ACS Applied Energy Materials最新文献

{"title":"In Situ TiO2-Decorated SnS2 Nanoheterostructures for Enhanced Photocatalytic Hydrogen Generation","authors":"Niteen S. Jawale,&nbsp;Sudhir S. Arbuj*,&nbsp;Govind G. Umarji and Sunit B. Rane*,&nbsp;","doi":"10.1021/acsaem.4c0172410.1021/acsaem.4c01724","DOIUrl":"https://doi.org/10.1021/acsaem.4c01724https://doi.org/10.1021/acsaem.4c01724","url":null,"abstract":"<p >The synthesis of TiO₂-decorated SnS₂ nanosheets with varying concentrations of Ti from 5 to 20 mol % (5 mol %, 10 mol %, 15 mol %, and 20 mol %) was carried out, and their several physicochemical and photocatalytic characteristics were investigated. The hydrothermal method was utilized for the in situ synthesis of TiO₂ decorated on SnS₂ hexagonal nanosheets. The XRD indicates the formation of the highly crystalline hexagonal phase of SnS₂ and anatase phase of TiO₂. Further, the as-prepared TiO₂–SnS₂ nanophotocatalyst shows absorption behavior in the UV–visible region, and photoluminescence spectra of the TiO₂–SnS₂ nanostructures show band edge emission along with the peaks attributed to the defects. The formation of hexagonal SnS₂ sheets with uniformly dispersed TiO₂ nanoparticles and SnS₂ nanosheets is confirmed by the FE-SEM and FE-TEM. As TiO₂ loading increased, it was found that the BET surface area also improved. The photocatalytic activity of the synthesized TiO₂–SnS₂ nanosheets was assessed for hydrogen generation via water reduction under a 400 W mercury vapor lamp as the light source. Among the prepared TiO₂–SnS₂ nanostructures, the TiO₂ loaded with 15 mol % provides the maximum hydrogen generation, i.e., 2464.9 μmol/0.1gm in 4 h, nearly 2.8 times more than that of pristine SnS₂, i.e., 846.1 μmol/0.1gm. This demonstrates that TiO₂–SnS₂ could be an auspicious photocatalyst agent for H₂ production via water reduction. Moreover, the photocatalytic activity of the prepared nanostructures is also correlated with the photoconductivity by the photocurrent measurement. Higher the photocurrent, higher is the photocatalytic performance of the prepared nanostructures.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"10877–10887 10877–10887"},"PeriodicalIF":5.4,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850552","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":"High-Performance Flexible Symmetric Supercapacitor Device Based on Nitroaniline-Functionalized Benzoquinone","authors":"Sudhir D. Jagadale,&nbsp; and ,&nbsp;Sidhanath V. Bhosale*,&nbsp;","doi":"10.1021/acsaem.4c0176210.1021/acsaem.4c01762","DOIUrl":"https://doi.org/10.1021/acsaem.4c01762https://doi.org/10.1021/acsaem.4c01762","url":null,"abstract":"<p >A simple approach to design the molecular architecture based on modified benzoquinone and its flexible supercapacitor device is demonstrated. In present work, two electron-withdrawing subunits such as 2-nitroaniline (<b>NA</b>) and 3,5-dinitro aniline (<b>DNA</b>) are utilized to functionalize benzoquinone (<b>BQ</b>) core. As-prepared electrode materials based on <b>BQ-NA</b> and <b>BQ-DNA</b> on graphite foil (<b>GF</b>) are directly employed to fabricate a three-electrode supercapacitor (SC) device in 1 M H₂SO₄ electrolyte. At 0.5 A g^–1 current density, the <b>BQ-DNA/GF</b> electrode-based SC can deliver higher specific capacitance (<i>C</i>_sp) of 341.13 F g^–1 compared to the <b>BQ-NA/GF</b> SC device 322.47 F g^–1. This could be ascribed to the higher electron-withdrawing effect of the four –NO₂ groups in <b>BQ-DNA</b>. Moreover, two-electrode <b>BQ-DNA/GF//BQ-DNA/GF</b> symmetric SC device and flexible symmetric supercapacitor (SSC) device were created using the <b>GF</b> surface. The <b>BQ-DNA/GF</b>-based FSSC device at a 0° bending angle exhibits noticeable <i>C</i>_sp with 81.66% <i>C</i>_sp retention after 5000 cycles at 1 mA cm^–2 current density. The highest energy density of 12.81 μW h cm^–2 at 1.36 mW cm^–2 power density was achieved for FSSC. The FSSC cell configuration at 180° bending angle also retains excellent <i>C</i>_sp. The present work provides a way to design high-performance energy storage materials based on organic compounds for flexible electronics and wearable device architectures.