公开(公告)号：US20220064063A1

公开(公告)日：2022-03-03

申请号：US17423467

申请日：2020-01-16

Applicant: Massachusetts Institute of Technology

Inventor： Yet-Ming Chiang ,  Leah Ellis ,  Andres Badel

IPC: C04B2/08 ,  B01J19/00

Abstract: Reaction schemes involving acids and bases; reactors comprising spatially varying chemical composition gradients (e.g., spatially varying pH gradients), and associated systems and methods, are generally described.

公开(公告)号：US11145909B2

公开(公告)日：2021-10-12

申请号：US15480235

申请日：2017-04-05

Applicant: Massachusetts Institute of Technology ,  Carnegie Mellon University ,  24M Technologies, Inc.

Inventor： Yet-Ming Chiang ,  Venkatasubramanian Viswanathan ,  Linsen Li ,  Vikram Pande ,  Dilip Krishnamurthy ,  Zeeshan Ahmad ,  William Henry Woodford

IPC: H01M10/42 ,  H01M10/0567 ,  H01M10/054 ,  H01M4/134 ,  H01M10/052 ,  H01M50/46 ,  H01M50/403 ,  H01M50/431 ,  H01M50/449 ,  H01M4/38 ,  H01M4/58

Abstract: The present disclosure is generally related to separators for use in lithium metal batteries, and associated systems and products. Certain embodiments are related to separators that form or are repaired when an electrode is held at a voltage. In some embodiments, an electrochemical cell may comprise an electrolyte that comprises a precursor for the separator.

公开(公告)号：US20200028165A1

公开(公告)日：2020-01-23

申请号：US16430803

申请日：2019-06-04

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY ,  Carnegie Mellon University

Inventor： Yet-Ming Chiang ,  Venkatasubramanian Viswanathan ,  Linsen Li ,  Vikram Pande ,  David Wang

IPC: H01M4/40 ,  H01M10/0567 ,  H01M4/136 ,  H01M10/0569 ,  H01M10/44

Abstract: The present invention is generally related to separators for use in lithium metal batteries, and associated systems and products. Certain embodiments are related to separators that form or are repaired when an electrode is held at a voltage. In some embodiments, an electrochemical cell may comprise an electrolyte that comprises a precursor for the separator.

公开(公告)号：US10319989B2

公开(公告)日：2019-06-11

申请号：US15905017

申请日：2018-02-26

Applicant: Massachusetts Institute of Technology

Inventor： Xinwei Chen ,  Jiayan Luo ,  Yet-Ming Chiang

IPC: H01M4/1397 ,  H01M4/136 ,  H01M4/04 ,  H01M4/38 ,  H01M4/62 ,  H01M10/052

Abstract: Embodiments described herein relate generally to lithium sulfur batteries and methods of producing the same. As described herein, preventing coarsening of sulfur during the well-known melt-diffusion processing of cathodes allows a high areal capacity of 10.7 mAh/cm2 at current density of 3.4 mA/cm2 (C-rate of 1/5 h−1). The addition of a lithium salt, such as LiTFSI, prior to melt-diffusion can prevent coarsening of molten sulfur and allows creation of a sulfur electrode with a high concentration of triple-phase junctions for electrochemical reaction. In some embodiments, approximately 60-70% utilization of the theoretical capacity of sulfur is reached at a high loading (e.g., greater than 7.5 mg S/cm2). The electrodes are prepared in lean-electrolyte environment of 3 mlelectrolyte/gsulfur (˜70 vol % of electrolyte in the electrode) for high areal capacity in Li—S batteries.

公开(公告)号：US10164242B2

公开(公告)日：2018-12-25

申请号：US14716501

申请日：2015-05-19

Applicant: Massachusetts Institute of Technology ,  The Regents of the University of Michigan ,  The Regents of the University of California

Inventor： Yet-Ming Chiang ,  Chang-Jun Bae ,  John William Halloran ,  Qiang Fu ,  Antoni P. Tomsia ,  Can K. Erdonmez

IPC: H01M4/139 ,  H01M10/0525 ,  H01M4/13 ,  H01M4/04 ,  H01M4/1391 ,  H01M10/052 ,  H01M4/02

Abstract: Porous electrodes in which the porosity has a low tortuosity are generally provided. In some embodiments, the porous electrodes can be designed to be filled with electrolyte and used in batteries, and can include low tortuosity in the primary direction of ion transport during charge and discharge of the battery. In some embodiments, the electrodes can have a high volume fraction of electrode active material (i.e., low porosity). The attributes outlined above can allow the electrodes to be fabricated with a higher energy density, higher capacity per unit area of electrode (mAh/cm2), and greater thickness than comparable electrodes while still providing high utilization of the active material in the battery during use. Accordingly, the electrodes can be used to produce batteries with high energy densities, high power, or both compared to batteries using electrodes of conventional design with relatively highly tortuous pores.

