IF 6.6 2区化学

ChemSusChem Pub Date : 2025-10-23 DOI: 10.1002/cssc.202501826

Ruiping Chen, Yifan Jia, Xiao Feng, Yingxue Yu, Chuxin Wu, Lunhui Guan

{"title":"KOH-Induced Surface Defluorination and Hydroxylation of CFX for Ultrahigh Power Density Primary Batteries.","authors":"Ruiping Chen, Yifan Jia, Xiao Feng, Yingxue Yu, Chuxin Wu, Lunhui Guan","doi":"10.1002/cssc.202501826","DOIUrl":"https://doi.org/10.1002/cssc.202501826","url":null,"abstract":"Low power capability remains one of the primary challenges for lithium/fluorinated carbon (Li/CFx) batteries. Surface modification represents a typical strategy for enhancing the intrinsic conductivity and reaction kinetics of CFx. However, most existing surface modification methods suffer from complex procedures and nonuniform products. To address this problem, this study reports a one-step liquid-phase reaction method, KOH as a defluorination agent, to achieve controlled surface defluorination and -OH grafting on CFx. The defluorination process reduces edge-inert CF2/CF3 groups, exposes CC bonds, and forms an ultrathin, graphene sheet-like conductive coating (≈1 nm thick) on the CFx surfaces, enhancing lithium-ion and electron transport kinetics during the early discharge stage. Simultaneously, the grafted -OH groups weaken the surrounding CF bonds via hydrogen bonding, increasing the proportion of semi-ionic CF bonds and boosting the electrochemical activity of CFx. Their synergistic effect significantly improves the reaction kinetics of CFx during discharge. Relative to pristine CFx cathodes, batteries using KOH-induced CFx cathodes achieve a 70C discharge capability, attain 98.42 kW kg-1 power density, and exhibit near-doubled (95%) improvement in energy density at 50C. This work provides a practical new avenue for large-scale preparation of high-power fluorinated carbon cathodes, facilitating their industrial application.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202501826"},"PeriodicalIF":6.6,"publicationDate":"2025-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145342281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cover Feature: Efficient Recovery and Fast Hydrolysis of Polyethylene Terephthalate by Dihydrolevoglucosenone (Cyrene) (ChemSusChem 20/2025) 封面特色：二氢左旋葡萄糖酮（昔rene）高效回收和快速水解聚对苯二甲酸乙二醇酯（ChemSusChem 20/2025）

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-10-23 DOI: 10.1002/cssc.70230

Lulu Deng, Hailong He, Zhonghao Chen, Yao Meng, Lei Wang

引用次数: 0

Front Cover: Microfluidic-Assisted Evolution of a Robust NAD+-Dependent Enzyme with Improved Isobutanol Tolerance at Elevated Temperatures (ChemSusChem 20/2025) 封面：微流体辅助进化稳健的NAD+依赖酶，在高温下提高异丁醇耐受性（ChemSusChem 20/2025）

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-10-23 DOI: 10.1002/cssc.70229

Mariko Teshima, Robert Genth, Tenuun Bayaraa, Manuel Döring, Barbara Beer, Gerhard Schenk, Volker Sieber

{"title":"Front Cover: Microfluidic-Assisted Evolution of a Robust NAD+-Dependent Enzyme with Improved Isobutanol Tolerance at Elevated Temperatures (ChemSusChem 20/2025)","authors":"Mariko Teshima, Robert Genth, Tenuun Bayaraa, Manuel Döring, Barbara Beer, Gerhard Schenk, Volker Sieber","doi":"10.1002/cssc.70229","DOIUrl":"https://doi.org/10.1002/cssc.70229","url":null,"abstract":"The Front Cover shows a microfluidic chip that was used in an enzyme engineering approach utilizing microdroplet-based UHTS to optimize an aldehyde dehydrogenase towards higher temperature stability and solvent tolerance. The optimized enzyme was then applied as part of a multi-enzyme cascade as indicated by the circle of enzyme structures above the chip. The ultimate goal is a continuous process for the conversion of glucose into isobutanol in a two-phase system using these enzymes and based on the formation of an isobutanol phase at sufficiently high concentration and with continuous removal of the organic phase, as shown by the reactor in the background. More information can be found in the Research Article by V. Sieber and co-workers (DOI: 10.1002/cssc.202501120).\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture>\u0000 </div>\u0000 </figure>","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":"18 20","pages":""},"PeriodicalIF":6.6,"publicationDate":"2025-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/cssc.70229","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145341902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Pd/C-Catalyzed Efficient and Selective Synthesis of Glycolic Acid from Ethylene Glycol. Pd/ c催化乙二醇高效选择性合成乙醇酸。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-10-23 DOI: 10.1002/cssc.202501839

