Inorganic Compounds as Binders for Si-Alloy Anodes | Zendy

Congxiao Wei | Zendy; M. N. Obrovac | Zendy

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Inorganic Compounds as Binders for Si-Alloy Anodes

Author(s) -

Congxiao Wei,

M. N. Obrovac

Publication year - 2021

Publication title -

journal of the electrochemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.258

H-Index - 271

eISSN - 1945-7111

pISSN - 0013-4651

DOI - 10.1149/1945-7111/abdc74

Subject(s) - lithium (medication) , materials science , graphite , alloy , anode , electrode , chemical engineering , coating , monobasic acid , electrolyte , metallurgy , composite material , chemistry , polymer chemistry , medicine , engineering , endocrinology

The inorganic compounds, lithium polysilicate (Li 2 Si 5 O 11 ), sodium polyphosphate ((NaPO 3 ) n ), and lithium phosphate monobasic (H 2 LiPO 4 ) were investigated as the sole binders in Si-alloy and graphite electrodes for Li cells. Surprisingly, the coating quality and cycling performance of Si-alloy anodes with these inorganic binders is similar to those electrodes using the state of the art lithium polyacrylate (LiPAA) organic binder. Graphite electrodes with inorganic binders show good cycling despite having poor coating quality. Graphite electrodes with lithium polysilicate binder have three times the binder volume than expected, indicating that this binder has an open framework microstructure.

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