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Effect of placement angles on wireless electrocoagulation for bipolar aluminum electrodes

Zhenlian Qi, Jinna Zhang, Shijie You

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 3, doi: 10.1007/s11783-018-1034-y

Abstract: We in our previous study reported the wireless electrocoagulation (WEC) based on bipolar electrochemistryOne of the most important advantages of WEC is the omission of ohmic connection between bipolar electrodeIn this study, the impact of placement angle of bipolar aluminum electrode on WEC was investigated toprovide a detailed analysis on the correlations between the bipolar electrode placement angle and bipolar

Keywords： Bipolar electrochemistry     Wireless electrocoagulation     Placement angle    

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mechanistic study on electrocoagulation process for municipal wastewater treatment based on horizontal bipolar

Zhenlian Qi, Shijie You, Ranbin Liu, C. Joon Chuah

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1215-3

Abstract: This work presents an integrated EC process based on horizontal bipolar electrodes (BPEs).

Keywords： Electrocoagulation     Bipolar electrodes     Municipal wastewater     Simulations    

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Research progress in tribo-electrochemistry and tribo-electrochemical polishing

ZHAI Wenjie

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4,   Pages 463-467 doi: 10.1007/s11465-007-0080-0

Abstract: In this paper, the status quo and recent progress in the research on tribo-electrochemistry in aqueous

Keywords： tribo-electrochemical mechanisms     planarization     non-aqueous     tribo-electrochemistry     summary    

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The treatment of black-odorous water using tower bipolar electro-flocculation including the removal of

Huan He, Qinjin Yu, Chaochao Lai, Chen Zhang, Muhan Liu, Bin Huang, Hongping Pu, Xuejun Pan

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1310-5

Abstract: . • An aluminum bipolar electrode gave the best oxygen enrichment and pollutant removal. • Changes ofElectro-flocculation in a bubble column tower with a bipolar electrode (BPE) was tested in an attemptThe BPE reactor tested had a Ti/Ta2O5-IrO2 anode and a graphite cathode with an iron or aluminum bipolarThe inclusion of the bipolar electrode was found to distinctly improved the system’s conductivity.An aluminum bipolar electrode performed better than an iron one.

Keywords： Black-odorous water     Bipolar electrodes     Flocculation     Floatation     Oxygen enrichment     Turbidity    

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Multistage-batch bipolar membrane electrodialysis for base production from high-salinity wastewater

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 5,   Pages 764-773 doi: 10.1007/s11705-021-2114-2

Abstract: Bipolar membrane electrodialysis (BMED) is considered a state-of-the-art technology for the conversion

Keywords： bipolar membrane electrodialysis     multistage-batch     base production     high-salinity wastewater    

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Study on tribological and electrochemistry properties of metal materials in H2O2 solutions

Chengqing YUAN, Li YU, Jian LI, Xinping YAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1,   Pages 93-98 doi: 10.1007/s11465-012-0313-8

Abstract: There were significant differences in the tribological and electrochemistry properties of the rubbing

Keywords： hydrogen peroxide     wear     corrosion     wear mechanism    

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Performance of activated carbon coated graphite bipolar electrodes on capacitive deionization method

Hossein D. Atoufi, Hasti Hasheminejad, David J. Lampert

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1278-1

Abstract: Abstract • Graphite bipolar electrodes act as an appropriate bed for the CDI process. • Activated carbonIn this research, experiments were performed with a pair of graphite bipolar electrodes that were coated

Keywords： Capacitive deionization (CDI)     Desalination     Electrical conductivity (EC)     Graphite bipolar electrode     Activated    

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Development of 8-inch Key Processes for Insulated-Gate Bipolar Transistor Article

Guoyou Liu,Rongjun Ding,Haihui Luo

Engineering 2015, Volume 1, Issue 3,   Pages 361-366 doi: 10.15302/J-ENG-2015043

Abstract: the fourth-generation high-voltage double-diffused metal-oxide semiconductor (DMOS+) insulated-gate bipolar

Keywords： insulated-gate bipolar transistor (IGBT)     high power density     trench gate     8-inch     rail transportation    

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Enabling nickel ferrocyanide nanoparticles for high-performance ammonium ion storage

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 2,   Pages 226-235 doi: 10.1007/s11705-022-2198-3

