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Title: Kinetic phase evolution of spinel cobalt oxide during lithiation

Abstract

Spinel cobalt oxide has been proposed to undergo a multiple-step reaction during the electrochemical lithiation process. Understanding the kinetics of the lithiation process in this compound is crucial to optimize its performance and cyclability. In this work, we have utilized a low-angle annular dark-field scanning transmission electron microscopy method to visualize the dynamic reaction process in real time and study the reaction kinetics at different rates. We show that the particles undergo a two-step reaction at the single-particle level, which includes an initial intercalation reaction followed by a conversion reaction. At low rates, the conversion reaction starts after the intercalation reaction has fully finished, consistent with the prediction of density functional theoretical calculations. At high rates, the intercalation reaction is overwhelmed by the subsequently nucleated conversion reaction, and the reaction speeds of both the intercalation and conversion reactions are increased. Phase-field simulations show the crucial role of surface diffusion rates of lithium ions in controlling this process. Furthermore, this work provides microscopic insights into the reaction dynamics in non-equilibrium conditions and highlights the effect of lithium diffusion rates on the overall reaction homogeneity as well as the performance.

Authors:
 [1];  [2];  [2];  [3];  [4];  [2];  [2];  [2];  [2];  [4];  [2];  [2]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., Stony Brook, NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Harvard Univ., Cambridge, MA (United States)
  4. Univ. of Maryland, College Park, MD (United States)
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN); Energy Frontier Research Centers (EFRC) (United States). Center for Mesoscale Transport Properties (m2M)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1328370
Report Number(s):
BNL-112671-2016-JA
Journal ID: ISSN 1936-0851; KC0403020
Grant/Contract Number:  
SC0012704; SC0012673
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ACS Nano
Additional Journal Information:
Journal Name: ACS Nano; Journal ID: ISSN 1936-0851
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
29 ENERGY PLANNING, POLICY, AND ECONOMY; Co3O4 nanoparticles; lithium ion battery; in situ TEM; Center for Functional Nanomaterials

Citation Formats

Li, Jing, He, Kai, Meng, Qingping, Li, Xin, Zhu, Yizhou, Hwang, Sooyeon, Sun, Ke, Gan, Hong, Zhu, Yimei, Mo, Yifei, Stach, Eric A., and Su, Dong. Kinetic phase evolution of spinel cobalt oxide during lithiation. United States: N. p., 2016. Web. doi:10.1021/acsnano.6b04958.
Li, Jing, He, Kai, Meng, Qingping, Li, Xin, Zhu, Yizhou, Hwang, Sooyeon, Sun, Ke, Gan, Hong, Zhu, Yimei, Mo, Yifei, Stach, Eric A., & Su, Dong. Kinetic phase evolution of spinel cobalt oxide during lithiation. United States. https://doi.org/10.1021/acsnano.6b04958
Li, Jing, He, Kai, Meng, Qingping, Li, Xin, Zhu, Yizhou, Hwang, Sooyeon, Sun, Ke, Gan, Hong, Zhu, Yimei, Mo, Yifei, Stach, Eric A., and Su, Dong. 2016. "Kinetic phase evolution of spinel cobalt oxide during lithiation". United States. https://doi.org/10.1021/acsnano.6b04958. https://www.osti.gov/servlets/purl/1328370.
@article{osti_1328370,
title = {Kinetic phase evolution of spinel cobalt oxide during lithiation},
author = {Li, Jing and He, Kai and Meng, Qingping and Li, Xin and Zhu, Yizhou and Hwang, Sooyeon and Sun, Ke and Gan, Hong and Zhu, Yimei and Mo, Yifei and Stach, Eric A. and Su, Dong},
abstractNote = {Spinel cobalt oxide has been proposed to undergo a multiple-step reaction during the electrochemical lithiation process. Understanding the kinetics of the lithiation process in this compound is crucial to optimize its performance and cyclability. In this work, we have utilized a low-angle annular dark-field scanning transmission electron microscopy method to visualize the dynamic reaction process in real time and study the reaction kinetics at different rates. We show that the particles undergo a two-step reaction at the single-particle level, which includes an initial intercalation reaction followed by a conversion reaction. At low rates, the conversion reaction starts after the intercalation reaction has fully finished, consistent with the prediction of density functional theoretical calculations. At high rates, the intercalation reaction is overwhelmed by the subsequently nucleated conversion reaction, and the reaction speeds of both the intercalation and conversion reactions are increased. Phase-field simulations show the crucial role of surface diffusion rates of lithium ions in controlling this process. Furthermore, this work provides microscopic insights into the reaction dynamics in non-equilibrium conditions and highlights the effect of lithium diffusion rates on the overall reaction homogeneity as well as the performance.},
doi = {10.1021/acsnano.6b04958},
url = {https://www.osti.gov/biblio/1328370}, journal = {ACS Nano},
issn = {1936-0851},
number = ,
volume = ,
place = {United States},
year = {Thu Sep 15 00:00:00 EDT 2016},
month = {Thu Sep 15 00:00:00 EDT 2016}
}

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Cited by: 44 works
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Works referencing / citing this record:

Review of Recent Development of In Situ/Operando Characterization Techniques for Lithium Battery Research
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A critical review-promises and barriers of conversion electrodes for Li-ion batteries
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journal, March 2018


Phase evolution of conversion-type electrode for lithium ion batteries
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Size-dependent kinetics during non-equilibrium lithiation of nano-sized zinc ferrite
journal, January 2019


Atomic visualization of a non-equilibrium sodiation pathway in copper sulfide
journal, March 2018


Size-dependent kinetics during non-equilibrium lithiation of nano-sized zinc ferrite
journal, January 2019


Phase evolution of conversion-type electrode for lithium ion batteries
journal, May 2019