Bloom Energy Corporation

Bloom Enery Corporation

Ian Russell

Matthias Gottmann

Darren Bawden Hickey

Stephen Couse

Ranganathan Gurunathan

David Edmonston

K R Sridhar

Dien Nguyen

Abhishek Dudhmande

Deepak Bose

Karthick Sudhan S

Bhavana Ganesh

Harald Herchen

Tad Armstrong

John Fisher

Cheng-Yu Lin

Chad Pearson

Robert M Hintz

Michael Dubuk

Arne Watson Ballantine

Martin Perry

Prasad Pmsvvsv

Michael Gasda

Michael Petrucha

Vlad Kalika

Nathan Ben Erlin

Siddharth Patel

Rajesh Gopinath

Vishal Anand Gopalakrishnan

Anilkumar Vishnuvarjula

Saravanakumar Narayanasamy

Rakesh Kumar Roy

Adrian Basharain

Badrinarayanan Thiruvengadaswamy

Jonathan Cerrona

Paul Bhangu

Subhash Chander Deswal

Pawan Patil

Ling-Hsiang Chen

Gary Walth

S Karthick Sudhan

Systems, methods, and devices of the various embodiments provide a hardware and software architecture enabling electrochemical impedance spectroscopy ('EIS') to be performed on multiple electrochemical devices, such as fuel cells, at the same time without human interaction with the electrochemical devices and to use EIS to dynamically monitor the performance of a fuel cell system. Embodiment methods may include determining an impedance of a set of fuel cells using electrochemical impedance spectroscopy, determining an ohmic polarization of the set of fuel cells from the impedance, determining a concentration polarization of the set of fuel cells from the impedance, comparing the ohmic polarization of the set of fuel cells to a first threshold, comparing the concentration polarization of the set of fuel cells to a second threshold, and initiating a corrective action when the ohmic polarization is above the first threshold or when the concentration polarization is below the second threshold.

Electrochemical impedance spectroscopy ('EIS') analyzer and method of using thereof

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 device includes at least one fuel cell column containing first and second fuel cell stacks, a fuel manifold located between the first and second fuel cell stacks and configured to provide fuel to the first and second fuel cell stacks, and a dielectric material located to electrically isolate the first and second fuel cell stacks from the fuel manifold.

Fuel cell column containing electrically insulated fuel manifold and manifold jumper

Systems and methods are provided for creating and operating a Direct Current (DC) micro-grid. A DC micro-grid may include power generators, energy storage devices, and loads coupled to a common DC bus. Power electronics devices may couple the power generators, energy storage devices, and loads to the common DC bus and provide power transfer.

Storage system controller

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 measurement device for measuring voltages along a linear array of voltage sources, such as a fuel cell stack, includes at least one movable contact or non-contact voltage probe that measures a voltage of an array element.

Measurement device for measuring voltages along a linear array of voltage sources

A method of operating a high temperature fuel cell system containing a plurality of fuel cell stacks includes operating one or more of the plurality of fuel cell stacks at a first output power while operating another one or more of the plurality of the fuel cell stacks at a second output power different from the first output power.

Increasing thermal dissipation of fuel cell stacks under partial electrical load

An interconnect for a fuel cell stack includes a first set of gas flow channels in a first portion of the interconnect, and a second set of gas flow channels in second portion of the interconnect. The channels of the first set have a larger cross sectional area than the channels of the second set.

Fuel cell stack components

A solid oxide regenerative fuel cell includes a ceramic electrolyte, a first electrode which is adapted to be positively biased when the fuel cell operates in a fuel cell mode and in an electrolysis mode, and a second electrode which is adapted to be negatively biased when the fuel cell operates in the fuel cell mode and in the electrolysis mode. The second electrode comprises less than 1 mg/cmof noble metal.

SORFC system with non-noble metal electrode compositions

Growing community of inventors

Sunnyvale, CA, United States of America

Ian Russell