Waste cotton fabric derived porous carbon containing Fe3O4/NiS nanoparticles for electrocatalytic oxygen evolution
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第24期
论文作者：Shan Jiang Hao Shao Genyang Cao Han Li Weilin Xu Jingliang Li Jian Fang Xungai Wang
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 m2/g and a uniform distribution of Fe3O4/Ni S nanoparticles （Fe3O4/Ni S@CC）.The composite exhibits excellent OER performance with an onset potential of 1.44 V and a low overpotential of 310 m V at the current density of 10 m A/cm2in a 1.0 M KOH solution,which even surpass commercial Ru O2catalyst.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.
Shan Jiang1，Hao Shao1，Genyang Cao2，Han Li1，Weilin Xu2，Jingliang Li1，Jian Fang1,3，Xungai Wang1
1. Deakin University, Institute for Frontier Materials2. State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University3. College for Textile and Clothing Engineering, Soochow University
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 m2/g and a uniform distribution of Fe3O4/Ni S nanoparticles （Fe3O4/Ni S@CC）.The composite exhibits excellent OER performance with an onset potential of 1.44 V and a low overpotential of 310 m V at the current density of 10 m A/cm2in a 1.0 M KOH solution,which even surpass commercial Ru O2catalyst.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.
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