公开(公告)号：KR100433626B1

公开(公告)日：2004-06-02

申请号：KR1020010074563

申请日：2001-11-28

Applicant: 한국전자통신연구원

Inventor： 장순호 ,  김광만 ,  김태안 ,  오승모

IPC: C01G31/02

CPC classification number: Y02P20/544

Abstract: PURPOSE: Provided is a synthetic method of amorphous vanadium oxide(V2O5) used as an active material of lithium secondary battery by reacting NH4VO3 (precursor) solution with acids. Accordingly, the resultant vanadium oxide has electrochemical stability and excellent cathode characteristics. CONSTITUTION: The amorphous vanadium oxide is synthesized by the following steps of: dissolving 0.05-0.5M of NH4VO3 precursor into water at 50-200deg.C for an aqueous NH4VO3 solution; adding an acid having 5-70% of purity, selected from HNO3, HCl, H2SO4, H3PO4, etc. to the NH4VO3 solution until pH of the NH4VO3 solution arrives at pH0-4; doping the acidified NH4VO3 solution with metal(Ag or Cu) powder to be vanadium oxide doped with 0.01-0.5M of metal; precipitating amorphous vanadium oxide and filtering; and optionally adding water and stirring to get vanadium oxide gel with large surge surface area and large quantities of pores; drying at 80-120deg.C in an oven, or by using solvent exchange or supercritical fluid.

Abstract translation: 目的：提供一种通过使NH4VO3（前体）溶液与酸反应而用作锂二次电池活性材料的无定形氧化钒（V2O5）的合成方法。 因此，得到的氧化钒具有电化学稳定性和优异的阴极特性。 构成：无定形钒氧化物通过以下步骤合成：将0.05-0.5M的NH4VO3前体在50-200℃的水中溶解于NH4VO3水溶液; 向NH 4 VO 3溶液中加入选自HNO 3，HCl，H 2 SO 4，H 3 PO 4等的具有5-70％纯度的酸，直至NH 4 VO 3溶液的pH达到pH0-4; 用金属（Ag或Cu）粉末掺杂酸化的NH 4 VO 3溶液为掺杂有0.01-0.5M金属的氧化钒; 沉淀无定形氧化钒并过滤; 并任选加入水并搅拌得到具有大涌浪表面积和大量孔隙的氧化钒凝胶; 在烘箱中在80-120℃干燥，或使用溶剂交换或超临界流体。

公开(公告)号：KR1020030043403A

公开(公告)日：2003-06-02

申请号：KR1020010074563

申请日：2001-11-28

Applicant: 한국전자통신연구원

Inventor： 장순호 ,  김광만 ,  김태안 ,  오승모

IPC: C01G31/02

CPC classification number: Y02P20/544

Abstract: PURPOSE: Provided is a synthetic method of amorphous vanadium oxide(V2O5) used as an active material of lithium secondary battery by reacting NH4VO3 (precursor) solution with acids. Accordingly, the resultant vanadium oxide has electrochemical stability and excellent cathode characteristics. CONSTITUTION: The amorphous vanadium oxide is synthesized by the following steps of: dissolving 0.05-0.5M of NH4VO3 precursor into water at 50-200deg.C for an aqueous NH4VO3 solution; adding an acid having 5-70% of purity, selected from HNO3, HCl, H2SO4, H3PO4, etc. to the NH4VO3 solution until pH of the NH4VO3 solution arrives at pH0-4; doping the acidified NH4VO3 solution with metal(Ag or Cu) powder to be vanadium oxide doped with 0.01-0.5M of metal; precipitating amorphous vanadium oxide and filtering; and optionally adding water and stirring to get vanadium oxide gel with large surge surface area and large quantities of pores; drying at 80-120deg.C in an oven, or by using solvent exchange or supercritical fluid.

Abstract translation: 目的：提供通过使NH4VO3（前体）溶液与酸反应而用作锂二次电池的活性物质的无定形氧化钒（V2O5）的合成方法。 因此，所得钒氧化物具有电化学稳定性和优异的阴极特性。 构成：通过以下步骤合成无定形氧化钒：将0.05-0.5M的NH4VO3前体溶解在水中，在50-200℃下用于NH 4 VO 3溶液; 向NH4VO3溶液中加入选自HNO 3，HCl，H 2 SO 4，H 3 PO 4等纯度为5-70％的酸，直到NH4VO3溶液的pH达到pH4-4; 用金属（Ag或Cu）粉末掺杂酸化的NH4VO3溶液为掺杂有0.01-0.5M金属的氧化钒; 沉淀无定形氧化钒和过滤; 并加入水和搅拌，得到氧化钒凝胶，表面积大，孔数大; 在烘箱中干燥80-120℃，或使用溶剂交换或超临界流体。