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Spongy acetylenic carbon material prepared by ball milling CaC_2 and chlorinated rubber—Its mercury adsorption and electrochemical property

Xuebing Xu  Wenfeng Li  Luyan Xia  Yingzhou Lu  Hong Meng  Chunxi Li  
【摘要】:Design and preparation of novel advanced carbon materials with unique architecture and functional groups is of great significance.Herein,a spongy acetylenic carbon material(SACM) was prepared through mechanochemical reaction of CaC_2 and chlorinated rubber in a planetary ball mill at ambient temperature.Its composition and structure were characterized,and its electrochemical properties and adsorption performance for Hg~(2+)were studied.The SACM is composed of submicron spongy aggregates with high carbon content(81.8%) and specific area(503.9 m~2·g~(-1)),rich porosity and acetylenic groups.The SACM exhibits excellent adsorption for Hg~(2+)with saturated adsorption amount being 157.1 mg·g~(-1),which is superior to conventional carbon materials.Further,it exhibits good electrochemical performance with low equivalent series resistance(0.50 Ω),excellent cycling stability and ideal double layer capacitive behavior.This paper provides a novel and universal synthesis method of spongy carbon materials,and better results can be expected through tuning the pore structure,graphitization degree,and heteroatoms of the target carbon materials.

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