Graphene Oxides Used as a New "Dual Role" Binder for Stabilizing Silicon Nanoparticles in Lithium-Ion Battery

Changsheng Shan; Kaifeng Wu; Hung-Ju Yen; Claudia Narvaez Villarrubia; Tom Nakotte; Xiangjie Bo; Ming Zhou; Gang Wu; Hsing-Lin Wang

doi:10.1021/acsami.8b00649

Graphene Oxides Used as a New "Dual Role" Binder for Stabilizing Silicon Nanoparticles in Lithium-Ion Battery

ACS Appl Mater Interfaces. 2018 May 9;10(18):15665-15672. doi: 10.1021/acsami.8b00649. Epub 2018 Apr 30.

Authors

Changsheng Shan¹, Kaifeng Wu², Hung-Ju Yen^{1

3}, Claudia Narvaez Villarrubia¹, Tom Nakotte¹, Xiangjie Bo⁴, Ming Zhou⁴, Gang Wu⁵, Hsing-Lin Wang^{1

6}

Affiliations

¹ Physical Chemistry and Applied Spectroscopy (C-PCS), Chemistry Division , Los Alamos National Laboratory , Los Alamos , New Mexico 87545 , United States.
² State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics , Chinese Academy of Sciences , 457 Zhongshan Road , Dalian 116023 , China.
³ Institute of Chemistry , Academia Sinica , 128 Academia Road, Section 2, Nankang , Taipei 11529 , Taiwan.
⁴ Key Laboratory of Nanobiosensing and Nanobioanalysis at Universities of Jilin Province, Key Laboratory of Polyoxometalate Science of Ministry of Education, National & Local United Engineering Laboratory for Power Batteries, Department of Chemistry , Northeast Normal University , Changchun , Jilin Province 130024 , P.R. China.
⁵ Department of Chemical and Biological Engineering , University at Buffalo, the State University of New York , Buffalo , New York 14260 , United States.
⁶ Department of Materials Science and Engineering , Southern University of Science and Technology , Shenzhen , Guangdong 518055 , China.

PMID: 29683642
DOI: 10.1021/acsami.8b00649

Abstract

For the first time, we report that graphene oxide (GO) can be used as a new "dual-role" binder for Si nanoparticles (SiNPs)-based lithium-ion batteries (LIBs). GO not only provides a graphene-like porous 3D framework for accommodating the volume changes of SiNPs during charging/discharging cycles, but also acts as a polymer-like binder that forms strong chemical bonds with SiNPs through its Si-OH functional groups to trap and stabilize SiNPs inside the electrode. Leveraging this unique dual-role of GO binder, we fabricated GO/SiNPs electrodes with remarkably improved performances as compared to using the conventional polyvinylidene fluoride (PVDF) binder. Specifically, the GO/SiNPs electrode showed a specific capacity of 2400 mA h g^-1 at the 50th cycle and 2000 mA h g^-1 at the 100th cycle, whereas the SiNPs/PVDF electrode only showed 456 mAh g^-1 at the 50th cycle and 100 mAh g^-1 at 100th cycle. Moreover, the GO/SiNPs film maintained its structural integrity and formed a stable solid-electrolyte interphase (SEI) film after 100 cycles. These results, combined with the well-established facile synthesis of GO, indicate that GO can be an excellent binder for developing high performance Si-based LIBs.

Keywords: binder; graphene oxide; lithium-ion battery; nanocomposite; silicon.