ACS Applied Energy Materials最新文献

{"title":"Mo–CoP/Yb2O3 Heterostructure for Boosted Alkaline Hydrogen Evolution Reaction and Urea/Hydrazine Oxidation-Assisted Processes","authors":"Chao Fan,&nbsp;Kang Wang,&nbsp;Ruihang Hu and Yan-Qin Wang*,&nbsp;","doi":"10.1021/acsaem.4c0268210.1021/acsaem.4c02682","DOIUrl":"https://doi.org/10.1021/acsaem.4c02682https://doi.org/10.1021/acsaem.4c02682","url":null,"abstract":"<p >The development of highly efficient nonprecious metal electrocatalysts for hydrogen evolution reaction (HER) is important and urgent. Herein, a heterostructured electrocatalyst Mo–CoP/Yb₂O₃ was fabricated between Mo-doped CoP and rare-earth oxide Yb₂O₃. Mo–CoP/Yb₂O₃ not only displays outstanding HER activity but also exhibits outstanding urea oxidation and hydrazine oxidation activity, for which the HER activity is indicated by the low overpotential values of 33 mV at 10 mA cm^–2 and 100 mV at 100 mA cm^–2, the urea oxidation performance with the potential of 1.449 V vs RHE at 100 mA cm^–2, and the hydrazine oxidation performance with the potential of 0.153 V vs RHE at 100 mA cm^–2. Further, when Mo–CoP/Yb₂O₃ was used as both the cathode and anode for urea-assisted hydrogen production (cell voltage of 1.513 V at 100 mA cm^–2) and hydrazine oxidation-assisted hydrogen production (cell voltage of 0.253 V at 100 mA cm^–2), it is economically advantageous. The results show that Mo-doped CoP plays a significant role in the catalytic process, while the incorporation of Yb₂O₃ can enhance the catalyst’s hydrophilicity and increase the water adsorption, potentially aiding in water splitting. Besides, the synergistic effect of Mo doping and heterostructure regulates the electronic structure and facilitates the electron transfer, thus improving the HER activity of Mo–CoP/Yb₂O₃.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 24","pages":"12103–12111 12103–12111"},"PeriodicalIF":5.4,"publicationDate":"2024-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tuning on Highly Dispersed Iridium on Antimony-Doped Tin Oxide with Strong Metal–Support Interaction for Oxygen Evolution Reaction","authors":"Inayat Ali Khan,&nbsp;Per Morgen,&nbsp;Raghunandan Sharma* and Shuang Ma Andersen*,&nbsp;","doi":"10.1021/acsaem.4c0236310.1021/acsaem.4c02363","DOIUrl":"https://doi.org/10.1021/acsaem.4c02363https://doi.org/10.1021/acsaem.4c02363","url":null,"abstract":"<p >In the present study, we used a simple and efficient microwave-assisted NaBH₄ reduction method to generate unsupported and antimony-doped tin oxide (ATO)-supported metallic iridium nanoparticles (Ir-NPs). The effects of pretreatment on the support and iridium precursor oxidation state in two different salts (IrCl₃·<i>n</i>H₂O and (NH₄)₂IrCl₆) were investigated to produce efficient and stable electrocatalysts for oxygen evolution reaction (OER) in acidic electrolysis. Electrocatalysts with an Ir loading of 40 wt % supported on pristine ATO and acid-treated ATO were synthesized, and the performance was compared with the unsupported, synthesized, and commercial electrocatalysts. The Ir-NPs loaded on the support surface with 98% reaction yield and narrow size distribution, while without the support, somewhat agglomerated Ir-NPs were generated. A strong metal–support electron interaction at the junction of the Ir support, promoting the electrocatalyst stability and activity, was achieved for the supported electrocatalysts obtained from both precursors. The best electrocatalyst has demonstrated an excellent OER activity of 597 A g_Ir^–1 compared to that of 305 A g_Ir^–1 for a commercial IrO₂ benchmark and a high potentiodynamic accelerated stress test stability (OER activity retention: 76% compared to 31% for commercial IrO₂). The superior electrochemical performance can be attributed to the prereaction strong adsorption of the iridium precursor on the support surface, resulting in postreaction highly dispersed small NPs over the support surface generating strong metal–support interaction at the junction of Ir-ATO.AT.