Application of diatomite as an effective polysulfides adsorbent for lithium-sulfur batteries
作者： Zhong Li , Nan Zhang , Yubao Sun , Hanzhong Ke , Hansong Cheng
DOI: 10.1016/J.JECHEM.2017.09.020
关键词: Cathode 、 Battery (electricity) 、 Adsorption 、 Carbon black 、 Inorganic chemistry 、 Sulfur 、 High energy 、 Lithium sulfur 、 Diffusion 、 Materials science
摘要: Abstract The lithium–sulfur batteries show the great potential to be most promising candidate for high energy applications. However, shuttling of soluble polysulfides deteriorates battery performance tremendously. To suppress diffusion polysulfides, diatomite that has abundant natural three-dimensional ordered pores is incorporated into cathode trap polysulfides. composite material (S-DM-AB short), including sulfur (S), (DM), and acetylene black (AB) prepared by an impregnation method. For comparison, another (S-AB short) also same with S-DM-AB delivers a discharge capacity 531.4 mAh/g after 300 cycles at 2 C retention 51.6% room temperature. By contrast, S-AB delivered only 196.9 mAh/g much lower 18.6% under condition. addition in proved cheap effective way improve life time lithium batteries.
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