Zhao-Karger Zhirong, Fichtner Maximilian
Helmholtz Institute Ulm, Ulm, Germany.
Institute of Nanotechnology, Karlsruhe Institute of Technology, Karlsruhe, Germany.
Front Chem. 2019 Jan 15;6:656. doi: 10.3389/fchem.2018.00656. eCollection 2018.
Rechargeable magnesium (Mg) batteries are an attractive candidate for next-generation battery technology because of their potential to offer high energy density, low cost, and safe use. Despite recent substantial progress achieved in the development of efficient electrolytes, identifying high-performance cathode materials remains a bottleneck for the realization of practical Mg batteries. Due to the strong interaction between the doubly charged Mg ions and the host matrix, most of the conventional intercalation cathodes suffer from low capacity, high voltage hysteresis, and low energy density in Mg based battery systems. Alternatively, the thermodynamically favorable conversion reaction may circumvent the sluggish Mg diffusion kinetics. In this review, the focus will be laid on promising cathodes beyond the typical intercalation-type materials. We will give an overview of the recent emerging Mg systems with conversion-type and organic cathodes.
可充电镁（Mg）电池因其具有提供高能量密度、低成本和安全使用的潜力，是下一代电池技术的一个有吸引力的候选者。尽管最近在高效电解质的开发方面取得了重大进展，但识别高性能阴极材料仍然是实现实用镁电池的一个瓶颈。由于双电荷镁离子与主体基质之间的强相互作用，大多数传统的插层阴极在镁基电池系统中存在容量低、电压滞后高和能量密度低的问题。另外，热力学上有利的转换反应可能会规避缓慢的镁扩散动力学。在这篇综述中，重点将放在典型插层型材料之外的有前景的阴极上。我们将概述最近出现的具有转换型和有机阴极的镁系统。
