Carbon Energy最新文献

{"title":"Single Atoms Induced Electron Transfer and Spin Polarization for High-Performance Asymmetric Supercapacitors","authors":"Qingjie Lu, Tong Zhou, Mingpeng Chen, Yumin Zhang, Huachuan Sun, Xiaoqu Wang, Baoye Zi, Bo Li, Jin Zhang, Zhongqi Zhu, Qingju Liu","doi":"10.1002/cey2.70263","DOIUrl":"https://doi.org/10.1002/cey2.70263","url":null,"abstract":"<p>Features of low cost and high theoretical capacity render transition metal oxides (TMOs) as promising candidates for electrode material of supercapacitors. However, they intrinsically possess drawbacks of low conductivity, high charge transfer resistance, and slow diffusion kinetics. Herein, non-precious metal single atoms (SAs) were introduced into TMOs to regulate the electronic structure for supercapacitors. For the obtained example CuSAs–Co<sub>3</sub>O<sub>4</sub>, the results of fine characterizations, quasi-in-situ techniques, DFT calculations, and magnetic property analyses reveal that the introduction of Cu SAs induces a dually enhanced optimization in electronic structure. On the one hand, electron transfer from Cu to the main reaction sites (Co sites) for increasing the quantity of electrons that can participate in electrochemical reactions. On the other hand, induced spin polarization can facilitate the occupation of Co<sup>3+</sup>(3d<sup>6</sup>) varies from (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 \u0000 <mrow>\u0000 <msubsup>\u0000 <mi>t</mi>\u0000 \u0000 <mrow>\u0000 <mn>2</mn>\u0000 \u0000 <mi>g</mi>\u0000 </mrow>\u0000 \u0000 <mn>6</mn>\u0000 </msubsup>\u0000 \u0000 <msubsup>\u0000 <mi>e</mi>\u0000 \u0000 <mi>g</mi>\u0000 \u0000 <mn>0</mn>\u0000 </msubsup>\u0000 </mrow>\u0000 </mrow>\u0000 </semantics></math>) to (<span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 \u0000 <mrow>\u0000 <msubsup>\u0000 <mi>t</mi>\u0000 \u0000 <mrow>\u0000 <mn>2</mn>\u0000 \u0000 <mi>g</mi>\u0000 </mrow>\u0000 \u0000 <mn>5</mn>\u0000 </msubsup>\u0000 \u0000 <msubsup>\u0000 <mi>e</mi>\u0000 \u0000 <mi>g</mi>\u0000 \u0000 <mn>1</mn>\u0000 </msubsup>\u0000 </mrow>\u0000 </mrow>\u0000 </semantics></math>), representing higher activity. Thus, fast electron conduction, enhanced capacitive reactions, and accelerated ion diffusion can be achieved. Eventually, the capacity of CuSAs–Co<sub>3</sub>O<sub>4</sub> can reach 960.0 C g<sup>−1</sup> in 1 A g<sup>−1</sup>, and the maximum energy den","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"8 10","pages":""},"PeriodicalIF":21.4,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.70263","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149311037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fluorine-Induced Selective Doping and Phase Transition Effect for FeNi Layered Double Hydroxides Towards Enhanced Oxygen Evolution Electrocatalysis","authors":"Fulin Yang,&nbsp;Jiawei Wu,&nbsp;Luhong Fu,&nbsp;Shuli Wang,&nbsp;Ligang Feng","doi":"10.1002/cey2.70297","DOIUrl":"https://doi.org/10.1002/cey2.70297","url":null,"abstract":"<p>NiFe-based layered double hydroxides (LDHs), as the most efficient oxygen evolution reaction (OER) catalysts in alkaline media, still face challenges related to limited active-site exposure and insufficient active-phase transition kinetics. In this work, we present a systematic investigation of F-doped FeNi LDHs and reveal the F⁻ induced partial phase transition from <i>tetragonal</i> to <i>hexagonal</i> FeNi LDH, which greatly increases its performance for OER. We find that F ions tend to be incorporated into the <i>hexagonal</i> lattice rather than the <i>tetragonal</i> lattice due to the different formation energies of the F-doped structures. As a result, the optimized sample with <i>tetragonal</i>/<i>hexagonal</i> heterointerfaces exhibits exceptional activity and stability, with an overpotential of only 222 mV to afford 10 mA cm⁻², surpassing most reported Fe/Ni-based catalysts. Advanced characterizations and theoretical analysis confirm that the promoted performance can be mainly attributed to interfacial charge redistribution at phase interfaces that significantly reduces the energy barrier for OER, rather than F-doping-induced electronic effect directly. This doping-induced phase-transition engineering opens a new avenue for developing advanced heterostructured materials for electrocatalytic energy conversion.