Cells of Daniell-type with copper-zinc electrochemical couples and sodium P-alumina solid electrolyte Received 24 December 2007 (BASE) were constructed. The cathode consisted of copper in contact with its ions (Cu/Cu2+) while zinc in Received in revised form 9 February 2008 contact with its ions (Zn/Zn2+) constituted the anode. Dimethyl sulfoxide (DMSO) containing 1 M NaBF4 Accepted 11 February 2008 Available online 15 February 2008 was used as the liquid electrolyte. The configuration of the cell constructed can be written as follows: Zn(s)/ZnCl2(DMSO)(0.1 M), NaBF4(I M)/BASE/NaBF4(1 M) CUCl2(DMSO)(0.1 M)/Cu(s) The cell was subjected to charge-discharge cycles at 100 degrees C. The BASE discs were found to be stable even Solid electrolyte after the cell was subjected to several electrochemical charge-discharge cycles. Cells were also constructed Daniell-type cell using BASE discs with porous BASE surface layers introduced to lower the interfacial resistance. Cells Low temperature with surface modified BASE exhibited a lower resistance in comparison to those using unmodified BASE. Interfacial resistance XRD and SEM analyses indicated that no detectable degradation of BASE discs occurred after cell testing. Preliminary cell tests were also conducted with NaCF3SO3 in place of NaBF4. (C) 2008 Elsevier B.V. All rights reserved.