CAJ | 학술논문

以乙酸钡、钛酸四丁酯为原料，采用微波辅助溶胶-凝胶法制备La3+掺杂钛酸钡，通过物相分析、电镜分析、红外分析及电化学分析等手段，研究其晶胞结构与电化学性能的改变. XRD分析表明：La3+掺杂可以增大钛酸钡的晶胞体积、晶格常数a.扫描电镜分析显示：样品直径约50～200纳米的颗粒，为更小的粒子团聚而成，粒径不均匀，有团聚.红外光谱分析表明：制得的样品具有钙钛矿的钛氧八面体结构.电化学分析表明：La3+掺杂的钛酸钡可以增大钛酸钡的储电性能，随着La3+掺杂量的增大，储电量逐渐增加.当La3+掺杂量达到0.002时，储电性能达到最优，随着La3+掺杂量的增大，储电性能逐渐降低，但仍然比纯钛酸钡的储电性能好.
이을산패、태산사정지위원료，채용미파보조용효-응효법제비La3+참잡태산패，통과물상분석、전경분석、홍외분석급전화학분석등수단，연구기정포결구여전화학성능적개변. XRD분석표명：La3+참잡가이증대태산패적정포체적、정격상수a.소묘전경분석현시：양품직경약50～200납미적과립，위경소적입자단취이성，립경불균균，유단취.홍외광보분석표명：제득적양품구유개태광적태양팔면체결구.전화학분석표명：La3+참잡적태산패가이증대태산패적저전성능，수착La3+참잡량적증대，저전량축점증가.당La3+참잡량체도0.002시，저전성능체도최우，수착La3+참잡량적증대，저전성능축점강저，단잉연비순태산패적저전성능호.
The paper is based on acetic acid barium, tetrabutyl titanate as raw materials. It adopts microwave-assisted sol-gel method to synthesize La3+doped barium titanate and studies the changes of the cell structure and electrochemical performance by means of phase analysis, electron microscopy analysis, infrared and electrochemical analysis. The result of XRD analysis shows that La3+doped barium titanate crystal cell volume may be expanded, and the lattice constant, a. The result of scanning electron microscopy (sem) analysis shows that the samples are particles about 50-200 nm in diameter, and they are reunited into smaller particles, the size of which is not uniform and has a reunion. Infrared spectrum analysis shows the prepared sample is a titanium oxide with perovskite octahedral structure. Electrochemical analysis shows that La3+doped barium titanate can increase the storage performance of barium titanate and it helps electricity storage to achieve optimal performance with the increase of La3+ reserve of electricitydoped amount and gradual increasing amount of when La3+doping amount amounts to 0.002. Later With the increase of La3+doped amount the charge storage properties reduce gradually, but still better than pure storage performance of barium titanate.