Development of new high-energy anode material for large-scale secondary battery using metallic nano-particle

便携式电子设备的爆炸性需求在紧凑、轻便和可靠的电力来源的重要性中产生了一个增量。对于这样的要求，最可能的放电之一是锂充电电池。一种是一种缓慢的过渡金属氧化物，即阴极和其他图形阳极。However，它是众所周知的，因为每个单位的重量或体积可以确定电池的能量密度。该图形阳极材料通常用于锂可充电电池，每个单位的小容量重量约为350 mAh/g和/或每个单位的体积达到其低密度。为了克服这些障碍，有可能的使用量已经由几个工人制造，以便在图形anodes的地方找到替代的阳极材料。在本报告中， crystalline MnV y D22 y D2 O y D26 y D2 and MnMoO y D24 y D2被聚合物凝胶和固体状态反应方法和对其物理和电化学属性进行了研究，作为锂二次电池的一种阳极材料。表征的物理性质是由热分析（TG/DTA）、FT-IR和SEM携带的。Structural analysis by powder XRD， and spectroscopic analysis by XANES shows that the synthesized compound is MnVイイD22イイD2OイD26イD2 with brannerite structure。The Li insertion of MnVイイD22イエD2OイイD26イエD2 anode during the first charge showed a large capacity of about 1400 mAh/g，acccompanied by irreversible structural transformation into amorphous material。在第一次阅读期间，它的结构转变将产生类似的结构转变，并显示了大约800毫安/克的容量。本报告介绍了该材料对现有阳极材料的优势，并讨论了根据电子过程的机制。

The explosive demand for portable electronic devices has brought about an increase in the importance of compact, lightweight and reliable power sources. One of the most probable candidates for such requirements is lithium rechargeable battery. One is a lithiated transition metal oxide as cathode and the other graphite anode. However, it is well known that the quantity of active material per unit weight or volume determines the energy density of the battery. The graphite anode material commonly used in lithium rechargeable batteries suffers from small capacity per unit weight about 350mAh/g and/or per unit volume due to its low density. To overcome these disadvantages, considerable amounts of attempts have been made by several workers to find out alternative anode materials in place of graphite anodes. In this report, crystalline MnVィイD22ィエD2OィイD26ィエD2 and MnMoOィイD24ィエD2 was synthesized by a polymer gellation and solidstate reaction method and investigated for its physical and electrochemical properties as an anode material for lithium secondary battery. The physical properties of characterization was carried out by thermal analysis (TG/DTA), FT-IR, and SEM. Structural analysis by powder XRD, and spectroscopic analysis by XANES shows that the synthesized compound is MnVィイD22ィエD2OィイD26ィエD2 with brannerite structure. The Li insertion of MnVィイD22ィエD2OィイD26ィエD2 anode during the first charge showed a large capacity of about 1400 mAh/g, accompanied by irreversible structural transformation into amorphous material. Despite its structural transformation to amorphous during the first lithiation, subsequent cycles showed a capacity of about 800mAh/g. This report presents the advantage of this material over existing anode material and discusses the mechanism underlying the electrode process.