Journal of Energy Chemistry最新文献

{"title":"Bi-MOF-derived BiPS4/C armored with conductive Ni-HHTP: a dual MOF-mediated strategy for polysulfide suppression in sodium storage","authors":"Ming Yue ,&nbsp;Wen Chen ,&nbsp;Yanzhe Sheng ,&nbsp;Yanhe Xiao ,&nbsp;Baochang Cheng ,&nbsp;Shuijin Lei","doi":"10.1016/j.jechem.2025.06.035","DOIUrl":"10.1016/j.jechem.2025.06.035","url":null,"abstract":"<div><div>Metal phosphosulfides (MPS<em>_x</em>), especially BiPS₄, have emerged as promising anode candidates for sodium-ion batteries, distinguished by distinctive multinary redox chemistry, open tunnel-type structure, and high theoretical capacity (&gt; 1000 mAh g⁻¹). However, their practical implementation is fundamentally limited by polysulfide dissolution/shuttling and structural instability during prolonged cycling. Herein, we develop a groundbreaking two-stage metal–organic framework (MOF)-engineered compositing strategy through which Bi-MOF-derived BiPS₄/C pillars are robustly armored with conductive Ni-HHTP (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene) nanorods. Density functional theory calculations reveal that this design achieves dual functionality: increased carrier density for enhanced charge transport dynamics and effective polysulfide adsorption to inhibit dissolution. The fabricated BiPS₄/C@Ni-HHTP composite delivers remarkable electrochemical properties, including high initial charge/discharge specific capacities of 1063.6/1181.3 mAh g⁻¹ at 0.1 A g⁻¹ and outstanding long-term stability with 99.2% capacity retention after 2000 cycles at 2 A g⁻¹. Such superb performance stems from the perfect synergy of the inherent high-capacity redox behavior of BiPS₄, the buffering effect of MOF-derived carbon, and the conductivity, adsorption sites and mechanical resilience of Ni-HHTP. This work establishes a new design paradigm for MPS<em>_x</em> materials, demonstrating how to simultaneously overcome conductivity limitations and shuttle effects in conversion-type electrodes.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"109 ","pages":"Pages 859-869"},"PeriodicalIF":13.1,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144571936","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":"Inhibition of Pb0/I0 by polyoxometalate-driven redox strategy enables efficient and stable perovskite solar cells","authors":"Xueying Xu ,&nbsp;Jialong Duan ,&nbsp;Yue Peng ,&nbsp;Weilin Chen ,&nbsp;Jie Dou ,&nbsp;Qiyao Guo ,&nbsp;Yuanyuan Zhao ,&nbsp;Xinyu Zhang ,&nbsp;Benlin He ,&nbsp;Qunwei Tang","doi":"10.1016/j.jechem.2025.06.034","DOIUrl":"10.1016/j.jechem.2025.06.034","url":null,"abstract":"<div><div>Persistent illumination inevitably leads to the formation of Pb⁰ and I⁰ species in perovskite film, serving as non-radiative recombination centers and thus limiting the process of the commercial application. Herein, we propose a redox strategy to dynamically eliminate the defective Pb⁰ and I⁰ generated during device operation using polyoxometalate (POM) as an additive. Benefiting from the reversible W^5+/6+ redox activity and the structural stability when accepting and donating electrons from perovskite film, POMs play a role of the redox shuttle that oxidizes Pb⁰ into Pb²⁺ and reduces I⁰ into I⁻, consequently inhibiting the formation of Pb⁰ and I⁰ species and reducing the film defects, which benefits the improvement of stability and performance. As a result, the efficiency of carbon-based all-inorganic CsPbI₂Br cell is significantly improved to 15.12% and the efficiency of the organic-inorganic hybrid (Cs_0.05MA_0.05FA_0.9)Pb(I_0.93Br_0.07)₃ cell is also increased to 24.20%. More importantly, the target device shows superior stability under air conditions after storage for 1500 h, high temperature after 750 h, and persistent irradiation over 200 h, respectively, providing a new method for efficient and stable perovskite solar cells.