Journal of Energy Chemistry最新文献

{"title":"Self-activated micropores tailor carbon layer stacking and graphitic microstructures for high-performance sodium storage","authors":"Xuefeng Yu ,&nbsp;Dongjie Yang ,&nbsp;Xueqing Qiu ,&nbsp;Xuan Xiong ,&nbsp;Conghua Yi ,&nbsp;Hongming Lou ,&nbsp;Weifeng Liu ,&nbsp;Wenli Zhang","doi":"10.1016/j.jechem.2025.03.084","DOIUrl":"10.1016/j.jechem.2025.03.084","url":null,"abstract":"<div><div>Lignin-derived hard carbon shows potential as an anode material for sodium-ion batteries (SIBs) due to its high carbon content and aromatic structure, but its limited reversible adsorption sites and low conductivity hinder performance. This study introduces a self-activation strategy to optimize carbon layer stacking and surface functional groups in microporous carbon, significantly enhancing sodium storage capacity and rate performance. By utilizing oxygen-containing functional groups in organic solvent lignin, we induce micropore formation during pyrolysis, effectively regulating graphite domains and closed pores structures without disrupting carbon layer growth. Unstacked graphene layers serve as efficient electron transport channels and expose additional adsorption sites, simultaneously increasing sodium storage capacity and intrinsic conductivity. The resultant S-OLHC demonstrates a remarkable sodium storage capacity of 358 mA h/g at 0.05 A/g after 200 cycles and maintains 231 mA h/g after 1000 cycles at 2 A/g. This strategy eliminates the need for additional pore-forming agents, offering a simpler, more efficient, and environmentally friendly approach compared to traditional activation methods. This work advances the rational design of high-performance biomass-derived hard carbon for SIBs by leveraging inherent structural characteristics and provides a sustainable low-carbon strategy for lignin valorization in renewable energy storage.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"107 ","pages":"Pages 660-670"},"PeriodicalIF":13.1,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870569","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":"Ni2+ crossover effect induced by electron delocalization to construct corrosion-resistant interface for Li metal battery","authors":"Chengwei Ma ,&nbsp;Hongxing Wang ,&nbsp;Jianwei Wang ,&nbsp;Tinglu Song ,&nbsp;Jiangqi Zhou ,&nbsp;Chunli Li ,&nbsp;Shizhao Xiong","doi":"10.1016/j.jechem.2025.03.078","DOIUrl":"10.1016/j.jechem.2025.03.078","url":null,"abstract":"<div><div>In order to maximize the advantages of high energy density in Li metal batteries, it is necessary to match cathode materials with high specific capacities. Ni-rich layered oxides have been shown to reversibly embed more Li⁺ during charge and discharge processes due to the increased Ni content in their crystal structure, thereby providing higher energy density. However, a significant challenge associated with Ni-rich layered oxide cathodes is the crossover effect, which arises from the dissolution of Ni²⁺ from the cathode, leading to a rapid decline in battery capacity. Through the delocalization-induced effect of solvent molecules, Ni²⁺ is transformed into a fluorinated transition metal inorganic phase layer, thereby forming a corrosion-resistant Li metal interface. This prevents solvent molecules from being reduced and degraded by Li metal anode. The surface of the Li metal anode exhibits a smooth and flat deposition morphology after long-term cycling. Furthermore, the introduction of Ni²⁺ can enhance the concentration gradient of transition metal ions near the cathode, thereby suppressing the dissolution process of transition metal ions. Even the NCM955 cathode with a mass load of 22 mg cm⁻² also has great capacity retention after cycling. The Ni²⁺ induced by high electronegative functional groups of solvent under the electron delocalization effect, preventing the Ni ions dissolution of cathode and constructing a corrosion-resistant Li metal interface layer. This work provides new insights into suppressing crossover effects in Li metal batteries with high nickel cathodes.