摘要:
A refractory which is prepared by forming a refractory material composition comprising a refractory material comprising graphite particles having an average particle diameter of 500 nm or less or a refractory material comprising graphite particles obtained by graphitizing carbon black and a refractory aggregate; or a refractory which is prepared by forming a refractory material composition comprising a carbonaceous particles (A) having a DBP absorption (x) of 80 ml/100 g or more selected from carbon black and graphite particles obtained by graphitizing carbon black, a carbonaceous particles (B) having a DBP absorption (x) of less than 80 ml/100 g selected from carbon black and graphite particles obtained by graphitizing carbon black, and a refractory aggregate. The refractory provides a carbon-containing refractory, in particular, the one having a reduced content of carbon, which is excellent in the resistance to corrosion, oxidation and thermal shock.
摘要:
The present invention provides electrolyte that can suppress reduction of battery efficiencies and capacities with increased cycles of charge/discharge of the battery, a method for producing the same, and a redox flow battery using the same electrolyte. The redox flow battery uses the electrolyte having a NH 4 content of not more than 20ppm and a relation of Si concentration (ppm) × electrolyte quantity (m 3 )/electrode area (m 2 ) of less than 5ppm · m 3 /m 2 . By limiting a quantity of contaminants in the electrolyte, a clogging of carbon electrodes to cause reduction of the battery performances with increased charge/discharge operations can be suppressed.
摘要翻译:抑制电池效率降低和电池重复充电/放电循环的能力的电解液的NH 4含量为20ppm以下,Si浓度(ppm)×电解质量(ppm) M 3>)/电极面积(m 2>)小于5ppm m 3> / m 2>。
摘要:
Disclosed herein are new vanadium oxide hydrate compositions highly suitable for use as electrode-active materials in primary and secondary lithium and lithium ion batteries, and a process for their preparation.
摘要:
Disclosed is a new vanadium oxide hydrate composition suitable for use as electrode-active material in primary and secondary lithium and lithium ion batteries and a process for its preparation.
摘要:
A single phase silver vanadium oxide prepared from a mixture of a decomposable silver salt and vanadium oxide first heated at about 2°C to about 40°C above the decomposition temperature of the mixture followed by a second heating in a temperature range of about 490°C to about 520°C is described. The silver vanadium oxide material is coupled with a lithium anode and activated with a nonaqueous electrolyte to provide an improved high energy density electrochemical cell having increased pulse voltages and a reduction in voltage delay.
摘要:
The current invention relates to the preparation of an improved cathode active material for non-aqueous lithium electrochemical cell. In particular, the cathode active material comprises ε-phase silver vanadium oxide prepared by using a γ-phase silver vanadium oxide starting material. The reaction of γ-phase SVO with a silver salt produces the novel ε-phase SVO possessing a lower surface area than ε-phase SVO produced from vanadium oxide (V 2 O 5 ) and a similar silver salt as starting materials. Consequently, the low surface area ε-phase SVO material provides an advantage in greater long term stability in pulse dischargeable cells.
摘要:
A single phase silver vanadium oxide prepared from a mixture of a decomposable silver salt and vanadium oxide first heated at about 2°C to about 40°C above the decomposition temperature of the mixture followed by a second heating in a temperature range of about 490°C to about 520°C is described. The silver vanadium oxide material is coupled with a lithium anode and activated with a nonaqueous electrolyte to provide an improved high energy density electrochemical cell having increased pulse voltages and a reduction in voltage delay.