Constructing a multi-functional polymer network for ultra-stable and safe Li-metal batteries

Shilun Gao; Zhenxi Li; Zhen Zhang; Bingrui Li; Xi Chelsea Chen; Guang Yang; Tomonori Saito; Ming Tian; Huabin Yang; Peng Fei Cao

doi:10.1016/j.ensm.2022.11.049

Constructing a multi-functional polymer network for ultra-stable and safe Li-metal batteries

Shilun Gao, Zhenxi Li, Zhen Zhang, Bingrui Li, Xi Chelsea Chen, Guang Yang, Tomonori Saito, Ming Tian, Huabin Yang, Peng Fei Cao

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

25 Scopus citations

Abstract

The practical application of lithium (Li) metal electrodes is impeded by Li dendrite growth and unstable solid electrolyte interphase (SEI). Herein, a multi-grafting polymer network, poly(dimethyl siloxane)-g-[poly(poly(ethylene glycol) methyl ether methacrylate)-r-sodium poly(p-styrene sulfonate)] (PPS), is chemically synthesized from reversible addition-fragmentation chain transfer (RAFT) polymerization. With integrated stretchability, ionic conductivity, and mechanical robustness, it serves a dual role to stabilize the Li electrode. As artificial SEI layer, the PPS enables superior electrochemical performance in half cells, symmetric cells, and full cells (PPS@Li/LiFePO₄, capacity retention of >70% after 600 cycles). Utilized as solid polymer electrolyte (SPE), the all-solid-state Li/SPE/LiFePO₄ full cell delivers excellent cycling performance with an unprecedented capacity retention of 90% over 1,700 cycles at 0.5 C and 81% over 1,000 cycles at 1.0 C. With high-voltage LiNi_0.8Mn_0.1Co_0.1O₂ (NMC811) as cathode, the Li/SPE/NMC811 cell exhibits an initial discharge capacity of 162.2 mAh g⁻¹ with a capacity retention of 72% after 200 cycles. The assembled solid-state Li/SPE/LiFePO₄ pouch cell with SPE exhibits stable cycling performance over 200 cycles with a capacity retention of 75% and still operates well even after curling, folding, and cutting, demonstrating great potential for achieving ultra-safe and high energy density batteries.

Original language	English
Pages (from-to)	214-224
Number of pages	11
Journal	Energy Storage Materials
Volume	55
DOIs	https://doi.org/10.1016/j.ensm.2022.11.049
State	Published - Jan 2023

Funding

S. Gao and Z. Li are supported by the Natural Science Foundation of China ( 21421001 ), China Postdoctoral Science Foundation ( 2021M701769 ), the Natural Science Foundation of Tianjin , China ( 18JCZDJC31400 ), and the MOE Innovation Team ( IRT13022 ). P.-F. Cao acknowledges financial support by Fundamental Research Funds for the Central Universities ( buctrc202222 ). The FT-IR and mechanical characterization of polymer electrolytes were supported as part of the Fast and Cooperative Ion Transport in Polymer-Based Materials (FaCT), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences at Oak Ridge National Laboratory.

Keywords

Artificial solid electrolyte interphase
Elastic polymer network
Lithium-metal batteries
Solid polymer electrolyte

UN SDGs

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

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10.1016/j.ensm.2022.11.049

Cite this

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title = "Constructing a multi-functional polymer network for ultra-stable and safe Li-metal batteries",

abstract = "The practical application of lithium (Li) metal electrodes is impeded by Li dendrite growth and unstable solid electrolyte interphase (SEI). Herein, a multi-grafting polymer network, poly(dimethyl siloxane)-g-[poly(poly(ethylene glycol) methyl ether methacrylate)-r-sodium poly(p-styrene sulfonate)] (PPS), is chemically synthesized from reversible addition-fragmentation chain transfer (RAFT) polymerization. With integrated stretchability, ionic conductivity, and mechanical robustness, it serves a dual role to stabilize the Li electrode. As artificial SEI layer, the PPS enables superior electrochemical performance in half cells, symmetric cells, and full cells (PPS@Li/LiFePO4, capacity retention of >70% after 600 cycles). Utilized as solid polymer electrolyte (SPE), the all-solid-state Li/SPE/LiFePO4 full cell delivers excellent cycling performance with an unprecedented capacity retention of 90% over 1,700 cycles at 0.5 C and 81% over 1,000 cycles at 1.0 C. With high-voltage LiNi0.8Mn0.1Co0.1O2 (NMC811) as cathode, the Li/SPE/NMC811 cell exhibits an initial discharge capacity of 162.2 mAh g−1 with a capacity retention of 72% after 200 cycles. The assembled solid-state Li/SPE/LiFePO4 pouch cell with SPE exhibits stable cycling performance over 200 cycles with a capacity retention of 75% and still operates well even after curling, folding, and cutting, demonstrating great potential for achieving ultra-safe and high energy density batteries.",

