| 引用本文: | 于沺沺,吴凤楠,杜瓌,夏营港,薛裕华,李生娟.ZIF衍生钴镍笼状双金属硫化物高效双功能电催化剂[J].材料科学与工艺,2024,32(3):29-37.DOI:10.11951/j.issn.1005-0299.20220413. |
| YU Tiantian,WU Fengnan,DU Gui,XIA Yinggang,XUE Yuhua,LI Shengjuan.ZIF-derived cobalt-nickel loaded cage-like bimetallic sulfide high-efficiency bifunctional electrocatalyst[J].Materials Science and Technology,2024,32(3):29-37.DOI:10.11951/j.issn.1005-0299.20220413. |
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| 摘要: |
| 锌-空气电池的阴极氧还原反应(ORR)动力迟缓,急需开发活性高、成本低的阴极催化剂。本文采用两次热解法合成了沸石咪唑酯骨架结构(ZIF)衍生的多孔碳负载Co、Ni双金属硫化物笼状纳米颗粒材料,通过SEM、XRD、Raman、N2吸附比表面分析、电化学分析等对负载Co、Ni笼状双金属硫化物的多孔碳进行形貌、结构表征以及性能测试。结果表明,金属硫化物导电性能优异,且热解后的多孔碳结构会暴露更多活性位点,具有优异的电催化活性,ORR性能测试中,其半波电位可达0.89 V,优于商用Pt/C催化剂的0.85 V。OER性能在电流密度为10 mA/cm2时电位为1.79 V,与商用IrO2(电位可达1.68 V)相当。本文制备的笼状双金属硫化物具有优异的性能,可作为锌-空气电池的优异双功能电催化剂。 |
| 关键词: 多孔碳 ZIF 硫化物 氧还原反应 氧析出反应 电催化剂 |
| DOI：10.11951/j.issn.1005-0299.20220413 |
| 分类号:O643.36 |
| 文献标识码:A |
| 基金项目:上海市科学技术委员会地方高校能力建设项目(20060502200). |
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| ZIF-derived cobalt-nickel loaded cage-like bimetallic sulfide high-efficiency bifunctional electrocatalyst |
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YU Tiantian,WU Fengnan,DU Gui,XIA Yinggang,XUE Yuhua,LI Shengjuan
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( School of Materials and Chemistry, University of Shanghai for Science and Technology,Shanghai 200093, China)
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| Abstract: |
| Cathodic oxygen reduction reaction (ORR) of the zinc-air batteries is slow, urgently needed to develop cathode catalysts with high activity and low cost. Porous carbon with Co-Ni loaded cage-like bimetal sulfide nanoparticles derived from the Zeolitic imidazolate framework (ZIF) were synthesized by two-step pyrolysis methods. By SEM, XRD, Raman, N2 adsorption apparatus and electrochemical analysis, the morphology, structure and properties of porous carbon supported by Co and Ni cage bimetallic sulfide were characterized. The results show that the as-prepared bimetallic sulfide exposes more active sites and exhibits remarkable electrocatalytic activity. In the ORR performance test, the half-wave potential reached 0.89 V, better than the 0.85 V of commercial Pt/C catalysts. The OER performance shows a potential of 1.79 V at a current density of 10 mA/cm2, comparable to the commercial IrO2 (potential of up to 1.68 V). The caged bimetallic sulfide presents excellent properties which can be used as excellent dual function electrocatalysts for zinc-air cells. |
| Key words: porous carbon ZIF sulfide oxygen reduction reaction oxygen evolution reaction electrocatalyst |
