摘要：【中文】本发明属于锂离子电池领域，公开了一种复相高压正极材料，由六方层状结构LiNi_x‑aCo_y‑aMn_z‑aM_bO₂、岩盐相(Li+N)O和包覆剂A三部分构成，其化学通式为LiNi_x‑aCo_y‑aMn_z‑aM_bO₂·a(Li+N)O·cA；其中，0＜a＜0.01，0.33≤x＜1.0，0≤y≤0.33，0.01＜z＜0.5，0＜b＜0.02，0.001＜c＜0.01，x+y+z＝1；M为Mg、Al、Ti、Zr、Sr、Y、Ce、B、W、La、Sn、Zn和Mo中的一种或几种；N为Ni、Co和Mn中的一种或几种；包覆剂A为TiO₂、ZrO₂、Al₂O₃、SnO₂、Li₃PO₄、Li₂B₄O₇、Li₄TiO₄和Li₂SiO₃中的一种。本发明通过控制高温固相反应过程，使之形成六方层状和岩盐相组成的复相结构正极材料，精确调控两相比例，在不牺牲材料电化学活性的前提下提升了材料的结构稳定性。 【EN】The invention belongs to the field of lithium ion batteries, and discloses a complex phase high-voltage positive electrode material which is composed of LiNi with a hexagonal layered structure_x‑aCo_y‑aMn_z‑aM_bO₂Rock salt phase (Li + N) O and coating agent A, and its chemical general formula is LiNi_x‑aCo_y‑aMn_z‑aM_bO₂A (Li + N) O.cA; wherein a is more than 0 and less than 0.01, x is more than or equal to 0.33 and less than 1.0, y is more than or equal to 0 and less than or equal to 0.33, z is more than 0.01 and less than 0.5, and b is more than 0 and less than 0.02C is more than 0.001 and less than 0.01, and x + y + z is 1; m is one or more of Mg, Al, Ti, Zr, Sr, Y, Ce, B, W, La, Sn, Zn and Mo; n is one or more of Ni, Co and Mn; the coating agent A is TiO₂、ZrO₂、Al₂O₃、SnO₂、Li₃PO₄、Li₂B₄O₇、Li₄TiO₄And Li₂SiO₃One kind of (1). According to the invention, the high-temperature solid-phase reaction process is controlled to form the complex-phase structure anode material consisting of the hexagonal layer and the rock salt phase, the proportion of the two phases is accurately regulated, and the structural stability of the material is improved on the premise of not sacrificing the electrochemical activity of the material.

摘要：【中文】本发明公开了一种复合包覆Ni65型镍钴锰三元正极材料及其制备方法与应用。所述方法为：(1)将Ni65型镍钴锰三元正极材料、磷酸铝分子筛和磷酸盐快离子导体按照100：0.05～2：0.05～3的质量比混合均匀，得到复合材料；(2)将复合材料在300～900℃下煅烧4～12h。该方法利用AlPO₄能够有效抑制正极材料在循环过程中的过渡金属Co/Mn的溶出，从而提高正极材料的结构稳定性；磷酸铝分子筛内部的孔结构能为Li⁺的扩散、迁移提供特殊的通道，加速Li⁺的脱嵌过程，从而改善材料的电化学性能。快离子导体则能够增大材料的体相电导率和晶界电导率，从而改善正极材料的倍率性能。 【EN】The invention discloses a composite Ni 65-coated nickel-cobalt-manganese ternary cathode material and a preparation method and application thereof. The method comprises the following steps: (1) mixing Ni65 type Ni-Co-Mn ternary positive electrode material, an aluminum phosphate molecular sieve and a phosphate fast ion conductor according to the proportion of 100: 0.05-2: uniformly mixing the components in a mass ratio of 0.05-3 to obtain a composite material; (2) calcining the composite material at 300-900 ℃ for 4-12 h. The method utilizes AlPO₄The dissolving-out of transition metal Co/Mn in the circulation process of the anode material can be effectively inhibited, so that the structural stability of the anode material is improved; the pore structure inside the aluminum phosphate molecular sieve can be Li⁺Provide special channels for diffusion and migration, and accelerate Li⁺De-intercalation process ofThereby improving the electrochemical performance of the material. The fast ion conductor can increase the bulk conductivity and the grain boundary conductivity of the material, thereby improving the rate capability of the cathode material.