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"107 ","pages":"Pages 650-659"},"PeriodicalIF":13.1,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870571","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 the Li+ solvation structure in quasi-solid polymer electrolyte for stable lithium metal batteries","authors":"Shuangshuang Zhu ,&nbsp;Zhenxi Li ,&nbsp;Shilun Gao ,&nbsp;Tianhui Cheng ,&nbsp;Ruijie Guo ,&nbsp;Dandan Yang ,&nbsp;Wei Niu ,&nbsp;Junli Yu ,&nbsp;Huabin Yang ,&nbsp;Peng-Fei Cao","doi":"10.1016/j.jechem.2025.03.077","DOIUrl":"10.1016/j.jechem.2025.03.077","url":null,"abstract":"<div><div>Quasi-solid polymer electrolytes (QSPEs) have been attracted significant attentions due to their benefits for simultaneously improved safety and energy density of batteries. Developing electrolytes capable of forming a stable solid electrolyte interphase (SEI) layer is a great challenge for QSPE-based lithium (Li) metal batteries (LMBs). Herein, unlike previously reports that the reconstruction of Li⁺ solvation structures in QSPE requires time-consuming bottom-up polymer synthesis, in current study, a facile approach has been developed to reconstruct the Li⁺ solvation structures in QSPE by adjustment of the salt concentrations. The high proportion of Li⁺-anion complexes can effectively accelerate interfacial Li⁺ diffusion, mitigate the decompositions of organic solvents and induce the formation of a LiF-rich SEI layer, contributing to suppressed Li-dendrite growth. As a result, the Li/QSPE-3/LiFePO₄ (LFP) cell performs an ultralong lifespan with capacity retention of 77.4% over 3000 cycles at 1 C. With a high-voltage LiCoO₂ cathode, the cell can stably cycle over 200 cycles at 25 °C (capacity retention of ∼83.8%). With accelerated ion transport dynamics due to the reconstructed Li⁺ solvation structure, the QSPE-3 (the salt concentration is 3 M) is applicable in a wide temperature range. The Li/QSPE-3/LFP full cell exhibits 58.1% and 102.6% of discharge capacity at −15 and 90 °C, respectively, compared to those operated at 25 °C. This study demonstrates a facile yet effective approach on enhancing electrode/electrolyte interfacial stability, enabling the LMBs with simultaneously enhanced safety and high energy density.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"107 ","pages":"Pages 671-681"},"PeriodicalIF":13.1,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870404","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":"Encapsulating Sb atoms in highly conductive Cu-S frameworks for fast and robust sodium storage","authors":"Wen Chen ,&nbsp;Youtan Pan ,&nbsp;Keyan Hu ,&nbsp;Hao Nie ,&nbsp;Shuai Li ,&nbsp;Huan Zhang ,&nbsp;Chong Zheng ,&nbsp;Fuqiang Huang ,&nbsp;Wujie Dong","doi":"10.1016/j.jechem.2025.03.080","DOIUrl":"10.1016/j.jechem.2025.03.080","url":null,"abstract":"<div><div>Sodium ion batteries (SIBs) currently lack sufficient anode materials that simultaneously demonstrate exceptional capacity, durability under prolonged cycling, and rapid charging capabilities. Antimony (Sb) has emerged as an attractive alloy-based anode candidate due to its notable theoretical capacity, nevertheless grappling with significant challenges including substantial structural deformation during operation and sluggish ion transport kinetics. Herein, we atomically disperse Sb into open Cu-S frameworks with high cyclic stability and good conductivity. In-situ and ex-situ analyses reveal the multistep reversible reaction processes during the charging (formation of Cu₃SbS₄) and discharging (precipitation of fracture-resistant Na₃Sb in the ionic-conductive Na<em>_x</em>Cu₂S₂/Na₂S matrix) processes. As a result, the thoughtfully engineered Cu₃SbS₄ anode, without requiring additional carbon compositing, attains a high reversible specific capacity of 597 mAh g⁻¹ at a 0.3 C rate. It also maintains approximately 95% capacity retention even at 15 C after 4300 cycles. The assembled Cu₃SbS₄||Na₃V₂(PO₄)₃ full cell achieves 10 C high rate performance and demonstrates excellent cycling stability of ∼94.0% capacity retention after 200 cycles. Our approach to material design might offer a novel method for creating durable, high-capacity, and high-rate anode materials for sodium-ion batteries.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"107 ","pages":"Pages 591-598"},"PeriodicalIF":13.