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 24","pages":"11977–11987 11977–11987"},"PeriodicalIF":5.4,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interactions between Functional Units Inducing the Evolution of Electronic Band Structure and Improved Thermoelectric Performance of n-Type (Bi2)x(Bi2Te3)y Pseudosuperlattices","authors":"Yujie Ouyang,&nbsp;Min Zhang,&nbsp;Chunxia Li,&nbsp;Xianda Li,&nbsp;Sen Xie,&nbsp;Fan Yan,&nbsp;Haoran Ge,&nbsp;Ziwei Li,&nbsp;Qiwei Tong,&nbsp;Pierre F. P. Poudeu,&nbsp;Yong Liu,&nbsp;Wei Liu* and Xinfeng Tang*,&nbsp;","doi":"10.1021/acsaem.4c0254910.1021/acsaem.4c02549","DOIUrl":"https://doi.org/10.1021/acsaem.4c02549https://doi.org/10.1021/acsaem.4c02549","url":null,"abstract":"<p >An ordered construction of functional units is a promising avenue to synergistically optimize the electrical and thermal transport properties of superlattices and pseudosuperlattices. Although it is accepted that interlayer interactions between functional units could effectively regulate carrier transport parameters, the influence of artificial stacking modalities on electronic band structures and thermoelectric performance required in-depth studies. Here, we report the fabrication of two batches of n-type (Bi₂)_<i>x</i>(Bi₂Te₃)_<i>y</i> pseudosuperlattice films with varying thicknesses and termination surfaces. An obvious downshift of the Fermi level position and a remarkable increase of the electron density were observed in the (Bi₂)_<i>x</i>(Bi₂Te₃)_<i>y</i> films with rising Bi₂ content, which is attributed to the spontaneous electron injection from the Bi₂ layers to the Bi₂Te₃ layers due to their work function difference. By angle-resolved photoemission spectroscopy measurements, we observed rich electronic band structures in Bi₂-terminated (Bi₂)_<i>x</i>(Bi₂Te₃)_<i>y</i> films, containing two sets of band dispersions: one originating from Bi₂Te₃ and the other from the hybridization of Bi₂ states and Bi₂Te₃ states, similar to those reported in Bi₁Te₁ and Bi₄Te₃ superlattices. In contrast, the band dispersions are dominated by the energy bands from the Bi₂Te₃ compound when the Bi₂Te₃ layers are the termination surfaces. Moreover, the thinner films showed higher electron density and carrier effective mass due to the suppression of p-type Bi_Te antisite defects. Finally, the (Bi₂)₁₂(Bi₂Te₃)₆ pseudosuperlattice film achieved the highest power factor of 1.27 mW m^–1 K^–2, surpassing the performance of pristine Bi₂Te₃ and Bi films as well as other pseudosuperlattices.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 24","pages":"12048–12058 12048–12058"},"PeriodicalIF":5.4,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pathway to High Rate Capability in Interconnected Composite Electrolytes: A Case Study with a Single-Ion-Conducting Polymer","authors":"Ritu Sahore*,&nbsp;Kyra D. Owensby,&nbsp;Beth L. Armstrong,&nbsp;Jiyoung Ock,&nbsp;Michelle L. Lehmann,&nbsp;Andrew M. Ullman,&nbsp;Sergiy Kalnaus* and Xi Chelsea Chen*,&nbsp;","doi":"10.1021/acsaem.4c0164210.1021/acsaem.4c01642","DOIUrl":"https://doi.org/10.1021/acsaem.4c01642https://doi.org/10.1021/acsaem.4c01642","url":null,"abstract":"<p >In a three-dimensional interconnected polymer/ceramic composite electrolyte (3D composite), both the polymer and ceramic electrolyte phases are individually connected with a polymer-rich surface layer to provide conformal contact with the electrodes. This work investigates how the transference number of the polymer phase affects the electrochemical properties of the 3D composite. Here, we fabricate a 3D composite using a “single-ion” conducting polymer electrolyte (PE), Li_{1+<i>x</i>+<i>y</i>}Al_<i>x</i>Ti_2–<i>x</i>Si_<i>y</i>P_3–<i>y</i>O₁₂ (LICGC) ceramic, and compare its electrochemical properties with