Journal of Energy Chemistry最新文献

{"title":"A seaweed-inspired separator for high performance Zn metal batteries: Boosting kinetics and confining side-reactions","authors":"","doi":"10.1016/j.jechem.2024.09.047","DOIUrl":"10.1016/j.jechem.2024.09.047","url":null,"abstract":"<div><div>Uncontrolled dendrite growth, sluggish reaction kinetics, and drastic side reactions on the anode-electrolyte interface are the main obstacles that restrict the application prospect of aqueous zinc-ion batteries. Traditional glass fiber (GF) separator with chemical inertness is almost ineffective in restricting these challenges. Herein, inspired by the ionic enrichment behavior of seaweed plants, a facile biomass species, anionic sodium alginate (SA), is purposely decorated on the commercial GF separator to tackle these issues towards Zn anode. Benefiting from the abundant zincophilic functional groups and superior mechanical strength properties, the as-obtained SA@GF separator could act as ion pump to boost the Zn²⁺ transference number (0.68), reduce the de-solvation energy barrier of hydrated Zn²⁺, and eliminate the undesired concentration polarization effect, which are verified by experimental tests, theoretical calculations, and finite element simulation, respectively. Based on these efficient modulation mechanisms, the SA@GF separator can synchronously achieve well-aligned Zn deposition and the suppression of parasitic side-reactions. Therefore, the Zn||Zn coin cell integrated with SA@GF separator could yield a prolonged calendar lifespan over 1230 h (1 mA cm⁻² and 1 mAh cm⁻²), exhibiting favorable competitiveness with previously reported separator modification strategies. Impressively, the Zn-MnO₂ full and pouch cell assembled with the SA@GF separator also delivered superior cycling stability and rate performance, further verifying its practical application effect. This work provides a new design philosophy to stabilize the Zn anode from the aspect of separator.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":null,"pages":null},"PeriodicalIF":13.1,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531283","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":"MOF-derived Ni3Fe/Ni/NiFe2O4@C for enhanced hydrogen storage performance of MgH2","authors":"","doi":"10.1016/j.jechem.2024.09.048","DOIUrl":"10.1016/j.jechem.2024.09.048","url":null,"abstract":"<div><div>Magnesium hydride (MgH₂) is an important material for hydrogen (H₂) storage and transportation owing to its high capacity and reversibility. However, its intrinsic properties have considerably limited its industrial application. In this study, the NiFe-800 catalyst as metal-organic framework (MOF) derivative was first utilized to promote the intrinsic properties of MgH₂. Compared to pure MgH₂, which releases 1.24 wt% H₂ in 60 min at 275 °C, the MgH₂-10 NiFe-800 composite releases 5.85 wt% H₂ in the same time. Even at a lower temperature of 250 °C, the MgH₂-10 NiFe-800 composite releases 3.57 wt% H₂, surpassing the performance of pure MgH₂ at 275 °C. Correspondingly, while pure MgH₂ absorbs 2.08 wt% H₂ in 60 min at 125 °C, the MgH₂-10 NiFe-800 composite absorbs 5.35 wt% H₂ in just 1 min. Remarkably, the MgH₂-10 NiFe-800 composite absorbs 2.27 wt% H₂ in 60 min at 50 °C and 4.64 wt% H₂ at 75 °C. This indicates that MgH₂-10 NiFe-800 exhibits optimum performance with excellent kinetics at low temperatures. Furthermore, the capacity of the MgH₂-10 NiFe-800 composite remains largely stable after 10 cycles. Moreover, the Mg₂Ni/Mg₂NiH₄ acts as a “hydrogen pump”, providing effective diffusion channels that enhance the kinetic process of the composite during cycling. Additionally, Fe⁰ facilitates electron transfer and creates hydrogen diffusion channels and catalytic sites. Finally, carbon (C) effectively prevents particle agglomeration and maintains the cyclic stability of the composites. Consequently, the synergistic effects of Mg₂Ni/Mg₂NiH₄, Fe⁰, and C considerably improve the kinetic properties and cycling stability of MgH₂. This work offers an effective and valuable approach to improving the hydrogen storage efficiency in the commercial application of MgH₂.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":null,"pages":null},"PeriodicalIF":13.1,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142552664","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":"Efficiency improvement for post-sulfurized CIGS solar cells enabled by in situ Na doping","authors":"","doi":"10.1016/j.jechem.2024.09.046","DOIUrl":"10.1016/j.jechem.2024.09.046","url":null,"abstract":"<div><div>Despite sulfurization offers the advantage of improving the photovoltaic performance in preparing Cu(In,Ga)Se₂ (CIGS) absorbers, deep level defects in the absorber and poor energy level alignment on the front surface are still main obstacles limiting the improvement of power conversion efficiency (PCE) in sulfided CIGS solar cells. Herein, an in-situ Na doping strategy