Electrochemical Characterization of Solid-State Polymer Electrolyte

The electrochemical properties of the elastic solid-state polymer electrolyte are investigated using CR2032 coin cells assembled in an Ar-filled glovebox. For the assembly process, the LFP cathodes are used as working electrodes lithium metal is used as the anode, and Celgard 3500 (Celgard LLC, Concord, NC, USA) is used as the separator. The precursor is injected into the separator and the cells are packaged immediately. After that, the assembled cells are heated at 70 °C for 2 h to generate the in situ polymerized LZT/SN-SPE (or SN-SPE). Due to the liquid nature of the precursor, Celgard 3500 separators are applied to all cells to prevent a short circuit in the assembled cells before polymerization. The charge/discharge experiments are carried out on a Neware Battery system with the potential ranges of 2.5–4 V at a current density of 1 C. Li||Li symmetric cells are prepared with an identical method except that LFP is replaced by Li foils (diameter of 12 mm). The Li plating/stripping experiments are measured on a Neware Battery system.

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Wang J., Liao Y., Wu X., Ye L., Wang Z., Wu F, & Lin Z. (2024). In Situ Construction of Elastic Solid-State Polymer Electrolyte with Fast Ionic Transport for Dendrite-Free Solid-State Lithium Metal Batteries. Nanomaterials, 14(5), 433.

Publication 2024

Corresponding Organization :

Other organizations : Guangdong University of Technology, Guangzhou Vocational College of Science and Technology

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Variable analysis

independent variables

Precursor is injected into the separator
Assembled cells are heated at 70 °C for 2 h to generate the in situ polymerized LZT/SN-SPE (or SN-SPE)
Current density of 1 C is used for charge/discharge experiments

dependent variables

Electrochemical properties of the elastic solid-state polymer electrolyte
Charge/discharge characteristics in the potential range of 2.5–4 V
Li plating/stripping behavior

control variables

LFP cathodes are used as working electrodes
Lithium metal is used as the anode
Celgard 3500 is used as the separator
Cells are assembled in an Ar-filled glovebox
Neware Battery system is used for charge/discharge and Li plating/stripping experiments

positive controls

Li||Li symmetric cells are prepared with an identical method except that LFP is replaced by Li foils

negative controls

Not explicitly mentioned

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