Interfacial Dual-Modulation via Electrostatic Shielding and Dead Lithium Reactivation for Solid-State Lithium Energy Storage

Ying Wu; Bin Qiu; Jie Huang; Kaiming Huang; Jiaming Wen; Huidong Wei; Peixin Zhang; Chuanxin He; Hongwei Mi

doi:10.1016/j.ensm.2024.103989

Interfacial Dual-Modulation via Electrostatic Shielding and Dead Lithium Reactivation for Solid-State Lithium Energy Storage

Ying Wu, Bin Qiu, Jie Huang, Kaiming Huang, Jiaming Wen, Huidong Wei, Peixin Zhang, Chuanxin He, Hongwei Mi

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

9 Citations (Scopus)

Abstract

Solid-state lithium metal battery with high energy density suffers from a short lifespan owing to the ceaseless generation of inactive lithium and electrically-isolated lithium at electrode/electrolyte interface. One strategy for interfacial dual modulation is proposed by introducing a KI-modified solid polymer electrolyte (SPE-KI). The utilization of lithium sources is significantly improved through the electrostatic shielding effect of trace K+ and reactivation of the dead lithium by I−/I3− redox couple. Further sensitive in situ/ex situ characterizations and finite element simulations quantify the structural distribution and specific content of solid electrolyte interphase (SEI) generated by KI interfacial dual-modulation. The resulted Li|SPE-KI|LiFePO4 cell displays an excellent cycling performance with 82.7 % capacity retention after 1600 cycles at 2 C. Such interfacial dual-protection strategy stemmed from trace functional additives broadens design horizons for solid-state lithium energy storage.

Original language	English
Article number	103989
Number of pages	9
Journal	Energy Storage Materials
Volume	75
Early online date	5 Jan 2025
DOIs	https://doi.org/10.1016/j.ensm.2024.103989
Publication status	Published - 1 Feb 2025

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Accepted manuscript (ENSM)Accepted author manuscript, 1.44 MBLicence: CC BY-NC-ND

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title = "Interfacial Dual-Modulation via Electrostatic Shielding and Dead Lithium Reactivation for Solid-State Lithium Energy Storage",

abstract = "Solid-state lithium metal battery with high energy density suffers from a short lifespan owing to the ceaseless generation of inactive lithium and electrically-isolated lithium at electrode/electrolyte interface. One strategy for interfacial dual modulation is proposed by introducing a KI-modified solid polymer electrolyte (SPE-KI). The utilization of lithium sources is significantly improved through the electrostatic shielding effect of trace K+ and reactivation of the dead lithium by I−/I3− redox couple. Further sensitive in situ/ex situ characterizations and finite element simulations quantify the structural distribution and specific content of solid electrolyte interphase (SEI) generated by KI interfacial dual-modulation. The resulted Li|SPE-KI|LiFePO4 cell displays an excellent cycling performance with 82.7 \% capacity retention after 1600 cycles at 2 C. Such interfacial dual-protection strategy stemmed from trace functional additives broadens design horizons for solid-state lithium energy storage.",

keywords = "KI additive, Electrostatic shielding, Inactive lithium reclamation, Solid polymer electrolyte",

author = "Ying Wu and Bin Qiu and Jie Huang and Kaiming Huang and Jiaming Wen and Huidong Wei and Peixin Zhang and Chuanxin He and Hongwei Mi",

note = "Funding Information: This work was financially supported by the National Natural Science Foundation of China (Nos. 22078200, 22478248), Guangdong Basic and Applied Basic Research Foundation (Nos. 2023A1515010984) and Shenzhen Science and Technology Program (JCYJ20230808104905011). The Instrumental Analysis Center of Shenzhen University, the National Supercomputing Center in Shenzhen and Testing Technology Center of Materials and Devices in Tsinghua Shenzhen International Graduate School were also gratefully acknowledged. Publisher Copyright: {\textcopyright} 2024",

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doi = "10.1016/j.ensm.2024.103989",

language = "English",

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TY - JOUR

T1 - Interfacial Dual-Modulation via Electrostatic Shielding and Dead Lithium Reactivation for Solid-State Lithium Energy Storage

AU - Wu, Ying

AU - Qiu, Bin

AU - Huang, Jie

AU - Huang, Kaiming

AU - Wen, Jiaming

AU - Wei, Huidong

AU - Zhang, Peixin

AU - He, Chuanxin

AU - Mi, Hongwei

N1 - Funding Information: This work was financially supported by the National Natural Science Foundation of China (Nos. 22078200, 22478248), Guangdong Basic and Applied Basic Research Foundation (Nos. 2023A1515010984) and Shenzhen Science and Technology Program (JCYJ20230808104905011). The Instrumental Analysis Center of Shenzhen University, the National Supercomputing Center in Shenzhen and Testing Technology Center of Materials and Devices in Tsinghua Shenzhen International Graduate School were also gratefully acknowledged. Publisher Copyright: © 2024

PY - 2025/2/1

Y1 - 2025/2/1

N2 - Solid-state lithium metal battery with high energy density suffers from a short lifespan owing to the ceaseless generation of inactive lithium and electrically-isolated lithium at electrode/electrolyte interface. One strategy for interfacial dual modulation is proposed by introducing a KI-modified solid polymer electrolyte (SPE-KI). The utilization of lithium sources is significantly improved through the electrostatic shielding effect of trace K+ and reactivation of the dead lithium by I−/I3− redox couple. Further sensitive in situ/ex situ characterizations and finite element simulations quantify the structural distribution and specific content of solid electrolyte interphase (SEI) generated by KI interfacial dual-modulation. The resulted Li|SPE-KI|LiFePO4 cell displays an excellent cycling performance with 82.7 % capacity retention after 1600 cycles at 2 C. Such interfacial dual-protection strategy stemmed from trace functional additives broadens design horizons for solid-state lithium energy storage.

AB - Solid-state lithium metal battery with high energy density suffers from a short lifespan owing to the ceaseless generation of inactive lithium and electrically-isolated lithium at electrode/electrolyte interface. One strategy for interfacial dual modulation is proposed by introducing a KI-modified solid polymer electrolyte (SPE-KI). The utilization of lithium sources is significantly improved through the electrostatic shielding effect of trace K+ and reactivation of the dead lithium by I−/I3− redox couple. Further sensitive in situ/ex situ characterizations and finite element simulations quantify the structural distribution and specific content of solid electrolyte interphase (SEI) generated by KI interfacial dual-modulation. The resulted Li|SPE-KI|LiFePO4 cell displays an excellent cycling performance with 82.7 % capacity retention after 1600 cycles at 2 C. Such interfacial dual-protection strategy stemmed from trace functional additives broadens design horizons for solid-state lithium energy storage.

KW - KI additive

KW - Electrostatic shielding

KW - Inactive lithium reclamation

KW - Solid polymer electrolyte

UR - https://www.scopus.com/pages/publications/85213891117

U2 - 10.1016/j.ensm.2024.103989

DO - 10.1016/j.ensm.2024.103989

M3 - Article

SN - 2405-8297

VL - 75

JO - Energy Storage Materials

JF - Energy Storage Materials

M1 - 103989

ER -

Interfacial Dual-Modulation via Electrostatic Shielding and Dead Lithium Reactivation for Solid-State Lithium Energy Storage

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