An universal in-situ phosphating strategy to fabricate high-performance Co_(2)P-based bifunctional oxygen electrocatalyst derived from conjugated polyaniline-phytic acid copolymer  

作　　者：Wen-Xue Chen Yue Du Li-Na Zhou Zhi-Yi Zhong Zhi-Xian Shi Yan Mao Zi-Quan Zhou Hao-Yue Feng Yu Su Hai-Yan Hu Shi Li Dong-Bin Xiong Jian-Qin Zhou Yi-Si Liu Yao Xiao 

机构地区：[1]Hubei Key Laboratory of Photoelectric Materials and Devices,School of Material Science and Engineering,Hubei Normal University,Huangshi 435002,China [2]College of Chemistry and Materials Engineering,Wenzhou University,Wenzhou325035,China [3]Hangzhou Hangyang Chemical and Medical Engineering Lo.,Hangzhou310000,China [4]Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education),Nankai University,Tianjin 300071,China [5]Innovative Centre for Flexible Devices(iFLEX),Max Planck-NTU Joint Lab for Artificial Senses,School of Materials Science and Engineering,Nanyang Technological University,Singapore 639798,Singapore [6]不详

出　　处：《Rare Metals》2024年第11期5823-5834,共12页稀有金属（英文版）

基　　金：financially supported by Hubei Provincial Natural Science Foundation and Huangshi of China(No.2022CFD039);the National Natural Science Foundation of China(Nos.22075072,52202284 and 52301272);the College Students Innovation and Entrepreneurship Training Program of China(Nos.D202305271035223001,D202305271407085899 and D202305272109110950);Zhejiang Provincial Natural Science Foundation(No.LQ23E020002);Wenzhou Key Scientific and Technological Innovation Research Projects(No.ZG2023053);Wenzhou Natural Science Foundation(Nos.ZG2022032,G20220019 and G20220021);the Cooperation between Industry and Education Project of Ministry of Education(No.220601318235513);the State Key Laboratory of Electrical Insulation and Power Equipment,Xi'an Jiaotong University(No.EIPE22208);the Doctoral Innovation Foundation of Wenzhou University(No.3162023001001)。

摘　　要：Electrocatalysts play a crucial role in the performance of rechargeable Zn-air batteries(ZABs),but it is still difficult to produce nonprecious materials with excellent bifunctional oxygen reduction reactions(ORR)and oxygen evolution reactions(OER).Herein,conjugated polyaniline-phytic acid polymer(pANI-PA)was directly calcined to fabricate Co_(2)P nanoparticles embedded in N,P-doped carbon network composites(Co_(2)P@pDC-PA)for metal-air cathodes.The resulting pANI-PA derived Co_(2)Pbased carbon composite exhibits exceptional bifunctional ORR/OER activities with a half-wave potential of 0.79 V for ORR and 1.62 V of over-potential for OER at 10mA·cm^(-2).Owing to the synergistic effect of its unique three-dimensional(3D)structure,N,P-doped carbon framework,and encapsulated Co_(2)P nanoparticles,as-fabricated composite can be used as a highly efficient air cathode in the rechargeable metal-air battery.The assembled rechargeable ZAB demonstrates a high-power density of 190.0 mW·cm^(-2)and remarkable cycling stability over1000 h.This study introduced a novel approach that paves the way for the efficient,cost-effective,and scalable production of bifunctional electrocatalysts for rechargeable ZABs.

关 键 词：Co_(2)P nanoparticles Polyaniline-phytic acid polymers(pANI-PA) Bifunctional electrocatalysts Rechargeable Zn-air batteries(ZABs) 

分 类 号：TM911.41[电气工程—电力电子与电力传动] TQ426[化学工程]