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Lithium metal has good specific capacity and low reduction potential, and is one of the most favourable battery cathode materials. However, some problems still exist. For example, lithium may react with the electrolyte to cause short circuits, its ionic conductivity may not meet people's expectations, and its dendrite and unstable electrolyte interface will have security problems, so it can not be widely used. In order to make better use of the characteristics of the battery and avoid the shortages of the battery, this article will introduce four methods to improve the quality of the battery according to four different articles. The main ideas of the four articles are proposing a special upright structure using in the coiled Li anode, demonstrating a sol−gel based synthesis procedure that makes the templating agent by using a block copolymer and a homo-polymer as the extra carbon source, producing solid-state polymer electrolytes that keep conformal interfacial intercourse with the whole cell constituents and keeping an eye on the air-stable LixSiSy protection layer that using a solution-based method to form in situ on the face of the lithium. By proposing various new methods, we can find out the relationship between them and make good use of their advantages to help explore more whole batteries. Therefore, this paper will provide novel and useful solutions to battery problems, so that people can learn more about lithium metal batteries.
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