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"10921–10937 10921–10937"},"PeriodicalIF":5.4,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850810","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":"NiCo2S4/MoS2 Composites for High-Performance Hybrid Supercapacitors","authors":"Jingyu Tian,&nbsp;Weili Qu,&nbsp;Rui Guo,&nbsp;Jing Liang and Xiaofeng Li*,&nbsp;","doi":"10.1021/acsaem.4c0196710.1021/acsaem.4c01967","DOIUrl":"https://doi.org/10.1021/acsaem.4c01967https://doi.org/10.1021/acsaem.4c01967","url":null,"abstract":"<p >Supercapacitors, as a novel energy storage technology, possess an excellent power density compared to batteries but a much lower energy density overall. Because of their special physicochemical characteristics, transition metal sulfides are thought to be viable options for electrode materials in electrochemical capacitors. Herein, we report NiCo₂S₄/MoS₂ micrometer flower arrays by a hydrothermal route. The samples used as cathodes exhibit a capacitance of 2110 F g^–1 when a current density of 1 A g^–1 is applied. The assembled NiCo₂S₄/MoS₂//AC presents an energy density of 67.275 Wh kg^–1 at a power density reaching 2721.23 W kg^–1. These devices still work stably even after folding various angles, demonstrating their wide applications in future wearable and portable devices.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"10998–11004 10998–11004"},"PeriodicalIF":5.4,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142842977","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":"A Manganese-Doped Cerium-Based Metal–Organic Framework as a Radical Scavenger for Proton Exchange Membrane Fuel Cells with Superior Stability","authors":"Henghui Huang*,&nbsp;Zihao Zhong,&nbsp;Jinming Li and Hui Li*,&nbsp;","doi":"10.1021/acsaem.4c0150210.1021/acsaem.4c01502","DOIUrl":"https://doi.org/10.1021/acsaem.4c01502https://doi.org/10.1021/acsaem.4c01502","url":null,"abstract":"<p >Reducing gas permeation through proton exchange membranes and eliminating free radicals are crucial for mitigating the degradation of proton exchange membranes. Here, a series of Mn-doped Ce metal–organic framework (MOF) materials are designed and prepared. Prepared Ce₂Mn-NH₂BDC can catalyze the decomposition of hydrogen oxidation and alleviate the damage caused by free radicals. Ce₂Mn-NH₂BDC has a special pore structure, a high specific surface area, and abundant functional groups, as well as the ability to be fixed in proton exchange membranes. The fabricated Ce₂Mn-NH₂BDC@PFSA membranes have excellent gas barrier properties and structural stability as well as an excellent proton conductivity, a high fuel cell performance, and low ohmic impedance. The proton conductivity can reach up to 137 mS cm^–1, and the cell performance can reach 0.664 V at 2.0 A cm^–2. In addition, the prepared composite membrane exhibits low weight loss and high water stability in the ex situ durability test, and it has excellent stability in the open circuit voltage (OCV) holding test; its decay rate is only 33.3 μ V h^–1, which is lower than those of Ce-NH₂BDC@PFSA and the Nafion 211 membrane. This work provides a promising reference value for the preparation of highly stable proton exchange membranes.