the neat polymer, and with a 3D composite made with a dual-ion-conducting PE (we reported previously). Our results reveal that changing the polymer phase from a dual-ion-conducting PE to a single-ion-conducting PE results in a 9-fold increase in the limiting current density, although the interfacial impedance between the polymer and LICGC ceramic remains high (and contributes significantly to the total impedance of the 3D composite). The limiting current density of the 3D composite is dictated by the PE and minimally affected by the ceramic scaffold. The ceramic scaffold, however, helps to ease the concentration gradient buildup within the PE and moderately improves the overall transference number. The LICGC scaffold does not provide any additional Li dendrite resistance due to its high reactivity with Li.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 24","pages":"11714–11723 11714–11723"},"PeriodicalIF":5.4,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142874898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Self-Supported Co-VS2@MoS2 Heterostructure for Boosting Overall Water Splitting","authors":"Ping Yin,&nbsp;Ting Feng,&nbsp;Ting Lei* and Wen Fu,&nbsp;","doi":"10.1021/acsaem.4c0246410.1021/acsaem.4c02464","DOIUrl":"https://doi.org/10.1021/acsaem.4c02464https://doi.org/10.1021/acsaem.4c02464","url":null,"abstract":"<p >It is highly desirable to develop highly effective and cost-efficient non-noble-metal electrocatalysts for water splitting. Herein, Co-doped VS₂@MoS₂ heterostructure with nanorod arrays morphology on nickel foam (Co-VS₂@MoS₂/NF) were synthesized by a facile hydrothermal method. The as-obtained Co-VS₂@MoS₂/NF heterostructure catalyst exhibits remarkably electrocatalytic activity as a bifunctional catalyst for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in 1.0 M KOH, benefiting from largely exposed edge active sites, fast electron transport, and strong electronic interactions between MoS₂ and Co-VS₂. Co-VS₂@MoS₂/NF catalyst requires an overpotential of 73.4 and 161.3 mV at a current density of 10 mA cm^–2 for HER and OER, respectively. Furthermore, the electrolyzer with Co-VS₂@MoS₂/NF as both the cathode and the anode shows a low cell voltage of 1.53 V at 10 mA cm^–2 and excellent long-term durability.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 24","pages":"11996–12003 11996–12003"},"PeriodicalIF":5.4,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142870177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metal Organic Framework (MOF-808) Incorporated Composite Polymer Electrolyte for Stable All-Solid-State Lithium Batteries","authors":"Zexin Hong,&nbsp;Peize Li,&nbsp;Qiyao Zou,&nbsp;Long Gu,&nbsp;Jianwen Wang,&nbsp;Liting Deng,&nbsp;Chao Wang,&nbsp;Yuying Zhang,&nbsp;Mengxian Li,&nbsp;Jiajun Chen,&nbsp;Rui Si* and Chunzhen Yang*,&nbsp;","doi":"10.1021/acsaem.4c0238010.1021/acsaem.4c02380","DOIUrl":"https://doi.org/10.1021/acsaem.4c02380https://doi.org/10.1021/acsaem.4c02380","url":null,"abstract":"<p >All-solid-state lithium-ion batteries (ASSBs) are emerging as promising candidates for power applications in electric vehicles and various energy storage systems, garnering significant research interest. However, enhancing the Li⁺ conductivity and stability of polymer electrolyte has been a persistent challenge in the field. This work demonstrates a novel approach to fabricating a composite polymer electrolyte (CPE) with uniformly dispersed porous MOF-808 particles in a poly(ethylene oxide) (PEO) matrix mixed with LiTFSI salt. The resulted CPE exhibits a 20-fold increase in ion conductivity (9.7 × 10^–4 S cm^–1 at 60 °C) and an expanded electrochemical window up to 4.8 V. The assembled ASSBs with LiFePO₄ cathodes and Li metal anodes under 50 MPa pressure show good specific capacity (140.3 mAh g^–1) and excellent cycling stability (93.5% capacity retention). This CPE has also demonstrated excellent compatibility with the high-voltage cathode material NCM811, exhibiting superior electrochemical stability. Results of this work highlight the use of MOF materials in CPE, advancing the development of next-generation solid-state batteries.