Vol.28 No.8 周志飚等：复合型雷达吸波材料 ·769。 A composite radar absorbing material ZHOU Zhibiao,GUO Zhimeng,MAO Weimin2),PAN Cheng?,FANG Kun2) 1)Institute of Pow der Metalugy.Uriversity of Science and Technology Beijng,Beijing 100083.China 2)School of Material Science and Engineering.Uriversity of Science and Technology Beijng.Beijng 100083.China ABSTRACT A new type of broadband radar absorbing material(RAM)w as synthesized with carbonyl iron and conduction poly aniline(PAn).By SEM and TEM analyses the microstructure of the product was carbony l iron coated by conduction polyaniline,and the single absorbent layer of 0.9mm with the composite absorbent attenuated about 5dB microw ave in the range from 6 to 18GHz.The bandwidth could be broad- ened and the effect of absorbing could be improved by further study.It should be applied as a useful RAM for its lightw eight,co rrosion resistant and broad-band. KEY WORDS radar absorbing material;composite;broad-band 1,3-dioxolane pretreatment to improve the interfacial characteristics of a lithium anode DING Fei,LIU Yuwen2),HU Xinguo 1)Department of Applied Chemistry.Harhin Institute of Technology.Hatbin 150001.China 2)Research Centre.JJJ Battery Co.Ltd..Jiangmen 529000.China ABSTRACT 1,3-dioxolane(DOL)was originally used to pretreat a lithium metal electrode to improve its interfacial characteristics.Electrochemical impedance spectra(EIS)measurements revealed that,after the DOL pretreatment,the lithium electrode had better interfacial stability during im mersion in electrolyte and as repeated charge/discharge cycles.It was proved by SEM that the pretreated one has smoother morpholo- gy and less dendrite after repeated charge/discharge cycles.Consequentially,benefiting from the better in- terface characteristics of the lithium electrode,the rechargeable lithium cell w ith a DOL-pretreated lithium anode had the obviously enhanced discharging performance and better cyclability. KEY WORDS lithium battery;interfacial stability;1,3-dioxolane;pretreatment;EIS 【摘自Rare Metals,2006,25(4):297A composite radar absorbing material ZHOU Zhibiao 1) , GUO Zhimeng 1) , MAO Weimin 2) , PAN Cheng 2) , FANG Kun 2) 1) Institu te of Pow der Metallu rgy, Uni versit y of Science and Technology Beijing, Beijing 100083, China 2) S chool of Material S cience and Engineering, Universit y of Science and Technology Beijing, Beijing 100083, China ABSTRACT A new type of broadband radar absorbing material ( RAM ) w as synthesized with carbo nyl iron and conduction poly aniline ( PAn) .By SEM and TEM analyses the microstructure of the product w as carbony l iro n coated by conduction polyaniline, and the single absorbent layer of 0.9mm w ith the composite absorbent attenuated about 5dB microw ave in the range from 6 to 18GHz .The bandwidth could be broad￾ened and the effect of absorbing could be improved by further study .It should be applied as a useful RAM for its lightw eight, co rrosion resistant and broad-band . KEY WORDS radar absorbing material;composite ;broad-band 1, 3-dioxolane pretreatment to improve the interfacial characteristics of a lithium anode DING Fei 1) , LIU Yuwen 2) , HU Xinguo 1) 1) Department of Applied C hemistry, Harbin Institut e of Technology, Harbin 150001, China 2) Research Centre, JJJ Batt ery Co .Ltd., Jiangmen 529000, China ABSTRACT 1, 3-dioxolane ( DOL) was originally used to pretreat a lithium metal electrode to improve its interfacial characteristics .Electrochemical impedance spectra ( EIS) measurements revealed that, after the DOL pretreatment, the lithium electrode had better interfacial stability during immersion in electroly te and as repeated charge/discharge cycles .It w as proved by SEM that the pretreated one has smoother morpholo￾gy and less dendrite after repeated charge/discharge cycles .Consequentially , benefiting from the better in￾terface characteristics of the lithium electrode, the rechargeable lithium cell w ith a DOL-pretreated lithium anode had the obviously enhanced discharging performance and better cy clability . KEY WORDS lithium battery ;interfacial stability ;1, 3-dioxolane ;pretreatment ;EIS [ 摘自 Rare Metals, 2006, 25( 4) :297] Vol.28 No.8 周志飚等:复合型雷达吸波材料 · 769 ·