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公开(公告)号：US10230124B2
公开(公告)日：2019-03-12
申请号：US14557924
申请日：2014-12-02
Applicant: Massachusetts Institute of Technology
Inventor： Brandon James Hopkins , Alexander H. Slocum , Xinwei Chen , Yet-Ming Chiang , Frank Yongzhen Fan , Ahmed Helal , Zheng Li , Kyle C. Smith , W. Craig Carter
IPC: H01M8/18 , H01M8/20 , H01M8/04276
Abstract: The flow cell includes first and second reservoirs having a selected volume containing a flowable redox electrode. A membrane separates charged and discharged material. An energy-extraction region includes electronically conductive porous current collectors through or adjacent to which the flowable redox electrodes flow and to which charge transfer occurs. Structure is provided for altering orientation of the flow cell whereby gravity induces flow of the flowable redox electrode between the first and second reservoirs to deliver power. By varying the angle of the cell, flow rate and power delivered on discharge or the charge rate on charge may be varied.
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Patent Agency Ranking
公开(公告)号：US10992003B2
公开(公告)日：2021-04-27
申请号：US15957027
申请日：2018-04-19
Applicant: Massachusetts Institute of Technology
Inventor： Liang Su , Zheng Li , Yet-Ming Chiang , Menghsuan Sam Pan
IPC: H01M8/18 , H01J7/00 , H01M4/92 , H01M12/08 , H01M4/90 , H01M4/96 , H01M4/86 , H01M4/36 , H01M12/02 , H02J7/00
Abstract: An electrochemical apparatus includes a catholyte, an anolyte, and a separator disposed between the catholyte and the anolyte. The catholyte includes metal salt dissolved in water, thereby providing at least one metal ion. The anolyte includes a polysulfide solution. The separator is permeable to the at least one metal ion. During a charging process of the electrochemical apparatus, oxygen is generated in the catholyte, the polysulfide in the polysulfide solution undergoes a reduction reaction in the anolyte, and the at least one metal ion moves from the catholyte to the anolyte. During a discharging process of the apparatus, the oxygen is consumed in the catholyte, the polysulfide oxidizes in the anolyte, and the at least one metal ion moves from the anolyte to the catholyte.
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公开(公告)号：US20180241107A1
公开(公告)日：2018-08-23
申请号：US15957027
申请日：2018-04-19
Applicant: Massachusetts Institute of Technology
Inventor： Liang Su , Zheng Li , Yet-Ming Chiang , Menghsuan Sam Pan
CPC classification number: H01M12/08 , H01M4/368 , H01M4/8615 , H01M4/8657 , H01M4/9016 , H01M4/9041 , H01M4/92 , H01M4/921 , H01M4/96 , H01M8/186 , H01M8/188 , H01M12/02 , H01M2004/8689 , H01M2300/0002 , H01M2300/0005 , H01M2300/0014 , H02J7/0068 , Y02E60/128
Abstract: An electrochemical apparatus includes a catholyte, an anolyte, and a separator disposed between the catholyte and the anolyte. The catholyte includes metal salt dissolved in water, thereby providing at least one metal ion. The anolyte includes a polysulfide solution. The separator is permeable to the at least one metal ion. During a charging process of the electrochemical apparatus, oxygen is generated in the catholyte, the polysulfide in the polysulfide solution undergoes a reduction reaction in the anolyte, and the at least one metal ion moves from the catholyte to the anolyte. During a discharging process of the apparatus, the oxygen is consumed in the catholyte, the polysulfide oxidizes in the anolyte, and the at least one metal ion moves from the anolyte to the catholyte.
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公开(公告)号：US11756983B2
公开(公告)日：2023-09-12
申请号：US17765361
申请日：2021-12-10
Applicant: Massachusetts Institute of Technology
Inventor： Rajeev J. Ram , Jaehwan Kim , Jin Xue , Zheng Li
IPC: H01L27/15
CPC classification number: H01L27/156
Abstract: Light-emitting diodes having radiative recombination regions with deep sub-micron dimensions are described. The LEDs can be fabricated from indirect bandgap semiconductors and operated under forward bias conditions to produce intense light output from the indirect bandgap material. The light output per unit emission area can be over 500 W cm−2, exceeding the performance of even high brightness gallium nitride LEDs.
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公开(公告)号：US20230139185A1
公开(公告)日：2023-05-04
申请号：US17765361
申请日：2021-12-10
Applicant: Massachusetts Institute of Technology
Inventor： Rajeev J. RAM , Jaehwan Kim , Jin Xue , Zheng Li
IPC: H01L27/15
Abstract: Light-emitting diodes having radiative recombination regions with deep sub-micron dimensions are described. The LEDs can be fabricated from indirect bandgap semiconductors and operated under forward bias conditions to produce intense light output from the indirect bandgap material. The light output per unit emission area can be over 500 W cm−2, exceeding the performance of even high brightness gallium nitride LEDs.
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公开(公告)号：US20170200966A1
公开(公告)日：2017-07-13
申请号：US15387225
申请日：2016-12-21
Applicant: Massachusetts Institute of Technology
Inventor： Yet-Ming Chiang , William Henry Woodford , Frank Y. Fan , Zheng Li , Nir Baram , Kyle C. Smith , W. Craig Carter , Gareth H. McKinley , Ahmed Helal
CPC classification number: H01M8/188 , H01M4/382 , H01M4/5825 , H01M4/625 , H01M8/20 , H01M8/225 , H01M12/08 , Y02E60/128 , Y02E60/528
Abstract: The present invention generally relates to energy storage devices, and to metal sulfide energy storage devices in particular. Some aspects of the invention relate to energy storage devices comprising at least one flowable electrode, wherein the flowable electrode comprises an electroactive metal sulfide material suspended and/or dissolved in a carrier fluid. In some embodiments, the flowable electrode further comprises a plurality of electronically conductive particles suspended and/or dissolved in the carrier fluid, wherein the electronically conductive particles form a percolating conductive network. An energy storage device comprising a flowable electrode comprising a metal sulfide electroactive material and a percolating conductive network may advantageously exhibit, upon reversible cycling, higher energy densities and specific capacities than conventional energy storage devices.
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