The present disclosure relates to the field of energy storage materials, and particularly, to an electrolyte and an electrochemical device. The electrolyte includes an additive A and an additive B, the additive A is selected from a group consisting of multi-cyano six-membered N-heterocyclic compounds represented by Formula I-1, Formula I-2 and Formula I-3, and combinations thereof, and the additive B is at least one halogenated cyclic carbonate compound. The electrochemical device includes the above electrolyte. The electrolyte of the present disclosure can effectively passivate surface activity of the positive electrode material, inhibit oxidation of the electrolyte, and effectively reduce gas production of the battery, while an anode SEI film can be formed to avoid a contact between the anode and the electrode and thus to effectively reduce side reactions.

The present disclosure is directed to fluoride (F) ion batteries and F shuttle batteries comprising an anode with a solid electrolyte interphase (SEI) layer, a cathode comprising a core shell structure, and a liquid fluoride battery electrolyte. According to some aspects, the components therein enable discharge and recharge at room-temperature.

The present disclosure is directed to phosphorus based thermal runaway inhibiting (TRI) materials, the synthesis thereof and an electrochemical cell electrolyte containing the phosphorus based materials.

An electrolyte and an electrochemical device, which relates to the field of energy storage materials. The electrolyte includes an additive A, an additive B and an additive C, the additive A selected from a group consisting of multi-cyano six-membered N-heterocyclic compounds represented by Formula I-1, Formula I-2 or Formula I-3, and combinations thereof, the additive B is at least one sulfonate compound, and the additive C is at least one halogenated cyclic carbonate compound. The electrochemical device includes the above electrolyte. The electrolyte of the present disclosure can effectively passivate the surface activity of the positive electrode material, inhibit the oxidation of the electrolyte, and effectively reduce gas production of a battery, meanwhile the electrolyte can be also adsorbed catalytically active of the graphite surface to form a more stable SEI film, thereby effectively reducing side reactions

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The disclosure concerns an electrochemical cell including a cathode, an electrolyte, and an anode including an elemental metal or metal alloy. The electrolyte includes an electrolyte salt, an ionic liquid, and an optional first polymer binder. The electrolyte and/or the anode further includes a protective metal salt in an amount sufficient to (i) reduce or eliminate hydrogen evolution or open circuit side reactions in the electrochemical cell, or (ii) plate out onto or alloy with the anode metal or conductive additives in the anode. The electrochemical cell may further include a first current collector in contact with the cathode, and a second current collector in contact with the anode. The second current collector may include a metal or metal alloy. In such cells, the second current collector may further include the protective metal salt, and the protective metal salt may plate out onto or alloy with the metal or metal alloy of the second current collector.

A lithium metal battery includes: a positive electrode, a negative electrode including lithium, a liquid electrolyte disposed between the positive electrode and the negative electrode, and a protective layer disposed on at least a portion of the negative electrode, wherein the protective layer includes a first polymer selected from at least one of a poly(vinyl alcohol) and a poly(vinyl alcohol) blend.

A nonaqueous electrolyte primary battery with improved storage properties at high temperatures and excellent reliability, and a method for producing the battery are provided. The nonaqueous electrolyte primary battery includes a negative electrode containing metallic lithium or a lithium alloy, a positive electrode, a separator, and a nonaqueous electrolyte solution. The nonaqueous electrolyte solution contains at least LiClO.sub.4 as an electrolyte and 0.1 to 5% by mass of LiB(C.sub.2O.sub.4).sub.2.

The present invention is directed towards phosphorous containing flame retarding materials including a triazine moiety and an electrolyte for electrochemical cells containing the same.

A lithium primary battery includes a positive electrode, a negative electrode, and a non-aqueous electrolyte, wherein the positive electrode includes a positive electrode mixture including manganese dioxide, the negative electrode includes at least one of a metal lithium and a lithium alloy, the non-aqueous electrolyte includes an isocyanate compound as a first component, and at least one of a cyclic imide compound and a phthalic acid ester compound as a second component, the non-aqueous electrolyte has an isocyanate compound concentration of 5 mass % or less.

This application provides an electrolyte and an electrochemical device, wherein the electrolyte comprises an additive A and an additive B, the additive A is present in an amount of 0.001% to 10% by mass in the electrolyte, and the additive B is present in an amount of 0.1% to 10% by mass in the electrolyte. This application can improve the cycle performance and storage performance of the electrochemical device, especially the cycle performance and storage performance of the electrochemical device under high temperature and high voltage conditions.