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水性锌离子电池的金属离子约束层状氧化钒纳米带中双载流子的共插
作者:小柯机器人 发布时间:2022/11/24 16:18:45

扬州大学庞欢团队报道了用于水性锌离子电池(AZIBs)的金属离子约束层状氧化钒纳米带中双载流子的共插。相关研究成果于2022年11月21日发表在国际顶尖学术期刊《德国应用化学》。

具有高理论比容量和开放晶体结构的钒基氧化物是水性锌离子电池(AZIBs)的有前途的阴极。

该文中,受限合成可以将金属离子插入层状氧化钒纳米带的层间间隔中,而不改变原始形态。此外,研究人员获得了一系列基于金属约束纳米带的纳米材料,并描述了层间距对电化学性能的影响。获得的Al2.65V6O13·2.07H2O作为AZIBs阴极的电化学性能显著改善,在1.0A·g-1下的初始容量为571.7mAh·g-1。即使在5.0A·g-1的高电流密度下,初始容量仍可达到205.7mAh·g-1,2000次循环后的高容量保持率为89.2%。

研究表明,金属离子限制的纳米带可以显著改善储能应用,揭示了提高AZIBs电化学性能的新途径。

附:英文原文

Title: Co-intercalation of Dual Charge Carriers in Metal-ion-confining Layered Vanadium Oxide Nanobelts for Aqueous Zinc-Ion Batteries

Author: Tingting Lv, Guoyin Zhu, Shengyang Dong, Qingquan Kong, Yi Peng, Shu Jiang, Guangxun Zhang, Zilin Yang, Shengyang Yang, Xiaochen Dong, Huan Pang, Yizhou Zhang

Issue&Volume: 2022-11-21

Abstract: Vanadium-based oxides with high theoretical specific capacities and open crystal structures are promising cathodes for aqueous zinc-ion batteries (AZIBs). In this work, the confined synthesis can insert metal ions into the interlayer spacing of layered vanadium oxide nanobelts without changing the original morphology. Furthermore, we obtain a series of nanomaterials based on metal-confined nanobelts, and describe the effect of interlayer spacing on the electrochemical performance. The electrochemical properties of the obtained Al2.65V6O13·2.07H2O as cathodes for AZIBs are remarkably improved with a high initial capacity of 571.7 mAh·g1 at 1.0 A·g1. Even at a high current density of 5.0 A·g1, the initial capacity can still reach 205.7 mAh·g1, with a high capacity retention of 89.2% after 2000 cycles. This study demonstrates that nanobelts confined with metal ions can significantly improve energy storage applications, revealing new avenues for enhancing the electrochemical performance of AZIBs.

DOI: 10.1002/anie.202216089

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202216089

期刊信息

Angewandte Chemie:《德国应用化学》,创刊于1887年。隶属于德国化学会,最新IF:12.959
官方网址:https://onlinelibrary.wiley.com/journal/15213773
投稿链接:https://www.editorialmanager.com/anie/default.aspx