Waste cotton fabric derived porous carbon containing Fe_(3)O_(4)/NiS nanoparticles for electrocatalytic oxygen evolution  

作　　者：Shan Jiang Hao Shao Genyang Cao Han Li Weilin Xu Jingliang Li Jian Fang Xungai Wang 

机构地区：[1]Deakin University,Institute for Frontier Materials,Geelong,VIC,3216,Australia [2]State Key Laboratory of New Textile Materials and Advanced Processing Technologies,Wuhan Textile University,Wuhan,430200,China [3]College for Textile and Clothing Engineering,Soochow University,Suzhou,Jiangsu,215123,China

出　　处：《Journal of Materials Science & Technology》2020年第24期92-99,共8页材料科学技术（英文版）

基　　金：support from Australian Research Council(ARC)through ARC Centre of Excellence for Electromaterials Science(CE140100012);ARC Research Hub for Future Fibres(IH140100018)。

摘　　要：Developing low-cost,active and durable electrocatalysts for oxygen evolution reaction(OER)is an urgent task for the applications such as water splitting and rechargeable metal-air battery.Herein,this work reports the fabrication of a metal and hetero atom co-doped fibrous carbon structure derived from cotton textile wastes and its use as an efficient OER catalyst.The free-standing fibrous carbon structure,fabricated with a simple two-step carbonization process,has a high specific surface area of 1796 m^2/g and a uniform distribution of Fe_(3)O_(4)/NiS nanoparticles(Fe_(3)O_(4)/NiS@CC).The composite exhibits excellent OER performance with an onset potential of 1.44 V and a low overpotential of 310 mV at the current density of 10 mA/cm^2in a 1.0 M KOH solution,which even surpass commercial Ru O_(2)catalyst.Additionally,this ternary catalyst shows remarkable long-term stability without current density loss after continuous operation for 26 h.It can be believed that the outstanding OER performance is attributed to the synergistic effect between the iron oxides and nickel sulphides,as well as the micro-meso porous carbon structure.This study demonstrates a new strategy to use conventional textile materials to prepare highly efficient electrocatalysts;it also provides a simple approach to turn textile waste into valuable products.

关 键 词：Waste cotton Porous carbon OER electrocatalyst Iron oxides Nickel sulphides 

分 类 号：TQ116.2[化学工程—无机化工] TQ426