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"109 ","pages":"Pages 893-901"},"PeriodicalIF":13.1,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580572","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":"MXene/SnS Mott-Schottky heterostructure for modulation of sulfur reduction reaction kinetics in advanced lithium-sulfur batteries","authors":"Guisheng Deng ,&nbsp;Zhuo Jiang ,&nbsp;Guanliang Tang ,&nbsp;Wen Xi ,&nbsp;Youfang Zhang ,&nbsp;Shuo Huang ,&nbsp;Dongming Cai ,&nbsp;Rui Wang ,&nbsp;Yansheng Gong ,&nbsp;Huanwen Wang ,&nbsp;Jun Jin","doi":"10.1016/j.jechem.2025.06.033","DOIUrl":"10.1016/j.jechem.2025.06.033","url":null,"abstract":"<div><div>Lithium-sulfur batteries (LSBs) offer high energy density and low cost but face challenges such as low sulfur utilization, lithium polysulfides (LiPSs) shuttling, and limited reaction kinetics. To address these issues, we rationally design a Ti₃C₂T<em>_x</em>/SnS Mott-Schottky heterostructure with a built-in electric field. This three-dimensional (3D) porous architecture can enhance sulfur loading, facilitate electrolyte penetration, and expose more adsorption and catalytic sites. More importantly, the built-in electric field facilitates charge transfer and directs LiPSs migration from SnS to Ti₃C₂T<em>_x</em>. The oriented migration of LiPSs enables rapid catalytic conversion at the Ti₃C₂T<em>_x</em>/SnS heterogeneous interface, enhancing electrocatalytic activity and sulfur reduction reaction kinetics. The Ti₃C₂T<em>_x</em>/SnS/S cathode achieves a high initial capacity (1367.1 mAh g⁻¹), excellent rate performance (602.7 mAh g⁻¹ at 3 C), and stable long cycling performance with an average capacity decay rate of only 0.029% per cycle at 2 C. Additionally, a high-sulfur-loaded 3D-printed cathode with loading of 12.7 mg cm⁻² manufactured using 3D printing exhibits an areal capacity of 15.0 mAh cm⁻², retaining 8.9 mAh cm⁻² after 70 cycles.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 19-28"},"PeriodicalIF":13.1,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579707","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":"Trace filling strategy of amphoteric molecules for large-capacity and long-lasting Li-Fe-F conversion all-solid-state batteries","authors":"Yuan Meng ,&nbsp;Jiulin Hu ,&nbsp;Qijie Yu ,&nbsp;Meng Lei ,&nbsp;Hailong Wu ,&nbsp;Yi Xu ,&nbsp;Rong Qian ,&nbsp;Chilin Li","doi":"10.1016/j.jechem.2025.06.036","DOIUrl":"10.1016/j.jechem.2025.06.036","url":null,"abstract":"<div><div>Polyethylene oxide (PEO)-based solid-state polymer electrolytes (SPE) face the challenges of insufficient ionic conductivity and uncontrollable Li dendrite growth. The filler strategy can reinforce anode interface stability, but at the cost of a large filler content (usually more than 10 wt%). This would increase the granular sensation, gravitational separation risk, and electrolyte membrane roughness with the creation of inhomogeneous Li⁺ transport channels between filler and polymer. Herein, we propose a trace filling strategy to address the above problems by introducing an amphoteric molecule L-Cysteine (LCy) as an eco-friendly and low-cost electrolyte additive. Only trace amount of LCy is required and integrated into PEO to form a homogenous, granule-less SPE with enhanced ionic conductivity and dendrite suppression capability. The ionic conductivity increases to 0.54 mS cm⁻¹ at 60 ℃ after introducing only 1 wt% LCy. The amphotericity of LCy with basic –NH₂ and acidic –COOH groups can promote the dissociation of Li salt and release more free Li ions through Lewis acid-base synergy, as well as the formation of multiple hydrogen bonds between PEO and LCy. The trace LCy additive swiftly leads to the formation of more ionic conductive interphases at both the anode and cathode sides. The composite SPE enables the stable cycling of Li metal for over 1400 h at 0.2 mA cm⁻² and sustains a maximum current density up to 1.4 mA cm⁻² in Li‖Li symmetric cells. The corresponding all-solid-state Li‖FeF₃ full cells exhibit a high specific capacity up to 567 mA h g⁻¹ at 0.2 C and stable cycling performance for at least 700 cycles at 0.5 C with a high capacity retention. The excellent interface compatibility also guarantees the achievement of high-capacity Li-Fe-F conversion reaction even under the thin electrolyte membrane thickness and larger-scale pouch cell configuration.