Designed Synthesis of Co2VO4 Nanodiscs with Large Aspect Ratios To Achieve a High-Capacity Enhancement of 20.2% for Photorechargeable Zinc Ion Batteries
Shilei Wu, Muhammad Arif, Guocai Fan, Amjad Nisar, Mashkoor Ahmad, Ting Zhu* and Xiaobo Feng*,
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引用次数: 0
Abstract
The overall performance of the photorechargeable batteries (PRBs) have been restricted by poor light adsorption, sluggish kinetics of photoelectrons and holes, and inevitable photocorrosion of the electrodes. Herein, cobalt vanadate (Co2VO4) nanodiscs with a large aspect ratio (∼8.9) were prepared, which showed a maximum surface photovoltage of 188 mV with good light absorption, leading to enhanced photocurrent and reduced resistance upon light irradiation. The assembled zinc ion batteries (ZIBs) delivered a specific capacity of 107.06 mAh g–1 at 1 A g–1 under light, corresponding to a light enhancement of 20.2%. A capacity retention of 67.7% was obtained after 300 cycles, demonstrating an alleviated photocorrosion.
光可充电电池（PRBs）的整体性能受到光吸附性能差、光电子和空穴动力学缓慢以及不可避免的光腐蚀等因素的制约。本文制备了具有大宽高比（~ 8.9）的钒酸钴（Co2VO4）纳米片，其最大表面光电压为188 mV，具有良好的光吸收，从而增强了光电流，降低了光照射时的电阻。组装锌离子电池（zib）在1 a g-1光下的比容量为107.06 mAh g-1，对应于光增强20.2%。300次循环后，容量保持率为67.7%，表明光腐蚀得到了缓解。
期刊介绍：
Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.
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