Abstract:
본발명은이온교환법을이용한단사정계결정구조의나트륨바나듐인산염계전극재료및 그제조방법에관한것으로, 보다구체적으로는합성이어려운단사정계나트륨바나듐인산염계전극재료를이온교환법을이용하여리튬과나트륨을교환함으로써고용량의전극물질을제조할수 있는제조방법및 그방법으로제조된단사정계결정구조의나트륨바나듐인산염계전극재료에관한것이다. 본발명에의하면이온교환법을이용하여리튬과나트륨을교환함으로써합성이어려운단사정계나트륨바나듐인산염계전극재료를제조할수 있다. 또한, 본발명의제조방법에의하면고용량의고전압화된전극재료를간단한공정을통해제조할수 있으며, 그방법으로제조된단사정계나트륨바나듐인산염계전극재료는나트륨이차전지에적용할수 있는효과가있다.
Abstract:
PURPOSE: A method for evaluating skin irritation is provided to express skin sensitivity and irritation and to replace a conventional skin stimulation test. CONSTITUTION: A method for evaluating/predicting skin irritation comprises: a step of treating a test material to organ-derived nerve cells; a step of measuring cell membrane ion potential of the nerve cells; and a step of confirming stimulation. The nerve cells are afferent sensory nerve cells or neuron. A kit for evaluating the skin irritation comprises the nerve cells and micro current measuring device.