Yoke-shell nanoparticle, method and applications

a nanoparticle and nanoparticle technology, applied in the field of lithiumsulfur batteries, can solve the problems of limited practical application of li/s cells, and achieve the effect of superior performan

Inactive Publication Date: 2016-12-22
CORNELL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a new type of nanoparticle that can be used in batteries. The nanoparticle has a void space between its yoke and its surrounding material, which helps to accommodate the expansion of the battery materials when it is operating. This design helps to improve the performance of batteries that use this nanoparticle.

Problems solved by technology

Despite these advantages, the practical application of Li / S cells is still limited due mainly to: (1) a low conductivity of sulfur; (2) a dissolution of polysulfides and a resulting shuttling effect in a charge-discharge process; and (3) a volumetric expansion during a discharge of the cell.

Method used

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  • Yoke-shell nanoparticle, method and applications
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  • Yoke-shell nanoparticle, method and applications

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Embodiment Construction

1. General Principle

[0033]Most generally, the embodiments provide a nanoparticle and a related method for fabricating the nanoparticle. A nanoparticle in accordance with the embodiments is in the form of a yoke-shell nanoparticle and includes: (1) a decomposable material yoke; (2) a permeable organic polymer material shell surrounding the decomposable material yoke; and (3) a void space interposed between the decomposable material yoke and the permeable organic polymer material shell surrounding the yoke.

[0034]The embodiments realize the foregoing nanoparticle within the context of the related method which in turn provides for forming a permeable organic polymer material shell upon and contacting a decomposable material core. The embodiments next provide for decomposing a portion of the decomposable material core to provide a decomposed material that escapes from the permeable organic polymer material shell and leaves behind a partially decomposed material yoke separated at least in...

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Abstract

A nanoparticle and a method for fabricating the nanoparticle utilize a decomposable material yoke located within permeable organic polymer material shell and separated from the permeable organic polymer material shell by a void space. When the decomposable material yoke comprises a sulfur material and the permeable organic polymer material shell comprises a material permeable to both a sulfur material vapor and a lithium ion within a battery electrolyte the nanoparticle may be used within an electrode for a Li / S battery absent the negative effects of battery electrode materials expansion.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is related to, and derives priority from, U.S. Provisional Patent Application Ser. No. 61 / 843,133, filed 5 Jul. 2013 and titled Coating Structure, Methods and Applications for Li / S Batteries, the content of which is incorporated herein fully by reference.STATEMENT OF GOVERNMENT INTEREST[0002]This work was supported by the United States Department of Energy though Grant No. DE-FG02-87ER45298, to the Energy Materials Center at Cornell (EMC2), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Basic Energy Sciences under Award Number DE-SC0001086. This work also made use of the electron microscopy facility of the Cornell Center for Materials Research (CCMR) with support from the United States National Science Foundation Materials Research Science and Engineering Centers (MRSEC) program (DMR 1120296). The United States Government may have rights in any invention that results from the work as ...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): H01M4/36H01M4/58H01M4/38H01M4/04H01M4/1395H01M4/1397H01M4/134H01M4/136H01M10/0525H01M4/60
CPCH01M4/366H01M10/0525H01M4/5815H01M4/38H01M4/0404H01M4/1395H01M4/1397H01M4/134H01M4/136H01M4/602H01M10/052Y02T10/70
InventorYU, YINGCHAOZHOU, WEIDONGCHEN, HAOABRUNA, HECTOR
OwnerCORNELL UNIVERSITY