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870409","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":"Promoting CO2 electroreduction to C2H4 product by promoting water molecules activation on MgO/CuO catalyst","authors":"Mengyao Feng ,&nbsp;Zhichao Chen ,&nbsp;Hanlei Sun ,&nbsp;Shuo Yao ,&nbsp;Ziyong Liu ,&nbsp;Ming Lu ,&nbsp;Fuli Li ,&nbsp;Hongzhi Wang ,&nbsp;Licheng Liu","doi":"10.1016/j.jechem.2025.03.074","DOIUrl":"10.1016/j.jechem.2025.03.074","url":null,"abstract":"<div><div>Electrocatalytic CO₂ reduction reaction (CO₂RR) to ethylene (C₂H₄) represents a promising approach to reducing CO₂ emissions and producing high-value chemicals. The ethylene productivity is always limited by the slow reaction kinetics and the high-performance catalysts are significantly desired. Many efforts have been made to develop a catalyst to activate CO₂ molecules. However, as another reactant, H₂O activation does not receive the attention it deserves. In particular, slow H₂O dissociation kinetics limit the rate of proton supply, severely impairing the production of C₂H₄. Here, we designed a MgO-modified CuO catalyst (MgO/CuO), which can promote H₂O dissociation and enhance CO₂ adsorption at the same time to realize the efficient ethylene production. The optimal catalyst exhibits a Faraday efficiency for C₂H₄ reached 54.4% at −1.4 V vs<em>.</em> RHE in an H-cell, which is 1.4 times that of pure CuO (37.9%), and it was further enhanced to a 56.7% in a flow cell, with a high current density of up to 535.9 mA cm⁻² at −1.0 V vs<em>.</em> RHE. Experimental and theoretical calculations show that MgO/CuO plays a bifunctional role in the CO₂RR, which facilitates the adsorption and activation of CO₂ by CuO and simultaneously accelerates H₂O dissociation by MgO doping. The in situ XRD experiments demonstrate that the introduction of MgO protects CuO active phase to avoid overreduction and preserves the active centers for CO₂RR. In combination with in situ FTIR and DFT calculations, the protonation process from *CO to *COH and asymmetric C–C coupling step are promoted by the enhanced water activation and proton coupling on MgO/CuO. This work provides new insights into the CO₂ and H₂O coactivation mechanism in CO₂RR and a potential universal strategy to design ethylene production electrocatalysts.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"107 ","pages":"Pages 582-590"},"PeriodicalIF":13.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865207","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":"Role of NH4+/H3O+ on the Na+ storage performance for aqueous-synthesized Na3(VOPO4)2F cathode materials and their removal","authors":"Xiaoping Yang ,&nbsp;Yibo Zhang ,&nbsp;Xianshu Wang ,&nbsp;Wenjiao Li ,&nbsp;Xiangshao Yin ,&nbsp;Jun Yao ,&nbsp;Weihong Jiang ,&nbsp;Jianguo Duan ,&nbsp;Yingjie Zhang ,&nbsp;Lin Xu ,&nbsp;Ding Wang","doi":"10.1016/j.jechem.2025.03.075","DOIUrl":"10.1016/j.jechem.2025.03.075","url":null,"abstract":"<div><div>The aqueous preparation of Na₃(VOPO₄)₂F cathode material with low cost and good structural stability has attracted extensive attention for advancing sodium-ion batteries (SIBs). However, the inclusive heterogeneous cations incorporated into the material lattice, dominated by coordination chemistry, are always overlooked. Herein, the embroiled NH₄⁺/H₃O⁺ cations in the Na₃(VOPO₄)₂F lattice have been first disclosed during aqueous co-precipitation. It involves the electrostatic interactions between hydrogen protons (NH₄⁺/H₃O⁺) and electronegative oxygen atoms (V=O and V–O–P groups), which induces the terrible Na⁺-storage performance, as demonstrated by multiple characterizations. Followingly, the very-facile operation, i.e. heat treatment, has been raised to remove NH₄⁺/H₃O⁺ cations and then achieved high-performance Na₃(VOPO₄)₂F. Therefore, the Na₃(VOPO₄)₂F||Na cell contributes to the significantly improved discharge capacity (129.7 mAh g⁻¹) and voltage plateau from 3.63 to 3.87 V (vs. Na/Na⁺) at 0.2 C. The ultrahigh capacity retentions of 93.7% and 76.7% after 1000 and 3500 cycles at 1 and 20 C rates under 25 °C are harvested, respectively, as well as high/low-temperature performances and rate capability. Eventually, the as-assembled Na₃(VOPO₄)₂F||hard carbon full-cell delivers excellent long-term cycling stability over 1000 cycles with 97.5% retention at 3 C. These emphasize the high-efficacy synthesis of Na₃(VOPO₄)₂F and provide insights into the aqueous co-precipitation for the development of materials used in SIBs.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"107 ","pages":"Pages 612-621"},"PeriodicalIF":13.