Alban Schmoll, Yong-Wang Huo, Sufang Shao, Xiao-Feng Wu

引用次数: 0

A New Low-Rate Stable Hydrogel Cathode for Aqueous Zn-ion Batteries. 一种新型低倍率稳定的水凝胶锌离子电池阴极。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-10-23 DOI: 10.1002/cssc.202501942

Roya Rajabi, Shichen Sun, Jamil Khan, Morgan Stefik, Kevin Huang

{"title":"A New Low-Rate Stable Hydrogel Cathode for Aqueous Zn-ion Batteries.","authors":"Roya Rajabi, Shichen Sun, Jamil Khan, Morgan Stefik, Kevin Huang","doi":"10.1002/cssc.202501942","DOIUrl":"https://doi.org/10.1002/cssc.202501942","url":null,"abstract":"Aqueous Zn-ion batteries (ZIBs) are attractive candidates for large-scale energy storage owing to the abundance, low cost, and intrinsic safety of Zn metal. However, their practical application is hindered by poor cycle stability, especially at low current densities, due to cathode dissolution and limited electrochemically active sites (EAS). Herein, a hydrogel-based cathode comprising ammonium vanadate, carbon black, and a Zn-ion-conducting carboxymethyl chitosan-acrylamide hydrogel matrix doped with Zn(ClO4)2 is reported. This design establishes a continuous Zn-ion-conducting network, thereby maximizing EAS density throughout the electrode volume. The ZIB with the hydrogel cathode exhibits outstanding cycling stability, with 77% capacity retention after 2000 cycles at 1 A g-1 and 75% retention after 1400 cycles at 0.5 A g-1, far surpassing conventional polyvinylidene fluoride-based cathodes. In addition to retaining high EAS density, the hydrogel matrix also suppresses active material dissolution. These results demonstrate a new strategy for stabilizing ZIB cathodes and advancing long-duration energy storage.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202501942"},"PeriodicalIF":6.6,"publicationDate":"2025-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145342301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Designing Better Organic Electrodes for Potassium Ion Batteries. 设计更好的钾离子电池有机电极。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-10-23 DOI: 10.1002/cssc.202501737

Yanyao Hu, Ling Fan, Bingan Lu, Shuang-Feng Yin

引用次数: 0

Ball-Milling Assisted Iron-Catalyzed Difluoromethylation Toward the Synthesis of Valuable Oxindoles. 球磨辅助铁催化二氟甲基化合成有价吲哚。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-10-22 DOI: 10.1002/cssc.202501319

Vitalii Solomin, Nicolas Delcroix, Marie Caldiero, Philippe Jubault, Thomas Castanheiro

{"title":"Ball-Milling Assisted Iron-Catalyzed Difluoromethylation Toward the Synthesis of Valuable Oxindoles.","authors":"Vitalii Solomin, Nicolas Delcroix, Marie Caldiero, Philippe Jubault, Thomas Castanheiro","doi":"10.1002/cssc.202501319","DOIUrl":"https://doi.org/10.1002/cssc.202501319","url":null,"abstract":"SEM analyses revealed that the ball-milling and piezoelectric-mediated radical difluoromethylation might be, in fact, catalyzed by iron contamination of BaTiO3 due to abrasion of the stainless steel milling assembly (jar and balls). A ball-milling mediated, Fe-catalyzed radical difluoromethylation is subsequently developed for the synthesis of valuable difluoromethylated oxindoles. Under a mechanochemical compression, the use of readily accessible PhI(OCOCF2H)2 in the presence of 25 mol% of Fe(OAc)2 enabled the unprecedented solid-state formation of the CF2H radical, prone to add onto an acrylamide substrate to initiate a radical cascade process affording the desired difluormethylated oxindoles. The practical protocol demonstrates broad substrate scope and functional group tolerance, including N-substitution and substitution on the CC double bond or the aromatic ring of the acrylamide substrates. Furthermore, the protocol is extended to the introduction of CF2Me, CF2Bn, and CF2Ph motifs, delivering the corresponding products in moderate to good yields. Radical trapping experiments supported a radical-based mechanism, while control experiments confirmed the essential role of both the Fe-catalyst and mechanochemical compression.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202501319"},"PeriodicalIF":6.6,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145342252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Lignin, Humins, and Biomass-Derived Acids on Kinetics of Catalytic Hydroxymethylfurfural Production during Saccharide Dehydration Reactions. 木质素、人源素和生物质衍生酸对糖脱水反应中催化羟甲基糠醛生成动力学的影响。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-10-22 DOI: 10.1002/cssc.202501282