is proposed, in which the tailing effect of crystal growth is used to promote the sulfurization of CIGS absorbers. It is found that the grain growth is supported by Na incorporating due to the enrichment of NaSe<em>_x</em> near the upper surface. The high soluble Na during grain growth can not only suppress intrinsic In_Cu donor defects in the absorber, but also tailor S distribution in bulk and the band alignment at the heterojunction, which are both beneficial for the effective electron carriers. Meanwhile, the Na aggregation near the bottom of the absorber also contributes to the crystalline quality increasing and favorable ultra-thin MoSe₂ formation at back contact, resulting in a reduced barrier height conducive to hole transport. PCE of the champion device is as high as 16.76% with a 28% increase. This research offers new insights into synthesizing CIGS solar cells and other chalcogenide solar cells with superior cell performance when using an intense sulfurization process.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":null,"pages":null},"PeriodicalIF":13.1,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538679","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":"In situ seed layer bandgap engineering leading to the conduction band offset reversion and efficient Sb2Se3 solar cells with high open-circuit voltage","authors":"","doi":"10.1016/j.jechem.2024.09.042","DOIUrl":"10.1016/j.jechem.2024.09.042","url":null,"abstract":"<div><div>Sb₂Se₃ solar cells have achieved a power conversion efficiency (PCE) of over 10%. However, the serious open-circuit voltage deficit (<em>V</em>_OC-deficit), induced by the hard-to-control crystal orientation and heterojunction interface reaction, limits the PCE of vapor transport deposition (VTD) processed Sb₂Se₃ solar cells. To overcome the <em>V</em>_OC-deficit problem of VTD processed Sb₂Se₃ solar cells, herein, an in-situ bandgap regulation strategy is innovatively proposed to prepare a wide band gap Sb₂(S,Se)₃ seed layer (WBSL) at CdS/Sb₂Se₃ heterojunction interface to improve the PCE of Sb₂Se₃ solar cells. The analysis results show that the introduced Sb₂(S,Se)₃ seed layer can enhance the [001] orientation of Sb₂Se₃ thin films, broaden the band gap of heterojunction interface, and realize a “Spike-like” conduction band alignment with Δ<em>E</em>_c = 0.11 eV. In addition, thanks to the suppressed CdS/Sb₂Se₃ interface reaction after WBSL application, the depletion region width of Sb₂Se₃ solar cells is widened, and the quality of CdS/Sb₂Se₃ interface and the carrier transporting performance of Sb₂Se₃ solar cells are significantly improved as well. Moreover, the harmful Se vacancy defects near the front interface of Sb₂Se₃ solar cells can be greatly diminished by WBSL. Finally, the PCE of Sb₂Se₃ solar cells is improved from 7.0% to 7.6%; meanwhile the <em>V</em>_OC is increased to 466 mV which is the highest value for the VTD derived Sb₂Se₃ solar cells. This work will provide a valuable reference for the interface and orientation regulation of antimony-based chalcogenide solar cells.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":null,"pages":null},"PeriodicalIF":13.1,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531588","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":"Cu gradient design to attain high efficient solution-processed CuIn(S,Se)2 solar cells","authors":"","doi":"10.1016/j.jechem.2024.09.040","DOIUrl":"10.1016/j.jechem.2024.09.040","url":null,"abstract":"<div><div>Solution-processed chalcopyrite solar cells are widely regarded as a promising alternative method in reducing the cost compared with vacuum-based techniques. It is noted that the absorber layer usually needs to be prepared under a high insert pressure (∼1.6 atm) to suppress element loss or under a mild pressure but additional surface etching is needed for fabricating high efficient solar cell. Herein, a copper gradient structured precursor is proposed to prepare CuIn(S,Se)₂ (CISSe) film under a mild pressure (1.1 atm). The designed gradient Cu not only promotes crystal grain growth and tailors the defects, but also avoids the surface etching of the formed CISSe film for the fabrication of high efficient solar cells. Further, Cu gradient design decreases the conduction band offset of heterojunction, boosting the carriers transport across the p-n heterojunction. Accordingly, a 13.35% efficient CISSe solar cell, comparable to the high efficient CISSe solar cell prepared by this method under high pressure or with film surface etching, is fabricated. This work provides a facile pathway to fabricate high efficient solution-processed chalcopyrite solar cell, avoiding high selenization pressure and film etching, and shows huge potential for solution-processed copper-based solar cells.