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Cobalt‐free ultrahigh‐nickel layered oxide cathodes hold great promise for reducing the cost and enhancing the energy density of Li‐ion batteries. However, the increasing Ni content and the elimination of Co could cause severe interfacial and structural degradation, leading to poor electrochemical performance of ultrahigh‐nickel layered oxide cathodes. Here, a Co‐free oxide, LiNi0.96Al0.03Ca0.01O2...
Lithium–sulfur (Li–S) battery is one of the most promising next‐generation rechargeable batteries. Lots of fundamental research has been done for the problems during cycling like capacity fading and columbic efficiency reducing owing to severe diffusion and migration of polysulfide intermediates. In the early stage, a wide variety of carbon materials are used as host materials for sulfur to enhance...
A cooling system of a high-power Continuous Wave Magnetron (CWM) is devised with theoretical and numerical simulations. The temperature and heat distribution of the cavity is obtained utilizing ANSYS, and that is consistent with the situation under practical operation.
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