Battelle Memorial Institute

Guosheng Li

Vincent L Sprenkle

Jin Yong Kim

Xiaochuan Lu

Jun Liu

John Patrick Lemmon

Kerry D Meinhardt

Yuyan Shao

Tianbiao Liu

Curt A Lavender

Jun Cui

David Matthew Reed

Evgueni Polikarpov

Jung Pyung Choi

Minyuan M Li

Rechargeable batteries include a NiFecathode where 0≤y≤1, an anode comprising a current collector, a porous separator positioned between the cathode and the anode, and an electrolyte comprising MAlX, wherein M is Na, Li, K, or a combination thereof, and X is Cl, Br, I, or a combination thereof, and wherein the electrolyte is a solid at temperatures less than 50° C. The batteries are temperature activated. The electrolyte temperature is increased above its melting point while charging and reduced below the melting point for energy storage, such as seasonal energy storage. The electrolyte temperature is increased above the melting point again to discharge the battery.

Seasonal energy storage technologies based on rechargeable batteries

A dense &#x3b2;&#x2033;-alumina/zirconia composite solid electrolyte and process for fabrication are disclosed. The process allows fabrication at temperatures at or below 1600&#xb0; C. The solid electrolytes include a dense composite matrix of &#x3b2;&#x2033;-alumina and zirconia, and one or more transition metal oxides that aid the conversion and densification of precursor salts during sintering. The composite solid electrolytes find application in sodium energy storage devices and power-grid systems and devices for energy applications.

Process for fabrication of enhanced &#x3b2;&#x2033;-alumina solid electrolytes for energy storage devices and energy applications

An energy storage device comprising a cathode comprising:

Na&#x2014;FeClZEBRA type battery

Electrolytes for Mg-based energy storage devices can be formed from non-nucleophilic Mgsources to provide outstanding electrochemical performance and improved electrophilic susceptibility compared to electrolytes employing nucleophilic sources. The instant electrolytes are characterized by high oxidation stability (up to 3.4 V vs Mg), improved electrophile compatibility and electrochemical reversibility (up to 100% coulombic efficiency). Synthesis of the Mgelectrolytes utilizes inexpensive and safe magnesium dihalides as non-nucleophilic Mgsources in combination with Lewis acids, MRX(for 3&#x2267;a&#x2267;1). Furthermore, addition of free-halide-anion donors can improve the coulombic efficiency of Mg electrolytes from nucleophilic or non-nucleophilic Mgsources.

Magnesium-based energy storage systems and methods having improved electrolytes

Embodiments of a solid-state electrolyte comprising magnesium borohydride, polyethylene oxide, and optionally a Group IIA or transition metal oxide are disclosed. The solid-state electrolyte may be a thin film comprising a dispersion of magnesium borohydride and magnesium oxide nanoparticles in polyethylene oxide. Rechargeable magnesium batteries including the disclosed solid-state electrolyte may have a coulombic efficiency &#x2267;95% and exhibit cycling stability for at least 50 cycles.

Solid-state rechargeable magnesium battery

A scalable process is detailed for forming bulk quantities of high-purity &#x3b1;-MnBi phase materials suitable for fabrication of MnBi based permanent magnets.

Process for preparing scalable quantities of high purity manganese bismuth magnetic materials for fabrication of permanent magnets

A new battery configuration and process are detailed. The battery cell includes a solid electrolyte configured with an engineered metallization layer that distributes sodium across the surface of the electrolyte extending the active area of the cathode in contact with the anode during operation. The metallization layer enhances performance, efficiency, and capacity of sodium batteries at intermediate temperatures at or below about 200&#xb0; C.

Metallization pattern on solid electrolyte or porous support of sodium battery process

Sodium energy storage devices employing aspects of both ZEBRA batteries and traditional Na&#x2014;S batteries can perform better than either battery alone. The hybrid energy storage devices described herein can include a sodium anode, a molten sodium salt catholyte, and a positive electrode that has active species containing sulfur. Additional active species can include a transition metal source and NaCl. As a product of the energy discharge process, NaSforms in which x is less than three.

Growing community of inventors

Richland, WA, United States of America

Guosheng Li