On the Electrochemical Insertion of Mg2+in Na7V4(P2O7)4(PO4) and Na3V2(PO4)3 Host Materials

Author(s):  
Saustin Dongmo ◽  
Fabio Maroni ◽  
Cornelius Gauckler ◽  
Mario Marinaro ◽  
Margret Wohlfahrt-Mehrens

Abstract Next generation energy storage technologies need to be more sustainable and cheaper. Among Post-Li chemistries, Mg batteries are emerging as a possible alternative with desirable features like abundance of Mg on the Earth`s crust and a doubled volumetric capacity with respect to the current Li metal. However, research and development of Mg-batteries is still in its infancy stage and still many hurdles are to be understood and solved. For instance, cathode materials showing high capacities, operating at high potentials and with sufficient fast kinetics need to be designed and developed. Polyanionic materials are a class of sustainable and environmentally friendly materials that emerged as possible Mg2+ hosts. In this work the insertion of Mg cations inside the NASICON Na3V2(PO4)3 and, for the first time, in the mixed phosphate phase Na7V4(P2O7)4(PO4), is reported, structurally and electrochemically characterized.

2020 ◽  
Vol 8 (4) ◽  
pp. 1975-1985 ◽  
Author(s):  
Guanzhou Li ◽  
Zongxiong Huang ◽  
Jinbiao Chen ◽  
Fu Yao ◽  
Jianping Liu ◽  
...  

As one of the most promising next-generation safe and green energy storage technologies, aqueous Zn-ion batteries have attracted considerable attention in recent years.


2019 ◽  
Vol 9 (16) ◽  
pp. 3270 ◽  
Author(s):  
Sesha S. Srinivasan ◽  
Elias K. Stefanakos

Clean energy and fuel storage is often required for both stationary and automotive applications. Some of the clean energy and fuel storage technologies currently under extensive research and development are hydrogen storage, direct electric storage, mechanical energy storage, solar-thermal energy storage, electrochemical (batteries and supercapacitors), and thermochemical storage. The gravimetric and volumetric storage capacity, energy storage density, power output, operating temperature and pressure, cycle life, recyclability, and cost of clean energy or fuel storage are some of the factors that govern efficient energy and fuel storage technologies for potential deployment in energy harvesting (solar and wind farms) stations and on-board vehicular transportation. This Special Issue thus serves the need to promote exploratory research and development on clean energy and fuel storage technologies while addressing their challenges to a practical and sustainable infrastructure.


Author(s):  
Guangchi Sun ◽  
Baozhu Yang ◽  
Gui Yin ◽  
Hanping Zhang ◽  
Qi Liu

Aqueous zinc batteries are considered as one of the most promising energy storage systems for large-scale energy storage and wearable electronics, owing to their low cost and intrinsic safety. However, cathode materials that can reversibly host Zn<sup>2+</sup> are still less. Here, we demonstrate that two N-containing organic compounds, hexamethoxy hexaazatrinaphthylene (HMHATN) and hexaazatrinaphthylene (HATN), used as cathodes can exhibit excellent reversible Zn<sup>2+</sup> storage capability with fast kinetics and the high capacity of 542 and 963 mA h g<sup>-1</sup>, respectively. The Zn//HMHATN and Zn//HATN full batteries display the high energy density of 160 and 221.6 W h kg<sup>-1</sup>, respectively, and long-term cycling stability. Further, we investigate the mechanism of Zn<sup>2+</sup> storage in the cathodes. More importantly, the flexible aqueous Zn//HMHATN and Zn//HATN batteries fabricated also have high capacity, long-term cycling life and impressive energy density, displaying its application prospect in wearable electronics. Our work opens a new system for finding organic cathode materials used in aqueous zinc batteries.


Author(s):  
Ahiud Morag ◽  
Minghao Yu

Multivalent metal batteries are promising large-scale energy storage technologies. This review summarizes the recent progress in the development of layered cathode materials for non-aqueous multivalent metal batteries.


2020 ◽  
Author(s):  
Guangchi Sun ◽  
Baozhu Yang ◽  
Gui Yin ◽  
Hanping Zhang ◽  
Qi Liu

Aqueous zinc batteries are considered as one of the most promising energy storage systems for large-scale energy storage and wearable electronics, owing to their low cost and intrinsic safety. However, cathode materials that can reversibly host Zn<sup>2+</sup> are still less. Here, we demonstrate that two N-containing organic compounds, hexamethoxy hexaazatrinaphthylene (HMHATN) and hexaazatrinaphthylene (HATN), used as cathodes can exhibit excellent reversible Zn<sup>2+</sup> storage capability with fast kinetics and the high capacity of 542 and 963 mA h g<sup>-1</sup>, respectively. The Zn//HMHATN and Zn//HATN full batteries display the high energy density of 160 and 221.6 W h kg<sup>-1</sup>, respectively, and long-term cycling stability. Further, we investigate the mechanism of Zn<sup>2+</sup> storage in the cathodes. More importantly, the flexible aqueous Zn//HMHATN and Zn//HATN batteries fabricated also have high capacity, long-term cycling life and impressive energy density, displaying its application prospect in wearable electronics. Our work opens a new system for finding organic cathode materials used in aqueous zinc batteries.


2020 ◽  
Vol 1 (1) ◽  
pp. 110-115
Author(s):  
Sayed Belal Hashimi ◽  
Hameedullah Zaheb ◽  
Najib Rahman Sabory

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