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Defect-controlled formation of triclinic Na2CoP2O7 for 4 V sodium-ion batteries

Cited 69 time in Web of Science Cited 77 time in Scopus
Authors

Kim, Heejin; Park, Chan Sun; Choi, Jang Wook; Jung, Yousung

Issue Date
2016-06
Publisher
John Wiley & Sons Ltd.
Citation
Angewandte Chemie - International Edition, Vol.55 No.23, pp.6662-6666
Abstract
Simple defects such as sodium deficiencies can induce the selective synthesis of triclinic Na2CoP2O7, providing an increase in energy density of more than 40% compared to the stoichiometric polymorph that is preferentially formed under the commonly used synthesis conditions. Such a significant improvement, which was achieved just by changing the crystal structure, suggests that controlling the polymorphism could be an effective and facile method for developing high-performance electrode materials and that defects can play a remarkable role in this process.
ISSN
1433-7851
URI
https://hdl.handle.net/10371/164704
DOI
https://doi.org/10.1002/anie.201601022
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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