ChemElectroChem最新文献_第5页

Front Cover: Electrocatalytic Performance and Kinetic Behavior of Anion-Intercalated Borate-Based NiFe LDH in Alkaline OER (ChemElectroChem 22/2024) 封面：碱性 OER 中阴离子钙化硼酸盐基镍铁 LDH 的电催化性能和动力学行为（ChemElectroChem 22/2024）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-19 DOI: 10.1002/celc.202482201

Maike Berger, Alexandra Markus, Stefan Palkovits, Prof. Regina Palkovits

引用次数: 0

Electro-Oxidative Extraction of Methanol from Lignin Using a Three-Dimensional Graphite Anode

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-19 DOI: 10.1002/celc.202400464

Zichun Xiong, Kazuyo Kobayashi, Aki Miyawaki, Shinya Teranishi, Yoshiharu Sawada, Takashi Hibino

{"title":"Electro-Oxidative Extraction of Methanol from Lignin Using a Three-Dimensional Graphite Anode","authors":"Zichun Xiong, Kazuyo Kobayashi, Aki Miyawaki, Shinya Teranishi, Yoshiharu Sawada, Takashi Hibino","doi":"10.1002/celc.202400464","DOIUrl":"https://doi.org/10.1002/celc.202400464","url":null,"abstract":"This paper reports an electrochemical approach that uses lignin as a resource for renewable and sustainable methanol production. The aromatic rings of lignin have methoxy substituents, which can be oxidatively demethylated to methanol by active oxygen produced at the anode. A graphite electrode fabricated in a sponge form provided sufficient reaction space for the lignin feedstock, efficiently generated active oxygen species from water, and considerably suppressed the overoxidation of methanol to carbon dioxide. As a result, the methanol yield reached approximately 70 % at a temperature of 75 °C, atmospheric pressure, and anode potential of +0.57 V. Another advantage of this technique is that hydrogen evolution reaction (HER) occurred at the cathode and the cathode potential was held at approximately −0.5 V during the HER. Therefore, the cell voltage required for lignin electrolysis was 1.1 V or lower, which means that hydrogen as well as methanol was produced under mild conditions.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"12 2","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400464","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143116651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrocatalytic Performance and Kinetic Behavior of Anion-Intercalated Borate-Based NiFe LDH in Alkaline OER 阴离子钝化硼酸盐基镍铁 LDH 在碱性 OER 中的电催化性能和动力学行为

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-19 DOI: 10.1002/celc.202400457

Maike Berger, Alexandra Markus, Stefan Palkovits, Prof. Regina Palkovits

{"title":"Electrocatalytic Performance and Kinetic Behavior of Anion-Intercalated Borate-Based NiFe LDH in Alkaline OER","authors":"Maike Berger, Alexandra Markus, Stefan Palkovits, Prof. Regina Palkovits","doi":"10.1002/celc.202400457","DOIUrl":"https://doi.org/10.1002/celc.202400457","url":null,"abstract":"The synthesis of hydrogen via water electrolysis is an important step towards resolving the energy crisis and impeding global warming, as hydrogen can be used as a green energy carrier. The oxygen evolution as one half-cell reaction (OER) is currently limiting efficient water splitting due to kinetic inhibition as well as a complex mechanism, causing a large overpotential. Nickel-iron layered double hydroxides (LDH) were found to be suitable OER catalysts, as they are cost effective, stable and highly active. This work focuses on the intercalation of different organic and inorganic borates into the LDH interlayers to study their influence on OER. Besides activity and stability measurements, three borate candidates were chosen for a kinetic study, including steady-state Tafel analysis and reaction order plots. It was found that the Bockris pathway with the second step as rate-determining step was predominant for all three catalysts. Of all candidates, the intercalation of borate resulted in the highest performance, which was associated with a high reducibility affecting the active metal sites.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 22","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400457","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical Synthesis of Purine Alkaloid Metabolites from Caffeine

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-14 DOI: 10.1002/celc.202400439

