Stabilizing Nanostructured Solid Oxide Fuel Cell Cathode with Atomic Layer Deposition

被引：148

作者：

Gong, Yunhui ^{[1
]}

Palacio, Diego ^{[2
]}

Song, Xueyan ^{[2
]}

Patel, Rajankumar L. ^{[3
]}

Liang, Xinhua ^{[3
]}

Zhao, Xuan ^{[1
]}

Goodenough, John B. ^{[4
]}

Huang, Kevin ^{[1
]}

机构：

[1] Univ S Carolina, Dept Mech Engn, Columbia, SC 29201 USA

[2] W Virginia Univ, Dept Mech & Aerosp Engn, Morgantown, WV 26506 USA

[3] Missouri Univ Sci & Technol, Dept Chem & Biol Engn, Rolla, MO 65409 USA

[4] Univ Texas Austin, Texas Mat Inst, Austin, TX 78712 USA

来源：

NANO LETTERS | 2013年 / 13卷 / 09期

关键词：

Solid oxide fuel cell; atomic layer deposition; cathode; degradation; YSZ CATHODE; THIN-FILMS; SURFACE; PERFORMANCE; OXYGEN; DEGRADATION; REDUCTION; INFILTRATION; ELECTRODES; MEMBRANES;

D O I：

10.1021/nl402138w

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate that the highly active but unstable nanostructured intermediate-temperature solid oxide fuel cell cathode, La0.6Sr0.4CoO3-delta (LSCo), can retain its high oxygen reduction reaction (ORR) activity with exceptional stability for 4000 h at 700 degrees C by overcoating its surfaces with a conformal layer of nanoscale ZrO2 films through atomic layer deposition (ALD). The benefits from the presence of the nanoscale ALD-ZrO2 overcoats are remarkable: a factor of 19 and 18 reduction in polarization area-specific resistance and degradation rate over the pristine sample, respectively. The unique multifunctionality of the ALD-derived nanoscaled ZrO2 overcoats, that is, possessing porosity for O-2 access to LSCo, conducting both electrons and oxide-ions, confining thermal growth of LSCo nanoparticles, and suppressing surface Sr-segregation is deemed the key enabler for the observed stable and active nanostructured cathode.

引用

页码：4340 / 4345

页数：6

共 43 条

[1] Chemical Heterogeneities on La0.6Sr0.4CoO3-δ Thin Films-Correlations to Cathode Surface Activity and Stability [J].

Cai, Zhuhua ;

Kubicek, Markus ;

Fleig, Juergen ;

Yildiz, Bilge .

CHEMISTRY OF MATERIALS, 2012, 24 (06) :1116-1127

[2] Investigation of chemisorbed oxygen, surface segregation and effect of post-treatments on La0.8Sr0.2MnO3 powder and screen-printed layers for solid oxide fuel cell cathodes [J].

Caillol, N. ;

Pijolat, M. ;

Siebert, E. .

APPLIED SURFACE SCIENCE, 2007, 253 (10) :4641-4648

[3] Atomic layer deposition of SiO2 and TiO2 in alumina tubular membranes:: Pore reduction and effect of surface species on gas transport [J].

Cameron, MA ;

Gartland, IP ;

Smith, JA ;

Diaz, SF ;

George, SM .

LANGMUIR, 2000, 16 (19) :7435-7444

[4] Surface strontium enrichment on highly active perovskites for oxygen electrocatalysis in solid oxide fuel cells [J].

Crumlin, Ethan J. ;

Mutoro, Eva ;

Liu, Zhi ;

Grass, Michael E. ;

Biegalski, Michael D. ;

Lee, Yueh-Lin ;

Morgan, Dane ;

Christen, Hans M. ;

Bluhm, Hendrik ;

Shao-Horn, Yang .

ENERGY & ENVIRONMENTAL SCIENCE, 2012, 5 (03) :6081-6088

[5] Oxygen Reduction Kinetics Enhancement on a Heterostructured Oxide Surface for Solid Oxide Fuel Cells [J].

Crumlin, Ethan J. ;

Mutoro, Eva ;

Ahn, Sung-Jin ;

la O', Gerardo Jose ;

Leonard, Donovan N. ;

Borisevich, Albina ;

Biegalski, Michael D. ;

Christen, Hans M. ;

Shao-Horn, Yang .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2010, 1 (21) :3149-3155

[6] SURFACE-CHEMISTRY OF AL2O3 DEPOSITION USING AL(CH3)(3) AND H2O IN A BINARY REACTION SEQUENCE [J].

DILLON, AC ;

OTT, AW ;

WAY, JD ;

GEORGE, SM .

SURFACE SCIENCE, 1995, 322 (1-3) :230-242

[7] ALD for clean energy conversion, utilization, and storage [J].

Elam, Jeffrey W. ;

Dasgupta, Neil P. ;

Prinz, Fritz B. .

MRS BULLETIN, 2011, 36 (11) :899-906

[8] Atomic layer deposition of SiO2 films on BN particles using sequential surface reactions [J].

Ferguson, JD ;

Weimer, AW ;

George, SM .

CHEMISTRY OF MATERIALS, 2000, 12 (11) :3472-3480

[9] Atomic layer deposition of ultrathin and conformal Al2O3 films on BN particles [J].

Ferguson, JD ;

Weimer, AW ;

George, SM .

THIN SOLID FILMS, 2000, 371 (1-2) :95-104

[10] Electrochemically driven cation segregation in the mixed conductor La0.6Sr0.4Co0.2Fe0.8O3-δ [J].

Finsterbusch, M. ;

Lussier, A. ;

Schaefer, J. A. ;

Idzerda, Y. U. .

SOLID STATE IONICS, 2012, 212 :77-80

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