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"8 10","pages":""},"PeriodicalIF":21.4,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.70297","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149311743","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient and Durable Sulfion Oxidation Coupled With Hydrogen Production via Cu@Cu2S Heterostructured Nanowires","authors":"Hongling Zhang,&nbsp;Jiangna Guo,&nbsp;Mengqi Yang,&nbsp;Xingyu Li,&nbsp;Ruixue Weng,&nbsp;Guanyu Liu,&nbsp;Sen Luo,&nbsp;Xiaoyu Dong,&nbsp;Chaowei Ma,&nbsp;Xun Cui,&nbsp;Peng Xiao,&nbsp;Wenjing Yang,&nbsp;Yihuang Chen,&nbsp;Yunhuai Zhang,&nbsp;Ming Zhou","doi":"10.1002/cey2.70249","DOIUrl":"https://doi.org/10.1002/cey2.70249","url":null,"abstract":"<p>Electrocatalytic sulfur oxidation-assisted hydrogen evolution is a promising method that can efficiently degrade sulfur ions in recovered wastewater while cost-effectively producing hydrogen. However, it still remains a great challenge to develop efficient and stable electrocatalysts with a well-defined heterointerface and high sulfur tolerance. Herein, we present a facile and liquid-phase approach to synthesis Cu@Cu₂S core-shell heterostructure nanowires derived from copper nanowires at room temperature for robust sulfide oxidation reaction (SOR)-assisted H₂ generation. The Cu@Cu₂S core-shell heterostructure nanowires exhibit superior SOR activity with an ultralow potential of 0.3 V (vs. reversible hydrogen electrode [RHE]) at a current density of 100 mA cm⁻². More importantly, the assembled hybrid system with Cu@Cu₂S displays remarkable durability over 216 h with negligible activity decay. Combined with the experimental characterizations and theoretical calculations, it was demonstrated that Cu@Cu₂S core-shell heterostructure nanowires possessed reduced transition energy barriers in the rate-determining *S₃ to *S₄ oxidation step and a higher integrated density of states, significantly optimizing adsorption/desorption energy of sulfur intermediates, thereby greatly boosting the catalytic activity and alleviating the sulfur poisoning. Our findings provide a new strategy to develop metal/sulfide core-shell heterostructure electrocatalysts with substantially enhanced activity and stability.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"8 10","pages":""},"PeriodicalIF":21.4,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.70249","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149312245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Amorphous Protective Layers to Reshape Inorganic-Rich Interphases for High-Voltage Sodium-Ion Batteries","authors":"Chang Guo,&nbsp;Xin-Yu Fan,&nbsp;Mengting Liu,&nbsp;Shao-Wen Xu,&nbsp;Guang-Xu Wei,&nbsp;Zhen-Bang Chen,&nbsp;Zhao-Kun Guan,&nbsp;Yao Xiao,&nbsp;Hanshen Xin,&nbsp;Peng-Fei Wang","doi":"10.1002/cey2.70037","DOIUrl":"10.1002/cey2.70037","url":null,"abstract":"<p>Although sodium-ion batteries (SIBs) are competitive for large-scale electrical energy storage, the high-voltage instability of the cathode–electrolyte interphase (CEI) formed on the cathode surface results in the dissolution of the transition metal (TM) and the sluggish interfacial electrochemical reaction kinetics, which deteriorates both the energy density and the cycle life of the SIBs. Herein, we propose a surface modification strategy to reconstruct the interphase of P2-type Na_0.7Li_0.03Mg_0.03Ni_0.27Mn_0.6Ti_0.07O₂ (LM′NMT) cathode with amorphous SiO₂ (denote as SiO₂@LM′NMT) by a wet chemical method. This approach facilitates the reconfiguration of a more stable, inorganic-rich CEI due to enhanced adsorption catalysis of an amorphous coating with ample defects, resulting in improved Na⁺ transport kinetics and inhibition of subsequent side reactions, TM dissolution, and structural degradation. As a result, the modified SiO₂@LM′NMT-5 cathode exhibits an impressive capacity of 131.6 mAh g⁻¹ at 0.1 C and maintains exceptional cycling stability, with 91.7% capacity retention after 150 cycles at 1 C within the voltage window of 2.2 to 4.4 V. This study grasps insights into optimizing the CEI to push forward practical application of SIBs under high voltages.