Formation of Zintl Ions and Their Configurational Change during Sodiation in Na-Sn Battery

Yong Seok Choi, Young Woon Byeon, Jae Pyoung Ahn, Jae-chul Lee

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Despite their large theoretical storage capability, Na-Sn batteries exhibit poor round-trip energy efficiencies as compared to Li-Si batteries. Here, we report the results of a comprehensive study to elucidate how and why Na-Sn batteries exhibit such a low energy efficiency. As a convincing evidence for this behavior, we observed that the resistivity of the Sn anode increased by 8 orders of magnitude during in situ sodiation experiments, which is attributed to the formation of electrically resistive Zintl ions in the sodiated Sn. Continual sodiation induced the development of residual stresses at the Sn anode and caused the distortion of Zintl ions from their ideal configuration. This distortion caused a change in the electronic structure, resulting in the increased resistivity of the sodiated Sn. Our findings offer some solutions that can be used to improve the energy efficiency of Na-Sn batteries.

Original languageEnglish
Pages (from-to)679-686
Number of pages8
JournalNano Letters
Volume17
Issue number2
DOIs
Publication statusPublished - 2017 Feb 8

Fingerprint

Energy efficiency
electric batteries
Ions
Anodes
ions
anodes
electrical resistivity
Electronic structure
Residual stresses
residual stress
energy
electronic structure
configurations
Experiments

Keywords

  • ab initio simulation
  • FEM
  • in situ sodiation experiment
  • Na-ion battery
  • resistivity
  • Zintl ion

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Formation of Zintl Ions and Their Configurational Change during Sodiation in Na-Sn Battery. / Choi, Yong Seok; Byeon, Young Woon; Ahn, Jae Pyoung; Lee, Jae-chul.

In: Nano Letters, Vol. 17, No. 2, 08.02.2017, p. 679-686.

Research output: Contribution to journalArticle

Choi, Yong Seok ; Byeon, Young Woon ; Ahn, Jae Pyoung ; Lee, Jae-chul. / Formation of Zintl Ions and Their Configurational Change during Sodiation in Na-Sn Battery. In: Nano Letters. 2017 ; Vol. 17, No. 2. pp. 679-686.
@article{4412beafd6264ecfac2cc03fc0b78792,
title = "Formation of Zintl Ions and Their Configurational Change during Sodiation in Na-Sn Battery",
abstract = "Despite their large theoretical storage capability, Na-Sn batteries exhibit poor round-trip energy efficiencies as compared to Li-Si batteries. Here, we report the results of a comprehensive study to elucidate how and why Na-Sn batteries exhibit such a low energy efficiency. As a convincing evidence for this behavior, we observed that the resistivity of the Sn anode increased by 8 orders of magnitude during in situ sodiation experiments, which is attributed to the formation of electrically resistive Zintl ions in the sodiated Sn. Continual sodiation induced the development of residual stresses at the Sn anode and caused the distortion of Zintl ions from their ideal configuration. This distortion caused a change in the electronic structure, resulting in the increased resistivity of the sodiated Sn. Our findings offer some solutions that can be used to improve the energy efficiency of Na-Sn batteries.",
keywords = "ab initio simulation, FEM, in situ sodiation experiment, Na-ion battery, resistivity, Zintl ion",
author = "Choi, {Yong Seok} and Byeon, {Young Woon} and Ahn, {Jae Pyoung} and Jae-chul Lee",
year = "2017",
month = "2",
day = "8",
doi = "10.1021/acs.nanolett.6b03690",
language = "English",
volume = "17",
pages = "679--686",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",
number = "2",

}

TY - JOUR

T1 - Formation of Zintl Ions and Their Configurational Change during Sodiation in Na-Sn Battery

AU - Choi, Yong Seok

AU - Byeon, Young Woon

AU - Ahn, Jae Pyoung

AU - Lee, Jae-chul

PY - 2017/2/8

Y1 - 2017/2/8

N2 - Despite their large theoretical storage capability, Na-Sn batteries exhibit poor round-trip energy efficiencies as compared to Li-Si batteries. Here, we report the results of a comprehensive study to elucidate how and why Na-Sn batteries exhibit such a low energy efficiency. As a convincing evidence for this behavior, we observed that the resistivity of the Sn anode increased by 8 orders of magnitude during in situ sodiation experiments, which is attributed to the formation of electrically resistive Zintl ions in the sodiated Sn. Continual sodiation induced the development of residual stresses at the Sn anode and caused the distortion of Zintl ions from their ideal configuration. This distortion caused a change in the electronic structure, resulting in the increased resistivity of the sodiated Sn. Our findings offer some solutions that can be used to improve the energy efficiency of Na-Sn batteries.

AB - Despite their large theoretical storage capability, Na-Sn batteries exhibit poor round-trip energy efficiencies as compared to Li-Si batteries. Here, we report the results of a comprehensive study to elucidate how and why Na-Sn batteries exhibit such a low energy efficiency. As a convincing evidence for this behavior, we observed that the resistivity of the Sn anode increased by 8 orders of magnitude during in situ sodiation experiments, which is attributed to the formation of electrically resistive Zintl ions in the sodiated Sn. Continual sodiation induced the development of residual stresses at the Sn anode and caused the distortion of Zintl ions from their ideal configuration. This distortion caused a change in the electronic structure, resulting in the increased resistivity of the sodiated Sn. Our findings offer some solutions that can be used to improve the energy efficiency of Na-Sn batteries.

KW - ab initio simulation

KW - FEM

KW - in situ sodiation experiment

KW - Na-ion battery

KW - resistivity

KW - Zintl ion

UR - http://www.scopus.com/inward/record.url?scp=85012016425&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85012016425&partnerID=8YFLogxK

U2 - 10.1021/acs.nanolett.6b03690

DO - 10.1021/acs.nanolett.6b03690

M3 - Article

VL - 17

SP - 679

EP - 686

JO - Nano Letters

JF - Nano Letters

SN - 1530-6984

IS - 2

ER -