CAJ | 학술논문

以价廉易得的玉米秸秆为原料，采用 ZnCl2化学活化法，通过微波加热制备活性炭材料，继而采用熔融法与单质硫复合制备硫/碳复合材料．利用比表面积和孔隙率分析仪，XRD，FESEM对材料的结构及形貌进行分析，并用充放电及循环伏安测试研究了材料的电化学性能．结果表明，所制得的活性炭比表面积达1042．2 m2/g，总孔容为0．76 cm3/g，活性炭内部分布不同规格孔隙，表面有大量微孔．与单质硫经热处理后，硫成功地填充在活性炭的孔道及孔隙里，形成的硫/碳复合材料在电流密度为400 mA /g，1．5～3 V 范围充放电，首次比容量为608．4 mAh /g，100次循环后容量保持率为60％，表现出较好的电化学性能．
이개렴역득적옥미갈간위원료，채용 ZnCl2화학활화법，통과미파가열제비활성탄재료，계이채용용융법여단질류복합제비류/탄복합재료．이용비표면적화공극솔분석의，XRD，FESEM대재료적결구급형모진행분석，병용충방전급순배복안측시연구료재료적전화학성능．결과표명，소제득적활성탄비표면적체1042．2 m2/g，총공용위0．76 cm3/g，활성탄내부분포불동규격공극，표면유대량미공．여단질류경열처리후，류성공지전충재활성탄적공도급공극리，형성적류/탄복합재료재전류밀도위400 mA /g，1．5～3 V 범위충방전，수차비용량위608．4 mAh /g，100차순배후용량보지솔위60％，표현출교호적전화학성능．
Activated carbon was synthesized by using cheap corn stalk as carbon source and ZnCl2 as acti-vator by microwave assisted.Then sulfur-carbon composite materials was synthesized with elemental sulfur by using melting method.The composite was analyzed by surface area and porosity analyzer XRD,FESEM for structure and morphology,and cyclic voltammetry (CV)and charge-discharge curve for electrochemical properties.Results showed that the activated carbon had specific surface area of 1 042.2 m2 /g and the total entrance of 0.76 cm3 /g.There were pores of different specifications distributed in internal acticated carbon and a large number of pores on activated carbon surface.The sulfur-carbon composite materials were tested when current density at 400 mA /g and scope of charge-discharge in 1.5 ~3 V,its initial specific discharge capacity was 608.4 mAh /g,and capacity retention was 60% after 100 times,showing good electrochemical performance.