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"8 10","pages":""},"PeriodicalIF":21.4,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/cey2.70037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147896019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modulating the Surface Electronic Structure of Pt With Co2P for Effective Methanol Oxidation Reaction and Hydrogen Evolution Reaction Under Acidic and Alkaline Conditions","authors":"Nana Zheng,&nbsp;Zhenjiang Lu,&nbsp;Yong Guo,&nbsp;Jing Xie,&nbsp;Jindou Hu,&nbsp;Yali Cao","doi":"10.1002/cey2.70282","DOIUrl":"https://doi.org/10.1002/cey2.70282","url":null,"abstract":"<p>To develop cost-effective and high-performance water splitting electrocatalysts, precise modulation of the electronic structure of platinum (Pt) active sites is crucial. Herein, a Pt@Co₂P/Co/CNF heterojunction catalyst is fabricated via electrospinning, phosphorization, and in situ replacement. DFT calculations confirm that the heterojunction interface induces charge redistribution at Pt sites, which, together with Co₂P-mediated electronic regulation of Pt for balanced intermediate adsorption and accelerated water dissociation and the enhanced structural stability and inhibited Pt aggregation from the Co/CNF framework, synergistically lowers the reaction energy barrier. Consequently, the catalyst exhibits superior bifunctional performance with low hydrogen evolution reaction (HER) overpotentials of 16 mV (alkaline) and 32 mV (acidic) at 10 mA cm⁻², high methanol oxidation reaction (MOR) mass activities of 2082 and 2326 mA mg_Pt⁻¹ in corresponding media, and outstanding 100 h stability. This work provides a feasible strategy for designing acid-alkali compatible bifunctional electrocatalysts.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"8 10","pages":""},"PeriodicalIF":21.4,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.70282","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149311038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High Entropy–Driven Performance Enhancement in Perovskite Oxides for Energy Conversion and Storage Systems","authors":"Obeylaw Moyo,&nbsp;Jiaqiao Yang,&nbsp;Mingzhuang Liang,&nbsp;Hyunseung Kim,&nbsp;Wei Wang,&nbsp;Yong Beom Kim,&nbsp;Junxiong Zhang,&nbsp;WooChul Jung,&nbsp;Hainan Sun","doi":"10.1002/cey2.70262","DOIUrl":"https://doi.org/10.1002/cey2.70262","url":null,"abstract":"<p>High-entropy perovskite oxides (HEPOs) are a new frontier in energy materials, where multi-cation configurational disorder and entropy stabilization enable unmatched structural and functional tuning. This review highlights recent progress in synthesis methods, structural design principles, and defect engineering, demonstrating how configurational, vibrational, and electronic entropy interact to enhance phase stability, ionic and electronic transport, and catalytic activity. Key applications are explored, including catalytic processes such as the oxygen evolution reaction (OER), the oxygen reduction reaction (ORR), and the carbon dioxide reduction reaction (CO₂RR), as well as electrochemical energy storage in Li/Na-ion batteries, supercapacitors, and metal–air systems. This review also emphasizes how emerging in situ and operando characterization, combined with computational modeling, has advanced understanding of the mechanisms underlying dynamic structural, redox, and defect evolution in HEPOs, creating a framework linking synthesis strategies to functional performance. Overall, these advances position HEPOs as a flexible and scalable platform for next-generation energy conversion and storage technologies.