The Raw Mixed Conducting Interphase Affords Effective Prelithiation in Working Batteries

Xin Yang Yue; Yu Xing Yao; Jing Zhang; Zeheng Li; Si Yu Yang; Xun Lu Li; Chong Yan; Qiang Zhang

doi:10.1002/anie.202205697

The Raw Mixed Conducting Interphase Affords Effective Prelithiation in Working Batteries

Xin Yang Yue, Yu Xing Yao, Jing Zhang, Zeheng Li, Si Yu Yang, Xun Lu Li, Chong Yan, Qiang Zhang^*

^*Corresponding author for this work

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

41 Citations (Scopus)

Abstract

Contact prelithiation is an important strategy to compensate the initial capacity loss of lithium-ion batteries. However, the dead Li generated from inadequate Li conversion reduces the cycling stability of rechargeable batteries. Herein a mono-solvent dimethyl carbonate (DMC) electrolyte was employed in contact prelithiation for the first time. We discover that the low-organic-content raw electrolyte interphase (REI) induced by this electrolyte on Li source and anode is a mixed ion/electron conductor. Therefore, electron channels can be maintained even when the Li source has been completely wrapped by the DMC-derived REI. As a result, an outstanding Li source utilization of 92.8 % and a negligible dead Li yield can be realized. This strategy renders batteries with a very high initial Coulombic efficiency (90.0 %) and an excellent capacity retention (94.9 %) over 210 cycles, highlighting the significance of REI for effective contact prelithiation.

Original language	English
Article number	e202205697
Journal	Angewandte Chemie - International Edition
Volume	61
Issue number	29
DOIs	https://doi.org/10.1002/anie.202205697
Publication status	Published - 18 Jul 2022
Externally published	Yes

Keywords

Contact Prelithiation
Electrolyte
Li Source Utilization
Lithium-Ion Batteries
Solid Electrolyte Interphase

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/anie.202205697

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title = "The Raw Mixed Conducting Interphase Affords Effective Prelithiation in Working Batteries",

abstract = "Contact prelithiation is an important strategy to compensate the initial capacity loss of lithium-ion batteries. However, the dead Li generated from inadequate Li conversion reduces the cycling stability of rechargeable batteries. Herein a mono-solvent dimethyl carbonate (DMC) electrolyte was employed in contact prelithiation for the first time. We discover that the low-organic-content raw electrolyte interphase (REI) induced by this electrolyte on Li source and anode is a mixed ion/electron conductor. Therefore, electron channels can be maintained even when the Li source has been completely wrapped by the DMC-derived REI. As a result, an outstanding Li source utilization of 92.8 % and a negligible dead Li yield can be realized. This strategy renders batteries with a very high initial Coulombic efficiency (90.0 %) and an excellent capacity retention (94.9 %) over 210 cycles, highlighting the significance of REI for effective contact prelithiation.",

keywords = "Contact Prelithiation, Electrolyte, Li Source Utilization, Lithium-Ion Batteries, Solid Electrolyte Interphase",

author = "Yue, {Xin Yang} and Yao, {Yu Xing} and Jing Zhang and Zeheng Li and Yang, {Si Yu} and Li, {Xun Lu} and Chong Yan and Qiang Zhang",

note = "Publisher Copyright: {\textcopyright} 2022 Wiley-VCH GmbH.",

year = "2022",

month = jul,

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doi = "10.1002/anie.202205697",

language = "English",

volume = "61",

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T1 - The Raw Mixed Conducting Interphase Affords Effective Prelithiation in Working Batteries

AU - Yue, Xin Yang

AU - Yao, Yu Xing

AU - Zhang, Jing

AU - Li, Zeheng

AU - Yang, Si Yu

AU - Li, Xun Lu

AU - Yan, Chong

AU - Zhang, Qiang

PY - 2022/7/18

Y1 - 2022/7/18

N2 - Contact prelithiation is an important strategy to compensate the initial capacity loss of lithium-ion batteries. However, the dead Li generated from inadequate Li conversion reduces the cycling stability of rechargeable batteries. Herein a mono-solvent dimethyl carbonate (DMC) electrolyte was employed in contact prelithiation for the first time. We discover that the low-organic-content raw electrolyte interphase (REI) induced by this electrolyte on Li source and anode is a mixed ion/electron conductor. Therefore, electron channels can be maintained even when the Li source has been completely wrapped by the DMC-derived REI. As a result, an outstanding Li source utilization of 92.8 % and a negligible dead Li yield can be realized. This strategy renders batteries with a very high initial Coulombic efficiency (90.0 %) and an excellent capacity retention (94.9 %) over 210 cycles, highlighting the significance of REI for effective contact prelithiation.

AB - Contact prelithiation is an important strategy to compensate the initial capacity loss of lithium-ion batteries. However, the dead Li generated from inadequate Li conversion reduces the cycling stability of rechargeable batteries. Herein a mono-solvent dimethyl carbonate (DMC) electrolyte was employed in contact prelithiation for the first time. We discover that the low-organic-content raw electrolyte interphase (REI) induced by this electrolyte on Li source and anode is a mixed ion/electron conductor. Therefore, electron channels can be maintained even when the Li source has been completely wrapped by the DMC-derived REI. As a result, an outstanding Li source utilization of 92.8 % and a negligible dead Li yield can be realized. This strategy renders batteries with a very high initial Coulombic efficiency (90.0 %) and an excellent capacity retention (94.9 %) over 210 cycles, highlighting the significance of REI for effective contact prelithiation.

KW - Contact Prelithiation

KW - Electrolyte

KW - Li Source Utilization

KW - Lithium-Ion Batteries

KW - Solid Electrolyte Interphase

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DO - 10.1002/anie.202205697

M3 - Article

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SN - 1433-7851

VL - 61

JO - Angewandte Chemie - International Edition

JF - Angewandte Chemie - International Edition

IS - 29

M1 - e202205697

ER -

The Raw Mixed Conducting Interphase Affords Effective Prelithiation in Working Batteries

Abstract

Keywords

UN SDGs

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