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A robust bifunctional catalyst for rechargeable zn-air batteries:Ultrathin NiFe-LDH nanowalls vertically anchored on soybeanderived Fe-N-C matrix

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Nano Research 2021年第4期14卷 1175-1186页

作者： Meng Zhang Jiting Zhang Siyi Ran Lingxi Qiu Wei Sun Ying Yu Jisheng Chen Zhihong Zhu Institute of Nano-science and Nano-technology College of Physical Science and TechnologyCentral China Normal UniversityWuhan 430079China Key Laboratory of Laser Technology and Optoelectronic Functional Materials of Hainan Province College of Chemistry and Chemical EngineeringHainan Normal UniversityHaikou 571158China

ABSTRACT NiFe layered double hydroxide(NiFe-LDH)nanosheets and metal-nitrogen-carbon materials(M-N-C,M=Ni,Fe,Co,etc.)are supreme catalysts in the oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)process,***,the monotonic performance and insufficient stability severely hamper their practical application in rechargeable ***,we simultaneously combine ultrathin NiFe-LDH nanowalls with renewable soybean-derived Fe-N-C matrix to obtain a hybrid materials(NiFe-LDH/FeSoy-CNSs-A),which exhibits robust catalytic activities for OER(E_(j=10)=1.53 V ***)and ORR(E_(1/2)=0.91 V ***),with a top-notch battery parameters and stability in assembled rechargeable zn-air *** investigations indicate that the vertically dispersed NiFe-LDH nanosheets,Fe-N-C matrix derived from soybean and the strong synergy between them are responsible for the unprecedented OER and ORR *** key role of intrinsic N defects involved in the hybrid materials is firstly specified by ultrasoundassisted extraction of soy protein from *** exquisite design can facilitate the utilization of sustainable biomass-derived catalysts,and the mechanism investigations of N defects and oxygenic groups on the structure-activity relationship can stimulate the progress of other functional hybrid electrocatalysts.

关键词： biomass Fe-N-C NiFe-LDH oxygen reduction reaction oxygen evolution reaction rechargeable zn-air batteries

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Efficient oxygen electrocatalysts with highly-exposed Co-N4 active sites on N-doped graphene-like hierarchically porous carbon nanosheets enhancing the performance of rechargeable zn-air batteries

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Nano Research 2022年第8期15卷 7209-7219页

作者： Nengfei Yu Hui Chen Jingbiao Kuang Kailin Bao Wei Yan Jilei Ye Zhongtang Yang Qinghong Huang Yuping Wu Shigang Sun School of Energy Sciences and Engineering Nanjing Tech UniversityNanjing 211816China State Key Laboratory of Physical Chemistry of Solid Surfaces Department of ChemistryCollege of Chemistry and Chemical EngineeringCollaborative innovation center of Chemistry for Energy MaterialsXiamen UniversityXiamen 361005China

Designing bifunctional oxygen electrocatalysts with high activity,lasting stability,and low-cost for rechargeable zinc-air batteries(RZABs)is a tough ***,an advanced electrocatalyst is prepared by anchoring atomically dispersed Co atoms on Ndoped graphene-like hierarchically porous carbon nanosheets(SA-Co-N4-GCs)and thereby forming Co-N4-C *** unique structure with excellent conductivity,large surface area,and three dimensional(3D)interconnected hierarchically porous architecture exposes not only more Co-N4 active sites to accelerate the kinetics of both oxygen reduction reaction(ORR)and oxygen evolution reaction(OER),but also provides an efficient charge/mass transport environment to reduce diffusion ***,SA-Co-N4-GCs exhibits excellent ORR/OER bifunctional activities and durability,surpassing noble-metal *** RZABs using SA-Co-N4-GCs cathodes display a high open-circuit voltage of 1.51 V,a remarkable power density of 149.3 mW·cm−2,as well as excellent stability and rechargeability with faint increase in polarization even at a large depth of charge–discharge cycle with 16 h per cycle over an entire 600 h long-term ***,flexible quasi-solid-state RZABs with SA-Co-N4-GCs cathodes also deliver a considerable power density of 124.5 mW·cm−2,which is even higher than that of liquid batteries using noble-metal *** work has thrown new insight into development of high-performance and low-cost electrocatalysts for energy conversion and storage.