Abstract: Prussian blue and its analogs are extensively investigated as a cathode for ammonium-ion batteries. However, they often suffer from poor electronic conductivity. Here, we report a Ni2Fe(CN)6/multiwalled carbon nanotube composite electrode material, which is prepared using a simple coprecipitation approach. The obtained material consists of nanoparticles with sizes 30–50 nm and the multiwalled carbon nanotube embedded in it. The existence of multiwalled carbon nanotube ensures that the Ni2Fe(CN)6/multiwalled carbon nanotube composite shows excellent electrochemical performance, achieving a discharge capacity of 55.1 mAh·g–1 at 1 C and 43.2 mAh·g–1 even at 15 C. An increase in the ammonium-ion diffusion coefficient and ionic/electron conductivity based on kinetic investigations accounts for their high performance. Furthermore, detailed ex situ characterizations demonstrate that Ni2Fe(CN)6/multiwalled carbon nanotube composite offers three advantages: negligible lattice expansion during cycling, stable structure, and the reversible redox couple. Therefore, the Ni2Fe(CN)6/multiwalled carbon nanotube composite presents a long cycling life and high rate capacity. Finally, our study reports a desirable material for ammonium-ion batteries and provides a practical approach for improving the electrochemical performance of Prussian blue and its analogs.

Keywords： nickel ferrocyanides     NH4+     electrochemistry     Prussian blue     aqueous ammonium ion    

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Electrochemical CO reduction to C products over CuZn intermetallic catalysts synthesized by electrodeposition

Frontiers in Energy doi: 10.1007/s11708-023-0898-0

Abstract: Electrocatalytic CO2 reduction (ECR) offers an attractive approach to realizing carbon neutrality and producing valuable chemicals and fuels using CO2 as the feedstock. However, the lack of cost-effective electrocatalysts with better performances has seriously hindered its application. Herein, a one-step co-electrodeposition method was used to introduce Zn, a metal with weak *CO binding energy, into Cu to form Cu/Zn intermetallic catalysts (Cu/Zn IMCs). It was shown that, using an H-cell, the high Faradaic efficiency of C2+ hydrocarbons/alcohols (FEC2+) could be achieved in ECR by adjusting the surface metal components and the applied potential. In suitable conditions, FEC2+ and current density could be as high as 75% and 40 mA/cm2, respectively. Compared with the Cu catalyst, the Cu/Zn IMCs have a lower interfacial charge transfer resistance and a larger electrochemically active surface area (ECSA), which accelerate the reaction. Moreover, the *CO formed on Zn sites can move to Cu sites due to its weak binding with *CO, and thus enhance the C–C coupling on the Cu surface to form C2+ products.

Keywords： carbon dioxide electroreduction     electrochemistry     co-electrodeposition     intermetallic catalysts     value-added    

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Research Progress in Proton Exchange Membrane Fuel Cell

Ren Xueyou

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

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

Keywords： FC     PEM     bipolar board     membrane electrode     electrocatalyst     developing status    

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Sustainable Generation of Sulfate Radicals and Decontamination of Micropollutants via Sequential Electrochemistry Article

Wentian Zheng,Shijie You,Yuan Yao,Nanqi Ren,Bin Ding,Fang Li,Yanbiao Liu

Engineering 2023, Volume 30, Issue 11,   Pages 144-152 doi: 10.1016/j.eng.2022.12.005

Abstract: advanced chemical-free strategy for micropollutants decontamination that is solely based on sequential electrochemistry

Keywords： Advanced oxidation     Chain reaction     Sulfate radical     Micropollutants     Sequential electrochemistry    

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nanoparticle decorated N-doped carbons derived from a cobalt covalent organic framework for oxygen electrochemistry

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1550-1560 doi: 10.1007/s11705-021-2104-4

Abstract: The low cost and highly efficient construction of electrocatalysts has attracted significant attention owing to the use of clean and sustainable energy technologies. In this work, cobalt nanoparticle decorated N-doped carbons (Co@NC) are synthesized by the pyrolysis of a cobalt covalent organic framework under an inert atmosphere. The Co@NC demonstrates improved electrocatalytic capabilities compared to N-doped carbon without the addition of Co nanoparticles, indicating the important role of cobalt. The well-dispersed active sites (Co-Nx) and the synergistic effect between the carbon matrix and Co nanoparticles greatly enhance the electrocatalytic activity for the oxygen reduction reaction. In addition, the Co content has a significant effect on the catalytic activity. The resulting Co@NC-0.86 exhibits a superb electrocatalytic activity for the oxygen reduction reaction in an alkaline electrolyte in terms of the onset potential (0.90 V), half-wave potential (0.80 V) and the limiting current density (4.84 mA·cm–2), and a high selectivity, as well as a strong methanol tolerance and superior durability, these results are comparable to those of the Pt/C catalyst. Furthermore, the superior bifunctional activity of Co@NC-0.86 was also confirmed in a home-built Zn-air battery, signifying the possibility for application in electrode materials and in current energy conversion and storage devices.

