Enhancing cycling durability of Li-ion batteries with hierarchical structured silicon-graphene hybrid anodes

Melanie J. Loveridge, Michael J. Lain, Qianye Huang, Chaoying Wan, Alexander J. Roberts, George S. Pappas, Rohit Bhagat

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Hybrid anode materials consisting of micro-sized silicon (Si) particles interconnected with few-layer graphene (FLG) nanoplatelets and sodium-neutralized poly (acrylic acid) as a binder were evaluated for Li-ion batteries. Hybrid anode materials consisting of micro-sized silicon (Si) particles interconnected with few-layer graphene (FLG) nanoplatelets and sodium-neutralized poly(acrylic acid) as a binder were evaluated for Li-ion batteries. The hybrid film has demonstrated a reversible discharge capacity of ∼1800 mA h g −1 with a capacity retention of 97% after 200 cycles. The superior electrochemical properties of the hybrid anodes are attributed to a durable, hierarchical conductive network formed between Si particles and the multi-scale carbon additives, with enhanced cohesion by the functional polymer binder. Furthermore, improved solid electrolyte interphase (SEI) stability is achieved from the electrolyte additives, due to the formation of a kinetically stable film on the surface of the Si.
Original languageEnglish
Pages (from-to)30677-30685
Number of pages9
JournalPhysical Chemistry Chemical Physics
Volume18
DOIs
Publication statusPublished - 21 Oct 2016
Externally publishedYes

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