Abstract: The present invention provides an electrode active composition represented by formula (I). Li1+xMnaNibO2+x.LiyCoyO2y.D*C (I), wherein x>0, 0<y<0.1, a+b=1, 1.2?a/b?3.0; and D and C are optional dopants and coating agents that contain no cobalt element. The active compositions of Formula (I) exhibit electrochemical properties comparable to those with a higher cobalt amount, such as NCM523 electrode material (LiNi0.5Co0.2Mn0.3O2).

Abstract: The present invention provides an electrode active composition represented by formula (I). Li1+xMnaNibO2+x.LiyCoyO2y.D*C (I), wherein x>0, 0<y<0.1, a+b=1, 1.2?a/b?3.0; and D and C are optional dopants and coating agents that contain no cobalt element. The active compositions of Formula (I) exhibit electrochemical properties comparable to those with a higher cobalt amount, such as NCM523 electrode material (LiNi0.5Co0.2Mn0.3O2).

Abstract: The present invention provides a cost-effective method of synthesizing phosphate salt of a metal M such as Fe and Mn that can be used for electrode active material of a lithium secondary battery. An oxidization-precipitation reaction is carried out on metal such as Fe(II) and Mn(II) to produce phosphate salt and hydroxide of the metal oxidized e.g. Fe(III) and Mn(III). With overdosed phosphoric acid, hydroxide of the oxidized metal is then converted to a phosphate salt. The invention also provides a method of preparing “wet” phosphate salt nanoparticles and their application in the synthesis of a cathode material. The present invention exhibits numerous technical merits such as lower cost, easier operation, and being environmentally friendly.

Abstract: The present invention provides a cost-effective method of synthesizing phosphate salt of a metal M such as Fe and Mn that can be used for electrode active material of a lithium secondary battery. An oxidization-precipitation reaction is carried out on metal such as Fe(II) and Mn(II) to produce phosphate salt and hydroxide of the metal oxidized e.g. Fe(III) and Mn(III). With overdosed phosphoric acid, hydroxide of the oxidized metal is then converted to a phosphate salt. The invention also provides a method of preparing “wet” phosphate salt nanoparticles and their application in the synthesis of a cathode material. The present invention exhibits numerous technical merits such as lower cost, easier operation, and being environmentally friendly.

Abstract: The present invention provides a cost-effective method of synthesizing phosphate salt of a metal such as Fe and Mn that can be used for electrode active material of a lithium secondary battery. A precipitation reaction is first carried out to produce a solid salt of the metal having a lower valence value, e.g. Fe(II) and Mn(II). The solid salt is then purified before it is oxidized to form the target phosphate salt of the metal having a higher valence value, e.g. Fe(III) and Mn(III). The invention exhibits numerous technical merits such as easier operation, higher purity, and less consumption of washing water, among others.

Abstract: The present invention provides a cost-effective method of synthesizing phosphate salt of a metal such as Fe and Mn that can be used for electrode active material of a lithium secondary battery. A precipitation reaction is first carried out to produce a solid salt of the metal having a lower valence value, e.g. Fe(II) and Mn(II). The solid salt is then purified before it is oxidized to form the target phosphate salt of the metal having a higher valence value, e.g. Fe(III) and Mn(III). The invention exhibits numerous technical merits such as easier operation, higher purity, and less consumption of washing water, among others.

Abstract: A method of producing electrode active materials includes generating a source material of titanium (Ti) and a source material of iron (Fe) from an ilmenite, and performing a operation to the source material of Fe and the source material of Ti. The operation includes determining a content of Fe or Ti in the source material of Fe or Ti, preparing an intermediate mixture having the source material of Fe or Ti and other required source materials, ball-milling and drying the intermediate mixture, and sintering the intermediate mixture to form the electrode active materials.

Abstract: In one aspect, a method of synthesizing a phosphorous active electrode composite material AMPO4 is disclosed. M is a first element selected from a group of transitional metals, such as iron (Fe), manganese (Mn), and others, and A is a second element selected from a group consisting of lithium (Li), sodium (Na), potassium (K) and a mixture thereof. The method includes: forming a phosphate composite from a phosphorus source material and a first source material comprising the first element M; mixing the phosphate composite with a second source material comprising the second element A to form an intermediate mixture with A:M:P=1.03-1.1:1:1 by molar ratio; ball-milling and drying the intermediate mixture; and sintering the intermediate mixture to form the phosphorous composite active electrode material. The first source material and the metalloid source material are low cost by-products respectively obtained in other processes.

Abstract: A method of producing electrode active materials includes generating a source material of titanium (Ti) and a source material of iron (Fe) from an ilmenite, and performing a operation to the source material of Fe and the source material of Ti. The operation includes determining a content of Fe or Ti in the source material of Fe or Ti, preparing an intermediate mixture having the source material of Fe or Ti and other required source materials, ball-milling and drying the intermediate mixture, and sintering the intermediate mixture to form the electrode active materials.

Abstract: In one aspect, a method of synthesizing a phosphorous active electrode composite material AMPO4 is disclosed. M is a first element selected from a group of transitional metals, such as iron (Fe), manganese (Mn), and others, and A is a second element selected from a group consisting of lithium (Li), sodium (Na), potassium (K) and a mixture thereof. The method includes: forming a phosphate composite from a phosphorus source material and a first source material comprising the first element M; mixing the phosphate composite with a second source material comprising the second element A to form an intermediate mixture with A:M:P=1.03-1.1:1:1 by molar ratio; ball-milling and drying the intermediate mixture; and sintering the intermediate mixture to form the phosphorous composite active electrode material. The first source material and the metalloid source material are low cost by-products respectively obtained in other processes.