公开(公告)号：US20180034090A1

公开(公告)日：2018-02-01

申请号：US15618076

申请日：2017-06-08

Applicant: Massachusetts Institute of Technology ,  24-M Technologies, Inc.

Inventor： Yet-Ming Chiang ,  W. Craig Carter ,  Bryan Y. Ho ,  Mihai Duduta ,  Pimpa Limthongkul

IPC: H01M8/18 ,  H01M8/20 ,  B60L11/18

CPC classification number: H01M8/188 ,  B60L50/72 ,  B60L58/27 ,  H01M8/20 ,  Y02E60/528 ,  Y02T10/705 ,  Y02T90/34

Abstract: Redox flow devices are described in which at least one of the positive electrode or negative electrode-active materials is a semi-solid or is a condensed ion-storing electroactive material, and in which at least one of the electrode-active materials is transported to and from an assembly at which the electrochemical reaction occurs, producing electrical energy. The electronic conductivity of the semi-solid is increased by the addition of conductive particles to suspensions and/or via the surface modification of the solid in semi-solids (e.g., by coating the solid with a more electron conductive coating material to increase the power of the device). High energy density and high power redox flow devices are disclosed. The redox flow devices described herein can also include one or more inventive design features. In addition, inventive chemistries for use in redox flow devices are also described.

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

IPC: H01M8/18 ,  H01M4/58 ,  H01M4/62 ,  H01M4/38 ,  H01M8/22

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.

公开(公告)号：US20150125764A1

公开(公告)日：2015-05-07

申请号：US14514954

申请日：2014-10-15

Applicant: Massachusetts Institute of Technology

Inventor： Kyle Christopher Smith ,  W. Craig Carter ,  Yet-Ming Chiang

IPC: H01M8/04 ,  H01M8/18 ,  C25B1/00 ,  C25F7/00 ,  C25F3/02 ,  C02F1/469 ,  H01M8/20 ,  H01M12/08

CPC classification number: H01M8/04746 ,  C02F1/4691 ,  C02F2201/46 ,  C25B1/003 ,  C25F3/02 ,  C25F7/00 ,  H01M8/188 ,  H01M8/20 ,  H01M12/06 ,  H01M12/08

Abstract: Flow battery. The battery includes high energy density fluid electrodes having a selected non-Newtonian rheology and structure for providing intermittent flow pulses of controlled volume and duration of the fluid electrodes, the structure adapted to promote interfacial slip to improve flow uniformity. The battery disclosed herein provides a potential solution to large-scale electrical energy storage needs.

Abstract translation: 流动电池 电池包括具有选择的非牛顿流变学和结构的高能量密度流体电极，用于提供流体电极的受控体积和持续时间的间歇流动脉冲，该结构适于促进界面滑移以改善流动均匀性。 本文公开的电池提供了对大规模电能存储需求的潜在解决方案。

公开(公告)号：US20130249348A1

公开(公告)日：2013-09-26

申请号：US13739328

申请日：2013-01-11

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： Yet-Ming Chiang ,  Michael J. Cima ,  Timothy E. Chin

IPC: F03G7/00

CPC classification number: F03G7/005 ,  H01M2/16 ,  H01M4/485 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M6/30 ,  H01M2004/021 ,  H01M2010/4292

Abstract: The present invention provides systems, devices, and related methods, involving electrochemical actuation. In some cases, application of a voltage or current to a system or device of the invention may generate a volumetric or dimensional change, which may produce mechanical work. For example, at least a portion of the system may be constructed and arranged to be displaced from a first orientation to a second orientation. Systems such as these may be useful in various applications, including pumps (e.g., infusion pumps) and drug delivery devices, for example.

公开(公告)号：US12252442B2

公开(公告)日：2025-03-18

申请号：US18395376

申请日：2023-12-22

Applicant: Massachusetts Institute of Technology

Inventor： Yet-Ming Chiang ,  Leah Ellis ,  Andres Badel

IPC: B01J19/00 ,  C04B2/08 ,  C04B7/06

Abstract: Reaction schemes involving acids and bases; reactors comprising spatially varying chemical composition gradients (e.g., spatially varying pH gradients), and associated systems and methods, are generally described. For example, methods comprising producing an acid and a base via electrolysis; dissolving a material comprising calcium using the acid to produce ions comprising calcium in a region of a reactor with a pH of 6 or less; precipitating solid calcium hydroxide from the ions comprising calcium using the base in a region of a reactor with a pH of 10 or higher; and utilizing the calcium hydroxide in a downstream process to form a cement are described.