CAJ | 학술논문

采用溶胶-凝胶-水热法，以钛酸丁酯为原料，分别用十六烷基三甲基溴化铵（ CATB ）、十二烷基苯磺酸钠（LAS）、六次甲基四胺（HTM）3种表面活性剂，制取特殊形貌的TiO2．扫描电子显微镜和粉末X-射线衍射仪测试结果表明，所合成产品具有花簇状的微纳米结构，都为金红石型TiO2．表面活性剂不影响TiO2的晶型，但影响TiO2的形貌、尺寸及分散度．阳离子表面活性剂CTAB有利于提高TiO2的分散度，改善团聚程度；HTM利于TiO2自组装成由纳米棒构成的球形颗粒．以CTAB为表面活性剂制备的TiO2作为锂离子电池负极活性材料，充放电和阻抗测试结果表明，在167.5 mA/g电流密度下放电比容量达128 mAh/g，循环50次后，放电比容量仍保持为110 mAh/g，显示了该电极材料的潜在价值．
채용용효-응효-수열법，이태산정지위원료，분별용십륙완기삼갑기추화안（ CATB ）、십이완기분광산납（LAS）、륙차갑기사알（HTM）3충표면활성제，제취특수형모적TiO2．소묘전자현미경화분말X-사선연사의측시결과표명，소합성산품구유화족상적미납미결구，도위금홍석형TiO2．표면활성제불영향TiO2적정형，단영향TiO2적형모、척촌급분산도．양리자표면활성제CTAB유리우제고TiO2적분산도，개선단취정도；HTM리우TiO2자조장성유납미봉구성적구형과립．이CTAB위표면활성제제비적TiO2작위리리자전지부겁활성재료，충방전화조항측시결과표명，재167.5 mA/g전류밀도하방전비용량체128 mAh/g，순배50차후，방전비용량잉보지위110 mAh/g，현시료해전겁재료적잠재개치．
Using TBOT, concentrated hydrochloric acid and deionized water as raw material with CATB , LAS, hexamethylenetetramine (HTM) as surfactants, the TiO2 samples were synthesized by sol-gel-hydrothermal method. Scanning electron microscope ( SEM) and X-ray powder diffraction ( XRD) results show that the synthesized prod-ucts are rutile TiO2 with a micro-nano structure with flower clusters.The crystal type of TiO2 has no obvious change with the addition of different surfactants , but the morphology and the size of the TiO 2 particles have changed to some extent.Among of the three surfactants , CTAB is favor of the dispersity of the TiO 2 particles, and HTM is helpful to form spherical morphology by TiO 2 nano rods .Charging/discharging test and EIS results of the TiO 2 prepared by CATB as the surfactant shows that the first specific discharge capacity is 128 mAh/g, after 50 cycles, the discharge capacity remains 110 mAh/g at a high constant current density of 167.5 mA/g.