摘要：【中文】本发明涉及一种废旧锂离子电池前段除氟的回收方法以及一种废旧锂离子电池回收前段的除氟处理方法，所述除氟处理方法包括以下步骤：将含氟电池粉料与溶氟助剂溶液混合，加热，搅拌，过滤，得到除氟后电池粉和含氟洗液；将沉锂剂加入含氟洗液，加热，搅拌，过滤，得到含锂渣和除锂后液；将除氟剂加入除锂后液，搅拌，过滤，得到含氟渣和除氟后液；将除氟后液配制成溶氟助剂溶液，重复上述步骤。采用本发明的方法可将废旧锂离子电池在进入回收工序前，将氟含量降低至0.11％以下，除氟率高达90％，有利于解决电池回收工艺中因氟造成的一系列问题；本发明洗液循环利用率高，大幅度减少了水的用量，节省了成本，具有极大的应用前景。 【EN】The invention relates to a method for recycling front-section defluorination of waste lithium ion batteries and a defluorination treatment method for the front-section recycling of the waste lithium ion batteries, wherein the defluorination treatment method comprises the following steps: mixing fluorine-containing battery powder with a fluorine-dissolving auxiliary agent solution, heating, stirring and filtering to obtain defluorinated battery powder and fluorine-containing washing liquor; adding a lithium precipitation agent into fluorine-containing washing liquid, heating, stirring and filtering to obtain lithium-containing slag and a liquid after lithium removal; adding a fluorine removing agent into the liquid after lithium removal, stirring and filtering to obtain fluorine-containing slag and the liquid after fluorine removal; and (4) preparing the defluorinated solution into a fluorine dissolving auxiliary agent solution, and repeating the steps. By adopting the method, the fluorine content of the waste lithium ion battery can be reduced to be below 0.11 percent before entering the recovery process, and the fluorine removal rate is up to 90 percent, thereby being beneficial to solving a series of problems caused by fluorine in the battery recovery process; the washing liquid has high cyclic utilization rate, greatly reduces the using amount of water, saves the cost and has great application prospect.

摘要：【中文】本发明属于锂离子电池领域，公开了一种层状‑尖晶石相复合正极材料，所述层状‑尖晶石相复合正极材料是由层状结构的LiNi_xCo_yMn_zO₂与尖晶石相LiM₂O₄构成的复合材料aLiM₂O₄·(1‑a)LiNi_xCo_yMn_zO₂；其中0.5≤x≤0.8，0.02≤y≤0.2，0.02≤z≤0.4，0<a≤0.5，M为Ni、Co和Mn中的一种或几种。本发明采用一次烧结形成缺锂型正极材料，并通过特殊的降温工艺促进部分层状结构转化成尖晶石相，在此基础上二次烧结补锂得到层状‑尖晶石相复合正极材料，改善正极材料的倍率性能的同时能进一步提升材料的热稳定性。 【EN】The invention belongs to the field of lithium ion batteries, and discloses a layered-spinel phase composite positive electrode material which is LiNi with a layered structure_xCo_yMn_zO₂With spinel phase LiM₂O₄Constituting composite material aLiM₂O₄·(1‑a)LiNi_xCo_yMn_zO₂(ii) a Wherein x is more than or equal to 0.5 and less than or equal to 0.8, y is more than or equal to 0.02 and less than or equal to 0.2, z is more than or equal to 0.02 and less than or equal to 0.4, and x is more than or equal to 0.5 and less than or equal to 0.8<a is less than or equal to 0.5, and M is one or more of Ni, Co and Mn. The invention adopts one-time sintering to form the lithium-deficient anodeThe material promotes partial lamellar structure to be converted into spinel phase through a special cooling process, and on the basis, the layered-spinel phase composite anode material is obtained by secondary sintering and lithium supplement, so that the rate capability of the anode material is improved, and the thermal stability of the material is further improved.

