Degradation Mechanism of O3-Type NaNi1/3Fe1/3Mn1/3O2Cathode Materials during Ambient Storage and Their in Situ Regeneration

Yang Sun; Hong Wang; Dechao Meng; Xiaoqiao Li; Xiaozhen Liao; Haiying Che; Guijia Cui; Fengping Yu; Weimin Yang; Linsen Li; Zi Feng Ma

doi:10.1021/acsaem.1c00047

Degradation Mechanism of O3-Type NaNi_1/3Fe_1/3Mn_1/3O₂Cathode Materials during Ambient Storage and Their in Situ Regeneration

Yang Sun
, Hong Wang^*
, Dechao Meng
, Xiaoqiao Li
, Xiaozhen Liao
, Haiying Che
, Guijia Cui
, Fengping Yu
, Weimin Yang
, Linsen Li^*
, Zi Feng Ma^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

86 Citations (Scopus)

Abstract

Sodium-ion batteries (SIBs) hold great promise for low-cost energy storage. Despite the major advances made in the material preparation and battery performance, air instability has become a bottleneck for the storage and electrode fabrication of O3-type NaNi1/3Fe1/3Mn1/3O2 (NFM), but the underlying mechanism remains elusive. Here we discovered that NFM loses Na+ ions during ambient storage and Na2CO3 "fibers"sprout from the particle surface, which caused the performance decay. We further demonstrated a facile resintering strategy to regenerate the NFM in situ. This work highlights the importance of stringent humidity control and provides the basis for designing surface-modification strategies.

Original language	English
Pages (from-to)	2061-2067
Number of pages	7
Journal	ACS Applied Energy Materials
Volume	4
Issue number	3
DOIs	https://doi.org/10.1021/acsaem.1c00047
Publication status	Published - 22 Mar 2021
Externally published	Yes

Keywords

air instability
cathode materials
correlative SEM-Raman
degradation mechanism
regeneration
sodium-ion batteries

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10.1021/acsaem.1c00047

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title = "Degradation Mechanism of O3-Type NaNi1/3Fe1/3Mn1/3O2Cathode Materials during Ambient Storage and Their in Situ Regeneration",

abstract = "Sodium-ion batteries (SIBs) hold great promise for low-cost energy storage. Despite the major advances made in the material preparation and battery performance, air instability has become a bottleneck for the storage and electrode fabrication of O3-type NaNi1/3Fe1/3Mn1/3O2 (NFM), but the underlying mechanism remains elusive. Here we discovered that NFM loses Na+ ions during ambient storage and Na2CO3 {"}fibers{"}sprout from the particle surface, which caused the performance decay. We further demonstrated a facile resintering strategy to regenerate the NFM in situ. This work highlights the importance of stringent humidity control and provides the basis for designing surface-modification strategies.",

keywords = "air instability, cathode materials, correlative SEM-Raman, degradation mechanism, regeneration, sodium-ion batteries",

author = "Yang Sun and Hong Wang and Dechao Meng and Xiaoqiao Li and Xiaozhen Liao and Haiying Che and Guijia Cui and Fengping Yu and Weimin Yang and Linsen Li and Ma, \{Zi Feng\}",

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year = "2021",

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doi = "10.1021/acsaem.1c00047",

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T1 - Degradation Mechanism of O3-Type NaNi1/3Fe1/3Mn1/3O2Cathode Materials during Ambient Storage and Their in Situ Regeneration

AU - Sun, Yang

AU - Wang, Hong

AU - Meng, Dechao

AU - Li, Xiaoqiao

AU - Liao, Xiaozhen

AU - Che, Haiying

AU - Cui, Guijia

AU - Yu, Fengping

AU - Yang, Weimin

AU - Li, Linsen

AU - Ma, Zi Feng

PY - 2021/3/22

Y1 - 2021/3/22

N2 - Sodium-ion batteries (SIBs) hold great promise for low-cost energy storage. Despite the major advances made in the material preparation and battery performance, air instability has become a bottleneck for the storage and electrode fabrication of O3-type NaNi1/3Fe1/3Mn1/3O2 (NFM), but the underlying mechanism remains elusive. Here we discovered that NFM loses Na+ ions during ambient storage and Na2CO3 "fibers"sprout from the particle surface, which caused the performance decay. We further demonstrated a facile resintering strategy to regenerate the NFM in situ. This work highlights the importance of stringent humidity control and provides the basis for designing surface-modification strategies.

AB - Sodium-ion batteries (SIBs) hold great promise for low-cost energy storage. Despite the major advances made in the material preparation and battery performance, air instability has become a bottleneck for the storage and electrode fabrication of O3-type NaNi1/3Fe1/3Mn1/3O2 (NFM), but the underlying mechanism remains elusive. Here we discovered that NFM loses Na+ ions during ambient storage and Na2CO3 "fibers"sprout from the particle surface, which caused the performance decay. We further demonstrated a facile resintering strategy to regenerate the NFM in situ. This work highlights the importance of stringent humidity control and provides the basis for designing surface-modification strategies.

KW - air instability

KW - cathode materials

KW - correlative SEM-Raman

KW - degradation mechanism

KW - regeneration

KW - sodium-ion batteries

UR - https://www.scopus.com/pages/publications/85105668572

U2 - 10.1021/acsaem.1c00047

DO - 10.1021/acsaem.1c00047

M3 - Article

AN - SCOPUS:85105668572

SN - 2574-0962

VL - 4

SP - 2061

EP - 2067

JO - ACS Applied Energy Materials

JF - ACS Applied Energy Materials

IS - 3

ER -

Degradation Mechanism of O3-Type NaNi_1/3Fe_1/3Mn_1/3O₂Cathode Materials during Ambient Storage and Their in Situ Regeneration

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Keywords

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