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Zero‐Strain Intercalation Cathode for Rechargeable Li‐Ion Cell
Author(s) -
Cho Jaephil,
Kim Yong Jeong,
Kim TaeJoon,
Park Byungwoo
Publication year - 2001
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 - 10.1002/1521-3773(20010917)40:18<3367::aid-anie3367>3.0.co;2-a
Subject(s) - materials science , intercalation (chemistry) , cathode , electrochemistry , coating , fracture toughness , ion , lithium (medication) , composite material , strain (injury) , chemical engineering , electrode , inorganic chemistry , chemistry , medicine , organic chemistry , engineering , endocrinology
No strain, big gain : the possibility of producing more‐efficient rechargeable lithium batteries is offered by a zero‐strain LiCoO 2 cathode material produced by coating particles with thin films of high‐fracture‐toughness oxides. This method suppresses the changes in the lattice constant during electrochemical cycling and thereby suppresses phase transitions (see scheme). The order of capacity retention correlates with the fracture toughness of the coating thin‐film oxides. The ZrO 2 ‐coated sample does not show any noticeable capacity fading over 70 electrochemical cycles.