MnWO_(4)/生物质衍生碳纳米复合催化剂的制备及催化性能  

Synthesis and Electrocatalytic Properties of MnWO_(4)/Biomass-Derived Carbon Nanocomposite Catalyst

作　　者：刘卓磊 李静文 孙梦龙 张永伟 党长伟 云斯宁 LIU Zhuo-Lei;LI Jing-Wen;SUN Meng-Long;ZHANG Yong-Wei;DANG Chang-Wei;YUN Si-Ning(Functional Materials Laboratory(FML),School of Materials Science and Engineering,Xi′an University of Architecture and Technology,Xi′an 710055,China)

机构地区：[1]西安建筑科技大学材料科学与工程学院,功能材料研究所,西安710055

出　　处：《无机化学学报》2021年第12期2219-2226,共8页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.51672208);陕西省重点研发计划-国际合作重点项目(No.2019KWZ-03)资助。

摘　　要：通过共沉淀法合成了双金属氧化物MnWO_(4)镶嵌生物质衍生碳(MnWO_(4)/BC)纳米复合催化剂,并将其作为对电极(counter electrode,CE)催化剂组装了染料敏化太阳能电池(dye-sensitized solar cell,DSSC),探究了MnWO_(4)/BC在非碘体系中的催化性能和光伏性能。结果表明:在铜氧化还原(Cu^(2+)/Cu^(+))电对DSSC中获得的光电能量转换效率(power conversion efficiency,PCE)为3.57%(D35)和1.59%(Y123),高于Pt电极的PCE(3.12%,1.16%);50次连续循环伏安测试表明,MnWO_(4)/BC催化剂具有较好的电化学稳定性。A bimetal oxide embedded biomass-derived carbon(MnWO_(4)/BC)nanocomposite catalyst was synthesized using a co-precipitation approach,and it was used as a counter electrode(CE)catalyst to assemble a dye-sensitized solar cell(DSSC).The catalytic performance and photovoltaic performance of MnWO_(4)/BC in non-iodine system was explored.To boost the photovoltaic performance of DSSC,a novel copper redox couple(Cu^(2+)/Cu^(+))and dye(D35,Y123)were adopted for replacing the traditional I-/I3-redox couple and N719 dye,respectively.The resulting novel DSSC with MnWO_(4)/BC nanocomposite CE catalyst had a photovoltage of approximately 0.89 V.Moreover,it exhibit-ed power conversion efficiency(PCE)of 3.57%and 1.59%for D35 and Y123 dyes,respectively,which were 14.4%and 27.0%,respectively,higher than that in the case of Pt.Fifty continuous cyclic voltammetry tests show that MnWO_(4)/BC catalyst has good electrochemical stability.It is observed that the catalytic activity of MnWO_(4)/BC enhanced significantly due to the superior conductivity and the special pore structure of BC,the excellent electrocat-alytic ability of MnWO_(4),and the synergistic effect between MnWO_(4) and BC.

关 键 词：染料敏化太阳能电池 双金属氧化物 生物质衍生碳 铜氧化还原电对 对电极催化剂 

分 类 号：O614.711[理学—无机化学] O614.613[理学—化学]