公开(公告)号：US11133511B2

公开(公告)日：2021-09-28

申请号：US16162841

申请日：2018-10-17

Applicant: BLOOM ENERGY CORPORATION

Inventor： Mosul K. Premkumar ,  Vijay Radhakrishnan ,  Rahul Kulkarni ,  Padiadpu Shankara Anantha

IPC: H01M8/0226 ,  H01M8/00 ,  H01M8/0208 ,  H01M8/0271 ,  H01M8/0243 ,  H01M8/0215 ,  H01M8/0228 ,  H01M8/2425 ,  H01M8/124

Abstract: A buffer layer between an interconnect and an electrolyte of a solid oxide fuel cell, the buffer layer having a gradient in coefficient of thermal expansion (CTE), wherein the buffer layer minimizes electrolyte damage due to a difference in CTE between the interconnect and electrolyte.

公开(公告)号：US11545687B1

公开(公告)日：2023-01-03

申请号：US16162900

申请日：2018-10-17

Applicant: BLOOM ENERGY CORPORATION

Inventor： Karthick Sudhan ,  Amit Nawathe ,  Abhishek Dudhmande ,  Vijay Radhakrishnan ,  Padiadpu Shankara Anantha

IPC: H01M8/04298 ,  H01M8/0662 ,  H01M8/04089 ,  H01M8/2465

Abstract: A fuel cell system performance recovery method includes applying a DC current load pulse waveform to one or more of the fuel cells for a recovery period sufficient to desorb a contaminant from the one or more fuel cells.

公开(公告)号：US10680251B2

公开(公告)日：2020-06-09

申请号：US15915281

申请日：2018-03-08

Applicant: BLOOM ENERGY CORPORATION

Inventor： Michael Gasda ,  Emad El Batawi ,  Tad Armstrong ,  Vijay Radhakrishnan ,  Jonathan Scholl

IPC: H01M4/90 ,  H01M4/86 ,  H01M8/124 ,  H01M8/12

Abstract: A solid oxide fuel cell, system including the same, and method of using the same, the fuel cell including an electrolyte disposed between an anode and a cathode. The anode includes a first layer including a metallic phase and a ceramic phase, and a second layer including a metallic phase. The metallic phase of the second layer includes a metal catalyst and a dopant selected from Al, Ca, Ce, Cr, Fe, Mg, Mn, Nb, Pr, Ti, V, W, or Zr, any oxide thereof, or any combination thereof. The second layer may also include a ceramic phase including ytterbia-ceria-scandia-stabilized zirconia (YCSSZ).

公开(公告)号：US11973231B2

公开(公告)日：2024-04-30

申请号：US18347953

申请日：2023-07-06

Applicant: BLOOM ENERGY CORPORATION

Inventor： Srikanth Ranganathan ,  Vijay Radhakrishnan ,  Vaibhav Nirgude

IPC: H01M4/88 ,  H01M4/86 ,  H01M4/90 ,  H01M8/1004 ,  H01M8/241

CPC classification number: H01M4/8803 ,  H01M4/8657 ,  H01M4/8835 ,  H01M4/8875 ,  H01M4/8882 ,  H01M4/9058 ,  H01M8/1004 ,  H01M8/241 ,  H01M2004/8684 ,  H01M2004/8689 ,  H01M2300/0068

Abstract: A membrane electrode assembly (MEA) includes an ionically-conductive proton exchange membrane. Further, the MEA includes an anode contacting a first side of the membrane. The anode includes an anode gas diffusion layer (GDL). Further, the anode includes a first anode catalyst layer containing first catalyst particles, a hydrophobic polymer bonding agent, and a first ionomer bonding agent that lacks functional chains on a molecular backbone. The anode also includes a second anode catalyst layer containing second catalyst particles and a second ionomer bonding agent that includes functional chains on a molecular backbone. The MEA also includes a cathode contacting a second side of the membrane and comprising third catalyst particles and a cathode GDL.

