Details

Autor(en) / Beteiligte

• Hong, Dong Gi
• Baik, Ji-Hoon
• Kim, Sangwan
• Lee, Jong-Chan

Titel

Solid polymer electrolytes based on polysiloxane with anion-trapping boron moieties for all-solid-state lithium metal batteries

Ist Teil von

• Polymer (Guilford), 2022-02, Vol.240, p.124517, Article 124517

Ort / Verlag

Kidlington: Elsevier Ltd

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Cross-linked solid polymer electrolytes (SPEs) based on ion-conducting poly(ethylene glycol) (PEG), flexible polysiloxane, and anion-trapping boron cross-linker (BPC) were prepared via thiol-ene click reaction for lithium metal batteries. Various thermal and electrochemical properties of SPEs were systematically investigated by varying the content of BPC. Thermally stable free-standing SPE systems could be obtained due to the cross-linked structure, while relatively high ionic conductivity of about 1.3 × 10−4 S cm−1 at 60 °C was obtained at the same time by the flexible polysiloxane moiety. The boron moiety in BPC could increase the lithium ion transference number compared to the corresponding boron-free SPE due to the anion-trapping capability of boron atom. The formation and growth of lithium dendrites were effectively suppressed by the anion-trapping capability and mechanically stable cross-linked structure of the SPE. [Display omitted] •Novel solid electrolytes (CSPE-Bs) based on polysiloxane and boron cross-linker is reported.•CSPE-Bs are thermally and electrochemically stable.•CSPE-B60 shows ionic conductivity of 1.3 × 10−4 S cm−1 at 60 °C.•CSPE-B60 shows lithium ion transference number of 0.35.•Excellent cycle stability is achieved in V2O5/Li cells.