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 24","pages":"11967–11976 11967–11976"},"PeriodicalIF":5.4,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Multinuclear Solid-State NMR Study of the Aqueous Solid-Electrolyte Interphase Formation in NaTi2(PO4)3","authors":"Vytautas Klimavičius*,&nbsp;Nadežda Traškina,&nbsp;Aurimas Dubauskas,&nbsp;Matas Manionis,&nbsp;Jurgis Pilipavičius and Linas Vilčiauskas*,&nbsp;","doi":"10.1021/acsaem.4c0222410.1021/acsaem.4c02224","DOIUrl":"https://doi.org/10.1021/acsaem.4c02224https://doi.org/10.1021/acsaem.4c02224","url":null,"abstract":"<p >Solid-electrolyte interphases enable stable operation of non-aqueous Li-ion batteries, but their formation, especially in aqueous systems, is not well understood. NASICON-structured NaTi₂(PO₄)₃ is a widely studied ion insertion negative electrode material for various aqueous electrochemical applications. This study uses multinuclear ³¹P, ²³Na, ¹³C, ^47,49Ti solid-state NMR to examine NaTi₂(PO₄)₃ aqueous degradation and solid-electrolyte interphase formation. The results indicate that interphase consists of amorphous phases similar to TiO(OH)(H₂PO₄)·<i>n</i>H₂O and carboxylic groups on carbonaceous phases, formed through electrochemical degradation. The formation of the aqueous solid-electrolyte interphase results in low Coulombic efficiency, pronounced self-discharge, and capacity loss of NaTi₂(PO₄)₃ during charge–discharge cycling.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 24","pages":"11665–11669 11665–11669"},"PeriodicalIF":5.4,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsaem.4c02224","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phenolic Resin-Based Silicon/Carbon Composites Modified with Ultralow-Content Single-Walled Carbon Nanotubes via Liquid-Phase Mixing Method for Lithium-Ion Batteries","authors":"Chunliang Wu,&nbsp;Lezhi Yang,&nbsp;Shuang Wang,&nbsp;Qingjiao Peng,&nbsp;Lieke Luo,&nbsp;Qizhen Zhu,&nbsp;Razium A. Soomro,&nbsp;Lifu Chen,&nbsp;Zhengguo Gu,&nbsp;Xuanhao Wu,&nbsp;Bin Xu* and Feiyue Tu*,&nbsp;","doi":"10.1021/acsaem.4c0227610.1021/acsaem.4c02276","DOIUrl":"https://doi.org/10.1021/acsaem.4c02276https://doi.org/10.1021/acsaem.4c02276","url":null,"abstract":"<p >Commercialization of silicon (Si) as an anode material in lithium-ion batteries (LIBs) is hindered by its low electrical conductivity and substantial volume change during lithiation-delithiation. A promising solution to address these issues lies in developing silicon/carbon (Si/C) composites. Herein, a liquid-phase mixing strategy is employed to combine nano-Si, phenolic resin (PF), and single-walled carbon nanotubes (SWCNTs, 0.05 wt %) with an optimal stirring speed of 3000 rpm, which ensures uniform dispersion of SWCNTs without inducing oxidation of the nano-Si. After a high-temperature carbonization, the 3000-Si/SWCNTs/carbon-5 composite (3000-SSC-5) is produced, features a unique structural configuration. In this composite, the PF-based hard carbon effectively encapsulates nano-Si, suppressing its volume expansion, while the SWCNTs form a conductive network that significantly enhances electrical conductivity. When tested as an anode of LIBs, the 3000-SSC-5 electrode exhibits excellent rate performance (1114 mAh g^–1 at 4 A g^–1), and outstanding cycling performance (884 mAh g^–1 after 250 cycles at 0.5 A g^–1). Furthermore, the full cell of 3000-SSC-5 <b>//</b> NCM811 achieves a capacity retention rate of 82.3% after 1000 cycles, highlighting its superior long-term stability. This paper demonstrates that the electrochemical properties of PF-based Si/C composites can be significantly enhanced through liquid-phase mixing with an ultralow content of SWCNTs. The unique composite configuration and excellent electrochemical performance underscore the promising potential of 3000-SSC-5 for commercial LIBs.