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 153-164"},"PeriodicalIF":13.1,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663533","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":"Single-molecule dynamic dissociation and polymerization-governed in situ repair and encapsulation for high-performance perovskite solar cells","authors":"Xianfei Cao,&nbsp;Yong Qi,&nbsp;Wenshuai Zhao,&nbsp;Zengyao Guo,&nbsp;Tong Hu,&nbsp;Zhengyang Gao,&nbsp;Wenchao Han,&nbsp;Lei Li,&nbsp;Shufen Zhang","doi":"10.1016/j.jechem.2025.06.037","DOIUrl":"10.1016/j.jechem.2025.06.037","url":null,"abstract":"<div><div>Despite the ongoing increase in the efficiency of perovskite solar cells (PSCs), residual lead iodide (PbI₂) and moisture sensitivity issues continue to constrain their further commercialization. Herein, we propose a thermally mediated in situ repair and encapsulation strategy to construct high-performance PSCs by incorporating piperazine thioctic acid salt (TAPPZ) as a dopant into the perovskite precursor. Thermally dissociated piperazine (PPZ) from TAPPZ integrates microcrystals to form larger grains (&gt;2000 nm), while the carboxylic acid in thioctic acid (TA) and the amine salt in TAPPZ synergistically passivate and transform PbI₂, significantly reducing its residual amount. Additionally, TAPPZ undergoes thermal self-crosslinking during perovskite annealing, enabling melt-polymerization to form in situ encapsulation for enhanced water resistance. The TAPPZ-incorporated device achieves a remarkable efficiency of 25.65% and exhibits excellent operational stability, retaining over 90% of its initial efficiency after 2000 h under ambient conditions (20–30 °C, 20%–30% relative humidity). This study provides new insights into the construction of high-performance perovskite solar cells by designing and synthesizing multifunctional single molecules for in situ repair and encapsulation of perovskites.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"109 ","pages":"Pages 923-930"},"PeriodicalIF":13.1,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580377","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":"Localized feature selection augmented dual-stream fusion network for state of health estimation of lithium-ion batteries","authors":"Zheng Wei ,&nbsp;Mingwei Wu ,&nbsp;Ju Wu ,&nbsp;Xiaoshan Zhang ,&nbsp;Kaichuang Fei ,&nbsp;Qiu He ,&nbsp;Zhonghui Shen ,&nbsp;Zhi-Peng Li ,&nbsp;Yan Zhao","doi":"10.1016/j.jechem.2025.06.030","DOIUrl":"10.1016/j.jechem.2025.06.030","url":null,"abstract":"<div><div>Lithium-ion batteries are essential for renewable energy storage, necessitating efficient battery management systems (BMS) for optimal performance and longevity. Accurate estimation of the state of health (SOH) is crucial for BMS safety, yet current machine learning-based SOH estimation relying on global aging features often overlooks localized degradation patterns. In this study, we introduce a novel SOH estimation pipeline that integrates voltage-range-specific segmentation with a multi-stage, cross-validation-driven localized feature-selection framework and a feature-augmented dual-stream fusion network. Our methodology partitions full-range voltage into localized intervals to construct a degradation-sensitive feature library, from which 4 optimal features are identified from a set of 336 candidates. These selected features are combined with raw voltage signals via a dual-stream architecture that employs a dynamic gating mechanism to recalibrate feature contributions during training. Cross-validation-based evaluation on datasets encompassing different chemistries and charge/discharge protocols demonstrate that our approach can achieve lower average root-mean-square-error (Oxford dataset: 0.7201%, Massachusetts Institute of Technology (MIT) dataset: 0.7184%) compared to baseline models. An in-depth analysis of the physical significance of the screened features improves the interpretability of the features. This work underscores the significant potential of leveraging localized feature enhancement in SOH estimation by systematically integrating degradation-sensitive features, thereby offering precise estimation.