日本研究小组研究开发出“超离子”固态锂电池？A lithium superionic conductorBatteries are a key technology in modern society. They are used to power electric and hybrid electric vehicles and to store wind and solar energy in smart grids. Electrochemical devices with high energy and power densities can currently be powered only by batteries with organic liquid electrolytes. However, such batteries require relatively stringent safety precautions, making large-scale systems very complicated and expensive. The application of solid electrolytes is currently limited because they attain practically useful conductivities (10?2?S?cm?1) only at 50–80?°C, which is one order of magnitude lower than those of organic liquid electrolytes. Here, we report a lithium superionic conductor, Li10GeP2S12 that has a new three-dimensional framework structure. It exhibits an extremely high lithium ionic conductivity of 12?mS?cm?1 at room temperature. This represents the highest conductivity achieved in a solid electrolyte, exceeding even those of liquid organic electrolytes. This new solid-state battery electrolyte has many advantages in terms of device fabrication (facile shaping, patterning and integration), stability (non-volatile), safety (non-explosive) and excellent electrochemical properties (high conductivity and wide potential window).好，好神奇，为什么国外科研所关注的是未来是创新，为什么我国科研所关注的是眼前呢？09:18 ]查看更多6个回答 . 20人已关注
投稿中的电化学问题，求助？投了一篇关于电沉积 氧化物 薄膜的，尝试做了点电催化处理 亚甲基蓝 溶液，本来只是打算当成个应用，表明合成的材料有用，可是审稿人的意见基本都集中在电催化方面，我不是学电化学的，求大家帮帮忙，看看这些问题是什么意思1 The current intensity curve for bare electrode and modified electrodes in the absence and presence of MB (the domain of electro activity of MB). 2 The same remark hold for the chrono-amperometry. Since the potential is fixed, the authors should verify if there is no parasite reaction. This trend can easily be checked by measuring the potential with respect to reference electrode.??3 The gives the onset potential of the hydrogen evolution to know whether the quantity of electricity is used for the film formation with faradic yield of 100% otherwise the H2 bubbles make the film spongy and badly adhered.4 In the discussion part: the authors should explain why the current rises with the applied potential (does the large current improve the reactions kinetics?).第一个问题是不是要做I-v曲线或者是循环伏安曲线？the domain of electro activity of MB是啥意思？第二个问题是做I-t曲线？我是恒电压沉积和恒电压降解，这个应该是指降解亚甲基蓝的I-t曲线吧？“This trend can easily be checked by measuring the potential with respect to reference electrode”又是啥意思啊？第三个问题要我测的是氢气产生的 onset potentia吗？这个怎么测啊？测完了又该怎么解释啊？第四个问题，难道不都是沉积电压增大了，沉积电流都变大吗？论文给个大修，还真是头痛。尼玛早知道换个性质测测好了。查看更多4个回答 . 20人已关注
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