Abstract: This application provides a positive active material, a positive electrode plate, an electrochemical energy storage apparatus, and an apparatus. The positive active material is LixNiyCozMkMepOrAm or LixNiyCozMkMepOrAm whose surface is provided with a coating layer. The positive active material is secondary particles, and a particle size Dn10 of the positive active material satisfies: 0.5 ?m?Dn10?3 ?m. In this application, particle morphology of the positive active material and the amount of micro powder in the positive active material are properly controlled, to effectively reduce side reactions between the positive active material and an electrolyte, decrease gas production of the electrochemical energy storage apparatus, and improve storage performance of the electrochemical energy storage apparatus without deteriorating energy density, cycle performance and rate performance of the electrochemical energy storage apparatus.

Abstract: The present application relates to the electrochemical field, and in particular, to a positive electrode material, and an electrochemical energy storage apparatus having thereof. The present application provides a positive electrode material, including a substrate. The substrate includes secondary particles containing primary particles. A surface of the substrate is coated with an oxide coating layer. The oxide coating layer comprises a coating element, and the coating element is selected from one or more of Al, Ba, Zn, Ti, Zr, Mg, W, Y, Si, Sn, B, Co, or P. The electrochemical energy storage apparatus comprises the foregoing positive electrode material.

Abstract: Methods, apparatus, computer program product and computer readable medium are disclosed for authentication. A method comprises: sending an authentication request to a relying party, wherein the authentication request comprises a voice authentication command of a user; receiving from an identity provider at least one first challenge message with respective randomly generated verification code and respective first randomly generated challenge style; and sending at least one voice verification code to the identity provider, wherein the at least one voice verification code is pronounced by the user in the light of the respective randomly generated verification code and the respective first randomly generated challenge style.

Abstract: Methods, apparatus, computer program product and computer readable medium are disclosed for authentication. A method comprises: sending an authentication request to a relying party, wherein the authentication request comprises a voice authentication command of a user; receiving from an identity provider at least one first challenge message with respective randomly generated verification code and respective first randomly generated challenge style; and sending at least one voice verification code to the identity provider, wherein the at least one voice verification code is pronounced by the user in the light of the respective randomly generated verification code and the respective first randomly generated challenge style.