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"109 ","pages":"Pages 879-892"},"PeriodicalIF":13.1,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580376","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":"Electron trapping fluorine stabilizing Bi–O motif for pH-universal CO2 electroreduction to formate at industrial-level current density","authors":"Ziyan Yang ,&nbsp;Chunqi Yang ,&nbsp;Rongzhen Chen ,&nbsp;Yihua Zhu ,&nbsp;Ling Zhang ,&nbsp;Yuhang Li ,&nbsp;Chunzhong Li","doi":"10.1016/j.jechem.2025.06.031","DOIUrl":"10.1016/j.jechem.2025.06.031","url":null,"abstract":"<div><div>The generation of economically valuable chemicals through electrocatalytic CO₂ reduction reaction (CO₂RR) is a highly attractive strategy for achieving the carbon cycle. Bismuth (Bi) is a prospective element due to the high selectivity for formate. Researches demonstrate the Bi–O bonds have a significant effect on the key *OCHO intermediate. Herein, we report a F-doped catalyst that displays remarkable performance in generating formate in pH-universal electrolytes. Specifically, the as-prepared F-Bi/BOC@GO achieves formate Faradaic efficiencies (FE_formate) around 95% in a wide range of pH from 1 to 13.6. Furthermore, at an industrial level, current density of 200 mA cm⁻², the F-Bi/BOC@GO catalyst shows a much more stable FE_formate than the catalyst without introducing F. In situ Raman reveals that the doped F can greatly improve the stability of Bi–O bonds during the electroreduction process. DFT calculations further demonstrate that fluorine doping raises the energy barrier for oxygen desorption from Bi–O motifs, thus enhancing the stability of active sites. Combined with X-ray photoelectron spectroscopy (XPS), the doped F acts as an electron trapping, which may direct electrons towards Bi–Bi bonds, thus protecting the key Bi–O motif. This work reveals the critical role of fluorine in stabilizing Bi–O active centers across a wide pH range, maintaining high formate Faradaic efficiency for a longer time than the catalyst without fluorine introduction.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 263-269"},"PeriodicalIF":13.1,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663475","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":"Electron-deficient borate anions tailoring the electronic structure of defect-rich amorphous nickel–cobalt cathode for superior capacitive energy storage","authors":"Shaoxiong Du,&nbsp;Wang Yang,&nbsp;Ziyang Cao,&nbsp;Lingyu Kong,&nbsp;Yao Yao,&nbsp;Xi Wu,&nbsp;Tianyu Bai,&nbsp;Chen Zhang,&nbsp;Zhengxuan Li,&nbsp;Yongfeng Li","doi":"10.1016/j.jechem.2025.06.029","DOIUrl":"10.1016/j.jechem.2025.06.029","url":null,"abstract":"<div><div>Designing transition metal nickel–cobalt-based battery-type electrode materials driven by anions is crucial for achieving rapid OH⁻ ion transport under electrochemical activation conditions, thereby improving capacitance performance. Herein, borate anions are selected through theoretical calculations, and two-dimensional (2D) defect-rich amorphous nickel–cobalt-based borate is synthesized via a facile chemical reduction method. Under potentiostatic modification, activated products (NCB-G-E) are obtained. In situ Raman spectra reveal that electron-deficient borate extracts electrons from metal centers, facilitating the oxidation state transition of Ni and Co. Theoretical calculations show that in situ adsorbed borate regulates the d-band centers of metal sites, enhancing OH⁻ intermediate adsorption. Meanwhile, borate anion adsorption accelerates the deprotonation and activation processes. Electrochemical tests demonstrate that NCB-G-E displays superior capacitance performance, with a high quality specific capacity of 383.3 mA h g⁻¹ and 65% retention rate at 30 A g⁻¹, surpassing most nickel–cobalt-based electrodes. The assembled asymmetric supercapacitor presents an impressive energy density of 68.2 Wh kg⁻¹ and good cycling stability. This work highlights the role of electron-deficient borate in tuning metal band structure and promoting oxidation state transition through synergistic defect advantages, offering new prospects for advanced battery-type energy storage materials.