Ridho Asra, Alan M. Jones

{"title":"Electrochemical Synthesis of Purine Alkaloid Metabolites from Caffeine","authors":"Ridho Asra, Alan M. Jones","doi":"10.1002/celc.202400439","DOIUrl":"https://doi.org/10.1002/celc.202400439","url":null,"abstract":"The development of electrochemical approaches to the valorization of abundant natural products into high value medications and metabolites is of pharmaceutical interest. In this study, we explored the electrosynthetic behavior of the abundant legal psychoactive, caffeine, a representative member of the purine alkaloid class. Initial screening of the cyclic voltammetric behavior of eleven exemplar purine alkaloids revealed a structure electroactivity relationship (SeAR) for determining the initial oxidation site of caffeine. Optimization of the current controlled electrochemical (CCE) reaction enabled the dialing-in/out of differential oxidative metabolic products using both undivided and divided cells. Sequential desmethylation around the purine ring was observed both by isolation and comparison to authentic metabolite reference standards via HPLC measurements. Amide, imide, and a novel N-methyl heteroaryl oxidation mechanism were observed. Tractable quantities of the high-value medication, theophylline, and the dietary supplement, paraxanthine, were isolated in 17 % and 8 % b.r.s.m. This approach offers a marked improvement compared to the best-in-class techniques (chemical 0.8 % and enzymatic 0.97 % yields) and may have potential in other natural product and drug discovery settings to prepare valuable metabolites.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 24","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400439","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of MoS₂/Graphene Hetero-Film Photocatalyst and Li-Oxygen Battery Application

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-13 DOI: 10.1002/celc.202400577

Ali Can Çelt, Meltem Çayirli, Reşat Can Özden, Ersu Lökçü, Mustafa Anik

引用次数: 0

Cover Feature: Cost-Effective Solutions for Lithium-Ion Battery Manufacturing: Comparative Analysis of Olefine and Rubber-Based Alternative Binders for High-Energy Ni-Rich NCM Cathodes (ChemElectroChem 21/2024) 封面专题：锂离子电池制造的成本效益解决方案：用于高能量富镍 NCM 阴极的烯烃基和橡胶基替代粘合剂的比较分析（ChemElectroChem 21/2024）

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-07 DOI: 10.1002/celc.202482102

Susan Montes, Alexander Beutl, Andrea Paolella, Marcus Jahn, Artur Tron

引用次数: 0

Phosphorus Doped MoO2 Enhanced Pt Catalyst for Methanol Oxidation

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-07 DOI: 10.1002/celc.202400505

Yuanbo Li, Meng Li, Mamutjan Tursun, Prof. Abdukader Abdukayum, Prof. Ligang Feng

{"title":"Phosphorus Doped MoO2 Enhanced Pt Catalyst for Methanol Oxidation","authors":"Yuanbo Li, Meng Li, Mamutjan Tursun, Prof. Abdukader Abdukayum, Prof. Ligang Feng","doi":"10.1002/celc.202400505","DOIUrl":"https://doi.org/10.1002/celc.202400505","url":null,"abstract":"The sluggish kinetics of methanol oxidation reaction (MOR) required high-performing catalysts in the development of direct methanol fuel cells. Herein, a phosphorus-doped MoO2 nanorods-supported Pt catalyst was proposed which exhibited remarkably enhanced catalytic performance toward MOR in comparison with Pt/MoO2 and commercial Pt/C. Specifically, the Pt/MoO2-P possessed the highest peak current density of 62.63 mA cm−2, about 1.38 and 2.21 times higher than that of Pt/MoO2 (45.24 mA cm−2) and Pt/C (28.40 mA cm−2), respectively. Meanwhile, the Pt/MoO2-P possessed high intrinsic activity expressed by specific activity and mass activity, and largely improved catalytic kinetics. Moreover, the chronoamperometry and CO-stripping testing successfully revealed the superior stability and CO-poisoning resistance of Pt/MoO2-P, rendering Pt/MoO2-P a promising catalyst for MOR. The theoretical calculation revealed the electron redistribution and strong metal-support interaction among Pt/MoO2-P catalysts. The greatly enhanced catalytic performance could be attributed to the heteroatom doping engineering, greatly enhancing the conductivity, and inducing electron redistribution, thereby leading to the strong metal-support interaction and high CO-anti poisoning ability.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 24","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400505","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Core-Shell Amorphous FePO4 as Cathode Material for Lithium-Ion and Sodium-Ion Batteries 核壳非晶FePO4作为锂离子和钠离子电池正极材料

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-11-06 DOI: 10.1002/celc.202400484

Peng Tang, John Prochest Kachenje, Xiaoping Qin, Huihui Li, Xiangdong Zeng, Haiyang Tian, Wei Cao, Ying Zhou, Di Heng, Shishi Yuan, Xun Jia, Xiaolong Zhang, Xiaoyu Zhao