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":null,"pages":null},"PeriodicalIF":13.1,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530527","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":"Achievable dual-strategy to stabilize Li-rich layered oxide interface by a one-step wet chemical reaction towards long oxygen redox reversibility","authors":"","doi":"10.1016/j.jechem.2024.09.044","DOIUrl":"10.1016/j.jechem.2024.09.044","url":null,"abstract":"<div><div>Oxygen release and electrolyte decomposition under high voltage endlessly exacerbate interfacial ramifications and structural degradation of high energy-density Li-rich layered oxide (LLO), leading to voltage and capacity fading. Herein, the dual-strategy of Cr<em>_x</em>B complex coating and local gradient doping is simultaneously achieved on LLO surface by a one-step wet chemical reaction at room temperature. Density functional theory (DFT) calculations prove that stable B–O and Cr–O bonds through the local gradient doping can significantly reduce the high-energy O 2<em>p</em> states of interfacial lattice O, which is also effective for the near-surface lattice O, thus greatly stabilizing the LLO surface. Besides, differential electrochemical mass spectrometry (DEMS) indicates that the Cr<em>_x</em>B complex coating can adequately inhibit oxygen release and prevents the migration or dissolution of transition metal ions, including allowing speedy Li⁺ migration. The voltage and capacity fading of the modified cathode (LLO-CrB) are adequately suppressed, which are benefited from the uniformly dense cathode electrolyte interface (CEI) composed of balanced organic/inorganic composition. Therefore, the specific capacity of LLO-CrB after 200 cycles at 1C is 209.3 mA h g⁻¹ (with a retention rate of 95.1%). This dual-strategy through a one-step wet chemical reaction is expected to be applied in the design and development of other anionic redox cathode materials.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":null,"pages":null},"PeriodicalIF":13.1,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530537","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":"Selenate-based heterojunction with cobalt–nickel paired site for electrocatalytic oxidation of 5-hydroxymethylfurfural coupling water splitting to produce hydrogen","authors":"","doi":"10.1016/j.jechem.2024.09.045","DOIUrl":"10.1016/j.jechem.2024.09.045","url":null,"abstract":"<div><div>It is very appealing that 5-hydroxymethylfurfural (HMF) is electrocatalytical oxidized as 2,5-furandicarboxylic acid (FDCA) linking to non-classical cathodic hydrogen (H₂) production. However, the electrocatalysts for electrocatalytic HMF oxidative reaction (e-HMFOR) have been facing low Faradaic efficiency (<em>FE</em>) and high water splitting voltage. Herein, we propose a strategy of the NiSeO₃@(CoSeO₃)₄ heterojunction by constructing a Co-Ni paired site, where the Co site is in charge of adsorbing for HMF while the electrons are transferred to the Ni site, thus giving the NiSeO₃@(CoSeO₃)₄ heterojunction superior electrocatalytic performances for e-HMFOR and water splitting. By optimizing conditions, the NiSeO₃@(CoSeO₃)₄ heterojunction has high conversion of 99.7%, high selectivity of 99.9%, and high <em>FE</em> of 98.4% at 1.3 V, as well as low cell voltage of 1.31 V at 10 mA cm⁻² in 1 M KOH + 0.1 M HMF. This study offers a potential insight for e-HMFOR to high value-added FDCA coupling water splitting to produce H₂ in an economical manner.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":null,"pages":null},"PeriodicalIF":13.1,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530531","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":"Comprehensive review of advances in machine-learning-driven optimization and characterization of perovskite materials for photovoltaic devices","authors":"","doi":"10.1016/j.jechem.2024.09.043","DOIUrl":"10.1016/j.jechem.2024.09.043","url":null,"abstract":"<div><div>Perovskite solar cells (PSCs) have developed rapidly, positioning them as potential candidates for next-generation renewable energy sources. However, conventional trial-and-error approaches and the vast compositional parameter space continue to pose challenges in the pursuit of exceptional performance and high stability of perovskite-based optoelectronics. The increasing demand for novel materials in optoelectronic devices and establishment of substantial databases has enabled data-driven machine-learning (ML) approaches to swiftly advance in the materials field. This review succinctly outlines the fundamental ML procedures, techniques, and recent breakthroughs, particularly in predicting the physical characteristics of perovskite materials. Moreover, it highlights research endeavors aimed at optimizing and screening materials to enhance the efficiency and stability of PSCs. Additionally, this review highlights recent efforts in using characterization data for ML, exploring their correlations with material properties and device performance, which are actively being researched, but they have yet to receive significant attention. Lastly, we provide future perspectives, such as leveraging Large Language Models (LLMs) and text-mining, to expedite the discovery of novel perovskite materials and expand their utilization across various optoelectronic fields.