Carbon dioxide removal using lithium borate is generally described.

A method of preparing a positive electrode active material for a secondary battery is provided, which includes preparing a lithium composite transition metal oxide, and mixing the lithium composite transition metal oxide and a metal borate compound and performing a heat treatment to form a coating portion on surfaces of particles of the lithium composite transition metal oxide.

The positive electrode active material prepared includes lithium composite transition metal oxide particles, and a coating portion formed on surfaces of the lithium composite transition metal oxide particles, wherein the coating portion includes lithium (Li)-metal borate.

A method of preparing a positive electrode active material for a secondary battery is provided, which includes preparing a lithium composite transition metal oxide, and mixing the lithium composite transition metal oxide and a metal borate compound and performing a heat treatment to form a coating portion on surfaces of particles of the lithium composite transition metal oxide.

The positive electrode active material prepared includes lithium composite transition metal oxide particles, and a coating portion formed on surfaces of the lithium composite transition metal oxide particles, wherein the coating portion includes lithium (Li)-metal borate.

A positive electrode active material includes a core and a coating disposed on at least a portion of a surface of the core. The core includes a lithium metal oxide, a lithium metal phosphate, or a combination thereof. The coating includes a compound according to the formula Li.sub.mM.sup.1.sub.nX.sub.p, wherein M.sup.1, X, m, n and p are as defined herein. Also, an electrochemical cell including the positive electrode active material, and methods for the manufacture of the positive electrode active material and the electrochemical cell.

A composition suitable for chemical mechanical polishing a substrate can comprise abrasive particles, a multi-valent metal borate, at least one oxidizer and a solvent. The composition can polish a substrate with a high material removal rate and a very smooth surface finish.

A composition suitable for chemical mechanical polishing a substrate can comprise abrasive particles, a multi-valent metal borate, at least one oxidizer and a solvent. The composition can polish a substrate with a high material removal rate and a very smooth surface finish.

A nickel hydroxide includes stacked nickel hydroxide layers. Each of the nickel hydroxide layers includes Ni.sup.2+ and OH.sup.. At least one of the nickel hydroxide layers further includes a type of polyatomic anions. The polyatomic anions include a type of anions that are not SO.sub.4.sup.2 or CO.sub.3.sup.2.

The present invention relates to a positive active material for lithium secondary battery, its manufacturing method, and lithium secondary battery including the same, and it provides that a positive active material for lithium secondary battery, comprising: a core and a coating layer, wherein, the core is lithium metal oxide, the coating layer comprises boron, the boron compound in the coating layer comprises a lithium boron oxide and a boron oxide, the lithium boron oxide is included 70 wt % or more and 99 wt % in the entire coating layer, the lithium boron oxide comprises Li.sub.2B.sub.4O.sub.7, with respect to the lithium boron oxide 100 wt %, the content of Li.sub.2B.sub.4O.sub.7 is 55 wt % or more and 99 wt % or less.

Crystalline NH.sub.4Be.sub.2BO.sub.3F.sub.2 or Be.sub.2BO.sub.3F (abbreviated as BBF) has nonlinear optical effect, is not deliquescent in the air, is chemically stable. They can be used in a variety of nonlinear optical fields and will pioneer the nonlinear optical applications in the deep UV band.

A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), and a glassy coating layer formed on surfaces of particles of the lithium composite transition metal oxide, wherein, in the lithium composite transition metal oxide, an amount of the nickel (Ni) in a total amount of transition metals is 60 mol % or more, and an amount of the manganese (Mn) is greater than an amount of the cobalt (Co), and the glassy coating layer includes a glassy compound represented by Formula 1.
Li.sub.aM.sup.1.sub.bO.sub.c[Formula 1] wherein, M.sup.1 is at least one selected from the group consisting of boron (B), aluminum (Al), silicon (Si), titanium (Ti), and phosphorus (P), and 1a4, 1b8, and 1c20.