{"title":"Core-Shell Amorphous FePO4 as Cathode Material for Lithium-Ion and Sodium-Ion Batteries","authors":"Peng Tang, John Prochest Kachenje, Xiaoping Qin, Huihui Li, Xiangdong Zeng, Haiyang Tian, Wei Cao, Ying Zhou, Di Heng, Shishi Yuan, Xun Jia, Xiaolong Zhang, Xiaoyu Zhao","doi":"10.1002/celc.202400484","DOIUrl":"https://doi.org/10.1002/celc.202400484","url":null,"abstract":"Amorphous FePO4 (AFP) is a promising cathode material for lithium-ion and sodium-ion batteries (LIBs & SIBs) due to its stability, high theoretical capacity, and cost-effective processing. However, challenges such as low electronic conductivity and volumetric changes seriously hinder its practical application. To overcome these hurdles, core-shell structure synthesis emerges as a useful solution. In this work, we for the first time made this comprehensive review on the progresses of core-shell amorphous FePO4 (CS-AFP). This review summarizes 1) various synthesis methods such as template method, microemulsion method, and other methods, 2) characterization techniques, and 3) their involvement in improving electrochemical performance in LIBs and SIBs. In terms of further understanding the underlying mechanisms of advancing electrochemical performance of CS-AFP, the future perspective on two main aspects were insighted: (i) in situ characterization and (ii) novel designs of materials and structure for CS-AFP.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 23","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400484","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142762335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PVDF and PEO Catholytes in Solid-State Cathodes Made by Conventional Slurry Casting 传统浆料浇铸法制造的固态阴极中的 PVDF 和 PEO 阴极

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-30 DOI: 10.1002/celc.202400472

Benjamin R. Howell, Joshua W. Gallaway

{"title":"PVDF and PEO Catholytes in Solid-State Cathodes Made by Conventional Slurry Casting","authors":"Benjamin R. Howell, Joshua W. Gallaway","doi":"10.1002/celc.202400472","DOIUrl":"https://doi.org/10.1002/celc.202400472","url":null,"abstract":"All-solid-state Li batteries are desired for better safety and energy density than Li-ion batteries. However, the lack of a penetrating liquid electrolyte requires a much different approach to the design of cathodes. The solid catholyte must enable good Li+ conduction, form good interfaces with active material particles, and have the strength to bind the cathode together during repeated volume changes. Catholyte formulation is often simply adapted from Li-ion design principles, adding a Li salt to the PVDF binder. Here we show that such a PVDF binder at 10 wt % loading is a starved catholyte condition that compromises cell performance. By substituting a 70 : 30 blend of PVDF:PEO, performance is improved while maintaining nearly the same areal loading of LFP active material. Increasing the catholyte fraction to 16 % can also improve performance, but in this case the benefit of including PEO is lessened, with PVDF alone being an adequate catholyte. EIS analysis shows that PEO helps to form charge transfer interfaces at 10 % catholyte, but that its inclusion can degrade interfaces when there is ample catholyte at 16 %. It is also shown that catholyte agglomeration can impede bulk Li conduction, indicating that microstructural factors are of critical importance.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 22","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400472","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ex Situ Electro-Organic Synthesis – A Method for Unrestricted Reaction Control and New Options for Paired Electrolysis 原位电有机合成--不受限制的反应控制方法和配对电解的新选择

IF 3.5 4区化学

ChemElectroChem Pub Date : 2024-10-30 DOI: 10.1002/celc.202400489

Helena Pletsch, Yang Lyu, Dominik P. Halter

{"title":"Ex Situ Electro-Organic Synthesis – A Method for Unrestricted Reaction Control and New Options for Paired Electrolysis","authors":"Helena Pletsch, Yang Lyu, Dominik P. Halter","doi":"10.1002/celc.202400489","DOIUrl":"https://doi.org/10.1002/celc.202400489","url":null,"abstract":"Classic in situ electro-organic synthesis with substrates in an electrolyzer must compromise process conditions to balance electro- and thermochemical steps at both electrodes. This often restricts efficiency and product selectivity, since requirements may deviate for electrochemical (catalyst activation) and chemical (organic synthesis) steps, as well as for paired anode- and cathode reactions. Breaking this barrier, we report ex situ electro-organic synthesis as a versatile method that enables unique product selectivity and unusual product pairs. We exemplify the concept for pairing H2 evolution (HER) with anodic alcohol oxidation. The two-step method accomplishes this by separating cathode reactions from organic substrate oxidation, and anodic electrocatalyst activation from chemical conversion of organic substrates in time and space. First, the electro-oxidation of Ni(OH)2 anodes to NiOOH is paired with H2 production by alkaline water electrolysis. Then, “charged” NiOOH electrodes are removed from the electrolyzer and used in external vessels to oxidize model substrate benzyl alcohol under regeneration of Ni(OH)2. Free choice of reaction media outside the electrolyzer allows to selectively obtain benzoic acid (in water) or benzaldehyde (in n-hexane), whereas classic in situ electrosynthesis only produces the acid together with H2. Perspectively, the method enables electrosynthesis of previously inaccessible products paired to H2 generation.","PeriodicalId":142,"journal":{"name":"ChemElectroChem","volume":"11 22","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/celc.202400489","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674383","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0