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Title: Methods and apparatus to facilitate alkali metal transport during battery cycling, and batteries incorporating same

Abstract

An anode includes a mixed ionic-electronic conductor (MIEC) with an open pore structure. The open pore structure includes open pores to facilitate motion of an alkali metal into and/or out of the MIEC. The open pore structure thus provides open space to relieve the stresses generated by the alkali metal when charging/discharging a battery. The MIEC is formed from a material that is thermodynamically and electrochemically stable against the alkali metal to prevent the formation of solid-electrolyte interphase (SEI) debris and the formation of dead alkali metal. The MIEC may also be passive (the MIEC does not store or release alkali metal). In one example, the open pore structure may be an array of substantially aligned tubules with a width less than about 300 nm, a wall thickness between about 1 nm to about 30 nm, and a height of at least 10 um arranged as a honeycomb.

Inventors:
; ;
Issue Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE; National Science Foundation (NSF)
OSTI Identifier:
1986750
Patent Number(s):
11482708
Application Number:
16/499,656
Assignee:
Massachusetts Institute of Technology (Cambridge, MA)
DOE Contract Number:  
SC0002633; ECCS-1610806
Resource Type:
Patent
Resource Relation:
Patent File Date: 09/23/2019
Country of Publication:
United States
Language:
English

Citation Formats

Li, Ju, Chen, Yuming, and Wang, Ziqiang. Methods and apparatus to facilitate alkali metal transport during battery cycling, and batteries incorporating same. United States: N. p., 2022. Web.
Li, Ju, Chen, Yuming, & Wang, Ziqiang. Methods and apparatus to facilitate alkali metal transport during battery cycling, and batteries incorporating same. United States.
Li, Ju, Chen, Yuming, and Wang, Ziqiang. Tue . "Methods and apparatus to facilitate alkali metal transport during battery cycling, and batteries incorporating same". United States. https://www.osti.gov/servlets/purl/1986750.
@article{osti_1986750,
title = {Methods and apparatus to facilitate alkali metal transport during battery cycling, and batteries incorporating same},
author = {Li, Ju and Chen, Yuming and Wang, Ziqiang},
abstractNote = {An anode includes a mixed ionic-electronic conductor (MIEC) with an open pore structure. The open pore structure includes open pores to facilitate motion of an alkali metal into and/or out of the MIEC. The open pore structure thus provides open space to relieve the stresses generated by the alkali metal when charging/discharging a battery. The MIEC is formed from a material that is thermodynamically and electrochemically stable against the alkali metal to prevent the formation of solid-electrolyte interphase (SEI) debris and the formation of dead alkali metal. The MIEC may also be passive (the MIEC does not store or release alkali metal). In one example, the open pore structure may be an array of substantially aligned tubules with a width less than about 300 nm, a wall thickness between about 1 nm to about 30 nm, and a height of at least 10 um arranged as a honeycomb.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 25 00:00:00 EDT 2022},
month = {Tue Oct 25 00:00:00 EDT 2022}
}

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