High performance anode-supported proton ceramic fuel cell elaborated by wet powder spraying Gilles Taillades * , Paul Pers, Visot Mao, M  elanie Taillades ICGM UMR 5253, Aggregates, Interfaces and Materials for Energy, Universit e de Montpellier, Place Eug ene Bataillon, 34095 Montpellier cedex 5, France article info Article history: Received 25 November 2015 Accepted 10 May 2016 Available online xxx Keywords: Protonic ceramic fuel cell Intermediate temperature SOFC Wet powder spraying BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3  d abstract Wet Powder Spraying (WPS) is a well-known method of deposition recently used for elaboration of dense electrolytes or porous electrodes thin films in solid oxide fuel cells. In this work, WPS has been used to deposit the electrolyte and cathode materials of a proton conducting ceramic fuel cell (PCFC) operating at intermediate temperature. A cell with a dense 4 mm thick BaZr 0.1 Ce 0.7 Y 0.1 Yb 0.1 O 3  d (BZCYYb) electrolyte, a Ba 0.5 Sr 0.5 Co 0.8 Fe 0.2 0 3  d e BZCYYb (BSCF-BZCYYb) composite cathode and a porous Ni-electrolyte cermet was developed and characterized. The electrolyte and the cathode materials were successfully deposited by WPS on an anode support of 40 mm in diameter. High open-circuit voltages (OCV > 1 V) were observed with this cell, and maximum power densities of 418, 532 and 634 mW cm 2 were obtained at 600, 650 and 700  C respectively. The results demonstrated that WPS is an attractive technique, suitable for up-scaling planar anode supported PCFC. © 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. Introduction Solid Oxide Fuel Cells (SOFCs) based on an oxygen ion con- ducting electrolyte remain very attractive with respect to their high-energy efficiency, modularity and excellent fuel flexibility. Due to the high activation energy for oxygen ion conduction, SOFCs normally operate at temperatures above 750  C, this high operating temperature accelerates corrosion, limits the long- term durability and increases the cost of materials. Conse- quently, significant efforts have been made to lower the oper- ation temperature of SOFC and Proton Ceramic Fuel Cells (PCFCs) have attracted great interest in the last few years for fuel cell operation in the 400e600  C temperature range [1,2]. How- ever, the performance of PCFCs is lower than that of SOFCs and research has focused on the development of advanced elec- trolyte materials as a strategy to increase PCFC performance. The most investigated high temperature proton con- ducting electrolytes currently are perovskites (ABO 3 ) where the tetravalent element (B) is partially substituted by a triva- lent element which generates protonic defects on reaction with water vapour. The main challenge for these materials is to achieve high proton conductivity while preserving chemi- cal stability in the fuel cell environment. Yttrium doped barium cerates (BCY) are considered as having highest proton conductivity (~10 2 S cm 1 at 600  C) but they suffer from poor chemical stability under acidic (CO 2 ) and/or wet atmospheres [3] while yttrium doped barium zirconate (BZY) shows good chemical stability but its proton conductivity (~10 3 S cm 1 at 600  C) is an order of magnitude lower than that of BCY because of high grain boundary resistance [4]. In order to in- crease stability of BCY compounds, solid solutions of BCY and BZY (BCZY) have been widely investigated [5], as well as cor- eeshell arrangements [6], and shown to exhibit both sufficient * Corresponding author. Tel.: þ33 467 144620; fax: þ33 467 143304. E-mail address: gilles.taillades@umontpellier.fr (G. Taillades). Available online at www.sciencedirect.com ScienceDirect journal homepage: www.elsevier.com/locate/he international journal of hydrogen energy xxx (2016) 1 e7 http://dx.doi.org/10.1016/j.ijhydene.2016.05.094 0360-3199/© 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved. Please cite this article in press as: Taillades G, et al., High performance anode-supported proton ceramic fuel cell elaborated by wet powder spraying, International Journal of Hydrogen Energy (2016), http://dx.doi.org/10.1016/j.ijhydene.2016.05.094