Issue 44, 2016

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

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. 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.

Graphical abstract: Enhancing cycling durability of Li-ion batteries with hierarchical structured silicon–graphene hybrid anodes

Article information

Article type
Paper
Submitted
04 Oct 2016
Accepted
21 Oct 2016
First published
21 Oct 2016

Phys. Chem. Chem. Phys., 2016,18, 30677-30685

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

M. J. Loveridge, M. J. Lain, Q. Huang, C. Wan, A. J. Roberts, G. S. Pappas and R. Bhagat, Phys. Chem. Chem. Phys., 2016, 18, 30677 DOI: 10.1039/C6CP06788C

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