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"10804–10814 10804–10814"},"PeriodicalIF":5.4,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142842814","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":"Morphology-Dependent Enhancement of Electrocatalytic Nitrogen Reduction Activity Using Iron Phthalocyanine Nanostructures","authors":"Sougata Sarkar,&nbsp;Nilmadhab Mukherjee,&nbsp;Sayed Julphukar Alli,&nbsp;Parnab Bhabak,&nbsp;Ashadul Adalder,&nbsp;Sourav Mukherjee,&nbsp;Ranjit Thapa* and Uttam Kumar Ghorai*,&nbsp;","doi":"10.1021/acsaem.4c0220410.1021/acsaem.4c02204","DOIUrl":"https://doi.org/10.1021/acsaem.4c02204https://doi.org/10.1021/acsaem.4c02204","url":null,"abstract":"<p >Ammonia is one of the most essential raw materials for daily life applications. As an alternative to the Haber–Bosch process, scientists are focusing on an important domain of electrocatalysis for ammonia production. Herein, we approached a morphological adaptation of the electrocatalyst (iron phthalocyanine, FePc) based on hollow nanotube and rod types; the catalyst showed different N₂-to-NH₃ productivity. Under ambient conditions, FePc nanorods showed a good ammonia yield rate and Faradaic efficiency (FE) of 323.44 μg h^–1 mg_cat.^–1 and 23.33%, respectively, at −0.4 V vs RHE in 0.05 M H₂SO₄. However, when the rod was adapted to a hollow nanotube structure by control of the temperature and time parameters, the ammonia productivity further improved. Under the same conditions, FePc nanotubes showed an excellent ammonia yield rate of 425.46 μg h^–1 mg_cat.^–1 and a corresponding FE of 23.61% at −0.4 V vs RHE. In addition to experimental observations, theoretical analysis using density functional theory is also provided to establish the reaction mechanism of ammonia synthesis from nitrogen reduction reaction (NRR) using an FePc electrocatalyst. This work opens an avenue showing geometric structural induction of electrocatalytic activity toward future sustainable ammonia production.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"11094–11102 11094–11102"},"PeriodicalIF":5.4,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843183","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":"A PVDF-HFP-Based Gel Polymer Electrolyte onto Air Cathode by UV-Curing for Lithium–Oxygen Batteries","authors":"Mingming Cui,&nbsp;Hong Sun*,&nbsp;Zhichao Xue,&nbsp;Qiang Li,&nbsp;Tianyu Zhang and Qunying Kang,&nbsp;","doi":"10.1021/acsaem.4c0264310.1021/acsaem.4c02643","DOIUrl":"https://doi.org/10.1021/acsaem.4c02643https://doi.org/10.1021/acsaem.4c02643","url":null,"abstract":"<p >Using gel polymer electrolytes (GPEs) instead of liquid electrolytes is a sensible and effective strategy for safety reasons. A GPE membrane was prepared by UV-curing using poly(vinylidene fluoride-<i>co</i>-hexafluoropropylene) (PVDF-HFP) as the polymer substrate material and an optimized ratio. The GPE membrane exhibited good flexibility and a higher ionic conductivity (σ = 0.63 mS cm^–1). The RuO₂@C/GPE/Li (abbreviated as S-GPE) battery is employed to demonstrate the electrochemical performance of GPE. The battery exhibits an <i>R</i>_ct of 255.9 Ω, accompanied by a lack of cycle stability, with a cycle life of only 110 h. The results indicate that it is challenging to enhance the battery’s overall performance by solely improving the internal transfer performance of the electrolyte and ignoring the high interface impedance caused by the “solid–solid” contact at the electrolyte–electrode interface. Based on these findings, a straightforward one-step method is adopted to combine GPE with the air cathode by <i>in situ</i> photopolymerization and assemble it into RuO₂@C-GPE/Li (abbreviated as I-GPE) battery used to demonstrate the electrochemical performance of the integrated GPE. The <i>R</i>_ct value of the battery is 89.66 Ω, with a notable improvement in cycle stability. The battery’s cycle life is 940 h, which is 8.5 times that of the sandwich structure lithium–oxygen battery. The results indicate that preparing an integrated GPE by <i>in situ</i> photopolymerization of the electrolyte electrode is a straightforward and effective method to improve poor interfacial compatibility and can provide a theoretical basis for subsequent in-depth research.