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Cited by 481

The DOI matches its Crossref record; 47 of the 47 references it cites were found in a registry or an index.

A Commercial Conducting Polymer as Both Binder and Conductive Additive for Silicon Nanoparticle-Based Lithium-Ion Battery Negative Electrodes

Open access
Higgins, Thomas M., Park, Sang-Hoon, King, Paul J., Zhang, Chuanfang (John), McEvoy, Niall, Berner, Nina C., Daly, Dermot, Shmeliov, Aleksey, Khan, Umar, Duesberg, Georg, Nicolosi, Valeria, Coleman, Jonathan N.·2016·ACS Nano
DOI 10.1021/acsnano.6b00218
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Abstract

This work describes silicon nanoparticle-based lithium-ion battery negative electrodes where multiple nonactive electrode additives (usually carbon black and an inert polymer binder) are replaced with a single conductive binder, in this case, the conducting polymer PEDOT: PSS. While enabling the production of well-mixed slurry-cast electrodes with high silicon content (up to 95 wt %), this combination eliminates the well-known occurrence of capacity losses due to physical separation of the silicon and traditional inorganic conductive additives during repeated lithiation/delithiation processes. Using an in situ secondary doping treatment of the PEDOT: PSS with small quantities of formic acid, electrodes containing 80 wt % SiNPs can be prepared with electrical conductivity as high as 4.2 S/cm. Even at the relatively high areal loading of 1 mg/cm(2), this system demonstrated a first cycle lithiation capacity of 3685 mA·h/g (based on the SiNP mass) and a first cycle efficiency of ∼78%. After 100 repeated cycles at 1 A/g this electrode was still able to store an impressive 1950 mA·h/g normalized to Si mass (∼75% capacity retention), corresponding to 1542 mA·h/g when the capacity is normalized by the total electrode mass. At the maximum electrode thickness studied (∼1.5 mg/cm(2)), a high areal capacity of 3 mA·h/cm(2) was achieved. Importantly, these electrodes are based on commercially available components and are produced by the standard slurry coating methods required for large-scale electrode production. Hence, the results presented here are highly relevant for the realization of commercial LiB negative electrodes that surpass the performance of current graphite-based negative electrode systems.

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Metadata

Authors
Higgins, T. M., Park, S.-H., King, P. J., Zhang, C. (., McEvoy, N., Berner, N. C., Daly, D., Shmeliov, A., Khan, U., Duesberg, G., Nicolosi, V., & Coleman, J. N.
Venue
ACS Nano
Publisher
American Chemical Society (ACS)
Published
2016-03-08
Volume
10
Issue
3
Pages
3702-3713
ISSN
  • 1936-0851 (ISSN-L)
  • 1936-086X
DOI
10.1021/acsnano.6b00218
OpenAlex
W2292819900
Cited by
481
References
47
FWCI
32.02
Type
journal article
Language
en
Open access
green

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