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870411","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 d-p orbital hybridization through oxygen vacancies boosting capacity and kinetics of layered double hydroxides for durable aqueous magnesium-ion batteries","authors":"Weizhi Kou ,&nbsp;Zhitang Fang ,&nbsp;Yangyang Sui ,&nbsp;Yubo Yang ,&nbsp;Cong Liu ,&nbsp;Chenyu Yang ,&nbsp;Congyan Jiang ,&nbsp;Gang Yang ,&nbsp;Luming Peng ,&nbsp;Xuefeng Guo ,&nbsp;Weiping Ding ,&nbsp;Wenhua Hou","doi":"10.1016/j.jechem.2025.03.071","DOIUrl":"10.1016/j.jechem.2025.03.071","url":null,"abstract":"<div><div>Layered double hydroxides (LDHs) are potential cathode materials for aqueous magnesium-ion batteries (AMIBs). However, the low capacity and sluggish kinetics significantly limit their electrochemical performance in AMIBs. Herein, we find that oxygen vacancies can significantly boost the capacity, electrochemical kinetics, and structure stability of LDHs. The corresponding structure-performance relationship and energy storage mechanism are elaborated through exhaustive in/ex-situ experimental characterizations and density functional theory (DFT) calculations. Specially, in-situ Raman and DFT calculations reveal that oxygen vacancies elevate orbital energy of O 2<em>p</em> and electron density of O atoms, thereby enhancing the orbital hybridization of O 2<em>p</em> with Ni/Co 3<em>d</em>. This facilitates electron transfer between O and adjacent Ni/Co atoms and improves the covalency of Ni–O and Co–O bonds, which activates Ni/Co atoms to release more capacity and stabilizes the Ov-NiCo-LDH structure. Moreover, the distribution of relaxation times (DRT) and molecular dynamics (MD) simulations disclose that the enhanced <em>d</em>-<em>p</em> orbital hybridization optimizes the electronic structure of Ov-NiCo-LDH, which distinctly reduces the diffusion energy barriers of Mg²⁺ and improves the charge transfer kinetics of Ov-NiCo-LDH. Consequently, the assembled Ov-NiCo-LDH//active carbon (AC) and Ov-NiCo-LDH//perylenediimide (PTCDI) AMIBs can both deliver high specific discharge capacity (182.7 and 59.4 mAh g⁻¹ at 0.5 A g⁻¹, respectively) and long-term cycling stability (85.4% and 89.0% of capacity retentions after 2500 and 2400 cycles at 1.0 A g⁻¹, respectively). In addition, the practical prospects for Ov-NiCo-LDH-based AMIBs have been demonstrated in different application scenarios. This work not only provides an effective strategy for obtaining high-performance cathodes of AMIBs, but also fundamentally elucidates the inherent mechanisms.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"107 ","pages":"Pages 558-569"},"PeriodicalIF":13.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870405","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":"Iridium-based electrocatalysts for oxygen evolution reaction in acidic media: from in situ characterization to rational design","authors":"Bo Sun ,&nbsp;Haoyan Cheng ,&nbsp;Kexing Song ,&nbsp;Zhonghan Jiang ,&nbsp;Changrui Shi ,&nbsp;Hao Liang ,&nbsp;Shuaiyu Ma ,&nbsp;Hao Hu","doi":"10.1016/j.jechem.2025.03.067","DOIUrl":"10.1016/j.jechem.2025.03.067","url":null,"abstract":"<div><div>Proton exchange membrane water electrolyzer (PEMWE) is crucial for the storage and conversion of renewable energy. However, the harsh anode environment and the oxygen evolution reaction (OER), which involves a four-electron transfer, result in a significant overpotential that limits the overall efficiency of hydrogen production. Identifying active sites in the OER is crucial for understanding the reaction mechanism and guiding the development of novel electrocatalysts with high activity, cost-effectiveness, and durability. Herein, we summarize the widely accepted OER mechanism in acidic media, in situ characterization and monitoring of active sites during the reaction, and provide a general understanding of the active sites on various catalysts in the OER, including Ir-based metals, Ir-based oxides, carbon/oxide-supported Ir, Ir-based perovskite oxides, and Ir-based pyrochlore oxides. For each type of electrocatalysts, reaction pathways and actual active sites are proposed based on in situ characterization techniques and theoretical calculations. Finally, the challenges and strategic research directions associated with the design of highly efficient Ir-based electrocatalysts are discussed, offering new insights for the further scientific advancement and practical application of acidic OER.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"107 ","pages":"Pages 472-494"},"PeriodicalIF":13.