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>In situ growth of phosphorized ZIF-67-derived amorphous CoP/Cu2O@CF electrocatalyst

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1430-1439 doi: 10.1007/s11705-023-2320-1

Abstract: The intermediate product was phosphorized to obtain final electrocatalyst (CoP/Cu2O@CF) with

Keywords: CoP/Cu2O@CF     electrocatalyst     phosphorization     HER     DFT    

Polypyrrole@NiCo hybrid nanotube arrays as high performance electrocatalyst for hydrogen evolution reaction

Shenghua Ye, Gaoren Li

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 473-480 doi: 10.1007/s11705-018-1724-9

Abstract: polypyrrole(PPy)@NiCo hybrid nanotube arrays have been successfully fabricated as a high performance electrocatalyst

Keywords: NiCo alloy     polypyrrole     hybrid nanotube     electrocatalyst     hydrogen evolution reaction    

Erratum to: Polypyrrole@NiCo hybrid nanotube arrays as high performance electrocatalyst for hydrogen

Shenghua Ye, Gaoren Li

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 845-845 doi: 10.1007/s11705-019-1879-z

NiFeRuOx nanosheets on Ni foam as an electrocatalyst for efficient

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1698-1706 doi: 10.1007/s11705-023-2334-8

Abstract: The electrocatalyst NiFeRuOx/NF, comprised of NiFeRuOx nanosheets

Keywords: NiFeRuOx nanosheets     Ni foam     electrocatalysis     overall seawater splitting     solar-driven system    

Sulfur-deficient CoNi2S4 nanoparticles-anchored porous carbon nanofibers as bifunctional electrocatalyst

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1707-1717 doi: 10.1007/s11705-023-2308-x

Abstract: carbon nanofibers-coupled CoNi2S4 nanoparticles are prepared as bifunctional electrocatalyst

Keywords: nanoparticle     sulfur vacancy     porous carbon nanofiber     transition metal sulfides     electrolysis    

nanostructured NiCoP nanosheets supported on N-doped carbon coated Ni foam as a highly active bifunctional electrocatalyst

Miaomiao Tong, Lei Wang, Peng Yu, Xu Liu, Honggang Fu

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 417-424 doi: 10.1007/s11705-018-1711-1

Abstract:

A highly active bi-functional electrocatalyst towards both hydrogen and oxygen evolution reactionsAs a bifunctional electrocatalyst, the NiCoP/NF@NC electrode needs overpotentials of 31.8 mV for hydrogen

Keywords: bimetallic phosphides     N-doped carbon     self-support     hydrogen evolution     oxygen evolution    

Nickel-carbonate nanowire array: An efficient and durable electrocatalyst for water oxidation under nearly

Yuyao Ji, Min Ma, Xuqiang Ji, Xiaoli Xiong, Xuping Sun

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 467-472 doi: 10.1007/s11705-018-1717-8

Abstract:

It is highly attractive but still remains a great challenge to develop an efficient electrocatalyst

Keywords: water oxidation     NiCO3/NF     nearly neutral conditions     superior activity     electocatalyst    

Interface engineering for enhancing electrocatalytic oxygen evolution reaction of CoS/CeO heterostructures

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 3,   Pages 376-383 doi: 10.1007/s11705-021-2062-x

Abstract: To realize renewable energy conversion, it is important to develop low-cost and high-efficiency electrocatalystIn this communication, a novel bijunction CoS/CeO2 electrocatalyst grown on carbon cloth isSuch an electrocatalyst exhibits outstanding electrocatalytic activity with a low overpotential of 311

Keywords: interface engineering     CoS/CeO2     electrodeposition     electrocatalyst     oxygen evolution reaction    

Copper nanoparticles/polyaniline-derived mesoporous carbon electrocatalysts for hydrazine oxidation

Tao Zhang, Tewodros Asefa

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 329-338 doi: 10.1007/s11705-018-1741-8

Abstract: Copper nanoparticles-decorated polyaniline-derived mesoporous carbon that can serve as noble metal-free electrocatalyst

Keywords: copper nanoparticles     mesoporous carbon     noble metal-free electrocatalyst     hydrazine oxidation reaction    

Platinum on nitrogen doped graphene and tungsten carbide supports for ammonia electro-oxidation reaction

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 930-938 doi: 10.1007/s11705-021-2130-2

Abstract: Platinum has been established as the best electrocatalyst for ammonia oxidation in aqueous alkaline media