keywords = "Artificial solid electrolyte interphase, Elastic polymer network, Lithium-metal batteries, Solid polymer electrolyte",

author = "Shilun Gao and Zhenxi Li and Zhen Zhang and Bingrui Li and Chen, {Xi Chelsea} and Guang Yang and Tomonori Saito and Ming Tian and Huabin Yang and Cao, {Peng Fei}",

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year = "2023",

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doi = "10.1016/j.ensm.2022.11.049",

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AU - Gao, Shilun

AU - Li, Zhenxi

AU - Zhang, Zhen

AU - Li, Bingrui

AU - Chen, Xi Chelsea

AU - Yang, Guang

AU - Saito, Tomonori

AU - Tian, Ming

AU - Yang, Huabin

AU - Cao, Peng Fei

PY - 2023/1

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N2 - The practical application of lithium (Li) metal electrodes is impeded by Li dendrite growth and unstable solid electrolyte interphase (SEI). Herein, a multi-grafting polymer network, poly(dimethyl siloxane)-g-[poly(poly(ethylene glycol) methyl ether methacrylate)-r-sodium poly(p-styrene sulfonate)] (PPS), is chemically synthesized from reversible addition-fragmentation chain transfer (RAFT) polymerization. With integrated stretchability, ionic conductivity, and mechanical robustness, it serves a dual role to stabilize the Li electrode. As artificial SEI layer, the PPS enables superior electrochemical performance in half cells, symmetric cells, and full cells (PPS@Li/LiFePO4, capacity retention of >70% after 600 cycles). Utilized as solid polymer electrolyte (SPE), the all-solid-state Li/SPE/LiFePO4 full cell delivers excellent cycling performance with an unprecedented capacity retention of 90% over 1,700 cycles at 0.5 C and 81% over 1,000 cycles at 1.0 C. With high-voltage LiNi0.8Mn0.1Co0.1O2 (NMC811) as cathode, the Li/SPE/NMC811 cell exhibits an initial discharge capacity of 162.2 mAh g−1 with a capacity retention of 72% after 200 cycles. The assembled solid-state Li/SPE/LiFePO4 pouch cell with SPE exhibits stable cycling performance over 200 cycles with a capacity retention of 75% and still operates well even after curling, folding, and cutting, demonstrating great potential for achieving ultra-safe and high energy density batteries.

AB - The practical application of lithium (Li) metal electrodes is impeded by Li dendrite growth and unstable solid electrolyte interphase (SEI). Herein, a multi-grafting polymer network, poly(dimethyl siloxane)-g-[poly(poly(ethylene glycol) methyl ether methacrylate)-r-sodium poly(p-styrene sulfonate)] (PPS), is chemically synthesized from reversible addition-fragmentation chain transfer (RAFT) polymerization. With integrated stretchability, ionic conductivity, and mechanical robustness, it serves a dual role to stabilize the Li electrode. As artificial SEI layer, the PPS enables superior electrochemical performance in half cells, symmetric cells, and full cells (PPS@Li/LiFePO4, capacity retention of >70% after 600 cycles). Utilized as solid polymer electrolyte (SPE), the all-solid-state Li/SPE/LiFePO4 full cell delivers excellent cycling performance with an unprecedented capacity retention of 90% over 1,700 cycles at 0.5 C and 81% over 1,000 cycles at 1.0 C. With high-voltage LiNi0.8Mn0.1Co0.1O2 (NMC811) as cathode, the Li/SPE/NMC811 cell exhibits an initial discharge capacity of 162.2 mAh g−1 with a capacity retention of 72% after 200 cycles. The assembled solid-state Li/SPE/LiFePO4 pouch cell with SPE exhibits stable cycling performance over 200 cycles with a capacity retention of 75% and still operates well even after curling, folding, and cutting, demonstrating great potential for achieving ultra-safe and high energy density batteries.

KW - Artificial solid electrolyte interphase

KW - Elastic polymer network

KW - Lithium-metal batteries

KW - Solid polymer electrolyte

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JO - Energy Storage Materials

JF - Energy Storage Materials

ER -

Constructing a multi-functional polymer network for ultra-stable and safe Li-metal batteries

Abstract

Funding

Keywords

UN SDGs

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