摘要：【中文】本发明属于锂离子电池领域，公开了一种降低三元正极材料电阻率的方法，包括以下步骤：(1)将三元正极材料与氢氧化物混合，得到混合物；(2)将混合物进行烧结，冷却，过筛，即得。本发明通过采用氢氧化物包覆高电阻率的三元正极材料，能够有效地降低三元正极材料的电阻率。由于较高的电阻率会影响三元正极材料在电池中的DCR及循环性能，因此通过降低三元正极材料的粉末电阻率可避免材料电阻率偏高导致电池内阻增大及循环性能下降。 【EN】The invention belongs to the field of lithium ion batteries, and discloses a method for reducing the resistivity of a ternary cathode material, which comprises the following steps: (1) mixing a ternary positive electrode material with hydroxide to obtain a mixture; (2) sintering the mixture, cooling and sieving to obtain the product. According to the invention, the hydroxide is adopted to coat the high-resistivity ternary cathode material, so that the resistivity of the ternary cathode material can be effectively reduced. Because the DCR and the cycle performance of the ternary cathode material in the battery can be influenced by higher resistivity, the increase of the internal resistance of the battery and the reduction of the cycle performance caused by higher resistivity of the material can be avoided by reducing the powder resistivity of the ternary cathode material.

摘要：【中文】本发明公开了一种掺杂ⅢA元素的锂离子筛及其制备方法和用途，该方法包括以下步骤：将锰源与锂源混合，研磨均匀；加入ⅢA元素的盐或单质，研磨均匀，然后干燥；干燥后的原料干磨成粉末，在氧气或空气氛围中、300～800℃分段焙烧0.5～16h，冷却后得到离子筛前驱体；离子筛前驱体酸洗4～12h，过滤、干燥后得到离子筛；所述ⅢA元素的盐或单质是Na₂B₄O₇·10H₂O、硼粉、硫酸铝、氢氧化铝、氯化镓、硝酸镓、氢氧化铟或三氟乙酸铊中的一种以上。用本发明制备的离子筛产品4h吸附量接近20mg/g，酸洗锰损失相比λ‑MnO₂作为离子筛减少1倍，优于LiMn₂O₄作为前驱体制备离子筛的吸附性能。 【EN】The invention discloses a IIIA element-doped lithium ion sieve and a preparation method and application thereof, wherein the method comprises the following steps: mixing a manganese source and a lithium source, and uniformly grinding; adding IIIA element salt or simple substance, grinding uniformly, and drying; the dried raw materials are dry-ground into powder, the powder is roasted for 0.5 to 16 hours in an oxygen or air atmosphere at a temperature of 300 to 800 ℃ in a segmented mode, and an ion sieve precursor is obtained after cooling; pickling the precursor of the ion sieve for 4-12 h, filtering and drying to obtain the ion sieve; the IIIA element salt or simple substance is Na₂B₄O₇·10H₂O, boron powder, aluminum sulfate, aluminum hydroxide, gallium chloride, gallium nitrate, indium hydroxide or thallium trifluoroacetate. The 4-hour adsorption capacity of the ionic sieve product prepared by the method is close to 20mg/g, and the loss of acid-washing manganese is compared with that of lambda-MnO₂AsThe ion sieve is reduced by 1 time and is superior to LiMn₂O₄The precursor is used for preparing the adsorption performance of the ionic sieve.

