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In-Situ Thermal Battery Discharge using NiS 2 as a Cathode Material

DOI: 10.1002/celc.201700095 DOI Help

Authors: Julia L. Payne (University of St Andrews) , Julia D. Percival (AWE) , Kyriakos Giagloglou (University of St Andrews) , Christina J. Crouch (University of St Andrews) , George M. Carins (University of St Andrews) , Ronald I. Smith (ISIS Facility) , Robert Comrie (MSB Ltd) , Richard K. B. Gover (AWE) , John T. S. Irvine (University of St Andrews)
Co-authored by industrial partner: Yes

Type: Journal Paper
Journal: Chemelectrochem , VOL 161

State: Published (Approved)
Published: April 2017
Diamond Proposal Number(s): 13050

Open Access Open Access

Abstract: NiS2 is a cathode material found in primary batteries which operate at high temperature. Herein we report the in situ battery discharge study of a thermal battery cell which uses NiS2 as a cathode, using simultaneous collection of powder neutron diffraction data and electrochemical data. Five different regions were observed upon battery discharge and the evolution of nickel sulfide phases has been studied. Four different nickel-containing phases are observed during discharge (NiS2, NiS, Ni3S2 and Ni). A new discharge mechanism has been proposed which does not include Ni7S6. Multiphase quantitative Rietveld refinement has allowed the percentages of the phases to be monitored during discharge. High intensity synchrotron powder X-ray diffraction has been used to study the resulting phases present in the cathode after battery discharge.

Journal Keywords: Cathodes; electrochemistry; nickel disulfide; neutron diffraction; thermal batteries

Subject Areas: Chemistry, Energy

Instruments: I11-High Resolution Powder Diffraction

Added On: 11/05/2017 11:53


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