Interfacial Evolution and Accelerated Aging Mechanism for LiFePO4/Graphite Pouch Batteries Under Multi-Step Indirect Activation

Yun Liu; Jinyang Dong; Jialong Zhou; Yibiao Guan; Yimin Wei; Jiayu Zhao; Jinding Liang; Xixiu Shi; Kang Yan; Yun Lu; Ning Li; Yuefeng Su; Feng Wu; Lai Chen

doi:10.1007/s40820-025-01971-2

Interfacial Evolution and Accelerated Aging Mechanism for LiFePO₄/Graphite Pouch Batteries Under Multi-Step Indirect Activation

Yun Liu
, Jinyang Dong^*
, Jialong Zhou
, Yibiao Guan
, Yimin Wei
, Jiayu Zhao
, Jinding Liang
, Xixiu Shi
, Kang Yan
, Yun Lu
, Ning Li
, Yuefeng Su^*
, Feng Wu
, Lai Chen^*

^*Corresponding author for this work

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

Abstract

Quantifying the aging mechanisms and their evolution patterns during battery aging is crucial for enabling renewable energy. The uniform electrode/electrolyte interface (EEI) film on the electrode surface has an important impact on the energy density, cycling performance and power density of the battery. Multi-step segmented indirect activation strategy promotes the formation of uniform EEI and suppresses iron dissolved in the electrolyte.

Original language	English
Article number	136
Journal	Nano-Micro Letters
Volume	18
Issue number	1
DOIs	https://doi.org/10.1007/s40820-025-01971-2
Publication status	Published - Dec 2026

Keywords

Accelerated aging
Dissolve of Fe ions
EEI film
Electrode/electrolyte interface
Multi-step segmented indirect activation

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10.1007/s40820-025-01971-2

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title = "Interfacial Evolution and Accelerated Aging Mechanism for LiFePO4/Graphite Pouch Batteries Under Multi-Step Indirect Activation",

abstract = "Quantifying the aging mechanisms and their evolution patterns during battery aging is crucial for enabling renewable energy. The uniform electrode/electrolyte interface (EEI) film on the electrode surface has an important impact on the energy density, cycling performance and power density of the battery. Multi-step segmented indirect activation strategy promotes the formation of uniform EEI and suppresses iron dissolved in the electrolyte.",

keywords = "Accelerated aging, Dissolve of Fe ions, EEI film, Electrode/electrolyte interface, Multi-step segmented indirect activation",

author = "Yun Liu and Jinyang Dong and Jialong Zhou and Yibiao Guan and Yimin Wei and Jiayu Zhao and Jinding Liang and Xixiu Shi and Kang Yan and Yun Lu and Ning Li and Yuefeng Su and Feng Wu and Lai Chen",

note = "Publisher Copyright: {\textcopyright} The Author(s) 2026.",

year = "2026",

month = dec,

doi = "10.1007/s40820-025-01971-2",

language = "English",

volume = "18",

journal = "Nano-Micro Letters",

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TY - JOUR

T1 - Interfacial Evolution and Accelerated Aging Mechanism for LiFePO4/Graphite Pouch Batteries Under Multi-Step Indirect Activation

AU - Liu, Yun

AU - Dong, Jinyang

AU - Zhou, Jialong

AU - Guan, Yibiao

AU - Wei, Yimin

AU - Zhao, Jiayu

AU - Liang, Jinding

AU - Shi, Xixiu

AU - Yan, Kang

AU - Lu, Yun

AU - Li, Ning

AU - Su, Yuefeng

AU - Wu, Feng

AU - Chen, Lai

PY - 2026/12

Y1 - 2026/12

N2 - Quantifying the aging mechanisms and their evolution patterns during battery aging is crucial for enabling renewable energy. The uniform electrode/electrolyte interface (EEI) film on the electrode surface has an important impact on the energy density, cycling performance and power density of the battery. Multi-step segmented indirect activation strategy promotes the formation of uniform EEI and suppresses iron dissolved in the electrolyte.

AB - Quantifying the aging mechanisms and their evolution patterns during battery aging is crucial for enabling renewable energy. The uniform electrode/electrolyte interface (EEI) film on the electrode surface has an important impact on the energy density, cycling performance and power density of the battery. Multi-step segmented indirect activation strategy promotes the formation of uniform EEI and suppresses iron dissolved in the electrolyte.

KW - Accelerated aging

KW - Dissolve of Fe ions

KW - EEI film

KW - Electrode/electrolyte interface

KW - Multi-step segmented indirect activation

UR - https://www.scopus.com/pages/publications/105026441833

U2 - 10.1007/s40820-025-01971-2

DO - 10.1007/s40820-025-01971-2

M3 - Article

AN - SCOPUS:105026441833

SN - 2311-6706

VL - 18

JO - Nano-Micro Letters

JF - Nano-Micro Letters

IS - 1

M1 - 136

ER -

Interfacial Evolution and Accelerated Aging Mechanism for LiFePO₄/Graphite Pouch Batteries Under Multi-Step Indirect Activation

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Keywords

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