Issue 14, 2016

Rechargeable dual-metal-ion batteries for advanced energy storage

Abstract

Energy storage devices are more important today than any time before in human history due to the increasing demand for clean and sustainable energy. Rechargeable batteries are emerging as the most efficient energy storage technology for a wide range of portable devices, grids and electronic vehicles. Future generations of batteries are required to have high gravimetric and volumetric energy, high power density, low price, long cycle life, high safety and low self-discharge properties. However, it is quite challenging to achieve the above properties simultaneously in state-of-the-art single metal ion batteries (e.g. Li-ion batteries, Na-ion batteries and Mg-ion batteries). In this contribution, hybrid-ion batteries in which various metal ions simultaneously engage to store energy are shown to provide a new perspective towards advanced energy storage: by connecting the respective advantages of different metal ion batteries they have recently attracted widespread attention due to their novel performances. The properties of hybrid-ion batteries are not simply the superposition of the performances of single ion batteries. To enable a distinct description, we only focus on dual-metal-ion batteries in this article, for which the design and the benefits are briefly discussed. We enumerate some new results about dual-metal-ion batteries and demonstrate the mechanism for improving performance based on knowledge from the literature and experiments. Although the search for hybrid-ion batteries is still at an early age, we believe that this strategy would be an excellent choice for breaking the inherent disadvantages of single ion batteries in the near future.

Graphical abstract: Rechargeable dual-metal-ion batteries for advanced energy storage

Article information

Article type
Perspective
Submitted
27 Jan 2016
Accepted
02 Mas 2016
First published
03 Mas 2016

Phys. Chem. Chem. Phys., 2016,18, 9326-9333

Rechargeable dual-metal-ion batteries for advanced energy storage

H. Yao, Y. You, Y. Yin, L. Wan and Y. Guo, Phys. Chem. Chem. Phys., 2016, 18, 9326 DOI: 10.1039/C6CP00586A

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