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"109 ","pages":"Pages 786-797"},"PeriodicalIF":13.1,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144535053","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":"How do substituted phenyl-based cations affect the structure-property-stability relationship of low-dimensional perovskites?","authors":"Yixin Zhang ,&nbsp;Bryon W. Larson ,&nbsp;Fei Zhang","doi":"10.1016/j.jechem.2025.06.028","DOIUrl":"10.1016/j.jechem.2025.06.028","url":null,"abstract":"<div><div>Incorporating organic bulky cations in the precursor or post-treatment to achieve two-dimensional/three-dimensional (2D/3D) heterojunction is an effective strategy for enhancing the stability of perovskite materials. However, the issue of insufficient charge transport in 2D perovskites limits their development, and the fundamental mechanism of out-of-plane carrier transport remains unclear. This study designed and synthesized seven organic phenyl-core cations, differentiated at the 1- and 1,4-positions, and identified the impacts on the corresponding properties of the 2D crystalline perovskite. Shorter cations facilitated a more compact arrangement of adjacent inorganic layers, aligning to favor charge transport along the vertical direction. In addition, introducing high electronegativity led to increased intermolecular interactions, resulting in enhanced structural stability and improved phenyl ring π-orbital overlap and interlayer electron coupling, yielding efficient charge transport. Resilience to thermal stressing of the perovskite was strongly correlated with the carbon chain length of the spacer cations. The increase in cation length and the reduction in the rigidity of the amino-terminal both aided in the dispersion of thermal stress in the inorganic framework. Additional hydrogen bonding also contributed to mitigating structural disorder.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"110 ","pages":"Pages 10-18"},"PeriodicalIF":13.1,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144579616","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":"Enhancing the cycling stability of layered cathodes for sodium-ion batteries via phase transition regulation","authors":"Guojie Chen ,&nbsp;Yuxi Luo ,&nbsp;Jiahua Liu ,&nbsp;Xiaoyu Gao ,&nbsp;Yuguang Pu ,&nbsp;Pinyu Niu ,&nbsp;Wenguang Zhao ,&nbsp;Wenxin Tong ,&nbsp;Tao Zeng ,&nbsp;Xianya Wang ,&nbsp;Lei Cao ,&nbsp;Jiaxin Zheng ,&nbsp;Zhewen Ma ,&nbsp;Nian Zhang ,&nbsp;Wenhai Ji ,&nbsp;Zhenhong Tan ,&nbsp;Ping Miao ,&nbsp;Junrong Zhang ,&nbsp;Jun Wang ,&nbsp;Rui Wang ,&nbsp;Yinguo Xiao","doi":"10.1016/j.jechem.2025.06.027","DOIUrl":"10.1016/j.jechem.2025.06.027","url":null,"abstract":"<div><div>Sodium-ion batteries have been deemed as a sustainable alternative to lithium-ion systems due to the abundance and affordability of sodium sources. Nevertheless, developing high-energy–density P2-type layered oxide cathodes with long-term cycling stability poses challenges, stemming from irreversible phase transitions, structural degradation, and lattice oxygen instability during electrochemical cycling. Here, we propose a one-step NbB₂ modification strategy that enhances both bulk and surface properties of Na_0.8Li_0.12Ni_0.22Mn_0.66O₂ cathodes. By exploiting different techniques, we disclose that bulk Nb and B doping combined with a Nb-Transition Metal-BO₃ surface layer reconstruction enable a reversible P2-OP4 phase transition and, meanwhile, improve anionic redox reversibility. In addition, Li⁺ migrates into alkali-metal layers and underpins the layered structure through the “pillar effect”, thereby facilitating the Na⁺ diffusion in Na_0.8Li_0.12Ni_0.22Mn_0.66O₂ cathodes and retaining their structural integrity at high voltage. As a result, the modified cathodes achieve 93.6% capacity retention after 500 cycles at 1C and deliver specific capacities above 114 mA h g⁻¹ at 10C within 2.0–4.3 V. Contrary to the previous studies reporting that OP4 phase are detrimental to the structural stability of layered cathodes, we experimentally validate that a well-regulated P2-OP4 phase transition is beneficial for structural and electrochemical stabilities.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"109 ","pages":"Pages 839-849"},"PeriodicalIF":13.1,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144556809","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}