关键词： bifunctional electrocatalysts Co-N4 active sites oxygen reduction reaction oxygen evolution reaction rechargeable zn-air batteries

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Hierarchical mesoporous S,N-codoped carbon nanostructures composed of Co/Co-Cu-S/carbon nanoplate arrays on carbon nanofibers as a self-supported air cathode for long-lasting rechargeable zn-air batteries

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Science China(Technological Sciences) 2022年第3期65卷 693-703页

作者： XU ZhuYing YAN Lei SHEN JunLing YANG XiaoJing NING JiQiang ZHONG YiJun HU Yong Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Department of ChemistryZhejiang Normal UniversityJinhua 321004China Department of Optical Science and Engineering Fudan UniversityShanghai 200438China Hangzhou Institute of Advanced Studies Zhejiang Normal UniversityHangzhou 311231China

One of the primary roadblocks to widespread applications of rechargeable zn-air batteries is the durability issue with oxygen reduction and evolution processes(ORR/OER)bifunctional *** herein report the construction of a selfsupported air cathode for zn-air batteries made of S,N-codoped porous complex carbon nanostructures of Co/Co-Cu-S/carbon nanoplate arrays and carbon nanofibers(denoted as Co/Co-Cu-S@SNPCP-CFs).The hierarchical heteroatom-doped mesoporous carbon nanohybrids with multiple active species not only provide a high surface-to-volume ratio,exposing more catalytic sites and accelerating the charge and mass transfer,but also boost the activity and *** Co/Co-Cu-S@SNPCP-CFs catalyst reveals a small potential gap(ΔE=0.67 V)between the half-wave potential of ORR and OER potential at 10 m A ccm^(-2),demonstrating outstanding bifunctional ***,the rechargeable zn-air battery made with the as-obtained electrocatalyst exhibits a high-power density of 220 m W cm^(-2)and a long cycling time of over 800 h at 10 m A ccm^(-2),and the flexible solid-state rechargeable zn-air battery based on Co/Co-Cu-S@SNPCP-CFs self-supporting air cathode also displays a long duration time of over 60 h.

关键词： Co Co-Cu-S carbon bifunctional electrocatalyst rechargeable zn-air batteries

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Precise construction of RuPt dual single-atomic sites to optimize oxygen electrocatalytic behaviors for high-performance zn-air batteries

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Journal of Energy Chemistry 2024年第10期97卷 520-528,I0011页

作者： Xiaolin Hu Zhenkun Wu Chaohe Xu School of Science Chongqing Key Laboratory of New Energy Storage Materials and DevicesChongqing University of TechnologyChongqing 400054China School of Chemistry and Engineering Chongqing UniversityChongqing 400044China College of Materials Science and Engineering Chongqing UniversityChongqing 400044China

The development of redox bifunctional electrocatalysts with high performance,low cost,and long lifetimes is essential for achieving clean energy *** study proposed an atom capture strategy for anchoring dual single atoms(DSAs)in a zinc-zeolitic imidazolate framework(zn-ZIF),followed by calcination under an N_(2) atmosphere to synthesize ruthenium-platinum DSAs supported on a nitrogendoped carbon substrate(RuPt DSAs-NC).Theoretical calculations showed that the degree of Ru 5dxz-~*O 2p_x orbital hybridization was high when^(*)O was adsorbed at the Ru site,indicating enhanced covalent hybridization of metal sites and oxygen ligands,which benefited the adsorption of intermediate *** presence of the RuPtN_6 active center optimized the absorption-desorption behavior of intermediates,improving the electrocatalytic performance of the oxygen reduction reaction(ORR)and the oxygen evolution reaction(DER),RuPt DSAs-NC exhibited a 0.87 V high half-wave potential and a 268 mV low overpotential at 10 mA cm^(-2)in an alkaline ***,rechargeable zinc-air batteries(ZABs)achieved a peak power density of 171 MW cm^(-2).The RuPt DSAs-NC demonstrated long-term cycling for up to 500 h with superior round-trip *** study provided an effective structural design strategy to construct DSAs active sites for enhanced electrocata lytic performance.

