Hussain Iftikhar, Hussain Tanveer, Ahmad Muhammad, Ma Xiaoxia, Javed Muhammad Sufyan, Lamiel Charmaine, Chen Yatu, Ahuja Rajeev, Zhang Kaili
Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong.
School of Chemical Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia.
ACS Appl Mater Interfaces. 2022 Feb 16;14(6):8025-8035. doi: 10.1021/acsami.1c23583. Epub 2022 Feb 1.
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 ZnNiBO(OH) (ZNBH), a modified and Be-free KBeBOF (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 at a current density of 1 A g. 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.
不仅要寻找新型材料用于电极材料开发，安全无毒的材料也正在受到深入研究。在此，我们制备了ZnNiBO(OH)（ZNBH），它是一种经过改性且不含铍的KBeBOF（KBBF）家族成员，作为一种有效的电极材料。新型ZNBH类似于KBBF结构，但结构和键合得到了强化，此外，良好掺入的导电金属有利于超级电容器应用。通过密度泛函理论计算进一步研究了ZNBH增强的电子性能。所制备的ZNBH电极材料在电流密度为1 A g时的比容量为746 C g。制造了一种混合超级电容器（HSC）装置，并成功点亮了多个彩色发光二极管。有趣的是，即使经过10000次长时间充放电后，ZNBH//AC HSC装置仍保留其最大容量的97.2%，这表明ZNBH作为电极材料具有实用性。
