title: Electrospun La0.8Sr0.2MnO₃ nanofibers for a high-temperature electrochemical carbon monoxide sensor.
abstract: Lanthanum strontium manganite (La(0.8)Sr(0.2)MnO(3), LSM) nanofibers have been synthesized by the electrospinning method. The electrospun nanofibers are intact without morphological and structural changes after annealing at 1050 °C. The LSM nanofibers are employed as the sensing electrode of an electrochemical sensor with yttria-stabilized zirconia (YSZ) electrolyte for carbon monoxide detection at high temperatures over 500 °C. The electrospun nanofibers form a porous network electrode, which provides a continuous pathway for charge transport. In addition, the nanofibers possess a higher specific surface area than conventional micron-sized powders. As a result, the nanofiber electrode exhibits a higher electromotive force and better electro-catalytic activity toward CO oxidation. Therefore, the sensor with the nanofiber electrode shows a higher sensitivity, lower limit of detection and faster response to CO than a sensor with a powder electrode.
authors: Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, WV 26506-6106, USA.
authors: Mingjia
authors: M
authors: Zhi
authors: Anveeksh
authors: A
authors: Koneru
authors: Feng
authors: F
authors: Yang
authors: Ayyakkannu
authors: A
authors: Manivannan
authors: Jing
authors: J
authors: Li
authors: Nianqiang
authors: N
authors: Wu
mesh_terms: D002248:Carbon Monoxide / Q000032:analysis*; D055664:Electrochemical Techniques / Q000379:methods*; D004566:Electrodes; D006358:Hot Temperature; D007811:Lanthanum / Q000737:chemistry*; D057230:Limit of Detection; D017895:Manganese Compounds / Q000737:chemistry*; D057139:Nanofibers / Q000737:chemistry*; D036103:Nanotechnology; D010316:Particle Size; D013324:Strontium / Q000737:chemistry*; D013499:Surface Properties; D015019:Yttrium; D015040:Zirconium
chemical_list: D017895:Manganese Compounds; C494384:manganite; C499362:yttria stabilized tetragonal zirconia; D015019:Yttrium; D007811:Lanthanum; D002248:Carbon Monoxide; D015040:Zirconium; D013324:Strontium