关键词： Dual single atoms catalysts Atom capture Oxygen reduction reaction Oxygen evolution reaction rechargeable zn-air batteries

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Ultralong nitrogen/sulfur Co-doped carbon nano-hollowsphere chains with encapsulated cobalt nanoparticles for highly efficient oxygen electrocatalysis

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Carbon Energy 2023年第8期5卷 15-30页

作者： Wei Zhang Xingmei Guo Cong Li Jiang-Yan Xue Wan-Ying Xu Zheng Niu Hongwei Gu Carl Redshaw Jian-Ping Lang College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhouChina State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghaiChina College of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiangChina Department of Chemistry University of HullHullUK

The development of simple and effective strategies to prepare electrocatalysts,which possess unique and stable structures comprised of metal/nonmetallic atoms for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER),is currently an urgent ***,an efficient bifunctional electrocatalyst featured by ultralong N,S-doped carbon nano-hollow-sphere chains about 1300 nm with encapsulated Co nanoparticles(Co-CNHSCs)is *** multifunctional catalytic properties of Co together with the heteroatom-induced charge redistribution(i.e.,modulating the electronic structure of the active site)result in superior catalytic activities toward OER and ORR in alkaline *** optimized catalyst Co-CNHSC-3 displays an outstanding electrocatalytic ability for ORR and OER,a high specific capacity of 1023.6 mAh gzn^(-1),and excellent reversibility after 80 h at 10mA cm^(-2)in a zn-air battery *** work presents a new strategy for the design and synthesis of efficient multifunctional carbon-based catalysts for energy storage and conversion devices.

关键词： Co nanoparticles N S co-doping oxygen electrocatalysts rechargeable zn-air batteries ultralong carbon nano-hollow-sphere chains

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Co_(3)Mo_(3)N—An efficient multifunctional electrocatalyst

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The Innovation 2021年第2期2卷 40-46页

作者： Yao Yuan Samira Adimi Tiju Thomas Jiacheng Wang Haichuan Guo Jian Chen J.Paul Attfield Francis J.DiSalvo Minghui Yang Ningbo Institute of Materials Technology and Engineering Chinese Academy of SciencesNingbo315201China Dalian Institute of Chemical Physics Chinese Academy of SciencesDalian116023China Department of Metallurgical and Materials Engineering Indian Institute of Technology Madras AdyarChennai 600036Tamil NaduIndia State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China Centre for Science at Extreme Conditions and School of Chemistry University of EdinburghEdinburghEH93JZUK Department of Chemistry and Chemical Biology Cornell UniversityNew York14853USA

Efficient catalysts are required for both oxidative and reductive reactions of hydrogen and oxygen in sustainable energy conversion ***,current precious metal-based electrocatalysts do not perform well across the full range of reactions and reported multifunctional catalysts are all complex ***,we show that singlephase porous Co3Mo3N prepared via a facile method is an efficient and reliable electrocatalyst for three essential energy conversion reactions;oxygen evolution reaction(OER),oxygen reduction reaction(ORR),and hydrogen evolution reaction(HER)in alkaline ***3-Mo3N presents outstanding OER,ORR,and HER activity with high durability,comparable with the commercial catalysts RuO2 for OER and Pt/C for ORR and *** practical demonstrations,Co3Mo3N gives high specific capacity(850 mA h gzn^(-1) at 10 mA cm^(-2))as the cathode in a zinc-air battery,and a low potential(1.63 V at 10 mA cm^(-2))used in a water-splitting *** of Co and Mo d-states appear to result in high ORR and HER performance,while the OER properties result from a cobalt oxide-rich activation surface *** findings will inspire further development of bimetallic nitrides as cost-effective and versatile multifunctional catalysts that will enable scalable usage of electrochemical energy devices.

关键词： ternary nitrides multifunctional electrocatalysts rechargeable zn-air batteries water splitting

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