A-site deficient La0.2Sr0.7TiO3-delta anode material for proton conducting ethane fuel cell to cogenerate ethylene and electricity

作者：Liu Subiao; Behnamian Yashar; Chuang Karl T; Liu Qingxia; Luo Jing Li^*

来源：Journal of Power Sources, 2015, 298: 23-29.

DOI：10.1016/j.jpowsour.2015.08.032

• Ethane partial dehydrogenation
• BCZY
• LSTA
• Anode catalyst
• Conductivity

A site deficient La0.2Sr0.7TiO3-delta (LSTA) and a highly proton conductive electrolyte BaCe0.7Zr0.1Y0.2O3-delta (BCZY) are synthesized by using solid state reaction method. The performance of the electrolyte-supported single cell, comprised of LSTA + Cr2O3+ cu//BCZY//(La0.60Sr0.40)(0.95)Co0.20Fe0.80O3-delta (LSCF)+ BCZY, is fabricated and investigated. LSTA shows remarkably high electrical performance, with a conductivity as high as 27.78 Scm(-1) at 1150 degrees C in a 10% H-2/N-2 reducing atmosphere. As a main anode component, it shows good catalytic activity towards the oxidation of ethane, causing the power density to considerably increase from 158.4 mW cm(-2) to 320.9 mW cm(-2) and the ethane conversion to significantly rise from 12.6% to 30.9%, when the temperature increases from 650 degrees C to 750 degrees C. These changes agree well with the polarization resistance which dramatically decreases from 0.346 Omega cm(2) to 0.112 Omega cm(2). EDX measurement shows that no element diffusion exists (chemical compatibility) between anode (LSTA + Cr2O3+Cu) and electrolyte (BCZY). With these properties, the pure phase LSTA is evaluated as a high electro-catalytic activity anode material for ethane proton conducting solid oxide fuel cell (PCSOFC).

• 出版日期2015-12-1