Binder-free cupric-ion containing zinc sulfide nanoplates-like structure for flexible energy storage devices

Iftikhar Hussain; Irum Shaheen; Rabia Ahmad; Ijaz Ali; Khurshid Hussain; Sayed Sajid Hussain; Norah Salem Alsaiari; Khadijah Mohammedsaleh Katubi; Sayed M Eldin; Mohd Zahid Ansari

doi:10.1016/j.chemosphere.2022.137660

Binder-free cupric-ion containing zinc sulfide nanoplates-like structure for flexible energy storage devices

Chemosphere. 2023 Feb:314:137660. doi: 10.1016/j.chemosphere.2022.137660. Epub 2022 Dec 26.

Authors

Affiliations

¹ Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong. Electronic address: [email protected].
² Sabanci University Nanotechnology Research and Application Center, Orta Mah. Tuzla 34956 Istanbul, Turkey.
³ U.S.-Pakistan Center for Advanced Studies in Energy (USPCAS-E), National University of Sciences and Technology (NUST), Islamabad, 44000, Pakistan.
⁴ Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 243, Taiwan.
⁵ Department of Biomedical Engineering, Sungkyunkwan University, Suwon, Republic of Korea.
⁶ Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon, Republic of Korea.
⁷ Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P. O. Box 84428, Riyadh 11671, Saudi Arabia.
⁸ Faculty of Engineering and Technology, Future University in Egypt, New Cairo 11835, Egypt.
⁹ School of Materials Science and Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea. Electronic address: [email protected].

PMID: 36581122
DOI: 10.1016/j.chemosphere.2022.137660

Abstract

Researchers have been enthusiastic about developing high-performance electrode materials based on metal chalcogenides for energy storage applications. Herein, we developed cupric ion-containing zinc sulfide (ZnS:Cu) nanoplates by using a solvothermal approach. The as-synthesized ZnS:Cu nanoplates electrode was characterized and analyzed by using XRD, SEM, TEM, EDS, and XPS. The binder-free flexible ZnS:Cu nanoplates exhibited excellent specific capacitance of 545 F g^-1 at a current density of 1 A g^-1. The CV and GCD measurements revealed that the specific capacitance was mainly attributed to the Faradaic redox mechanism. Further, the binder-free flexible ZnS:Cu nanoplates electrode retained 87.4% along with excellent Coulombic efficiency (99%) after 5000 cycles. The binder-free flexible ZnS:Cu nanoplates exhibited excellent conductivity, specific capacitance, and stability which are beneficial in energy storage systems. These findings will also open new horizons amongst material scientists toward the new direction of electrode development.

Keywords: Capacity; Cu-containing ZnS nanoplates; Electrode; Nanomaterials.