A Na ion-selective desalination system utilizing a NASICON ceramic membrane.

Seawater is a virtually unlimited source of minerals and water. Hence, electrodialysis (ED) is an attractive route for selective seawater desalination due to the selectivity of its ion exchange membrane (IEM) toward the target ion. However, a solution-like IEM, which is permeable to water and ions other than the target ion, results in the leakage of water as well as extraction of unwanted ions.

Investigation on the Structure and Properties of NaZrSiPO as a Solid Electrolyte and Its Application in a Seawater Battery.

The ionic conductivity, bend strength, and electrochemical performance in a seawater battery (SWB) of an NaZrSiPO (vA-NASICON) solid electrolyte were compared to those of NaZrSiPO (H-NASICON). vA-NASICON exhibited three times higher total ionic conductivity (8.6 × 10 S/cm) than H-NASICON (2.

Rechargeable Seawater Batteries-From Concept to Applications.

Harvesting energy from natural resources is of significant interest because of their abundance and sustainability. Seawater is the most abundant natural resource on earth, covering two-thirds of the surface. The rechargeable seawater battery is a new energy storage platform that enables interconversion of electrical energy and chemical energy by tapping into seawater as an infinite medium.

Nanocrevasse-Rich Carbon Fibers for Stable Lithium and Sodium Metal Anodes.

Metallic lithium (Li) and sodium (Na) anodes have received great attention as ideal anodes to meet the needs for high energy density batteries due to their highest theoretical capacities. Although many approaches have successfully improved the performances of Li or Na metal anodes, many of these methods are difficult to scale up and thus cannot be applied in the production of batteries in practice. In this work, we introduce nanocrevasses in a carbon fiber scaffold which can facilitate the penetration of molten alkali metal into a carbon scaffold by enhancing its wettability for Li/Na metal.

A Metal-Organic Framework Derived Porous Cobalt Manganese Oxide Bifunctional Electrocatalyst for Hybrid Na-Air/Seawater Batteries.

Spinel-structured transition metal oxides are promising non-precious-metal electrocatalysts for oxygen electrocatalysis in rechargeable metal-air batteries. We applied porous cobalt manganese oxide (CMO) nanocubes as the cathode electrocatalyst in rechargeable seawater batteries, which are a hybrid-type Na-air battery with an open-structured cathode and a seawater catholyte. The porous CMO nanocubes were synthesized by the pyrolysis of a Prussian blue analogue, Mn[Co(CN)]·nHO, during air-annealing, which generated numerous pores between the final spinel-type CMO nanoparticles.