公开(公告)号：US11411233B2

公开(公告)日：2022-08-09

申请号：US16213480

申请日：2018-12-07

Applicant: BLOOM ENERGY CORPORATION

Inventor： Karthick Sudhan Shanmugam ,  Abhishek Dudhmande ,  Amit Nawathe ,  Padiadpu Shankara Anantha ,  Vijay Radhakrishnan

IPC: H01M8/04 ,  H01M8/04664 ,  H01M8/0662 ,  H01M8/04537 ,  H01M8/04858 ,  H01M8/04791 ,  H01M8/04746

Abstract: A fuel cell system and method, the system including power generating fuel cells disposed in a stack, each power generating fuel cell including an anode, a cathode, and an electrolyte, a sensing fuel cell including an anode, a cathode, and an electrolyte, and a fuel processor configured to purify a fuel provided to the power generating fuel cells and the sensing fuel cell. The anode of the sensing fuel cell is thinner than the anodes of the power generating fuel cells.

公开(公告)号：US12300823B2

公开(公告)日：2025-05-13

申请号：US17744710

申请日：2022-05-15

Applicant: BLOOM ENERGY CORPORATION

Inventor： Srikanth Ranganathan ,  Vijay Radhakrishnan ,  Vaibhav Nirgude

IPC: H01M4/88 ,  H01M4/86 ,  H01M4/90 ,  H01M8/1004 ,  H01M8/241

Abstract: A membrane electrode assembly (MEA) includes an ionically-conductive proton exchange membrane, an anode contacting a first side of the membrane and a cathode contacting a second side of the membrane and including third catalyst particles and a cathode GDL. The anode includes an anode gas diffusion layer (GDL), a first anode catalyst layer containing first catalyst particles, a hydrophobic polymer bonding agent, and a first ionomer bonding agent that lacks functional chains on a molecular backbone, and a second anode catalyst layer containing second catalyst particles and a second ionomer bonding agent that includes functional chains on a molecular backbone.

公开(公告)号：US10950875B1

公开(公告)日：2021-03-16

申请号：US16169275

申请日：2018-10-24

Applicant: BLOOM ENERGY CORPORATION

Inventor： Vijay Radhakrishnan ,  Manoj Pillai ,  Tad Armstrong ,  Padiadpu Shankara Anantha

IPC: H01M8/04014 ,  H01M8/04701 ,  H01M8/04228 ,  H01M8/12 ,  H01M4/90 ,  H01M8/04828 ,  H01M8/124

Abstract: 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° C./min to about 3.0° 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.

公开(公告)号：US20200185741A1

公开(公告)日：2020-06-11

申请号：US16213480

申请日：2018-12-07

Applicant: BLOOM ENERGY CORPORATION

Inventor： Karthick Sudhan Shanmugam ,  Abhishek Dudhmande ,  Amit Nawathe ,  Padiadpu Shankara Anantha ,  Vijay Radhakrishnan

IPC: H01M8/04664 ,  H01M8/0662 ,  H01M8/04537 ,  H01M8/04791 ,  H01M8/04746 ,  H01M8/04858

Abstract: A fuel cell system and method, the system including power generating fuel cells disposed in a stack, each power generating fuel cell including an anode, a cathode, and an electrolyte, a sensing fuel cell including an anode, a cathode, and an electrolyte, and a fuel processor configured to purify a fuel provided to the power generating fuel cells and the sensing fuel cell. The anode of the sensing fuel cell is thinner than the anodes of the power generating fuel cells.

公开(公告)号：US10096840B1

公开(公告)日：2018-10-09

申请号：US14968194

申请日：2015-12-14

Applicant: BLOOM ENERGY CORPORATION

Inventor： Swaminathan Venkataraman ,  Emad El Batawi ,  Matthias Gottmann ,  Tad Armstrong ,  Manoj Pillai ,  Padiadpu Shankara Anantha ,  Vijay Radhakrishnan ,  Mohamed Sharif ,  Pradhiba Mohan ,  Rakesh Kandiboina

IPC: H01M8/24 ,  H01M8/1246 ,  H01M8/04228 ,  H01M8/04 ,  H01M8/06 ,  H01M8/12 ,  H01M4/90 ,  H01M8/04223 ,  H01M8/0662 ,  H01M8/124

Abstract: 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° C. to generate electricity and intentionally oxidizing the cermet anode electrodes at a temperature of at least 760° C. when the SOFC system stops operating to generate electricity.