Ana Jakob, Blaž Likozar, Miha Grilc

{"title":"Effect of Lignin, Humins, and Biomass-Derived Acids on Kinetics of Catalytic Hydroxymethylfurfural Production during Saccharide Dehydration Reactions.","authors":"Ana Jakob, Blaž Likozar, Miha Grilc","doi":"10.1002/cssc.202501282","DOIUrl":"https://doi.org/10.1002/cssc.202501282","url":null,"abstract":"Hemicelluloses, the most prevalent components of waste lignocellulosic biomass, can be efficiently converted through the hydrolysis of polysaccharides and subsequent dehydration of individual sugar units into value-added furanics. Over the past two decades, the hydroxymethylfurfural (HMF) biobased compound has demonstrated immense potential for its utilization capacity. However, the low process efficiency of the HMF production on an industrial scale has been restricting its valorization. Experimental kinetic studies are thus useful to elucidate underlying reaction mechanisms, enabling process optimization, and assessing biorefinery techno-economic operation. This review aims to present, analyze, and examine the validated characteristic activity of homogeneously, and heterogeneously catalyzed sugar dehydration, namely glucose, fructose, and xylose, as well as real wood and agricultural streams. Kinetic studies demonstrated the trend of strong temperature sensitivity for both HMF and humin formation and feedstock-dependent selectivity. Systematic testing with complex mixtures, controlled material samples, and model chemical intermediates contributes to unraveling the impact of feedstock complexity on HMF synthesis by identifying unwanted interactions and regulating the influence of impurities. Therefore, the principles of these elusive pathways are evaluated, discussing the possibilities of limiting undesired side products. Comparing the relevance of HMF, an overview is concluded with the acknowledged challenges of feedstock, impacting HMF selectivity.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202501282"},"PeriodicalIF":6.6,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145342287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reductive-Oxidative Tandem Catalysis for Lignin Depolymerization to Benzoquinones and Benzaldehydes. 木质素解聚制备苯醌和苯甲醛的还原-氧化串联催化。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-10-21 DOI: 10.1002/cssc.202501299

Jonas Mortier, Tibo De Saegher, Christian V Stevens, An Verberckmoes, Jeroen Lauwaert, Thomas S A Heugebaert

引用次数: 0

Performance of High Temperature Polymer Electrolyte Membrane Fuel Cells as a Function of Polybenzimidazole Membrane Modification. 高温聚合物电解质膜燃料电池性能对聚苯并咪唑膜改性的影响。

IF 6.6 2区化学

ChemSusChem Pub Date : 2025-10-21 DOI: 10.1002/cssc.202501575

Julia Müller-Hülstede, Dana Schonvogel, Julian Büsselmann, Jörg Belack, Jurica Vidakovic, Md Raziun B Mamtaz, Quentin Meyer, Chuan Zhao, Peter Wagner

{"title":"Performance of High Temperature Polymer Electrolyte Membrane Fuel Cells as a Function of Polybenzimidazole Membrane Modification.","authors":"Julia Müller-Hülstede, Dana Schonvogel, Julian Büsselmann, Jörg Belack, Jurica Vidakovic, Md Raziun B Mamtaz, Quentin Meyer, Chuan Zhao, Peter Wagner","doi":"10.1002/cssc.202501575","DOIUrl":"https://doi.org/10.1002/cssc.202501575","url":null,"abstract":"Polymer electrolyte membranes (PEM) of high-temperature PEM fuel cells (HT-PEMFC) are commonly based on phosphoric acid-doped polybenzimidazole (PBI). However, these membranes suffer from acid leaching and limited mechanical stability. In this study, five different PBI membrane modifications, including inorganic fillers (SiC, Si3N4, SiO2), crosslinking, and high-solid content, are explored to increase the solid content of the membranes (up to 18 wt%), which could potentially increase mechanical stability. All modifications are based on the industrial fabrication process of the commercial Celtec-P membrane to enable direct comparison in HT-PEMFC. HT-PEMFC testing reveal comparable performance to the Celtec standard when incorporating SiC particles with lower membrane resistance. Lowest performance is found for crosslinked and high-solid-based membrane electrode assembly (MEA), which is traced back to acid leaching and increased proton transport resistances. The evaluation of performance under operation with reformate reveal no beneficial effect of the membrane modification. This study helps to implement novel HT-PEM candidates in the industrial fabrication process and provides direct comparison to the already commercialized Celtec technology regarding MEA performances and stabilities.","PeriodicalId":149,"journal":{"name":"ChemSusChem","volume":" ","pages":"e202501575"},"PeriodicalIF":6.6,"publicationDate":"2025-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145342319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

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