Keywords： cobalt embedment     N-doped carbons     covalent organic framework     oxygen reduction     Zn-air battery    

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国际电化学学会第70届年会（70th Annual Meeting of the International Society of Electrochemistry）

Conference Date: 4 Aug 2019

Conference Place: 南非/德班

Administered by: 国际电化学学会（ISE）

Metal phosphonate-derived cobalt/nickel phosphide@N-doped carbon hybrids as efficient bifunctional oxygen electrodes for Zn−air batteries

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 9,   Pages 1367-1376 doi: 10.1007/s11705-022-2153-3

Abstract: The exploration of efficient bifunctional electrocatalysts for oxygen reduction reaction and oxygen evolution reaction is pivotal for the development of rechargeable metal–air batteries. Transition metal phosphides are emerging as promising catalyst candidates because of their superb activity and low cost. Herein, a novel metal phosphonate-derived cobalt/nickel phosphide@N-doped carbon hybrid was developed by a carbothermal reduction of cobalt/nickel phosphonate hybrids with different Co/Ni molar ratios. The metal phosphonate derivation method achieved an intimately coupled interaction between metal phosphides and a heteroatom-doped carbon substrate. The resultant Co2P/Ni3P@NC-0.2 enables an impressive electrocatalytic oxygen reduction reaction activity, comparable with those of state-of-the-art Pt/C catalysts in terms of onset potential (0.88 V), 4e‒ selectivity, methanol tolerance, and long-term durability. Moreover, remarkable oxygen evolution reaction activity was also observed in alkaline conditions. The high activity is ascribed to the N-doping, abundant accessible catalytic active sites, and the synergistic effect among the components. This work not only describes a high-efficiency electrocatalyst for both oxygen reduction reaction and oxygen evolution reaction, but also highlights the application of metal phosphonate hybrids in fabricating metal phosphides with tunable structures, which is of great significance in the energy conversion field.

Keywords： metal phosphonate     cobalt/nickel phosphide     N-doped carbon     oxygen electrochemistry     Zn−air battery    

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Title Author Date Type Operation

Effect of placement angles on wireless electrocoagulation for bipolar aluminum electrodes

Zhenlian Qi, Jinna Zhang, Shijie You

Journal Article

mechanistic study on electrocoagulation process for municipal wastewater treatment based on horizontal bipolar

Zhenlian Qi, Shijie You, Ranbin Liu, C. Joon Chuah

Journal Article

Research progress in tribo-electrochemistry and tribo-electrochemical polishing

ZHAI Wenjie

Journal Article

The treatment of black-odorous water using tower bipolar electro-flocculation including the removal of

Huan He, Qinjin Yu, Chaochao Lai, Chen Zhang, Muhan Liu, Bin Huang, Hongping Pu, Xuejun Pan

Journal Article

Multistage-batch bipolar membrane electrodialysis for base production from high-salinity wastewater

Journal Article

Study on tribological and electrochemistry properties of metal materials in H2O2 solutions

Chengqing YUAN, Li YU, Jian LI, Xinping YAN

Journal Article

Performance of activated carbon coated graphite bipolar electrodes on capacitive deionization method

Hossein D. Atoufi, Hasti Hasheminejad, David J. Lampert

Journal Article

Development of 8-inch Key Processes for Insulated-Gate Bipolar Transistor

Guoyou Liu,Rongjun Ding,Haihui Luo

Journal Article

Enabling nickel ferrocyanide nanoparticles for high-performance ammonium ion storage

Journal Article

Electrochemical CO reduction to C products over CuZn intermetallic catalysts synthesized by electrodeposition

Journal Article

Research Progress in Proton Exchange Membrane Fuel Cell

Ren Xueyou

Journal Article

Sustainable Generation of Sulfate Radicals and Decontamination of Micropollutants via Sequential Electrochemistry

Wentian Zheng,Shijie You,Yuan Yao,Nanqi Ren,Bin Ding,Fang Li,Yanbiao Liu

Journal Article

nanoparticle decorated N-doped carbons derived from a cobalt covalent organic framework for oxygen electrochemistry

Journal Article

国际电化学学会第70届年会（70th Annual Meeting of the International Society of Electrochemistry）

4 Aug 2019

Conference Information

Metal phosphonate-derived cobalt/nickel phosphide@N-doped carbon hybrids as efficient bifunctional oxygen electrodes for Zn−air batteries

Journal Article