摘要：【中文】本发明属于锂离子电池领域，公开了一种正极材料添加剂的制备方法，包括以下步骤：(1)将磷酸铁锂材料与铁源混合，破碎，筛分，得到混合粉料；(2)将混合粉料置于还原性气体中，加热进行还原处理，得到磷铁合金和锂的化合物；(3)将磷铁合金和锂的化合物进行球磨，再进行筛分，得到正极材料添加剂。本发明将制备的磷铁合金和锂化合物作为正极材料添加剂添加到锂离子电池正极材料中，可明显改善锂电池的倍率性能及循环性能，达到优化电池性能的目的。 【EN】The invention belongs to the field of lithium ion batteries, and discloses a preparation method of a positive electrode material additive, which comprises the following steps: (1) mixing a lithium iron phosphate material with an iron source, crushing and screening to obtain mixed powder; (2) placing the mixed powder in reducing gas, heating and reducing to obtain a ferrophosphorus alloy and lithium compound; (3) and ball-milling the ferrophosphorus alloy and the lithium compound, and then screening to obtain the anode material additive. The prepared ferrophosphorus alloy and lithium compound are used as the positive electrode material additive to be added into the positive electrode material of the lithium ion battery, so that the rate capability and the cycle performance of the lithium battery can be obviously improved, and the aim of optimizing the battery performance is fulfilled.

摘要：【中文】本发明属于锂离子电池正极材料领域，公开了一种磷酸锂包覆高镍三元正极材料的制备方法，包括以下步骤：(1)采用高温烧结法制得高镍三元正极材料；(2)将磷酸盐溶于水中，得到包覆液；(3)将高镍三元正极材料和水混合，再加入锂源搅拌，得到悬浊液；(4)将包覆液滴入悬浊液中反应，抽滤，得到湿料；(5)将湿料干燥，过筛，烧结并保温，即得。本发明使用水作为溶剂进行包覆，在工业上有可操作性和可靠性；本发明在水溶液中溶解后再沉淀，属于化学包覆的过程，包覆均匀，包覆剂没有自团聚或者偏聚。 【EN】The invention belongs to the field of lithium ion battery anode materials, and discloses a preparation method of a lithium phosphate coated high-nickel ternary anode material, which comprises the following steps: (1) preparing a high-nickel ternary cathode material by adopting a high-temperature sintering method; (2) dissolving phosphate in water to obtain a coating solution; (3) mixing the high-nickel ternary positive electrode material with water, adding a lithium source, and stirring to obtain a suspension; (4) dripping the coating liquid into the suspension for reaction, and performing suction filtration to obtain a wet material; (5) drying the wet material, sieving, sintering and keeping the temperature to obtain the material. The invention uses water as solvent to coat, and has operability and reliability in industry; the invention is dissolved in water solution and then reprecipitated, belongs to the process of chemical coating, and has uniform coating and no self-agglomeration or segregation of the coating agent.

摘要：【中文】本发明涉及正极材料领域，公开了一种正极材料烧结装置，从上至下依次设有：第一回转窑，第一回转窑包括不锈钢窑体、设置在不锈钢窑体外的加热器夹套、设置在不锈钢窑体内的螺杆，不锈钢窑体内设有窑体内衬；第二回转窑，第二回转窑的进口与第一回转窑的出口通过管道连接，第二回转窑设有一次烧结段和一次冷却段；混合器，混合器顶部的进口、出口分别装有计量料仓、螺杆料仓，计量料仓与第二回转窑的出口连接，混合器内腔中装有陶瓷内衬；第三回转窑，第三回转窑的进口与螺杆料仓连接，第三回转窑分为二次烧结段和二次冷却段。本发明的正极材料烧结装置解决了现有烧结工艺占地面积广、能耗高、产能低、成本高的问题。 【EN】The invention relates to the field of anode materials, and discloses an anode material sintering device, which is sequentially provided with: the first rotary kiln comprises a stainless steel kiln body, a heater jacket arranged outside the stainless steel kiln body and a screw rod arranged in the stainless steel kiln body, and a kiln body lining is arranged in the stainless steel kiln body; the inlet of the second rotary kiln is connected with the outlet of the first rotary kiln through a pipeline, and the second rotary kiln is provided with a primary sintering section and a primary cooling section; the inlet and the outlet at the top of the mixer are respectively provided with a metering bin and a screw bin, the metering bin is connected with the outlet of the second rotary kiln, and a ceramic lining is arranged in the inner cavity of the mixer; and the inlet of the third rotary kiln is connected with the screw stock bin, and the third rotary kiln is divided into a secondary sintering section and a secondary cooling section. The anode material sintering device solves the problems of wide occupied area, high energy consumption, low productivity and high cost of the conventional sintering process.