Keywords: Ammonia electro-oxidation reaction     electrocatalyst supports     platinum     nitrogen doped graphene     tungsten    

Graphene-reinforced metal-organic frameworks derived cobalt sulfide/carbon nanocomposites as efficient multifunctional electrocatalysts

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1487-1499 doi: 10.1007/s11705-021-2085-3

Abstract: Developing cost-effective electrocatalysts for oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) is vital in energy conversion and storage applications. Herein, we report a simple method for the synthesis of graphene-reinforced CoS/C nanocomposites and the evaluation of their electrocatalytic performance for typical electrocatalytic reactions. Nanocomposites of CoS embedded in N, S co-doped porous carbon and graphene (CoS@C/Graphene) were generated via simultaneous sulfurization and carbonization of one-pot synthesized graphite oxide-ZIF-67 precursors. The obtained CoS@C/Graphene nanocomposites were characterized by X-ray diffraction, Raman spectroscopy, thermogravimetric analysis-mass spectroscopy, scanning electronic microscopy, transmission electronic microscopy, X-ray photoelectron spectroscopy and gas sorption. It is found that CoS nanoparticles homogenously dispersed in the in situ formed N, S co-doped porous carbon/graphene matrix. The CoS@C/10Graphene composite not only shows excellent electrocatalytic activity toward ORR with high onset potential of 0.89 V, four-electron pathway and superior durability of maintaining 98% of current after continuously running for around 5 h, but also exhibits good performance for OER and HER, due to the improved electrical conductivity, increased catalytic active sites and connectivity between the electrocatalytic active CoS and the carbon matrix. This work offers a new approach for the development of novel multifunctional nanocomposites for the next generation of energy conversion and storage applications.

Keywords: MOF derivative     graphene     electrocatalyst     oxygen reduction reaction     oxygen evolution reaction     hydrogen    

Research Progress in Proton Exchange Membrane Fuel Cell

Ren Xueyou

Strategic Study of CAE 2005, Volume 7, Issue 1,   Pages 86-94

Abstract: hydrogen storage technique, and some key technique including PEM, bipolar board, membrane electrode and electrocatalyst

Keywords: FC     PEM     bipolar board     membrane electrode     electrocatalyst     developing status    

Heterometallic cluster-based organic frameworks as highly active electrocatalysts for oxygen reduction and oxygen evolution reaction: a density functional theory study

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 570-580 doi: 10.1007/s11705-022-2247-y

Abstract: Recently, metal–organic frameworks are one of the potential catalytic materials for electrocatalytic applications. The oxygen reduction reaction and oxygen evolution reaction catalytic activities of heterometallic cluster-based organic frameworks are investigated using density functional theory. Firstly, the catalytic activities of heterometallic clusters are investigated. Among all heterometallic clusters, Fe2Mn–Mn has a minimum overpotential of 0.35 V for oxygen reduction reaction, and Fe2Co–Co possesses the smallest overpotential of 0.32 V for oxygen evolution reaction, respectively 100 and 50 mV lower than those of Pt(111) and RuO2(110) catalysts. The analysis of the potential gap of Fe2M clusters indicates that Fe2Mn, Fe2Co, and Fe2Ni clusters possess good bifunctional catalytic activity. Additionally, the catalytic activity of Fe2Mn and Fe2Co connected through 3,3′,5,5′-azobenzenetetracarboxylate linker to form Fe2M–PCN–Fe2M is explored. Compared with Fe2Mn–PCN–Fe2Mn, Fe2Co–PCN–Fe2Co, and isolated Fe2M clusters, the mixed-metal Fe2Co–PCN–Fe2Mn possesses excellent bifunctional catalytic activity, and the values of potential gap on the Mn and Co sites of Fe2Co–PCN–Fe2Mn are 0.69 and 0.70 V, respectively. Furthermore, the analysis of the electron structure indicates that constructing a mixed-metal cluster can efficiently enhance the electronic properties of the catalyst. In conclusion, the mixed-metal cluster strategy provides a new approach to further design and synthesize high-efficiency bifunctional electrocatalysts.

