Journal of Energy Chemistry最新文献

{"title":"Recent advances in metallic core–shell nanoparticles for electrocatalysis: synthesis, characterization, and applications","authors":"Xiangyun Xiao ,&nbsp;Doufeng Wang ,&nbsp;Osama Younis ,&nbsp;Xiaolong Zhang ,&nbsp;Ahmed F. Al-Hossainy ,&nbsp;Cafer T. Yavuz ,&nbsp;Xinchun Yang ,&nbsp;Hui-Ming Cheng","doi":"10.1016/j.jechem.2025.06.057","DOIUrl":"10.1016/j.jechem.2025.06.057","url":null,"abstract":"<div><div>Metallic core–shell nanoparticles (MCSNs) have attracted significant research interest in electrochemical energy conversion owing to their distinctive microstructures and superior catalytic performances. By rationally designing a metallic core with a specific surface (shell), synergistic interactions between the core and the shell, benefiting from the intrinsic strain, ligand, geometric, and ensemble effects, can endow multi-metallic CSNs with highly enhanced activity, selectivity, and stability in electrocatalytic reactions, compared to their monometallic counterparts. In this review, we outline the key breakthroughs—especially in the past 5 years—of MCSNs, focusing on their precise design/synthesis, intrinsic effects arising from core–shell interactions, state-of-the-art characterization techniques, and exceptional performance in critical electrochemical reactions, including water splitting, oxygen reduction reaction (ORR), CO₂ reduction reaction (CO₂RR), N₂/NO₃⁻ reduction reaction (N₂RR/NO₃RR), and small organic molecule electrooxidations. We further discuss the ongoing challenges and opportunities for MCSNs, particularly in achieving computationally guided design/atomic-precision synthesis, enabling scalable production, and advancing in situ or operando characterization methods. We hope that the present review will inspire chemists working in this field to develop new MCSNs for sustainable energy applications.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 227-245"},"PeriodicalIF":13.1,"publicationDate":"2025-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning the properties of LiNi0.8Mn0.1Co0.1O2 via atomic layer deposition using different synthetic stages","authors":"Alisa R. Bogdanova ,&nbsp;Filipp A. Obrezkov ,&nbsp;Anna A. Kobets ,&nbsp;Xiangze Kong ,&nbsp;Ville Miikkulainen ,&nbsp;Jouko Lahtinen ,&nbsp;Lide Yao ,&nbsp;Hua Jiang ,&nbsp;Tanja Kallio","doi":"10.1016/j.jechem.2025.06.056","DOIUrl":"10.1016/j.jechem.2025.06.056","url":null,"abstract":"<div><div>LiNi_0.8Mn_0.1Co_0.1O₂ (NMC811) is an attractive material for high-energy-density Li-ion batteries in electric vehicles. However, it suffers from rapid capacity fading. Previous studies have shown that tuning the positive electrode material via atomic layer deposition (ALD) can enhance the electrochemical performance of the material. In this article, we introduce a novel coating method using gaseous precursors in an ALD reactor, where an AlO<em>_x</em> layer is deposited directly on the surface of the NMC811 precursor, followed by lithiation. The AlO<em>_x</em> coating is applied to the NMC811 powder substrate by exposing it to gas-phase precursors, using a conventional ALD and simplified ALD (chemical vapor deposition-like) method. It is observed that the novel methods lead to the incorporation of Al as a dopant within the bulk of NMC811, rather than forming a conformal AlO<em>_x</em> coating, after the final lithiation step. The optimized procedures result in positive electrode materials with higher capacity and enhanced cycling stability in both half-cell and full-cell configurations. Doping or coating was shown to mitigate transition metal dissolution, reduce side reactions between the active material and electrolyte, and improve structural stability.