Samsung Electronics Co., Ltd.

Samuel Robert Cross

Kyounghwan Kim

Huisu Jeong

Jeongkuk Shon

Joungwon Park

Valentina Lacivita

Yongwoo Shin

Jinsuck Heo

An electrode for a secondary battery includes a current collector; and an active material structure on the current collector, the activate material structure including: at least one first high-density layer, and at least one second high-density layer, the at least one second high-density layer being further away from the current collector as compared to the at least one first high-density layer; and a low-density layer between the at least one first high-density layer and the at least one second high-density layer, wherein a thickness of the at least one second high-density layer is greater than a thickness of the at least one first high-density layer.

Electrode structure for secondary battery, method of manufacturing the same, and secondary battery comprising the same

A positive electrode active material includes a doped lithium nickel phosphate having an olivine structure comprising distorted NiOoctahedra. The dopant is an anion; or a combination of at least two transition metals having different ionic radii; or an anion and a metal cation. The positive electrode active material can be used in a positive electrode for an electrochemical cell.

Positive electrode active material and electrochemical cell comprising the positive electrode active material

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Burlington, MA, United States of America

Samuel Robert Cross