Bloom Energy Corporation

Stackpole International Powder Metal, Ulc

Tad Armstrong

Emad El Batawi

Harald Herchen

Manoj Pillai

Matthias Gottmann

James Wilson

Martin Janousek

Michael Gasda

Dien Nguyen

Ananda H Kumar

Cheng-Yu Lin

Daniel J Darga

Arne Watson Ballantine

Avinash Verma

Vijay Radhakrishnan

Ravi Oswal

Chockkalingam Karuppaiah

Prasad Pmsvvsv

David Edmonston

Martin Perry

Ranganathan Gurunathan

Michael Petrucha

Stephen Couse

Ian Russell

Andres Leming

Padiadpu Shankara Anantha

Tulin Akin

David Weingaertner

Swaminathan Venkataraman

K R Sridhar

John Fisher

Darren Bawden Hickey

Rohith Shivanath

Robert M Hintz

Vijay Srivatsan

Rajesh Gopinath

Siddharth Patel

Zigui Lu

Cristian Savaniu

Michael Lesher

Sanchit Khurana

David N Miller

John T S Irvine

Christopher F Lee

Tyler Dawson

Chung-Dee Pong

Emily Wong

Justin Railsback

James Chang

Brandon Dawson

Deepak Bose

Vishal Anand Gopalakrishnan

Eric Petersen

Adil Ashary

Karanpal Bhangu

Saravanakumar Narayanasamy

Anilkumar Vishnuvarjula

Victor Silva

Gonghou Wang

Rakesh Kumar Roy

Jonathan Scholl

Keji Pan

Badrinarayanan Thiruvengadaswamy

Jonathan Cerrona

Brendan Ayre

Jerome A Mack

Mohamed Sharif

Joshua Baime

Ujwal Deshpande

Rajan Surve

Thuy Thanh Muhl

Ling-Hsiang Chen

Dongai Shi

Shruti Baharani

Pradhiba Mohan

Rakesh Kandiboina

Brian Bollinger

Travis Schmauss

Guoliang Xiao

Adam Byrd

Mosur K Premkumar

Techniques for fabricating a solid oxide electrolyzer cell (SOEC) including sintering an electrolyte, printing a fuel-side electrode disposed on a fuel side of the electrolyte, printing an air-side electrode disposed on an air side of the electrolyte, first sintering a combination of the electrolyte, fuel-side electrode, and air-side electrode, printing a barrier layer an air side of the electrolyte, printing a functional layer on the barrier layer, printing a collector layer on the functional layer, and second sintering a combination of the electrolyte, fuel-side electrode, air-side electrode, barrier layer, functional layer, and collector layer.

Optimized processing of electrodes for SOFC and SOEC

A solid oxide electrolyzer cell (SOEC) includes a solid oxide electrolyte, a fuel-side electrode disposed on a fuel side of the electrolyte, and an air-side electrode disposed on an air side of the electrolyte. The air-side electrode includes a barrier layer disposed on the air side of the electrolyte and including a first doped ceria material, and a functional layer disposed on the barrier layer and including an electrically conductive material and a second doped ceria material.

Solid oxide electrolyzer cell including electrolysis-tolerant air-side electrode

A fuel cell system includes a plurality of fuel cell segments, each segment having a plurality of fuel cells. The segments include a positive terminal having a positive voltage with respect to ground and a negative terminal. The fuel cell system also includes at least one component electrically connecting the negative terminal to ground, the at least one component configured to decrease a surge current through the segments.

Fuel cell stack grounding through an impedance creating element

A solid oxide electrolyzer electrolyte composition includes a scandia and ceria stabilized zirconia, containing 5 to 12 mol % scandia, 1 to 7 mol % ceria, and 80 to 94 mol % zirconia, or a yttria and ceria stabilized zirconia containing 3 to 10 mol % yttria, 1 to 6 mol % ceria, and 84 to 96 mol % zirconia.

Electrolyte materials for solid oxide electrolyzer cells

A fuel cell interconnect includes fuel ribs disposed on a first side of the interconnect and a least partially defining fuel channels, and air ribs disposed on an opposing second side of the interconnect and at least partially defining air channels. The fuel channels include central fuel channels disposed in a central fuel field and peripheral fuel channels disposed in peripheral fuel fields disposed on opposing sides of the central fuel field. The air channels include central air channels disposed in a central air field and peripheral air channels disposed in peripheral air fields disposed on opposing sides of the central air field. At least one of the central fuel channels or the central air channels has at least one of a different cross-sectional area or length than at least one of the respective peripheral fuel channels or the respective peripheral air channels.

Fuel cell interconnect optimized for operation in hydrogen fuel

A fuel cell column includes a stack of alternating fuel cells and interconnects, where the interconnects separate adjacent fuel cells in the stack and contain fuel and air channels which are configured to provide respective fuel and air to the fuel cells. a manifold plate containing a bottom inlet hole and a bottom outlet hole located in a bottom surface of the manifold plate, top outlet holes and top inlet holes formed in opposing sides of a top surface of the manifold plate, outlet channels fluidly connecting the top outlet holes to the bottom inlet hole, and inlet channels fluidly connecting the top inlet holes to the bottom outlet hole, and a mitigation structure configured to reduce stress applied to the stack due to at least one of a shape mismatch or coefficient of thermal expansion mismatch between the stack and the manifold plate.

Fuel cell column including stress mitigation structures

Methods for fabricating an interconnect for a fuel cell stack that include providing a protective layer over at least one surface of an interconnect formed by powder pressing pre-alloyed particles containing two or more metal elements and annealing the interconnect and the protective layer at elevated temperature to bond the protective layer to the at least one surface of the interconnect.

Method of fabricating an interconnect for a fuel cell stack

A solid oxide electrochemical cell includes a solid oxide electrolyte, an anode located on a first side of the solid oxide electrolyte, and a cathode located on a second side of the solid oxide electrolyte. The cathode includes lanthanum nickel ferrite.

Ni&#x2014;Fe based cathode functional layers for solid oxide electrochemical cells

A fuel cell system column includes a first terminal plate connected to a first electrical output of the column, a second terminal plate connected to a second electrical output of the column, at least one first fuel cell stack located in a middle portion of the column between the first terminal plate and the second terminal plate, and at least one electrical connection which is electrically connected to the middle portion of the column and which is configured to provide a more uniform fuel utilization across the first column.

Fuel cell system with electrical control of fuel utilization and method of operating thereof

A method of making an interconnect for a solid oxide fuel cell stack includes contacting an interconnect powder located in a die cavity with iron, the interconnect powder including a chromium and iron, compressing the interconnect powder to form an interconnect having ribs and fuel channels on a first side of the interconnect, such that the iron is disposed on tips of the ribs; and sintering the interconnect, such that the iron forms an contact layer on the tips of the ribs having a higher iron concentration than a remainder of the interconnect. A glass containing cathode contact layer having a glass transition temperature of 900&#xb0; C. or less may be located over the rib tips on the oxidant side of the interconnect.

Fuel cell interconnect with reduced voltage degradation and manufacturing method

A method of making an interconnect for a solid oxide fuel cell stack includes providing an iron rich material containing at least 25 wt. % iron into channels of a mold, providing a powder containing 4-6 wt. % Fe, 0-1 wt. % Y and balance Cr into the mold over the iron rich material containing at least 25 wt. % iron, compacting the iron rich material containing at least 25 wt. % iron and the powder comprising 4-6 wt. % Fe, 0-1 wt. % Y and balance Cr in the mold to form the interconnect, and sintering the interconnect to form a sintered interconnect having iron rich regions having an iron concentration greater than 10% in ribs of the interconnect.

Fuel cell interconnect with iron rich rib regions and method of making thereof

A solid oxide fuel cell (SOFC) electrolyte composition includes zirconia stabilized with scandia, and at least one of magnesia, zinc oxide, indium oxide, and gallium oxide, and optionally ceria in addition to the oxides above.

Doped scandia stabilized zirconia electrolyte compositions

A solid oxide fuel cell system and method, the system including a hotbox containing a fuel cell stack, a fuel supply configured to provide a fuel to the fuel cell stack, and a blower configured to provide air to the fuel cell stack. During a shutdown operation, the blower is configured to cool the fuel cell stack at a rate ranging from about 0.75&#xb0; C./min to about 3.0&#xb0; C./min, until the temperature of the fuel cell stack is reduced to a temperature at which oxidation of anodes of the fuel cell stack is substantially prevented.

SOFC system and method to decrease anode oxidation

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Burlingame, CA, United States of America

Tad Armstrong