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"8 10","pages":""},"PeriodicalIF":21.4,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.70262","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149311039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hierarchically Engineered Transition Metal Electrode for Direct Lithium Extraction From Brine","authors":"Ankit Kumar Tripathi,&nbsp;Lixue Jiang,&nbsp;Thành Trần-Phú,&nbsp;Denny Gunawan,&nbsp;Yihao Shan,&nbsp;Adhi Satriyatama,&nbsp;Liming Dai,&nbsp;Rose Amal,&nbsp;Rahman Daiyan","doi":"10.1002/cey2.70270","DOIUrl":"https://doi.org/10.1002/cey2.70270","url":null,"abstract":"<p>The global transition to net-zero has positioned lithium (Li) as a critical mineral for electrification and energy storage. While the electrochemical intercalation/deintercalation (EID) approach from unconventional brine sources offers a promising Li extraction pathway, it is typically challenged by electrode materials that rely on critical minerals such as Mn, Co, and Li, which present stability issues and require prior electrode delithiation. This study investigates the potential of tungsten trioxide (WO₃) nanoparticles synthesized via flame spray pyrolysis (FSP) and further surface modified with reduced graphene oxide (rGO) derived carbon as a novel material for lithium extraction from synthetic brine (Li~1057 ppm), exhibiting intercalation capacity of 3 mmol Li g⁻¹ h⁻¹ with recovery efficiency of 43% in simulated Hombre Muerto brine. X-ray photoelectron spectroscopy (XPS) analysis confirmed W⁶⁺ reduction and Li 1s peaks upon intercalation into WO₃. Through a suite of in-situ and ex-situ X-ray absorption spectroscopy (XAS) measurements, we demonstrate reduction of W⁶⁺ during Li intercalation, followed by reoxidation upon deintercalation. This work establishes carbon modified WO₃ as an efficient material for lithium extraction from aqueous brines while elucidating the underlying intercalation/deintercalation mechanism.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"8 10","pages":""},"PeriodicalIF":21.4,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.70270","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149311041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular-Tailored Ultrathin Hydrophobic Interphases for High-Stable Zinc Metal Anodes","authors":"Jiajin Song,&nbsp;Haoqu Jin,&nbsp;Yirong Zhu,&nbsp;Jiahong Wang,&nbsp;Adrian Fortuin,&nbsp;Keming Zhu,&nbsp;Hui Yang,&nbsp;Denis Kramer,&nbsp;Xue-Feng Yu,&nbsp;Chao Peng","doi":"10.1002/cey2.70264","DOIUrl":"https://doi.org/10.1002/cey2.70264","url":null,"abstract":"<p>The Zn electrode interface is highly susceptible to the uncontrollable growth of Zn dendrites and severe parasitic reactions, which severely limit the practical application of aqueous zinc-ion batteries (AZIBs). Developing stable interfacial layers is therefore crucial for improving the cycling stability of Zn metal anodes. In this work, by systematically comparing the effects of alkyl small molecules with different backbone chain lengths and terminal group distributions on the surface coverage and ordering of hydrophobic interfacial layers, the highly ordered self-assembled monolayers (SAMs) based on 1-fluorooctane (FT) are successfully constructed on the Zn anode. Electrochemical measurements further reveal that these monolayers facilitate the rapid desolvation of [Zn(H₂O)₆]²⁺, guide uniform Zn deposition, and effectively suppress interfacial side reactions. As a consequence, a dendrite-free and highly reversible FT–Zn anode is achieved, delivering an ultralong lifespan (exceeding 3200 h at 1.0 mA cm⁻²), a high Coulombic efficiency (99.71% after 1600 cycles), and excellent full-cell capacity retention (83.4% after 1000 cycles). Through precise molecular structure regulation, this work demonstrates the controllable construction of an ultrathin hydrophobic self-assembled interfacial layer, expanding a new strategy for developing highly reversible and stable Zn metal anodes and offering significant implications for accelerating the practical application and commercialization of AZIBs in large-scale energy storage systems.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"8 10","pages":""},"PeriodicalIF":21.4,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.70264","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149311285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Harmonized Multifaceted Zinc Deposition Enabled by Amine-Functionalized Carbon Quantum Dots for Dendrite-Free Zinc Anodes Under Ultrahigh Current Densities","authors":"Yihui Song,&nbsp;Huan Liang,&nbsp;Junling Guo,&nbsp;Zhanhong Peng,&nbsp;Linxuan Yang,&nbsp;Yitao Yang,&nbsp;Fan Yang,&nbsp;Ting Zhu,&nbsp;Weibin Zhang,&nbsp;Qianjin Wang,&nbsp;Hongen Wang,&nbsp;Chen Qing,&nbsp;Siyu