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":null,"pages":null},"PeriodicalIF":13.1,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538678","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":"Tailoring sub-5 nm Fe-doped CeO2 nanocrystals within confined spaces to boost photocatalytic hydrogen evolution under visible light","authors":"","doi":"10.1016/j.jechem.2024.09.041","DOIUrl":"10.1016/j.jechem.2024.09.041","url":null,"abstract":"<div><div>This work aimed to study the efficiency of the reverse micelle (RM) preparation route in the syntheses of sub-5 nm Fe-doped CeO₂ nanocrystals for boosting the visible-light-driven photocatalytic hydrogen production from methanol aqueous solutions. The effectiveness of confining precipitation reactions within micellar cages was evaluated through extensive physicochemical characterization. In particular, the nominal composition (0–5 mol% Fe) was preserved as ascertained by ICP-MS analysis, and the absence of separate iron-containing crystalline phases was supported by X-ray diffraction. The effective aliovalent doping and modulation of the optical properties were investigated using UV-Vis, Raman, and photoluminescence spectroscopies. 2.5 mol% iron was found to be an optimal content to achieve a significant decrease in the band gap, enhance the concentration of oxygen vacancy defects, and increase the charge carrier lifetime. The photocatalytic activity of Fe-doped CeO₂ prepared at different Fe contents with RM preparation was studied and compared with undoped CeO₂. The optimal iron load was identified to be 2.5 mol%, achieving the highest hydrogen production (7566 μmol L⁻¹ after 240 min under visible light). Moreover, for comparison, the conventional precipitation (P) method was adopted to prepare iron containing CeO₂ at the optimal content (2.5 mol% Fe). The Fe-doped CeO₂ catalyst prepared by RM showed a significantly higher hydrogen production than that obtained with the sample prepared by the P method. The optimal Fe-doped CeO₂, prepared by the RM method, was stable for six reuse cycles. Moreover, the role of water in the mechanism of photocatalytic hydrogen evolution under visible light was studied through the test in the presence of D₂O. The obtained results evidenced that hydrogen was produced from the reduction of H⁺ by the electrons promoted in the conduction band, while methanol was preferentially oxidized by the photogenerated positive holes.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":null,"pages":null},"PeriodicalIF":13.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142531285","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":"Charge polarity inversion and zincophilicity improvement for chitosan separator towards durable aqueous zinc-ion batteries","authors":"","doi":"10.1016/j.jechem.2024.09.036","DOIUrl":"10.1016/j.jechem.2024.09.036","url":null,"abstract":"<div><div>Aqueous zinc-ion batteries encounter enormous challenges such as Zn dendrites and parasitic reactions. Separator modification is a highly effective strategy to address these issues. With the advantages of low cost, nontoxicity, biodegradability, good film-forming ability, superior hydrophilicity, and rich functional groups, chitosan is an ideal matrix for constructing separators. However, the presence of positive charges within chitosan in weakly acidic electrolytes is unfavorable for dendrite inhibition. Herein, Schiff base reaction is introduced to modify chitosan matrix, transforming its charge polarity from positive to negative. Additionally, NbN with excellent zincophilicity is coated onto chitosan matrix, forming a Janus separator with low thickness of 19 μm and considerably improved mechanical properties. The resultant separator can promote the transport of Zn²⁺ ions while triggering a repulsive shielding effect against anions, therefore dramatically enhancing Zn²⁺ ion transfer number from 0.28 to 0.49. This separator can also facilitate desolvation process, improve exchange current density, restrict two-dimensional Zn²⁺ ion diffusion, and enhance electrochemical kinetics, contributing to significantly inhibited dendrite growth, by-product formation, and hydrogen evolution. Consequently, stable and reversible Zn stripping/plating process is enabled for over 2500 h at 2 mA cm⁻² and 2 mAh cm⁻². And great rate capability and excellent cyclability can be achieved for full batteries even under harsh conditions. This work provides new insights into separator design for Zn-based batteries.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":null,"pages":null},"PeriodicalIF":13.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142530538","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}