73results about How to "Easy to move out" patented technology

The present invention relates to the technical field of battery materials, particularly to a titanium nitride coated lithium titanate material preparation method, which sequentially comprises: preparing a precursor solution, evaporating a solvent, sintering in an atmosphere containing oxygen, and sintering in an atmosphere containing reduction gas nitrogen. According to the present invention, the titanium nitride coated lithium titanate material prepared by using the preparation method has characteristics of high titanium nitride coating uniformity, good coating effect and good conductivity, and the conductivity problem of application of titanium nitride in electrode materials is solved; and titanium nitride is adopted to separate tetravalent titanium ions and an electrolyte, such that catalysis cracking of the electrolyte by the tetravalent titanium ions can be effectively prevented so as to prevent phenomenon of gas generation. In addition, the preparation process is simple and controllable, and process parameters of the lithium titanate material coated through titanium nitride can be controlled so as to control the coating degree of titanium nitride.

The invention discloses a carbon nano tube / graphene composite negative pole material, a preparation method thereof and a lithium battery. The preparation method of the carbon nano tube / graphene composite negative pole material comprises the steps of placing graphene powder and a catalyst for carbon source splitting decomposition in a microwave reaction cavity, vacuumizing the microwave reaction cavity and leading protective gas into the microwave reaction cavity and using a microwave vapor deposition method to prepare the carbon nano tube / graphene composite negative pole material on a graphene base body growing carbon nano tube. A negative pole of the lithium battery contains the carbon nano tube / graphene composite negative pole material. The preparation method of the carbon nano tube / graphene composite negative pole material adopts the microwave vapor deposition method to perform in-situ preparation of the carbon nano tube / graphene composite negative pole material, does not needs a pre-synthesis process, reduces the production cost, adopts microwave heating and is efficient, low in energy consumption and short in production period. Due to the fact that the lithium battery contains the carbon nano tube / graphene composite negative pole material, embedding and taking-out of lithium are facilitated, the inreversible capacity of first-time charging and discharging is reduced, and the lithium battery is good in safety and high in power.

A transport arrangement (100) for a building (200) comprises: a first and a second elongate transport rail (10, 11) arranged parallel with each other and comprising a respective first and second pivotal rail segment (20, 21) and a respective first and second fixed rail segment (30, 31); and a container (50) comprising a first and a second pair of rolls (60, 61; 70, 71) for guiding the container (50) along the first and second transport rail (10,11). The transport arrangement is characterized in that the first and second pair of rolls (60, 61; 70, 71) are configured such that the first and thesecond pivotal rail segment (20, 21), when extending between a respective first and a second pair of rolls (60, 61; 70, 71), is pivotable between a first position (A) in which the first and the secondpivotal rail segment (20, 21) is aligned with the first and second fixed rail (10, 11) segment and a second position (B) in which the first and the second pivotal rail segment (20, 21) is orthogonalto the first and second fixed rail segment (30, 31).

The invention discloses a preparation method for a nanoscale lithium titanate material with high specific capacity. The preparation method comprises the following steps: (1) preparing a liquid A; (2) preparing a liquid B; (3) under a condition of magnetic stirring, slowly adding the liquid B into the liquid A, so as to obtain a mixed dispersion liquid; (4) putting the mixed dispersion liquid into a high-temperature reaction still, then placing the high-temperature reaction still in a drying oven for reaction, after the reaction, naturally cooling to room temperature, leaching, washing with deionized water and absolute ethyl alcohol, and then drying under a condition that the temperature is 60-120 DEG C so as to obtain a precursor; (5) sintering the precursor for 1-5 hours in anitrogen atmosphere under a condition that the temperature is between 400-1000 DEG C, so as to obtain the nanoscale lithium titanate material; (6) immersing the nanoscale lithium titanate material in an acid solution with the hydrogen ion concentration of 0.01-14mol / L under a condition that the temperature is 20-200 DEG C, then leaching, washing with deionized water and absolute ethyl alcohol, and then drying, so as to obtain the nanoscale lithium titanate material with high specific capacity.