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 270-281"},"PeriodicalIF":13.1,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reconstructing active sites in Ni-Co double hydroxides to enhance electrocatalytic efficiency for nitrate reduction to ammonia","authors":"Jian Zhou ,&nbsp;Yunteng Wang ,&nbsp;Dandan Wu ,&nbsp;Ying Wang ,&nbsp;Tao Zhou ,&nbsp;Terence Xiaoteng Liu ,&nbsp;Ming Wen ,&nbsp;Yongqing Fu","doi":"10.1016/j.jechem.2025.06.052","DOIUrl":"10.1016/j.jechem.2025.06.052","url":null,"abstract":"<div><div>Nitrate-to-ammonia conversion presents an effective method to remediate nitrate pollution while transforming waste into a valuable product and has recently garnered significant attention. Beyond the extensively studied Cu-based catalysts, Co has also garnered significant attention. Identifying the real active sites and elucidating the mechanisms are urgently needed for its development in nitrate reduction. Co₃O₄, particularly its Co³⁺ sites, is an established active phase for nitrate reduction and has been extensively studied. However, unlike the deliberate construction of the Co₃O₄ phase or introducing doping to expose more Co³⁺ in the previous studies, it was found in this work that the active species above could be generated in Ni-Co double hydroxides in the context of nitrate reduction. The in situ generated Co₃O₄, especially the spontaneously more exposed octahedrally coordinated Co³⁺, can significantly facilitate the crucial adsorption of NO₃⁻ and thus the following reaction. Furthermore, incorporated Ni sites accelerate nitrate reduction kinetics by promoting hydrogenation, facilitated by their H*-generating capability. This enhanced catalytic activity yields a superior NH₃ production rate of 7.05 mmol h⁻¹ cm⁻². Besides, a new and more efficient approach for nitrate remediation that focuses on the nitrate sources was proposed and verified through experimentation.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 133-142"},"PeriodicalIF":13.1,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Overcoming voltage issue in bicarbonate electrolysis: dual mass-transfer pathways for CO2 and ions","authors":"Sae In Suh ,&nbsp;Youngrok Lee ,&nbsp;Jae-young Choi ,&nbsp;Hansung Kim ,&nbsp;Hyung-Suk Oh ,&nbsp;Woong Hee Lee","doi":"10.1016/j.jechem.2025.06.058","DOIUrl":"10.1016/j.jechem.2025.06.058","url":null,"abstract":"<div><div>The direct electrolysis of CO₂-captured liquid, such as bicarbonate, offers economic advantages by eliminating the CO₂ regeneration step. However, high cell voltages remain a major barrier. Herein, we propose a new strategy to build dual mass-transfer pathways for CO₂ and ions using a carbon and anion exchange ionomer (AEI) to reduce cell voltages while achieving sufficient Faradaic efficiency (FE) for the CO₂ reduction reaction. By optimizing the interposer materials and ratio of carbon, Ag, and AEI, sufficient FE_CO (57 %) and low cell voltages (3.17 V) were achieved at 100 mA cm⁻². The formation of dual mass-transfer pathways in bicarbonate electrolysis was confirmed through in situ/operando visualization studies. To ensure stability, we recommend the generation of dual mass-transfer pathways using chemically and physically stable materials. Our work provides an understanding of the mass transfer in bicarbonate electrolysis and a direction for overcoming the voltage issue.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 427-433"},"PeriodicalIF":13.1,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144686218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Engineering the electronic structure of Pt-KOx cluster catalyst via alkali metal for efficient oxidative dehydrogenation of propane using CO2","authors":"Wanting Li ,&nbsp;Xinxin Cao ,&nbsp;Meiying Dai ,&nbsp;Tianchang Wang ,&nbsp;Nannan Sun ,&nbsp;Jiong Li ,&nbsp;Wei Han ,&nbsp;Wei Wei ,&nbsp;Xinqing Chen","doi":"10.1016/j.jechem.2025.06.053","DOIUrl":"10.1016/j.jechem.2025.06.053","url":null,"abstract":"<div><div>The oxidative dehydrogenation of propane to propylene using CO₂ (CO₂-ODH) offers a promising route for both propylene production and CO₂ utilization. In this study, we investigate the effect of alkali metal doping on Pt-based catalysts in CO₂-ODH reactions. The optimized 0.1KPt/S-1 catalyst achieved a high propane conversion of 48.3 %, propylene selectivity of 85.5 %, and CO₂ conversion of 19.1 % at a low temperature of 500 °C with the Pt loading of 0.2 wt% and K loading of 0.1 wt% respectively. Characterization techniques, including high-resolution transmission electron microscope (HR-TEM), CO-diffuse reflectance infrared Fourier transform spectroscopy (CO-DRIFTS), X-ray absorption fine structure (XAFS), and X-ray Photoelectron Spectroscopy (XPS), revealed that the doping of K with Pt led to a strong interaction between potassium and platinum (Pt-KO<em>_x</em> cluster). This interaction resulted in a reduction of Pt particle size and a local enrichment of electron density around Pt atoms. These structural modifications improved the anchoring of Pt nanoparticles and enhanced Pt atom dispersion, thereby enhancing the activity of the catalyst and minimizing side reactions. Additionally, pyridine infrared (Py-IR) and temperature-programmed desorption (TPD) studies demonstrated that the prepared 0.1KPt/S-1 catalyst exhibited optimal acidity, which promoted C–H activation and facilitated the efficient adsorption and activation of CO₂. These dual effects significantly lowered the activation energy for CO₂-ODH, enabling efficient dehydrogenation to propylene at a lower temperature of 500 °C. This work highlights the critical role of alkali metal doping in modifying the electronic properties of Pt and optimizing catalyst acidity, which collectively contribute to the enhanced performance of the 0.1KPt/S-1 catalyst. These findings offer valuable insights into the mechanistic pathway of CO₂-ODH and provide a foundation for the rational design of high-performance dehydrogenation catalysts.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 301-310"},"PeriodicalIF":13.1,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679106","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heterostructure of CoSe2@SnSe anode for high-rate performance sodium-ion battery","authors":"Jiahe Li ,&nbsp;Kai Yang ,&nbsp;Dongyang Shu ,&nbsp;Jian Tang ,&nbsp;Yuhan Wu ,&nbsp;Qinghua Deng ,&nbsp;Hongying Zhuo ,&nbsp;Yan Su ,&nbsp;Nan Zhu","doi":"10.1016/j.jechem.2025.06.055","DOIUrl":"10.1016/j.jechem.2025.06.055","url":null,"abstract":"<div><div>Transition metal selenides (TMSs), as promising anode materials for sodium ion batteries (SIBs), still face sluggish Na⁺ diffusion kinetics and severe volume change, resulting in undesirable cycling stability and rate capability. Heterostructure construction is an effective method to improve sodium ion storage in TMSs. Herein, a hierarchical hollow heterostructure of CoSe₂@SnSe is precisely designed through a facile coprecipitation process followed by a selenization strategy. The heterostructure constructed by CoSe₂ and SnSe nanocrystals induces the formation of built-in electric fields and accelerates electron transfer and ion diffusion, thereby improving reaction kinetics significantly. When the as-prepared CoSe₂@SnSe composites are employed as anode materials of SIBs, there exhibit ultra-fast electrochemical reaction kinetics and outstanding cycling stability with a high capacity retention of 488.9 mAh g⁻¹ at a current density of 2.0 A g⁻¹ after 900 cycles. In addition, there still shows an exceptional rate capability of 409.5 mAh g⁻¹ at a high current density of 10 A g⁻¹. This work provides an effective method for the rational designing of heterostructure anode materials for high-performance SIBs.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 124-132"},"PeriodicalIF":13.1,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Iodine redox chemistry remarkably enhancing initial coulombic efficiency and cyclability of high-capacity C/SiOx anode in lithium-ion batteries","authors":"Lankun Shi ,&nbsp;Xiaoxia Wang ,&nbsp;Liang Chang ,&nbsp;Rongji Jiao ,&nbsp;Zhongmin Lang ,&nbsp;Yu Gao ,&nbsp;Wenxiu He ,&nbsp;Zhong-Shuai Wu ,&nbsp;Jinlong Cui ,&nbsp;Juncai Sun","doi":"10.1016/j.jechem.2025.06.054","DOIUrl":"10.1016/j.jechem.2025.06.054","url":null,"abstract":"<div><div>C/SiO<em>_x</em> anode with higher capacity and lower lithiation potential has been recognized as a next-generation alternative to graphite for high-energy-density lithium-ion batteries. However, C/SiO<em>_x</em> suffers from low initial Coulombic efficiency (ICE), which significantly hinders its practical application. Herein, we reported a straightforward iodine redox chemistry strategy