TY - JOUR
T1 - Low-Temperature Treated Lignin as Both Binder and Conductive Additive for Silicon Nanoparticle Composite Electrodes in Lithium-Ion Batteries
AU - Chen, Tao
AU - Zhang, Qinglin
AU - Pan, Jie
AU - Xu, Jiagang
AU - Liu, Yiyang
AU - Al-Shroofy, Mohanad
AU - Cheng, Yang Tse
N1 - Publisher Copyright:
© 2016 American Chemical Society.
PY - 2016/11/30
Y1 - 2016/11/30
N2 - This work demonstrates a high-performance and durable silicon nanoparticle-based negative electrode in which conventional polymer binder and carbon black additive are replaced with lignin. The mixture of silicon nanoparticles and lignin, a low cost, renewable, and widely available biopolymer, was coated on a copper substrate using the conventional slurry mixing and coating method and subsequently heat-treated to form the composite electrode. The composite electrode showed excellent electrochemical performance with an initial discharge capacity of up to 3086 mAh g-1 and retaining 2378 mAh g-1 after 100 cycles at 1 A g-1. Even at a relatively high areal loading of ∼1 mg cm-2, an areal capacity of ∼2 mAh cm-2 was achieved. The composite electrode also displayed excellent rate capability and performance in a full-cell setup. Through synergistic analysis of X-ray photoelectron spectroscopy, Raman, and nanoindentation experiment results, we attribute the amazing properties of Si/lignin electrodes to the judicious choice of heat treatment temperature at 600 °C. At this temperature, lignin undergoes complex compositional change during which a balance between development of conductivity and retaining of polymer flexibility is realized. We hope this work could lead to practicable silicon-based negative electrodes and stimulate the interest in the utilization of biorenewable resources in advanced energy applications.
AB - This work demonstrates a high-performance and durable silicon nanoparticle-based negative electrode in which conventional polymer binder and carbon black additive are replaced with lignin. The mixture of silicon nanoparticles and lignin, a low cost, renewable, and widely available biopolymer, was coated on a copper substrate using the conventional slurry mixing and coating method and subsequently heat-treated to form the composite electrode. The composite electrode showed excellent electrochemical performance with an initial discharge capacity of up to 3086 mAh g-1 and retaining 2378 mAh g-1 after 100 cycles at 1 A g-1. Even at a relatively high areal loading of ∼1 mg cm-2, an areal capacity of ∼2 mAh cm-2 was achieved. The composite electrode also displayed excellent rate capability and performance in a full-cell setup. Through synergistic analysis of X-ray photoelectron spectroscopy, Raman, and nanoindentation experiment results, we attribute the amazing properties of Si/lignin electrodes to the judicious choice of heat treatment temperature at 600 °C. At this temperature, lignin undergoes complex compositional change during which a balance between development of conductivity and retaining of polymer flexibility is realized. We hope this work could lead to practicable silicon-based negative electrodes and stimulate the interest in the utilization of biorenewable resources in advanced energy applications.
KW - anode material
KW - binder-free anode
KW - biorenewable
KW - lignin
KW - lithium-ion battery
KW - silicon-carbon composite
UR - http://www.scopus.com/inward/record.url?scp=85000916358&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85000916358&partnerID=8YFLogxK
U2 - 10.1021/acsami.6b11500
DO - 10.1021/acsami.6b11500
M3 - Article
AN - SCOPUS:85000916358
SN - 1944-8244
VL - 8
SP - 32341
EP - 32348
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 47
ER -