Bloom Energy Corporation

Ion America Corporation

Bloom Enery Corporation

Matthias Gottmann

James F McElroy

Arne Watson Ballantine

K R Sridhar

Tad Armstrong

Martin Perry

Swaminathan Venkataraman

Stephen Couse

David Weingaertner

Dien Nguyen

Fred Mitlitsky

Ian Russell

John Finn

Chockkalingam Karuppaiah

Michael Petrucha

David Edmonston

Darren Bawden Hickey

Emad El Batawi

William David Lyle

Michael Gasda

Harald Herchen

James Wilson

Chad Pearson

Manoj Pillai

Nilanjana Basu

James Smith

Tulin Akin

Navaneetha Krishnan

Prasad Pmsvvsv

John Fisher

Daniel J Darga

Jayakumar Krishnadass

Vijay Srivatsan

Ananda H Kumar

Ranganathan Gurunathan

Cheng-Yu Lin

Martin Janousek

Vlad Kalika

Padiadpu Shankara Anantha

Vijay Radhakrishnan

Andy Ta

Deepak Bose

Ram Ramanan

Ryan Hallum

Kurt Risic

Patrick Muhl

Ramesha Guntanur

Paturi Balaji Narasimha Prasad

Sanjiv Kapoor

Nathan Ben Erlin

Greg Young

Chung-Dee Pong

Neil Ide

Kr Sridhar

Adil Ashary

Michael Lesher

Gonghou Wang

Carlton Cottuli

Tyler Dawson

Victor Silva

James Chang

Michael Groesch

Ananda Sundararajan

Sachin Parhar

Virpaul Bains

Jonathan Cerrona

Mohamed Sharif

Joshua Baime

Jakob Hilton

Rajan Surve

Pradhiba Mohan

Rakesh Kandiboina

James Frederick Mcelroy

John E Finn

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

Systems, devices, and methods for electrolysis at very large scale (e.g., exceeding 100 megawatts (MW), and at gigawatt (GW) scale having a solid oxide electolyzer cell (SOEC) system including one or more SOEC columns, and one or more heat exchangers, each of the heat exchangers configured to receive input stream that is used to heat respective SOEC columns, wherein each of the heat exchangers is located along respective SOEC columns such that the input steam exiting the heat exchanger is directed towards adjacent SOEC columns.

SOEC integration with ultra hot steam

A fuel cell system includes at least one of plural electrochemical pump separators to separate carbon dioxide from a fuel exhaust stream or a combination of a gas separator and a fuel exhaust cooler located outside a hotbox.

Solid oxide fuel cell system with hydrogen pumping cell with carbon monoxide tolerant anodes and integrated shift reactor

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

Various hot box fuel cell system components are provided, such as heat exchangers, steam generator and other components.

SOFC hot box components

Methods for fabricating an interconnect for a fuel cell system that include forming a metal powder into a preform structure, positioning the preform structure in a die cavity of a press apparatus, and compressing the preform structure in the press apparatus to form the interconnect. Further embodiments include use of thin inserts in the die cavity to provide reduced permeability and/or including filler material in the die cavity.

Pre-formed powder delivery to powder press machine

A fuel cell assembly includes a fuel cell stack including a plurality of fuel cells, an incoming oxidizing gas flow path configured to deliver an oxidizing gas to the plurality of fuel cells, and a chromium-getter material located in the incoming oxidizing flow path. A fuel cell includes an electrolyte, a cathode electrode on a first side of the electrolyte, an anode electrode on a second side of the electrolyte, and a chromium-getter material on the cathode electrode.

Systems and methods for suppressing chromium poisoning in fuel cells

A method of operating a solid oxide fuel cell (SOFC) system which contains a plurality of SOFCs having cermet anode electrodes includes operating the SOFC system above 760&#xb0; C. to generate electricity and intentionally oxidizing the cermet anode electrodes at a temperature of at least 760&#xb0; C. when the SOFC system stops operating to generate electricity.

High temperature air purge of solid oxide fuel cell anode electrodes

A method for testing a fuel cell stack includes providing a fluid, such as an ammonia-containing fluid, in a first reactant flow path in a first portion of the fuel cell stack, detecting the presence of the fluid using a detector, such as an ammonia detector, positioned within or adjacent to a second portion of the fuel cell stack that is separated from the first portion of the fuel cell stack and determining the presence of a defect in the stack based on detecting the presence of the fluid. Further embodiments relate to testing a fuel cell stack using a microphone that detects an audio signal indicative of a stack defect.

Methods and systems for detecting defects in a fuel cell stack

Systems and methods for sintering and conditioning fuel cell stacks utilizing channel guides, baffles, and internal compression systems are provided. Sintering and conditioning may be performed utilizing a fuel cell column cartridge assembly and fuel cell stacks may be sintered and conditioned at the system level during the same annealing cycle on the same support.

Methods and systems for fuel cell stack sintering and conditioning

A spring compression assembly is configured to apply a load to a stack of electrochemical cells. The assembly includes a ceramic leaf spring, a tensioner configured to apply pressure to a first side of the spring and a bottom plate located on a second side of the spring opposite the first side of the spring. The bottom plate is configured to transfer a load from the spring to the stack of electrochemical cells.

Fuel cell stack compression devices and methods

Systems and methods for fuel cell stack part serialization and tracking. In an embodiment, a barcode may be applied to a fuel cell stack part which may identify the fuel cell stack part. In an embodiment, the barcode may be applied as ink on a green fuel cell stack part prior to sintering. In an embodiment, a portion of a fuel cell stack part may be imaged and pattern recognition techniques may be utilized to identify the fuel cell stack part based on the unique features of fuel cell stack part. In an embodiment, portion of a fuel cell stack part may be measured to generate one or more series of unique volume/area values and one or more series of unique volume/area values may be utilized to identify the fuel cell stack part.

Serialization of fuel cell components

Growing community of inventors

Sunnyvale, CA, United States of America

Matthias Gottmann