Lu","doi":"10.1002/cey2.70284","DOIUrl":"https://doi.org/10.1002/cey2.70284","url":null,"abstract":"<p>Dendrite formation continues to inhibit the development of aqueous zinc-ion (Zn²⁺) batteries (AZIBs). A common strategy for suppressing Zn dendritic growth is to promote Zn²⁺ selective deposition along the (002) plane, which features a smooth and uniform atomic arrangement. However, this strategy is most likely to break down at high current densities (&gt; 40 mA cm⁻²) because Zn²⁺ elsewhere cannot rapidly diffuse to the (002) plane for deposition. The resulting excessive electron accumulation then boosts the electronegativity of other planes, readily disrupting the engineered (002)-preferred deposition. Herein, to overcome this issue, amine-functionalized carbon quantum dots (NH₂-CDs) have been developed as an electrolyte additive. Surface-rich NH₂ groups on water-soluble CDs provide stronger Zn²⁺ affinity than H₂O, forming uniform Zn²⁺–NH₂-CD complexes, which exhibit similar adsorption energies on the three major planes of Zn foil. This functionality, for the first time, realizes multifaceted Zn²⁺ deposition along the native crystal planes of Zn foil, suppressing dendrites even at ultrahigh current densities. Consequently, Zn||Zn cells with NH₂-CDs as an electrolyte additive achieve a cumulative capacity of 5000 mAh cm^–2 at 100 mA cm^–2. Our work pioneers a novel strategy for dendrite-free Zn anodes under ultrahigh current densities, highly advancing the development of practical AZIBs.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"8 10","pages":""},"PeriodicalIF":21.4,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.70284","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149311610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fe–Mn Heterojunction Modulated Electronic Environment for Enhanced CO2 Capture and In Situ Conversion","authors":"Han Zhang,&nbsp;Ziyan Yang,&nbsp;Xiaohang Huang,&nbsp;Junxian Han,&nbsp;Yujing Zhang,&nbsp;Yuqi Zhang,&nbsp;Fumei Wang,&nbsp;Lina Liu,&nbsp;Zhikun Zhang","doi":"10.1002/cey2.70274","DOIUrl":"https://doi.org/10.1002/cey2.70274","url":null,"abstract":"<p>Calcium looping dry reforming of methane (CaLDRM) on calcium-based dual-functional materials (DFMs, generally using Ni as the active sites) is potential in overcoming the thermodynamically equilibrium constrains of conventional DRM reaction, which enables the in situ capture and direct conversion of CO₂ under relatively mild conditions. However, the inherently unfavorable properties of CaO, including the low oxygen mobility and inert electrical framework results in the inferior activation capacity of CO₂, leading to a high coking tendency and poor stability of calcium-based DFMs. To address these challenges, Fe–Mn heterojunctions are constructed to enable modulation of the electronic environment and oxygen vacancy of the CaO support. In this study, municipal solid waste incineration bottom ash is employed as a thermally stable and low-cost source of Fe and Ca oxides. The optimized DFM delivered remarkable CH₄ and CO₂ conversions of 95.9% and 92.7% (maintaining a constant H₂/CO ratio close to unity) without obvious deactivation over 10 cycles at a relatively low temperature of 675°C. The possible reason is that the built-in electric field at the heterointerface drove the directional electron transfer from Fe to Mn, generating electron-rich Mn sites. Simultaneously, the deficiency of electrons at the Fe sites weakened Fe–O bonds and hence induced the formation of abundant oxygen vacancies. In situ characterizations and theoretical calculations reveal that the electron-rich Mn sites and oxygen vacancies served as electron donors and anchor sites of active O/OH species, respectively, which synergistically facilitated CO₂ adsorption and activation. These results highlight the heterojunction engineering as an effective strategy for developing efficient DFMs for CaL-DRM reaction.</p>","PeriodicalId":33706,"journal":{"name":"Carbon Energy","volume":"8 10","pages":""},"PeriodicalIF":21.4,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/cey2.70274","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149311814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}