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"11233–11239 11233–11239"},"PeriodicalIF":5.4,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843186","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":"Pore-Size Effect on Capacitive Energy Extraction from the Salinity Gradient with Porous Electrodes","authors":"Jingmin Zhou,&nbsp;Gang Jing,&nbsp;Jinhui Xie,&nbsp;Weiqiang Tang,&nbsp;Xiaofei Xu and Shuangliang Zhao*,&nbsp;","doi":"10.1021/acsaem.4c0201410.1021/acsaem.4c02014","DOIUrl":"https://doi.org/10.1021/acsaem.4c02014https://doi.org/10.1021/acsaem.4c02014","url":null,"abstract":"<p >The microscopic mechanisms through which the pore size of electrodes influences the extraction of salinity gradient energy via a capacitive double-layer expansion method remain not yet fully understood. Herein, we elucidate the relationship between the extracted energy and the pore size in the porous electrode using classical density functional theory. The influence of the pore size on energy, capacitance, and energy density is systematically explored, and a nonmonotonic relationship between the extracted energy and pore size is put forward, which indicates that maximum energy extraction can be attained with an optimal pore size. Moreover, we find that the optimal pore size grows when the operating voltage is enhanced, and the corresponding extraction energy is also raised. Further analysis reveals that the nonmonotonic dependence of energy extraction on the pore size stems from the distinct ion adsorption within nanoscale pores immersed in seawater versus freshwater solutions, and the optimal pore size can be determined empirically by the pore width at which ion adsorption onto the electrode surface in seawater just reaches its saturation. This study not only discloses the microscopic mechanism of pore size influencing energy extraction but also proposes a feasible approach to determining the optimal pore size.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"11011–11019 11011–11019"},"PeriodicalIF":5.4,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843034","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":"High-Performance Copolymerized Polycarbonate-Based Solid Electrolytes for Lithium Metal Batteries","authors":"Jing Xu,&nbsp;Yuting Hu,&nbsp;Mochun Zhang,&nbsp;Jialong Cao,&nbsp;Mengran Wang*,&nbsp;Bo Hong and Yanqing Lai,&nbsp;","doi":"10.1021/acsaem.4c0256410.1021/acsaem.4c02564","DOIUrl":"https://doi.org/10.1021/acsaem.4c02564https://doi.org/10.1021/acsaem.4c02564","url":null,"abstract":"<p >Polycarbonate-based solid electrolytes exhibit a high dielectric constant and remarkable oxidation resistance; nervertheless, their development is constrained by low room-temperature ionic conductivity and poor electrode compatibility. To overcome these challenges, a solid polymer electrolyte (PVT) was designed containing carbonate and fluorinated side chain structures through an in situ copolymerization strategy. This structure not only enhances lithium salt dissociation and ion migration but also forms a stable LiF interface on the lithium metal anode. The PVT electrolyte demonstratesa high ionic conductivity of 1.71 × 10^–4 S cm^–1 at 30 °C, surpassing that of PVE electrolyte (without F-containing chain segments, 1.23 × 10^–4 S cm^–1). The Li|PVT|Li cell can cycle for more than 1200 h at 0.1 mA cm^–2-0.1 mAh cm^–2, while the Li|PVE|Li cell operates for only 1000 h. Moreover, the capacity retention rate of Li|PVT|LFP cells remains above 80% after 200 cycles at 25 °C and 0.1C.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"10777–10783 10777–10783"},"PeriodicalIF":5.4,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142842956","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":"Interfacial Engineering for Enhanced Protonic Conduction in NaxCoO2−δ–Sm0.2Ce0.8O2−δ Semiconductor Ionic Heterostructures for Low-Temperature Solid Oxide Fuel Cells","authors":"Kalaimathi Sivanandam,&nbsp; and ,&nbsp;Suresh Babu Krishna Moorthy*,&nbsp;","doi":"10.1021/acsaem.4c0207710.1021/acsaem.4c02077","DOIUrl":"https://doi.org/10.1021/acsaem.4c02077https://doi.org/10.1021/acsaem.4c02077","url":null,"abstract":"<p >Interfacial engineering is pivotal in optimizing the ionic conductivity in semiconductor–ionic electrolytes for low-temperature solid oxide fuel cells (LT-SOFCs). In this study, we propose a semiconductor Na_<i>x</i>CoO_2−δ and ionic Sm_0.2Ce_0.8O_2−δ (SDC) heterostructure as a functional membrane sandwiched between two symmetric porous electrodes LiNi_0.8Co_0.15Al_0.05O_2−δ (NCAL). The A-site non-stoichiometry in Na_<i>x</i>CoO_2−δ modifies the energy band structure by altering the Co³⁺/Co⁴⁺ concentration, thereby regulating the conduction properties. Structural and electrical characterization of the heterostructure material was conducted to investigate heterointerfaces, oxygen vacancies, and their influence on charge carrier transportation. Electrochemical impedance spectroscopy demonstrated remarkable performance for Na_0.7CoO₂–SDC (NCO7–SDC), which exhibited an ionic conductivity of 0.132 S/cm at 550 °C under 3% H₂O humidified (4% H₂ + 96% N₂) conditions. Enhanced interfacial ionic transportation is attributed to the synergistic interplay of the Li⁺-rich space-charge layers, energy band alignment, and excess oxygen vacancies generated at the semiconductor–ionic interface along with the Schottky junction between the metallic Ni-electrode and heterostructure electrolyte. Our investigation further reveals that the optimal concentration of Na ions is crucial for inducing appropriate band bending and excess oxygen vacancy generation in Na_0.7CoO₂–SDC, to enhance the protonic conduction. XPS analysis of the hydrogen-exposed sample confirmed the dominant ionic conduction through the H⁺ and OH^– charge species. These findings emphasize the potential of Na_<i>x</i>CoO₂–SDC as a high-performance electrolyte for LT-SOFC, even with low-concentration H₂ fuel, paving the way for advancement in fuel cell technology.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"11060–11075 11060–11075"},"PeriodicalIF":5.4,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850540","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":"Phase-Transition-Induced Crack Formation in LiNi0.8Mn0.1Co0.1O2 Cathode Materials: A Comparative Study of Single-Crystalline and Polycrystalline Morphologies Using Operando X-ray CT","authors":"Xian Shi,&nbsp;Toshiki Watanabe*,&nbsp;Kentaro Yamamoto,&nbsp;Mukesh Kumar,&nbsp;Neha Thakur,&nbsp;Toshiyuki Matsunaga,&nbsp;Masanori Fujii,&nbsp;Hajime Kinoshita,&nbsp;Hideki Iba,&nbsp;Masayuki Nagamine,&nbsp;Kiyoshi Kanamura and Yoshiharu Uchimoto,&nbsp;","doi":"10.1021/acsaem.4c0234010.1021/acsaem.4c02340","DOIUrl":"https://doi.org/10.1021/acsaem.4c02340https://doi.org/10.1021/acsaem.4c02340","url":null,"abstract":"<p >Nickel-rich layered oxides, particularly LiNi_0.8Mn_0.1Co_0.1O₂ (NMC811), are considered some of the most promising candidates for next-generation battery cathode materials due to their high voltage, high capacity, and cost-effectiveness, which is attributed to the reduction in the cobalt content. However, nickel-rich layered materials suffer from significant capacity decay, especially at high voltages. Therefore, directly observing the crystal structure changes in NMC811 under high voltage and the growth of cracks is crucial for understanding the capacity decay mechanism in these materials. In the present study, we utilized synchrotron radiation technology to enable real-time tracking of lattice and morphological changes. Specifically, we performed high-resolution X-ray diffraction on two different forms of NMC811 (single crystalline and polycrystalline) under various delithiation states to analyze their crystal structure changes. Additionally, <i>operando</i> X-ray computed tomography tests were conducted to observe the morphological changes during charging and discharging.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"11144–11153 11144–11153"},"PeriodicalIF":5.4,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850571","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}