Abstract
The synthesis, characterization, and performance of a binder-free negative electrode for a lithium-ion battery, consisting of renewable biopolymer lignin and silicon nanoparticles, are reported. By mixing, coating, and subsequent pyrolization, we fabricated uniformly interconnected core–shell composite films of Si/C directly on the current collector, allowing for the assembly of coin-cells without the need of binder and conductive carbon. An excellent electrochemical performance was observed with a high specific capacity of 1557 mA h g1 and a stable rate performance from 0.18 A g1 to 1.44 A g1. Moreover, the Si–pLig electrode can be reversibly cycled at 0.54 A g1 with 89.3% capacity retention over 100 cycles. We also unveil a beneficial effect of 0.5% polyethylene oxide (PEO) on the morphology and electrochemical behavior of the Si/C composite electrodes.
Original language | English |
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Pages (from-to) | 29308-29313 |
Number of pages | 6 |
Journal | RSC Advances |
Volume | 6 |
Issue number | 35 |
DOIs | |
State | Published - 2016 |
Bibliographical note
Publisher Copyright:© The Royal Society of Chemistry 2016.
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering