An integrate and ultra-flexible solid-state lithium battery enabled by in situ polymerized solid electrolyte

Liu，Chen1; Zhu，Fangyan1; Huang，Zhonghan1; Liao，Wenchao1; Guan，Xiang1; Li，Yuchao3; Chen，Dazhu1; Lu，Zhouguang2

2022-04-15

10.1016/j.cej.2022.134644

CHEMICAL ENGINEERING JOURNAL   影响因子和分区

1385-8947

1873-3212

Searching for ultra-safe flexible electrolytes is crucial to the exploitation of flexible solid-state batteries and wearable devices. However, it is very challenging to simultaneously conquer the issues of the elastic electrolyte, including low ionic conductivity, inferior electrolyte/electrode interface compatibility, and unsatisfying cycling stability of the assembled cell. Herein, we developed an elastic PEL electrolyte using poly(butyl acrylate) cross-linked polyethylene glycol and EMIMTFSI with an ultrahigh elongation of 1000%. The PEL-0.1 electrolyte delivers an ionic conductivity of 1.19 × 10 S cm and good flame resistance. The superior interface compatibility between electrodes and electrolyte is realized by the in situ polymerized PEL on cathode and contact stability towards metallic lithium, which facilitates the ion conduction in the solid-state cell and accommodate the electrode volume changes during the charge/discharge processes. The Li/PEL-0.1/Li cell can stable cycle for 300 h at 50 mV. The little difference in the impedance of the tabulate and wire-shaped solid-state batteries at various deformation states demonstrates the good shape conformability and feasibility of flexible PEL electrolyte. The integrated LiFePO/PEL-0.1/Li batteries show excellent cycling stability at all the temperatures of 25 °C, 40 °C and 60 °C. A series of destructive operations on the working pouch cell confirms the superior safety and practicability of the designed electrolyte. The study proposed a promising ultrasafe and flexible electrolyte with outstanding electrochemical performance in the applications of the next-generation flexible solid-state lithium batteries and wearable devices.

Flexible solid state battery In situ polymerization Lithium ion battery Poly(butyl acrylate) Polymer electrolyte

SCI ; EI

英语

其他

National Natural Science of China[21905180,51873108,52177020] ; Key Project of Shenzhen Basic Research["JCYJ20200109141640095","JCYJ20180305124237416"] ; Natural Science of Shandong Province[ZR2019MB053]

Engineering

Engineering, Environmental ; Engineering, Chemical

WOS:000773710200003

ELSEVIER SCIENCE SA

20220411491534

Electrodes ; Flame resistance ; Interface states ; Ionic conduction in solids ; Ionic conductivity ; Lithium compounds ; Polyelectrolytes ; Polyethylenes ; Solid electrolytes ; Solid state devices ; Solid-State Batteries ; Wearable technology

Electricity: Basic Concepts and Phenomena:701.1 ; Secondary Batteries:702.1.2 ; Semiconductor Devices and Integrated Circuits:714.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Organic Polymers:815.1.1 ; Polymer Products:817.1 ; Fires and Fire Protection:914.2 ; Classical Physics; Quantum Theory; Relativity:931 ; High Energy Physics; Nuclear Physics; Plasma Physics:932

ENGINEERING

2-s2.0-85123003764

Scopus

1.Shenzhen Key Laboratory of Polymer Science and Technology,Guangdong Research Center for Interfacial Engineering of Functional Materials,College of Materials Science and Engineering,Shenzhen University,Shenzhen,518055,China
2.Department of Materials Science and Engineering,Guangdong Provincial Key Laboratory of Energy Materials for Electric Power,Southern University of Science and Technology,Shenzhen,518055,China
3.School of Materials Science and Engineering,Liaocheng University,Liaocheng,252059,China

Liu，Chen,Zhu，Fangyan,Huang，Zhonghan,et al. An integrate and ultra-flexible solid-state lithium battery enabled by in situ polymerized solid electrolyte[J]. CHEMICAL ENGINEERING JOURNAL,2022,434.

Liu，Chen.,Zhu，Fangyan.,Huang，Zhonghan.,Liao，Wenchao.,Guan，Xiang.,...&Lu，Zhouguang.(2022).An integrate and ultra-flexible solid-state lithium battery enabled by in situ polymerized solid electrolyte.CHEMICAL ENGINEERING JOURNAL,434.

Liu，Chen,et al."An integrate and ultra-flexible solid-state lithium battery enabled by in situ polymerized solid electrolyte".CHEMICAL ENGINEERING JOURNAL 434(2022).