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 24","pages":"11910–11920 11910–11920"},"PeriodicalIF":5.4,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Air-Induced Conductivity Loss in Fullerene ETLs Can Drive Charge Extraction Losses in Vapor-Deposited Perovskite Solar Cells","authors":"Austin G. Kuba*,&nbsp;Chaiwarut Santiwipharat,&nbsp;Raphael J. Richardson,&nbsp;Ujjwal K. Das,&nbsp;Kevin D. Dobson and William N. Shafarman*,&nbsp;","doi":"10.1021/acsaem.4c0230610.1021/acsaem.4c02306","DOIUrl":"https://doi.org/10.1021/acsaem.4c02306https://doi.org/10.1021/acsaem.4c02306","url":null,"abstract":"<p >The effect of air exposure on all-vapor processed perovskite solar cells using C₆₀ fullerene electron transport layers (ETLs) was investigated. C₆₀ is used in lead halide perovskite solar cells as an ETL to decrease hysteresis and improve stabilized power output. However, air exposure to n-i-p solar cells using C₆₀ ETLs without encapsulation or doping can result in performance degradation due to FF loss and the onset of s-shaped <i>J–V</i> curves. This is correlated to orders of magnitude increase in C₆₀ resistivity upon air exposure. Drift-diffusion simulations provide evidence that a change in the C₆₀ carrier concentration or mobility can lead to the FF loss and s-shaped <i>J–V</i> curve. The degradation does not occur when using inorganic ETLs but does occur in p-i-n architecture using C₆₀ ETLs, further confirming that the C₆₀ layer is the source of the degradation. This is an additional pathway for perovskite solar cell degradation upon air exposure beyond the instability of the perovskite itself. The loss of efficiency can be reduced in p-i-n solar cells using a LiF interlayer, and a better combination of hysteresis and air stability can be achieved in n-i-p solar cells using a C₆₀/SnO₂ bilayer ETL.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 24","pages":"11921–11928 11921–11928"},"PeriodicalIF":5.4,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142875048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"S-Scheme Heterojunction Efficient Extraction of Hot Carriers in CsPbBr3/Bi4O5I2 for Enhanced Photocatalytic H2 Evolution and CO2 Reduction","authors":"Ye Zhang,&nbsp;Mai Zhang,&nbsp;Cong Luo,&nbsp;Yakun Li,&nbsp;Xue Zhang and Linlin Zhang*,&nbsp;","doi":"10.1021/acsaem.4c0241910.1021/acsaem.4c02419","DOIUrl":"https://doi.org/10.1021/acsaem.4c02419https://doi.org/10.1021/acsaem.4c02419","url":null,"abstract":"<p >This study investigates the photocatalytic capabilities of an S-scheme heterojunction formed by CsPbBr₃ and Bi₄O₅I₂ for H₂ evolution and CO₂ reduction. The heterojunction is designed to enhance the extraction of hot carriers and charge separation through interface engineering and an internal electric field. The initial <i>T</i>_c at higher pumping intensities indicates that CsPbBr₃ carriers injected into Bi₄O₅I₂ at higher energies and temperatures cooled from 1800 to 800 K within 200 fs after photoexcitation. Compared with CsPbBr₃, CsPbBr₃/Bi₄O₅I₂ showed substantial improvement in photocatalytic H₂ production from 59.08 to 1050.93 μmol h^–1 g^–1. Furthermore, the S-scheme CsPbBr₃/Bi₄O₅I₂ heterojunction displays outstanding photocatalytic CO₂ to CO performance, compared to pure CsPbBr₃, from 2.84 to 83.6 μmol h^–1 g^–1. These findings contribute to the understanding and development of S-scheme heterojunction extraction of hot carriers in perovskite materials for photocatalytic applications.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 24","pages":"11988–11995 11988–11995"},"PeriodicalIF":5.4,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142870183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}