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铁氧化物作为低成本的离子阴极材料,用于静止储能

Julian Felix Baumgärtner^1,2, Michael Wörle¹, Christoph P Guntlin¹

¹Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, Zürich, CH-8093, Switzerland.

Advanced materials (Deerfield Beach, Fla.)

|July 31, 2023

概括

研究人员开发了一种具有成本效益的合成火类铁 (III) 化 (Pyr-IHF) 用于静止储能. 这些材料显示出出色的容量保留,为低成本的离子电池铺平了道路.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
无机化学无机化学有机化学

背景情况:

铁 (III) 水氧化物 (Pyr-IHF) 由于元素的丰富性和高能量密度,对静态能量存储具有前景.
高合成成本和复杂的阴极架构目前限制了它们在离子电池中的商业应用.

研究的目的:

为Pyr-IHF材料开发一种简单且具有成本效益的合成方法.
研究用于离子电池应用的合成Pyr-IHF的电化学性能和结构性质.

主要方法:

从可溶性铁 (III) 化物前体中溶解-沉合成Pyr-IHF.
操作同步射线X射线衍射以指导选择性合成和研究结构进化.
在高电流密度下进行电化学循环,以评估容量保留和速率能力.

主要成果:

在没有复杂的电极工程的情况下,在1Ag-1的600个循环后实现了>80%的高容量保留.
证明了离子扩散发生在Pyr-IHF结构的3D六角通道内.
确定了水含量对Pyr-IHF速率能力的影响.

结论:

为Pyr-IHF建立了一个具有成本效益的合成路线,解决了商业化的主要障碍.
-IHF表现出优异的长期循环稳定性和快速的离子扩散,适用于低成本的能源存储.
了解结构-属性关系,特别是水含量的作用,对于优化Pyr-IHF性能至关重要.

关键词:

离子电池是一种离子电池.阴极是天主体,它们是天主体.储能储能是一种储能方式.铁氧化物铁氧化物焦化的结构是火化.

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