摘要
通过简单易行的超声浸渍法和高温煅烧法,采用纳米五氧化二钒(V_(2)O_(5))颗粒包覆氟化碳(CF_(x))制备CF_(x)@Nano V_(2)O_(5)复合材料。对比CF_(x)@Nano V_(2)O_(5)复合材料与商用CF_(x)材料的形貌、结构和性能。经纳米V_(2)O_(5)颗粒包覆制备的CF_(x)@Nano V_(2)O_(5)复合材料具有层状表面形貌,振实密度更高。在0.2 C的放电倍率下,CF_(x)@V_(2)O_(5)复合材料的电压平台可达2.81 V;此外,在大电流放电时表现出明显的功率输出优势,在3.0 C倍率下的比容量较商用CF_(x)材料提升了16.68%。
Carbon fluoride(CF_(x))@Nano divanadium pentaoxide(V_(2)O_(5)), composed by CF_(x)coated with nano V_(2)O_(5)particles, was simply prepared via ultrasonic impregnation and high temperature calcination methods.The morphology, structure and performance of CF_(x)@Nano V_(2)O_(5)composite and commercial CF_(x)materials were compared.The CF_(x)@Nano V_(2)O_(5)composite prepared by coating with nano V_(2)O_(5)particles exhibited higher tap density and layered surface morphology.At the discharge rate of 0.2 C,the voltage platform of CF_(x)@Nano V_(2)O_(5)composite could reach 2.81 V.In addition, it showed obvious power output advantage in high current discharge, the specific capacity was 16.68% higher than that of commercial CF_(x)materials at the rate of 3.0 C.
作者
王畅
王庆杰
陈晓涛
石斌
WANG Chang;WANG Qing-jie;CHEN Xiao-tao;SHI Bin(State Key Laboratory of Advanced Chemical Power Sources,Guizhou Meiling Power Sources Co.,Ltd.,Zunyi,Guizhou 563000,China;School of Material Science and Engineering,Chongqing University,Chongqing 400044,China)
出处
《电池》
CAS
北大核心
2022年第2期177-180,共4页
Battery Bimonthly
基金
贵州省科技计划项目(20202Y057)。