Keywords: bimetallic metal–organic frameworks     bifunctional electrocatalyst     density functional theory     oxygen    

Synthesis of cobalt vanadium nanomaterials for efficient electrocatalysis of oxygen evolution

Meifeng Hao, Mingshu Xiao, Lihong Qian, Yuqing Miao

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 409-416 doi: 10.1007/s11705-017-1689-0

Abstract:

A low-cost and high-activity catalyst for oxygen evolution reaction (OER) is the key to the water splitting technology for hydrogen generation. Here we report the use of three solvents, DMF, ethanol and glycol, in the solvothermal synthesis of three nano-catalysts, Co3(VO4)2-I, Co3(VO4)2-II, and Co3(VO4)2-III, respectively. Transmission electron microscope shows Co3(VO4)2-I, II, and III exist as ultrafine nanosheets, ultrathin nanofilms, and ultrafine nanosheet-comprised microspheres, respectively. These Co3(VO4)2 catalysts exhibit OER electrocatalysis, among which the Co3(VO4)2-II shows the lowest onset overpotential of 310 mV and only requires a small overpotential of 330 mV to drive current density of 10 mA/cm2. Due to their high surface free energy, the ultrathin nanofilms of Co3(VO4)2-II exhibits a good immobilization effect with the high electrocatalytic activity for OER.

Keywords: Co3(VO4)2     oxygen evolution reaction     electrocatalyst     water splitting    

Ionic liquid modified Pt/C electrocatalysts for cathode application in proton exchange membrane fuel cells

Huixin Zhang, Jinying Liang, Bangwang Xia, Yang Li, Shangfeng Du

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 695-701 doi: 10.1007/s11705-019-1838-8

Abstract: The modification of Pt/C catalyst by using ionic liquids to improve their catalyst activities has been reported by many researchers, but their practical behavior in operating fuel cells is still unknown. In this work, we study the ionic liquid modified Pt/C nanoparticle catalysts within cathodes for proton exchange membrane fuel cells. The influence of the ionic liquid amount, adsorption times and dispersing solvents are investigated. The experiment results show the best performance enhancement is achieved through two-time surface modification with 2 wt-% ionic liquid solution. The mechanisms are explored with the attribution to the high oxygen solubility in the ionic liquid enabling an improved oxygen diffusion in micropores and to good hydrophobicity facilitating water expelling from the active sites in fuel cell operation.

Keywords: ionic liquid     PEMFC     electrode     oxygen reduction reaction     electrocatalyst     adsorption    

Title Author Date Type Operation

>In situ growth of phosphorized ZIF-67-derived amorphous CoP/Cu2O@CF electrocatalyst

Journal Article

Polypyrrole@NiCo hybrid nanotube arrays as high performance electrocatalyst for hydrogen evolution reaction

Shenghua Ye, Gaoren Li

Journal Article

Erratum to: Polypyrrole@NiCo hybrid nanotube arrays as high performance electrocatalyst for hydrogen

Shenghua Ye, Gaoren Li

Journal Article

NiFeRuOx nanosheets on Ni foam as an electrocatalyst for efficient

Journal Article

Sulfur-deficient CoNi2S4 nanoparticles-anchored porous carbon nanofibers as bifunctional electrocatalyst

Journal Article

nanostructured NiCoP nanosheets supported on N-doped carbon coated Ni foam as a highly active bifunctional electrocatalyst

Miaomiao Tong, Lei Wang, Peng Yu, Xu Liu, Honggang Fu

Journal Article

Nickel-carbonate nanowire array: An efficient and durable electrocatalyst for water oxidation under nearly

Yuyao Ji, Min Ma, Xuqiang Ji, Xiaoli Xiong, Xuping Sun

Journal Article

Interface engineering for enhancing electrocatalytic oxygen evolution reaction of CoS/CeO heterostructures

Journal Article

Copper nanoparticles/polyaniline-derived mesoporous carbon electrocatalysts for hydrazine oxidation

Tao Zhang, Tewodros Asefa

Journal Article

Platinum on nitrogen doped graphene and tungsten carbide supports for ammonia electro-oxidation reaction

Journal Article

Graphene-reinforced metal-organic frameworks derived cobalt sulfide/carbon nanocomposites as efficient multifunctional electrocatalysts

Journal Article

Research Progress in Proton Exchange Membrane Fuel Cell

Ren Xueyou

Journal Article

Heterometallic cluster-based organic frameworks as highly active electrocatalysts for oxygen reduction and oxygen evolution reaction: a density functional theory study

Journal Article

Synthesis of cobalt vanadium nanomaterials for efficient electrocatalysis of oxygen evolution

Meifeng Hao, Mingshu Xiao, Lihong Qian, Yuqing Miao

Journal Article

Ionic liquid modified Pt/C electrocatalysts for cathode application in proton exchange membrane fuel cells

Huixin Zhang, Jinying Liang, Bangwang Xia, Yang Li, Shangfeng Du

Journal Article