介孔TiN粉体的合成及其电化学性能  

Preparation of Mesoporous TiN Powders and Its Electrochemical Performance

作　　者：呼世磊 魏恒勇 倪洁 卜景龙 刘盼 吕东风 崔燚 

机构地区：[1]华北理工大学材料与科学学院,河北唐山063000 [2]河北省无机非金属材料重点实验室,河北唐山063009

出　　处：《广州化工》2017年第20期46-49,共4页GuangZhou Chemical Industry

基　　金：国家自然科学基金(51272066);河北省自然科学基金(批准号:E2013209183);华北理工大学青年科学研究基金(批准号Z201413)资助

摘　　要：选用廉价低毒乙醇为氧供体,TiCl_4为钛源,以P123为造孔剂,采用非水解溶胶-凝胶法制备介孔TiO_2粉体,再经800℃氨气还原氮化合成出介孔TiN粉体。通过XRD、SEM和BET表征粉体物相与结构发现,合成粉体为立方TiN,晶粒尺寸约19 nm,存在平均孔径为24 nm的介孔结构,其比表面积为41 m^2/g。采用循环伏安和恒流充放电测试样品电化学性能表明,在电流密度为20 mA/g时,其比电容为130 F/g,经1000次充放电循环后比容量仍保持89%,表现出良好循环稳定性。The mesoporous TiO2 powder was prepared by non-hydrolytic sol-gel method using ethanol as the oxygen donor,titanium tetrachloride as the titanium source and P123 as the pore-forming agent,respectively.The mesoporous TiN powder was synthesized via nitrogen reduction of the mesoporous TiO2 powder at 800 ℃ in NH3.The phase and morphology were characterized by XRD,SEM and TEM.The results indicated that the synthesized powders were cubic TiN powders and their grain size was about 19 nm.Meanwhile,the synthesized TiN powder had a mesoporous structure with the average pore size of 24 nm and the specific surface area of TiN powder was 41 m^2/g.the electrochemical properties of TiN powder was characterized by cyclic voltammetry and galvanostatic charge/discharge measurements.The specific capacitance of TiN powder was 130 F/g at a current density of 20 m A/g.The capacity remained 89% after the charge and discharge cycle of 1000 times,indicating mesoporous TiN powder had good cycle stability.

关 键 词：TiN粉体 介孔 还原氮化 电化学 

分 类 号：TB34[一般工业技术—材料科学与工程] O614.411[理学—无机化学]