The latest cathode materials make the rechargeable

2022-08-24
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The new negative electrode material makes the rechargeable battery have a high capacity and long life

the guide wheel between the working platform of the Japanese pressure testing machine and the 1 side column will also produce friction. The Institute for qualitative materials research (NIMS) recently announced that one of their research teams has successfully synthesized a material with alternating overlapping manganese oxide nanosheets and graphene. As the negative electrode material of public service electric batteries, such as lithium and sodium ion charging and discharging materials, performance testing, quality evaluation, simulation verification, data analysis, characterization evaluation, testing and certification, the composite material can increase the charging and discharging capacity of the battery by more than twice, prolong the repeated service life, and solve the problem of not having both capacity and life

high capacity quantification is one of the goals of secondary batteries. At present, its cathode uses carbon materials, which is to recycle excess plastic bags from citizens carrying bags after buying vegetables. Theoretically, transition metal oxides have high capacity and are expected to become a substitute for carbon materials. In particular, manganese oxide with layered structure can be stripped into single molecule thick nanosheets, which can be used as negative electrodes, and the surface is all active, which can greatly improve the capacity. However, the difficulty of manganese oxide is that repeated charging and discharging is easy to destroy the structure, and nano sheets are also easy to agglomerate

the research team dispersed manganese oxide nanoparticles in solution and mixed them with graphene to synthesize interactive multilayer laminated composites. Manganese oxide and graphene are both negatively charged and usually mutually exclusive. As early as 2015, the research team chemically modified graphene to make it positively charged, solved the problem of exclusion, and achieved the highest capacity and longest life of metal oxide cathode materials at that time

this time, by combining the two substances at the molecular level, we have obtained high characteristics that are difficult to achieve by a single material. In addition to rechargeable batteries, composite materials can also greatly improve the efficiency of energy storage and conversion systems such as supercapacitors and electrode catalysts

13. Overload protection: automatic shutdown when the load exceeds 10% of the rated value

the research results were published in the online edition of ACS Nano, a journal of the American Chemical Association

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