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143858719","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":"Chemometrics-boosted protocols for effortless evaluation of factors affecting the electrochemical nitrate reduction to ammonia","authors":"Noemi Pirrone,&nbsp;Sara Garcia-Ballesteros,&nbsp;Julia Amici,&nbsp;Micaela Castellino,&nbsp;Simelys Hernández,&nbsp;Federico Bella","doi":"10.1016/j.jechem.2025.03.072","DOIUrl":"10.1016/j.jechem.2025.03.072","url":null,"abstract":"<div><div>Food production demand is constantly growing, entailing a proportional increment in fertilisers and pharmaceuticals use, which are eventually introduced to the environment, leading, among others, to an imbalance in the nitrogen cycle. Electrochemical nitrate reduction reaction is a delocalised route for nitrates elimination and green ammonia production. In the present study, we carry out nitrates electroreduction over a commercial MoS₂ catalyst, focusing on optimising selected input factors affecting the reaction. Concretely, Doehlert design of experiment and response surface methodology are employed to find the proper combination of supporting salt concentration in the electrolyte, applied potential, and catalyst loading at the working electrode, with the overall aim to boost Faradaic efficiency (FE) and ammonia production. As a matter of fact, varying these input factors, the obtained FE values ranged from ∼2% to ∼80%, highlighting the strength of the newly conceived approach. Moreover, our multivariate strategy allows the quantification of each factor effect and elucidates hidden interactions between them. Finally, successful extended durability tests are performed for 100 h at both FE and productivity (<em>P</em>) optimal conditions. In parallel, cell electrodes are characterised by in-depth structural, morphological, and surface techniques, before and after ageing, overall demonstrating the outstanding stability of the proposed electrochemical reactor.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"107 ","pages":"Pages 599-611"},"PeriodicalIF":13.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143870410","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 vertical alignment of MoS2 on Co/C dodecahedron boosting phase change materials for solar-thermoelectric generation","authors":"Keke Chen ,&nbsp;Yang Li ,&nbsp;Yuhao Feng ,&nbsp;Xuefeng Li ,&nbsp;Zhiqiang Li ,&nbsp;Shuming Liu ,&nbsp;Chunhua Ge ,&nbsp;Xiao Chen","doi":"10.1016/j.jechem.2025.03.070","DOIUrl":"10.1016/j.jechem.2025.03.070","url":null,"abstract":"<div><div>Solar-thermoelectric generators (STEGs) capable of harnessing solar energy for conversion into clean electricity are pivotal for advancing towards carbon neutrality. The integration of phase change materials (PCMs) with STEGs facilitates power generation regardless of solar radiation flux due to their robust thermal management capacity. However, the inherent solar-thermal conversion efficiency limitation of PCMs hinders the production of high and sustained electrical output. Herein, a multidimensional engineering strategy is proposed to align two-dimensional (2D) molybdenum disulfide (MoS₂) nanosheets vertically in situ on a dodecahedron composed of zero-dimensional (0D) Co nanoparticles and three-dimensional (3D) high graphitized carbon derived from ZIF-67, thus significantly boosting the solar-thermoelectric energy generation of polyethylene glycol (PEG). The resultant PEG-Co/C@MoS₂ composite PCMs exhibit a high solar-thermal conversion efficiency of 92.89%, benefiting from the synergy of multiple components and unique structural arrangements. When coupled with thermoelectric devices, this powerful STEG yields a high and durable output voltage of 197.51 mV and a current of 52.47 mA under 100 mW cm⁻², outperforming the majority of previously reported literature. This PCM-integrated solar-thermoelectric generator overcomes limitations associated with temporal and meteorological variations, enabling simultaneous high-density heat and electricity generation for energy conservation and environmental sustainability.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"107 ","pages":"Pages 548-557"},"PeriodicalIF":13.1,"publicationDate":"2025-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865205","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}