power (physics) , physics , endocrinology , geometry , mathematics
Water adsorption on the surface of LiCoO 2 nanoparticles was investigated. As the water coverage increases the adsorption enthalpy decreases reaching the enthalpy of water condensation (−44 kJ mol −1 ). The experimentally observed average surface energy corresponding to all facets agree well with those reported from DFT calculations. The observed low surface energy is attributed to the surface Co 3+ spin transition in nanophase LiCoO 2 .