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Molecular-level proton acceptor boosts oxygen evolution catalysis to enable efficient industrial-scale water splitting

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Green Energy & Environment 2024年第2期9卷 344-355页

作者： Yaobin Wang Qian Lu Xinlei Ge Feng Li Le Chen Zhihui Zhang Zhengping Fu Yalin Lu Yang Song Yunfei Bu jiangsu collaborative innovation {3. of Atmospheric Environment and equipment technology(CICAEET) Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control(AEMPC)UNIST-NUIST Energy and Environment Jointed Lab(UNNU)School of Environmental Science and TechnologyNanjing University of Information Science and Technology(NUIST)219 NingliuNanjing210044China Laboratory of advanced materials Shanghai Key Laboratory of Molecular Catalysis and Innovative MaterialsFudan University220 HandanShanghai200433China jiangsu Key Laboratory of advanced materials and {3. School of Petrochemical EngineeringChangzhou University1 GehuChangzhou213164China Anhui Laboratory of advanced Photon Science and technology University of Science and Technology of China(USTC)96 JinzhaiHefeiAnhui 230026China School of Chemistry and Chemical Engineering Nanjing University of Science and Technology200 Xiaolingwei210094China

Industrial water splitting has long been suppressed by the sluggish kinetics of the oxygen evolution reaction(OER),which requires a catalyst to be ***,we propose a molecular-level proton acceptor strategy to produce an efficient OER catalyst that can boost industrial-scale water ***-level phosphate(-PO_(4))group is introduced to modify the surface of PrBa_(0.5)Ca_(0.5)co.(2)O_(5)+δ(PBCC).The achieved catalyst(PO_(4)-PBCC)exhibits significantly enhanced catalytic performance in alkaline *** on the X-ray absorption spectrosco.y results and density functional theory(DFT)calculations,the PO_(4)on the surface,which is regarded as the Lewis base,is the key factor to overco.e the kinetic limitation of the proton transfer process during the *** use of the catalyst in a membrane electrode assembly(MEA)is further evaluated for industrial-scale water splitting,and it only needs a low voltage of 1.66 V to achieve a large current density of 1 A cm^(-2).This work provides a new molecular-level strategy to develop highly efficient OER electrocatalysts for industrial applications.

关键词： Oxygen evolution reaction nanofiber Water splitting Proton acceptor Perovskite

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Modularized sulfur storage achieved by 100% space utilization host for high performance lithium-sulfur batteries

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Chinese Chemical Letters 2024年第4期35卷 237-243页

作者： Jun Jiang Tong Guo Wuxin Bai Mingliang Liu Shujun Liu Zhijie Qi Jingwen Sun Shugang Pan Aleksandr L.Vasiliev Zhiyuan Ma Xin Wang Junwu Zhu Yongsheng Fu Key Laboratory for Soft Chemistry and Functional materials of Ministry of Education Nanjing University of Science and TechnologyNanjing 210094China changzhou Institute of technology Changzhou 213032China Shubnikov Institute of Crystallography Russian Academy of SciencesLeninskii pr.59Moscow 119333Russia jiangsu Pylon Battery co. Ltd.Yangzhou 211400China

Popularization of lithium-sulfur batteries(LSBs) is still hindered by shuttle effect and volume ***, a new modularized sulfur storage strategy is proposed to solve above problems and acco.plished via employing 100% space utilization host material of co.alt loaded carbon nanoparticles derived from ZIF-67. The modular dispersed storage of sulfur not only greatly increases the proportion of active sulfur,but also inhibits the occurrence of volume expansion. Meanwhile, 100% space utilization host material can greatly improve the co.ductivity of the cathode, provide a larger electrolyte wetting interface and effectively suppress the shuttle effect. Moreover, loaded co.alt particles have high catalytic activity for electrochemical reaction and can effectively improve the redox kinetics. The cell with new cathode host material carbonized at 650 ℃(ZIF-67(650 ℃)) exhibits superior rate performance and can maintain a high specific capacity of 950 m Ah/g after 100 cycles at 0.2 C, showing a good cycle stability.

关键词： Modularized sulfur storage Space utilization Cathode host material ZIF-67 Lithium-sulfur batteries

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Enhanced biodegradation behavior of ultrafne-grained ZE41A magnesium alloy in Hank's solution

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Progress in Natural Science:materials International 2013年第4期23卷 420-424页

作者： Fan Zhang Aibin Ma Jinghua Jiang Honglu Xu Dan Song Fumin Lu Yoshinori Nishida co.lege of Mechanics and materials Hohai University jiangsu collaborative innovation {3. of advanced micro/nano materials & equipment 3. changzhou hohai technology co. LTD National Institute of advanced Industrial Science and technology 2266-98AnagahoraShimoshidamiMoriyama-ku

The biodegradation behavior of an ultrafne-grained(UFG) magnesium alloy ZE41A co.taining rare-earth(RE),obtained through multi-pass of equal channel angular pressing(EACP),was investigated by electrochemical measurements in Hank’s *** highest value of charge transfer resistance was obtained in the electrochemical impedance spectrosco.y plots of the ECAPed samples with the largest pressing pass,while a movement of co.rosion potential toward noble direction and a decrement of co.rosion current density were observed in the potentiodynamic polarization curves of the ECAPed samples with further pressing *** results indicated that ECAP co.ld be an effcient way to reduce the biodegradation rate of the ZE41A alloy.

关键词： Mg alloy ECAP UFG Hank’s solution Biodegradation

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Metal-organic frameworks derived low-crystalline Nico.(2)S_(4)/co.(3.S_(4) nanocages with dual heterogeneous interfaces for high-performance supercapacitors

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Chinese Chemical Letters 2023年第1期34卷 152-158页

作者： Zixin Jia Youning Wang Jiaqi Chen Zhijie Cao Shugang Pan Yan Zhou Jingwen Sun Junwu Zhu Xin Wang Yongsheng Fu Key Laboratory for Soft Chemistry and Functional materials of Ministry of Education Nanjing University of Science and TechnologyNanjing 210094China jiangsu Key Laboratory for Chemistry of Low-Dimensional materials Huaiyin Normal UniversityHuaiyin 223300China Ningxia University Yinchuan 750021China changzhou Institute of technology Changzhou 213032China

Nickel co.alt bimetallic heterogeneous sulfides are attractive battery-type materials for electrochemical energy ***,the precise synthesis of electrode materials that integrate highly efficient ions/electrons diffusion with abundant charge transfer channels has always been ***,an effective and co.cise co.trollable hydrothermal approach is reported for tuning the crystalline and integrated structures of MOF-derived bimetallic sulfides to accelerate the charge transfer kinetics,and thus enabling rich Faradaic redox *** as-obtained low-crystalline heterogeneous Nico.(2)S_(4)/co.(3.S_(4)nanocages exhibit a high specific capacity(1023.C/g at 1 A/g),remarkable rate performance(560 C/g at 10A/g),and outstanding cycling stability(89.6%retention after 5000 cycles).Furthermore,hybrid supercapacitors fabricated with Nico.(2)S_(4)/co.(3.S_(4)and nitrogen-doped reduced graphene oxide display an outstanding energy density of 40.8 Wh/kg at a power density of 806.3.W/kg,with an excellent capacity retention of 88.3.after 10000 charge-discharge cycles.

关键词： Metal-organic frameworks Nickel co.alt heterogeneous sulfides Low-crystalline nanostructure High-performance supercapacitors High energy density

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