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Feasibility Study of a Planar‐type Sodium–Nickel Chloride Battery
Author(s) -
Kim SeonMin,
Lee SangMin,
Jung Keeyoung,
Park YoonCheol,
Cho Namung,
Kim HyunSoo
Publication year - 2016
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.10756
Subject(s) - cathode , anode , battery (electricity) , electrochemistry , materials science , sodium , nickel , chloride , coating , chemical engineering , membrane , carbon fibers , composite material , chemistry , metallurgy , electrode , power (physics) , physics , biochemistry , quantum mechanics , composite number , engineering
The sodium–nickel chloride (Na/ NiCl 2 ) battery has many advantages over the Na–S battery, such as a higher operating voltage, ease of assembly in the discharge state, less corrosive cathode materials, a safer cell failure mode, and better tolerance against overcharging. In this study, to solve the problem of low electrical conductivity, a planar‐type Na/ NiCl 2 cell was designed by optimizing the cathode through the use of both Ni mesh and excess Ni powder. A β″‐ Al 2 O 3 membrane, which plays a role in the conducting path for Na + ions, was glass‐sealed and attached to a thicker external α″‐ Al 2 O 3 ring. For carbon coating, the anode side of the membrane was covered with carbon paste. The prototype cell was operated successfully and showed excellent electrochemical characteristics in terms of high Na utilization and stable charge/discharge cycleability.