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Volume 4
Nano Research & Applications
ISSN: 2471-9838
Page 72
&
JOINT EVENT
October 04-05, 2018 Moscow, Russia
2
nd
Edition of International Conference on
26
th
International Conference on
Advanced Nanotechnology
Materials Technology and Manufacturing Innovations
Advanced Nanotechnology 2018
& Materials-Manufacturing 2018
October 04-05, 2018
Confined chemistry and its application for lithium/sodium ion batteries
Jie Sun
Tianjin University, China
W
e have studied three kinds of electrode reaction mechanisms for lithium ion batteries: the intercalation reaction
mechanism, such as graphite anode and lithiumcobalt oxide cathode, which has a stable structure without chemical
bond breaking for lithiation, leading to a long cycling life, but its specific capacity is low due to the limited lithium-
storage sites; the alloying/conversion reaction mechanism, such as silicon, phosphorus, tin anode, sulfur cathode, which
has a high theoretical capacity, but decays rapidly because of its large volume expansion for lithiation; the deposition/
growth mechanism, such as lithiummetal anode, which tends to form dendrites with no host material, resulting in many
problems of the irreversible reaction with electrolyte, poor cycle performance, and short circuit. In summary, the reaction
mechanism of the electrode materials determines its intrinsic characteristics and inherent defects, which is difficult to
overcome. Aiming at the above problems, we have designed and constructed a series of micro reactors at the molecular
scale, so that the alloying or deposition reaction mechanism could be confined in this space and transforms into a similar
intercalation reaction mechanism, contributing to improving its structural stability and electrochemical performance.
Biography
Jie Sun has completed her PhD in Chemical Engineering and Technology at Beijing University of Chemical Technology and Postdoctoral studies at
Stanford University. She has worked as a Professor of Chemical Engineering and Technology at Tianjin University. She has published more than 30
papers in reputed journals.
jies@tju.edu.cnJie Sun, Nano Res Appl 2018, Volume 4
DOI: 10.21767/2471-9838-C5-021