to realize highly reversible Li storage behavior and remarkably enhanced ICE of high-capacity C/SiO<em>_x</em> anode toward long-life lithium-ion batteries. Specifically, I₂ is introduced into porous C/SiO<em>_x</em> via simple fumigation to synthesize their composite (C/SiO<em>_x</em>@I), in which I₂ can effectively inhibit the irreversible lithiation reactions of SiO<em>_x</em> through redox reaction. Further, redox reaction intermediates of LiI₃ and LiIO₃ can inhibit the decomposition of electrolyte and LiPF₆, thereby reducing the thickness of the solid-electrolyte interphase film. Consequently, the obtained C/SiO<em>_x</em>@I exhibits a considerable capacity of 1241 mAh g⁻¹ with an improved ICE of 88.5 % at 0.1 A g⁻¹ and impressive cyclability, showing capacity retention of 95 % after 700 cycles at 5.0 A g⁻¹. Besides, the C/SiO<em>_x</em>@I with a 12 % addition ratio can greatly enhance the capacity of graphite from 352 to 454 mAh g⁻¹, with negligible impact on its ICE. When the addition ratio is 9 %, the energy density of the 18,650 cylindrical battery composed of graphite and Li[Ni_0.8Co_0.1Mn_0.1]O₂ can be enhanced by approximately 25 Wh kg⁻¹. This study opens a new avenue for developing high ICE in SiO<em>_x</em>-based anodes for high-energy-density lithium-ion batteries.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 143-152"},"PeriodicalIF":13.1,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Factors determining the Li+ conductivity in high-performance PVDF-based composite electrolytes revealed by solid-state NMR","authors":"Vestince Balidi Mbayachi ,&nbsp;Lixin Liang ,&nbsp;Bao Zhang ,&nbsp;Yaru Zhang ,&nbsp;Guiming Zhong ,&nbsp;Kuizhi Chen ,&nbsp;Guangjin Hou","doi":"10.1016/j.jechem.2025.06.051","DOIUrl":"10.1016/j.jechem.2025.06.051","url":null,"abstract":"<div><div>Composite polymer electrolytes (CPEs) are considered as promising electrolytes for next-generation lithium batteries due to their superior advantages in safety, mechanical stability/flexibility, cathode compatibility, etc. However, achieving high Li⁺ conductivity remains a major challenge, particularly at low temperatures. A key obstacle lies in the limited understanding of the complex interplay among amorphous components, including fillers, plasticizers, and residual solvents, which significantly hampers the rational design of high-performing CPEs. In this contribution, a polyvinylidene fluoride (PVDF)-based composite electrolyte has been developed, exhibiting high room-temperature ionic conductivity/mobility (&gt;1 mS cm⁻¹/0.95 × 10⁻¹¹ m² s⁻¹), along with excellent electrochemical performances, including a wide stability window (4.8 V vs. Li/Li⁺), superior charge/discharge capacity, and reversibility. By performing advanced solid-state nuclear magnetic resonance (ssNMR) techniques, in combination with systematic investigations into solid polymer electrolytes (SPEs), gel polymer electrolytes (GPEs), and CPEs, we establish an efficient NMR-based strategy for deconvoluting the structural and dynamic features of complex electrolyte systems. Notably, the simple ¹H magic-angle spinning (MAS) NMR spectroscopy enables the identification and monitoring of nearly all components in the composite matrix. Motion-sensitive ¹H-¹³C and ¹H-⁷Li correlation experiments further reveal that the rigidity of PVDF polymer chain segments and the presence of residual solvents are two critical factors governing Li⁺ mobility. Moreover, we demonstrate that the order of the filler and plasticizer addition during the CPE fabrication significantly influences the performance of the electrolyte by regulating the retention of residual solvents. This work not only provides molecular-level insights into the structure-ion mobility relationships in the PVDF-based CPEs but also establishes a general NMR-based characterization approach for investigating other complex composite electrolyte materials.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 165-175"},"PeriodicalIF":13.