Layer-by-layer inkjet printing GO film and Ag nanoparticles supported nickel cobalt layered double hydroxide as a flexible and binder-free electrode for supercapacitors

Xueying Li; Yunhe Zhao; Jing Yu; Qi Liu; Rongrong Chen; Hongsen Zhang; Dalei Song; Rumin Li; Jingyuan Liu; Jun Wang

doi:10.1016/j.jcis.2019.09.063

Layer-by-layer inkjet printing GO film and Ag nanoparticles supported nickel cobalt layered double hydroxide as a flexible and binder-free electrode for supercapacitors

J Colloid Interface Sci. 2019 Dec 1:557:691-699. doi: 10.1016/j.jcis.2019.09.063. Epub 2019 Sep 18.

Authors

Xueying Li¹, Yunhe Zhao¹, Jing Yu², Qi Liu³, Rongrong Chen⁴, Hongsen Zhang⁵, Dalei Song¹, Rumin Li³, Jingyuan Liu⁶, Jun Wang⁷

Affiliations

¹ Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, PR China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China.
² Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, PR China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China. Electronic address: jing.yu@hrbeu.edu.cn.
³ Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, PR China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China; Harbin Engineering University Capital Management Co. Ltd, Harbin 150001, PR China.
⁴ Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, PR China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China; Institute of Advanced Marine Materials, Harbin Engineering University, 150001, PR China.
⁵ Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, PR China.
⁶ Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, PR China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China. Electronic address: liujingyuan1004@hrbeu.edu.cn.
⁷ Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, PR China; College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, PR China; Harbin Engineering University Capital Management Co. Ltd, Harbin 150001, PR China; Institute of Advanced Marine Materials, Harbin Engineering University, 150001, PR China.

PMID: 31563059
DOI: 10.1016/j.jcis.2019.09.063

Abstract

Inkjet printing is an attractive technique in the field of flexible electronics due to the direct writing, digital controls and non-contact operation process. In this work, we successfully printed graphite oxide and Ag nanoparticles on the substrate of flexible carbon cloth to form a flexible, conductive and hydrophilic layer, which could be used as a new substrate with an electron transport layer of large surface area. In addition, Ni-Co LDH nanosheets as the main active materials were synthesized for improving the electrochemical activity via a convenient electrochemical deposition method. The binder-free Ni-Co LDH/Ag/rGO@CC electrode exhibits outstanding electrochemical performance along with a high capacity of 173 mA h g^-1 at 1 A g^-1. Moreover, an asymmetric supercapacitor (ASC) was assembled with Ni-Co LDH/Ag/rGO@CC electrode as the positive electrode materials and activated carbon coated CC as the negative electrode materials, showing a high capacity of 95 mA h g^-1 at 0.6 A g^-1, and maximum energy density of 76 Wh kg^-1 at a power density of 480 W kg^-1.

Keywords: Ag nanoparticles; Graphene oxide; Inkjet printing; Nickel-cobalt layered double hydroxide; Supercapacitor.