A suspension of a boron containing compound in the form of crystals, powder or granulate in a solvent which contain a carbomer as dispersant. This suspension is very stable, even at high concentrations, and exhibits favourable non-Newtonian viscosity behavior, which makes it suitable in a number of applications, such as for the control of fission reactions with the generation of electric power from nuclear energy.

A compound of cesium fluorooxoborate, a nonlinear optical crystal of cesium fluorooxoborate, and a method of preparation and use thereof. The compound has a chemical formula of CsB.sub.4O.sub.6F and a molecular weight of 291.15. It has a crystal structure, which is prepared by a solid-state synthesis method or a vacuum encapsulation method. The crystal has a chemical formula of CsB.sub.4O.sub.6F and a molecular weight of 291.15. It belongs to an orthorhombic crystal system, with a space group of Pna2.sub.1, crystal cell parameters of a=7.9241 , b=11.3996 , c=6.6638 , and ===90, and a unit cell volume of 601.95 .sup.3. A melt method, high temperature solution method, vacuum encapsulation method, hydrothermal method or room temperature solution method is used to grow the crystal of CsB.sub.4O.sub.6F.

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.

An electrolytic solution includes an additive A and an additive B. The additive A includes at least one of additives represented by Formula I or Formula II:

##STR00001##

The additive B includes at least one of lithium ditluorophosphate, lithiur difluoro(oxalato)borate, or lithium bis(oxalato)borate. The additive A and additive B added in the electrolytic solution can alleviate the voltage drop of the electrochemical device during high-temperature storage, and increase the capacity retention rate of the electrochemical device during high-temperature storage. Moreover, when the electrochemical device is in a fully charged state, the additive A and additive B can implement decomposition reactions at a cathode interface successively to form a double-protected inorganic CEI layer, thereby improving voltage stability of the cathode interface under high potentials.

Carbon dioxide removal using lithium borate is generally described.

A positive electrode active material for a secondary battery contains second particles which are produced by aggregation of primary particles of a lithium transition metal oxide containing Ni and W, and a boron compound present inside and on the surfaces of the secondary particles.

The present invention is directed to a process for the synthesis of alkali metal tetrahydroborates-.sup.10B and amine borane-.sup.10B precursors, such as sodium tetrahydroborate-.sup.10B and triethylamine borane-.sup.10B.

Provided is a secondary battery. The secondary battery includes a positive electrode containing a positive electrode active material, a negative electrode, an electrolyte, and a separator, where the positive electrode active material contains a transition metal element, and a molar ratio of Mn in the transition metal element, r(Mn), satisfies 0.3?r(Mn)?1; and the electrolyte contains an additive selected from at least one of a compound, a compound, and a compound capable of complexing manganese ions, and a compound serving as a lithium salt. A total mass percentage of the compound, compound, and compound in the electrolyte is W1%, where W1% is 0.1% to 5%; a molar ratio C1 (mol/L) of the compound in the electrolyte satisfies 0.2?C1?1.5; and r(Mn), C1 and W1% satisfy the following relation: 13?(100W1%+12C1)/r(Mn)?20.

A process produces salt by way of strong brine concentration after sea water desalination by using a two-way circulation method and bromine extraction. The process includes the following steps: A, preparing fresh water and strong brine from sea water in a high-pressure reverse osmosis unit by using a reverse osmosis method, wherein the concentration of the prepared strong brine is 70000 to 80000 PPM; and B, performing fresh and concentrated separation on the strong brine with the concentration of 70000 to 80000 PPM in a two-way circulation manner by using a concentration difference method till the strong brine is crystallized.

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.