Selvam Tharani, Dhinasekaran Durgalakshmi, Subramanian Balakumar, Rajendran Ajay Rakkesh
Functional Nano-Materials (FuN) Laboratory, Department of Physics and Nanotechnology, Faculty of Engineering and Technology, SRM Institute of Science and Technology, Kattankulathur, Tamil Nadu 603203, India.
Department of Medical Physics, Anna University, Chennai, Tamil Nadu 600025, India.
J Phys Chem Lett. 2024 Feb 8;15(5):1338-1346. doi: 10.1021/acs.jpclett.3c03590. Epub 2024 Jan 29.
The improvement of sophisticated cathode materials plays a major role in boosting the efficiency of Zn-ion batteries. These batteries have garnered considerable interest as a result of their excellent energy density and the promise of cost-effective solutions for energy storage. In this work, we present a novel approach to progress the electrochemical investigation of Zn-ion batteries by expanding the interplanar distance of layered hydrated VO/VO heterostructure nanosheets. Electrochemical investigations were conducted to assess the effectiveness of the stacked hydrated VO/VO heterostructure as a cathode component for Zn-ion batteries. The expanded interplanar space as a result of the introduction of water molecules facilitates the insertion/extraction of Zn ions, leading to significantly enhanced electrochemical characteristics. The layered hydrated VO/VO heterostructure exhibited an impressive specific capacity of 330 mAh g at a current density of 0.1 A g, maintaining a capacity retention of approximately 92.3% and a coulombic efficiency of 95.8% even after 2000 cycles.
先进阴极材料的改进在提高锌离子电池效率方面起着主要作用。由于其优异的能量密度以及为储能提供具有成本效益解决方案的前景，这些电池已引起了广泛关注。在这项工作中，我们提出了一种新颖的方法，通过扩大层状水合VO/VO异质结构纳米片的面间距来推进锌离子电池的电化学研究。进行了电化学研究，以评估堆叠的水合VO/VO异质结构作为锌离子电池阴极组件的有效性。由于引入水分子而扩大的面间距有利于锌离子的插入/脱出，从而显著增强了电化学特性。层状水合VO/VO异质结构在电流密度为0.1 A g时表现出令人印象深刻的330 mAh g比容量，即使在2000次循环后仍保持约92.3%的容量保持率和95.8%的库仑效率。