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multisite-passivating molecules assisted regulation of perovskite crystallization kinetics for constructing high-efficiency and stable perovskite solar cells","authors":"Xiaofeng Wu ,&nbsp;Tianshu Yang ,&nbsp;Yuliang Che ,&nbsp;Jidong Deng ,&nbsp;Senxin Pan ,&nbsp;Liming Fu ,&nbsp;Jinbao Zhang ,&nbsp;Jin Xu","doi":"10.1016/j.jechem.2025.06.047","DOIUrl":"10.1016/j.jechem.2025.06.047","url":null,"abstract":"<div><div>Additive engineering has been widely employed to address defects-related issues in perovskite solar cells, including Pb²⁺ vacancy defects, halide migration, and FA⁺ lattice mismatch. However, due to the diversity and complexity of defect types in perovskites, traditional monofunctional additives are typically limited to passivate specific types of defects and are unable to achieve effective passivation of multiple defects simultaneously. To overcome this limitation, this work proposes a multidentate synergistic coordination strategy using a multifunctional additive, ethyl 4-aminopyrazole-5-carboxylate (EAPC), to achieve coordinated passivation of multiple defects in perovskites. Combined theoretical calculations and experimental investigations reveal that the carbonyl group (C=O) of EAPC forms strong coordination bonds with uncoordinated Pb²⁺, while its amino group (–NH₂) couples with halide ions, and the pyrazole-ring N sites establish a hydrogen-bonding network with FA⁺ cations, thereby achieving triple-site synergistic passivation of Pb²⁺-X⁻-FA⁺ defects. This synergistic effect accelerates the nucleation kinetics of perovskite while retarding its growth rate, thereby reducing the defect density and enhancing the crystallinity of the resulting perovskite films. Based on this strategy, the inverted perovskite solar cells (PSCs) achieved a champion power conversion efficiency (PCE) of 24.40 %, maintaining over 90.2 % of their initial efficiency after 1000 h of aging in a N₂-glovebox environment and retaining 85.1 % of the original PCE under ambient conditions. This work pioneers a novel paradigm for synergistic defect passivation in perovskite optoelectronic devices.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 50-60"},"PeriodicalIF":13.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rational design of copper alloy electrocatalysts for electrocatalytic CO2 reduction","authors":"Lei Xue ,&nbsp;Yuntao Qi ,&nbsp;Zhuo Li ,&nbsp;Huimin Yang ,&nbsp;Ruilin Liu ,&nbsp;Bin Zhang","doi":"10.1016/j.jechem.2025.06.046","DOIUrl":"10.1016/j.jechem.2025.06.046","url":null,"abstract":"<div><div>Electrocatalytic carbon dioxide reduction (CO₂RR) represents an innovative technology for energy conversion by converting CO₂ into value-added multi-carbon fuels and chemicals, with copper (Cu)-based catalysts playing a pivotal role as the only known metallic capable of driving such multi-carbon product formation. However, pure Cu catalysts suffer from intrinsic limitations, including suboptimal selectivity toward desired hydrocarbons due to unstable key intermediate, and rapid deactivation caused by catalyst surface reconstruction under operational conditions. Cu-based alloy catalysts address the challenges of low selectivity, poor stability, and high overpotential in the electrocatalytic reduction of CO₂ by optimizing intermediate adsorption and enhancing reaction kinetics. This review systematically examines the catalytic mechanisms, design principles, and performance of Cu alloys in steering CO₂RR pathways toward key products (CO, HCOOH, CH₄, C₂H₄, and C₂₊ alcohols). By alloying Cu with secondary metals (e.g., Ag, Zn, Sn, or rare-earth elements), bimetallic electronic effects modulate intermediate adsorption energetics (*CO, *COOH, *OCHO) and enhance C–C coupling kinetics. We propose future directions integrating in situ characterization and machine learning-driven alloy design to bridge fundamental understanding with industrial application. This work provides a comprehensive roadmap for developing next-generation Cu alloy catalysts to enable efficient CO₂ valorization in a carbon–neutral energy landscape.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 88-108"},"PeriodicalIF":13.1,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144654120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}