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Volume 7, Issue 2 (Suppl)
J Phys Chem Biophys, an open access journal
ISSN: 2161-0398
Electrochemistry 2017
July 10-11, 2017
Electrochemistry
3
rd
International Conference on
July 10-11, 2017 Berlin, Germany
Rechargeable batteries based on chloride ion transfer
Xiangyu Zhao
Nanjing Tech University, China
A
lternative battery chemistries beyond lithium ion and using abundant electrode materials have been developed. Chloride ion
battery (CIB) is a new rechargeable battery based on Cl- anion transfer. This battery shows a variety of electrochemical couples
with theoretical energy densities up to 2500 Wh l
-1
, which is superior to those of conventional lithium ion batteries. Abundant
material resources such as Mg, Ca, Na and metal chlorides (e.g., FeCl
3
, CuCl
2
and MgCl
2
) can be sustainable electrode candidates. The
CIB includes a metal chloride/metal electrochemical couple and an ionic liquid electrolyte allowing chloride ion transfer, as reported
in the proof-of-principle study of CIB operated at room temperature. The problem is that the metal chloride cathode can react with
chloride ions in the electrolyte, leading to the formation of soluble complex anion. This electrode dissolution and the subsequent
shuttle would limit the use of metal chloride cathode in the liquid electrolyte system. Metal oxychlorides with higher stability have
been proved to be new cathode materials for CIBs. Metal oxychloride/metal systems could also show high theoretical energy densities
during the chloride ion transfer. By carbon incorporation in the cathode or optimization of electrolyte composition, more than 70%
of the theoretical discharge capacity of single-electron cathode such as FeOCl or VOCl could be delivered. A preliminary study on
the multi-electron VOCl2 cathode was also reported in the electrode system using VOCl as cathode and Mg/MgCl2 composite
as anode. Besides inorganic electrode materials in rechargeable batteries, organic electrode materials, in particular polymers, have
been attracting much attention, due to their advantages of good electrochemical performance, high stability, abundant chemical
elements, structural tunability and designing flexibility. Chloride ion doped polymer materilals have been studied and developed as
new cathodes for chloride ion batteries. Reversible reversible redox reactions and superior cycling stability were obtained.
Biography
Xiangyu Zhao has his expertise in Electrochemical Energy Storage including Electrochemical Hydrogen Storage and Rechargeable Batteries such as chloride ion
batteries, lithium ion batteries and magnesium batteries. He received his PhD in Materials Science from the Nanjing Tech University in 2010. He was awarded by
the Guest Scientist Fellowship and has worked at Karlsruhe Institute of Technology. He is the (co-)author of 9 patent applications and has more than 60 papers
published in international journals such as
Angew. Chem. Int. Ed., Adv. Energy Mater and Energy Environ. Sci.
xiangyu.zhao@njtech.edu.cnXiangyu Zhao, J Phys Chem Biophys 2017, 7:2(Suppl)
DOI: 10.4172/2161-0398-C1-019