An Approach ro Active Material Design for Rechargeable Nonaqueous Cell

可充电非水电池活性材料设计方法

基本信息

批准号：
01470084
负责人：
HIRAI Taketsugu
金额：
$ 4.35万
依托单位：
Osaka City University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1989
资助国家：
日本
起止时间：
1989 至 1990
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-01470084/
关键词：
Lithium Cells Manganese Dioxide Rechargeable Nonaqueous Cell Nickel Dioxide Cobalt Dioxide Mixed Metal Oxides

项目摘要

Research directed toward the better understanding on the depolarizability of manganese dioxide in lithium nonaqueous cell was carried out in the fiscal years 1989-1990. The specific works done at the Osaka City University including the active material design for rechargeable nonaqueous cells therewith are ;(1) NiAsーType Manganese Dioxide-manganese and lithium ions are located at octahedral sites in a hexagonally close-packed oxygen array. During the reduction of this material tetravalent manganese ions are reduced to trivalent manganese ions in the same lattice sites and the lithium ions are inserted into the octahedral sites without the destruction of core structure (topotactic reduction). For oxidation of the reduced sample the movements of electrons and litium ions are reverse direction. Rechargeable capacity was observed to be 120 - 160 mAh g^<-1> in the voltage range of 2.5 - 3.8 V inlithium nonaqueous cell.(2) Rock Salt-Type Manganese Dioxide ー manganese and lithium ions are loca … More ted at octahedral sites in a cubic-close packed oxygen array. The reaction proceeds in a topotactic manner. The working voltage is ca. 4 V due to the low-spin trivalent manganese ions. Rechargeable capacity was observed to be 100 - 120 mAh g^<-1>. This material may be used as cathode active material for the 4-volts class of rechargeable nonaqueous cells.(3) Rock Salt-Type Mixed Metal Dioxide- A series of mixed metal dioxides having a cubicーclose packed oxygen array was examined by an analogy with the crystal structure of a rock salt-type manganese dioxide. The materials we have succeeded were LiNi<@D2x@>D2 Co<@D21-x@>D2 O<@D22@>D2 (O<x<1) in which metal and lithium ions were located at octahedral sites in a cubic-close packed oxygen array. Trivalent metal ions, Ni<@D13+@>D1 and Co<@3+@>D1 ions, in a cubic-close packed oxygen array. Trivalent metal ions, Ni<@D13+@>D1 and Co<@D13+@>D1 ions, in these material were low-spin state. These materials showed 4 V of the working voltage and 130 - 160 mAh g<@D1-1@>D1 of rechargeable capacity.Materials proposed in this work are applicable to the 4-volts class of rechargeable nonaqueouse cells. We believe that these materials prompt the development of new generation in rechargeable nonaqueous cells. Less

在1989 - 1990财年进行了针对锂非水细胞中锰二氧化碳的更好理解的研究。在大阪市大学所做的特定作品，其中包括可充电非液态细胞的活性材料设计；（1）nias型型锰二氧化碳 - 甲虫和锂离子位于六角形的八面体位置，位于六角形的氧气阵列中。在减少该材料的四锰离子在同一晶格位置的三价锰离子，并将锂离子插入到八面体位点中，而不会破坏核心结构（替代性减少）。为了氧化电子和真离子的样品运动的减少是相反的方向。在电压范围为2.5-3.8 V非含水岩含量的电压范围为120-160 mAh g^<-1>。反应以拓扑方式进行。工作电压是大约。 4 V由于低自旋三价锰离子。可充电能力被观察到100-120 mAh g^<-1>。该材料可以用作四伏的可充电非纯净细胞的阴极活性材料。（3）岩石盐型混合金属二氧化金属 - 一系列具有立方粘液堆积氧阵列的混合金属二氧化物，通过与岩盐盐型含岩型含量的晶体结构的类比检查。我们成功的材料是lini <@d2x@> d2 co <@d21-x@> d2 o <@d22@> d2@> d2（o <x <1），其中金属和锂离子位于八面的cublose close close capic-close codyge氧气阵列中。三价金属离子，ni <@d13+@> d1和co <@3+@> d1离子，在一个立方体close的氧气阵列中。三价金属离子，ni <@d13+@> d1和co <@d13+@> d1离子在这些材料中是低旋转状态。这些材料显示了工作电压的4 V和130-160 mAh g <@d1-1@> D1@> d1的可充电能力。这项工作中提出的材料适用于4伏类的可充电非熟食店细胞。我们认为，这些材料促使新一代在可充电非水上细胞中的发展。较少的