Modified KBBF-like Material for Energy Storage Applications: ZnNiBO3(OH) with Enhanced Cycle Life

Iftikhar Hussain; Tanveer Hussain; Muhammad Ahmad; Xiaoxia Ma; Muhammad Sufyan Javed; Charmaine Lamiel; Yatu Chen; Rajeev Ahuja; Kaili Zhang

doi:10.1021/acsami.1c23583

Modified KBBF-like Material for Energy Storage Applications: ZnNiBO₃(OH) with Enhanced Cycle Life

ACS Appl Mater Interfaces. 2022 Feb 16;14(6):8025-8035. doi: 10.1021/acsami.1c23583. Epub 2022 Feb 1.

Authors

Iftikhar Hussain¹, Tanveer Hussain^{2

3}, Muhammad Ahmad¹, Xiaoxia Ma¹, Muhammad Sufyan Javed⁴, Charmaine Lamiel⁵, Yatu Chen¹, Rajeev Ahuja⁶, Kaili Zhang¹

Affiliations

¹ Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong.
² School of Chemical Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia.
³ School of Science and Technology, University of New England, Armidale, New South Wales 2351, Australia.
⁴ School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, P. R. China.
⁵ Department of Chemical Engineering, University of Wyoming, Laramie, Wyoming 82071, United States.
⁶ Condensed Matter Theory Group, Department of Physics and Astronomy, Uppsala University, Box 516, S-75120 Uppsala, Sweden.

PMID: 35104095
DOI: 10.1021/acsami.1c23583

Abstract

Not only are new and novel materials sought for electrode material development, but safe and nontoxic materials are also highly being intensively investigated. Herein, we prepare ZnNiBO₃(OH) (ZNBH), a modified and Be-free KBe₂BO₃F₂ (KBBF) family member as an effective electrode material. The novel ZNBH resembles the KBBF structure but with reinforced structure and bonding, in addition to well-incorporated conductive metals benefiting supercapacitor applications. The enhanced electronic properties of ZNBH are further studied by means of density functional theory calculations. The as-prepared ZNBH electrode material exhibits a specific capacity of 746 C g^-1 at a current density of 1 A g^-1. A hybrid supercapacitor (HSC) device is fabricated and successfully illuminated multiple color LEDs. Interestingly, even after being subjected to long charge-discharge for 10 000 cycles, the ZNBH//AC HSC device retains 97.2% of its maximum capacity, indicating the practicality of ZNBH as an electrode material.

Keywords: Be-free KBBF; ZnNiBO3(OH); cycle stability; high-energy density; nontoxic KBBF.