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公开(公告)号：KR100860972B1
公开(公告)日：2008-09-30
申请号：KR1020080009618
申请日：2008-01-30
Applicant: 한국지질자원연구원
IPC: H01M10/54
CPC classification number: Y02W30/84 , H01M10/54 , H01M10/0525 , Y02E60/122
Abstract: A safe method for dismantling discarded lithium ion secondary batteries is provided to prevent the risk of firing and explosion causable during a physical treatment step for recycling the discarded lithium ion secondary batteries. A safe method for dismantling discarded lithium ion secondary batteries includes the steps of: applying a physical treatment to external cases of the discarded lithium ion secondary batteries to short-circuit the discarded lithium ion secondary batteries; immersing the short-circuited lithium ion secondary batteries in a discharge solution for 6-12 hours to discharge the lithium ion secondary batteries; and further breaking the discharged lithium ion secondary batteries.
Abstract translation: 提供拆卸废弃锂离子二次电池的安全方法，以防止在用于再循环废弃的锂离子二次电池的物理处理步骤期间产生烧毁和爆炸的危险。 拆卸废弃锂离子二次电池的安全方法包括以下步骤：对丢弃的锂离子二次电池的外部情况进行物理处理以使废弃的锂离子二次电池短路; 将短路的锂离子二次电池浸渍在放电溶液中6-12小时以使锂离子二次电池放电; 并进一步破坏放电的锂离子二次电池。
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公开(公告)号：KR100758877B1
公开(公告)日：2007-09-14
申请号：KR1020060037703
申请日：2006-04-26
Applicant: 한국지질자원연구원
CPC classification number: Y02P10/234 , C22B11/06 , C22B7/008 , C22B11/042
Abstract: A new platinum refining method which has a low energy cost, is not harmful to the human body since chlorine gas is not used, and has low facility and equipment costs due to low corrosion properties when refining scraps containing 75 to 99 wt.% of platinum that are disused after having been used in various industrial fields is provided. A refining method of high purity platinum from platinum scrap comprises the steps of: adding aqua regia into platinum scrap containing 75 to 99 wt.% of platinum in an amount of 200 ml per 10 g of the platinum scrap and heating and decomposing a mixture of the platinum scrap and aqua regia at 80 to 90 deg.C, thereby preparing a hydrogen hexachloroplatinate solution; forming an ammonium hexachloroplatinate precipitate by adding ammonium chloride to platinum ions dissolved into the solution to remove nickel, molybdenum, iron, etc. contained as impurities in the hydrogen hexachloroplatinate solution; filtering the ammonium hexachloroplatinate precipitate, cleaning the filtered ammonium hexachloroplatinate precipitate with ethyl alcohol, and dissolving the cleaned ammonium hexachloroplatinate precipitate into distilled water; and adding a hydrochloric acid solution into the dissolved solution to prepare an electrolyte, maintaining temperature of the electrolyte to 50 to 60 deg.C by using a high density graphite plate as an anode and using a platinum plate as a cathode, and flowing a DC(Direct Current) power source through the electrolyte and performing electrolysis at a current density of 2 to 3 A/dm^2, thereby electrodepositing platinum onto the cathode.
Abstract translation: 由于不使用氯气，因此能量成本低的新的铂精炼方法对人体无害，当精炼含有75〜99重量％的铂的废料时，由于腐蚀性低而具有低设备成本和设备成本 在各种工业领域被使用后被废弃。 来自铂废料的高纯度铂的精炼方法包括以下步骤：将含有75至99重量％铂的铂废料加入到每10克铂废料中200毫升的铂中，并加热并分解 铂废料和王水在80〜90℃，由此制备六氯铂酸氢溶液; 通过向溶解在溶液中的铂离子中加入氯化铵以除去作为六氯铂酸氢盐溶液中杂质的镍，钼，铁等形成六氯铂酸铵的沉淀物; 过滤六氯铂铵铵沉淀，用乙醇清洗过滤的六氯铂酸铵沉淀，并将清洗的六氯铂酸铵沉淀溶解于蒸馏水中; 并向溶解溶液中加入盐酸溶液以制备电解质，通过使用高密度石墨板作为阳极并使用铂板作为阴极，将电解质的温度保持在50〜60℃，并使DC （直流）电源，并以2至3A / dm 2的电流密度进行电解，由此将铂电沉积到阴极上。
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公开(公告)号：KR1020030093582A
公开(公告)日：2003-12-11
申请号：KR1020020031167
申请日：2002-06-03
Applicant: 한국지질자원연구원
CPC classification number: B82Y30/00 , C01G51/42 , C01P2002/72 , C01P2002/74 , C01P2002/82 , C01P2004/04 , C01P2004/64 , C01P2006/40
Abstract: PURPOSE: A method for producing lithium cobalt oxide nano-particles having excellent crystallinity and purity for use as a cathode active material of a lithium battery is provided to reduce the manufacturing cost and improve the work life and charge/discharge speed of the lithium battery. CONSTITUTION: The method for producing lithium cobalt oxide nano-particles by flame spray pyrolysis comprises the steps of: forming an aqueous solution in which a lithium salt and a cobalt salt are dissolved, forming liquid droplets from the solution at the temperature less than 100 deg.C and atomizing the liquid droplets; spraying the atomized liquid droplets into the inside of the flame with the temperature of 800-1700 deg.C and finely diving the liquid droplets by rapid expansion; performing the pyrolysis of the fine liquid droplets at the temperature of 800-1700 deg.C while the oxide nano-particles are formed; and recovering the oxide nano-particles.
Abstract translation: 目的：为了降低制造成本，提高锂电池的工作寿命和充放电速度，提供了用作锂电池用正极活性物质的结晶性和纯度优异的锂钴氧化物纳米粒子的制造方法。 构成：通过火焰喷射热解制备锂钴氧化物纳米颗粒的方法包括以下步骤：形成其中溶解有锂盐和钴盐的水溶液，在低于100℃的温度下从溶液中形成液滴 并雾化液滴; 喷雾雾化的液滴进入火焰内部，温度为800-1700摄氏度，并通过快速膨胀细化液滴; 在形成氧化物纳米颗粒的同时，在800-1700℃的温度下进行微细液滴的热分解; 并回收氧化物纳米颗粒。
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