ACS Applied Energy Materials最新文献

{"title":"Suppressing Shunt and Trap-Assisted Recombination in Organic Photovoltaic Devices For Improved Indoor Light Harvesting Efficiency","authors":"Mengyang Li,&nbsp;Zheng Li,&nbsp;Ming Wang*,&nbsp;Zheng Tang* and Zaifei Ma*,&nbsp;","doi":"10.1021/acsaem.4c0227110.1021/acsaem.4c02271","DOIUrl":"https://doi.org/10.1021/acsaem.4c02271https://doi.org/10.1021/acsaem.4c02271","url":null,"abstract":"<p >Performance losses in indoor organic photovoltaic (OPV) devices, particularly those processed with nonhalogenated solvents, remain significant under weak illumination conditions, posing challenges for their integration with electronic technologies. In this study, the performance losses in indoor OPV devices processed with a nonhalogenated solvent are investigated. Indoor OPV devices based on the wide-bandgap acceptor F-BTA3, optimized to respond to the wavelength of white-light-emitting diode (LED) light, are constructed. It is found that device performance deteriorates as illumination intensity decreases below 1000 lx. Through device physics analysis, it is identified that the performance decline is primarily attributed to low shunt resistance (<i>R</i>_sh) and high trap state density. A solid additive strategy is then employed, and its impact on <i>R</i>_sh is examined, resulting in a reduction in the leakage current density (<i>J</i>_leak) and improved device performance under low illumination conditions. Additionally, a nonhalogenated solvent mixing method is developed, which, in combination with the solid additive strategy, enhances <i>R</i>_sh and reduces trap-assisted recombination losses, further improving device performance under low illumination conditions.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 24","pages":"11900–11909 11900–11909"},"PeriodicalIF":5.4,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142870094","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":"Improving the Electrochemical Performance of Ni-Rich LiNi0.8Co0.1Mn0.1O2 Cathodes by Suitable Sintering Temperature","authors":"Yanyan Li,&nbsp;Xiaobo Hong,&nbsp;Ping Jiang,&nbsp;Jianfei Tu,&nbsp;Zhijun Qiao* and Dianbo Ruan*,&nbsp;","doi":"10.1021/acsaem.4c0216510.1021/acsaem.4c02165","DOIUrl":"https://doi.org/10.1021/acsaem.4c02165https://doi.org/10.1021/acsaem.4c02165","url":null,"abstract":"<p >Ni-rich layered LiNi_<i>x</i>Co_<i>y</i>Mn_<i>z</i>O₂ (NCM, <i>x</i> ≥ 0.6) is one of the most competitive cathode materials due to its high energy density. However, its fast capacity fading, high voltage instability, serious parasitic reactions, phase transitions, and loss of active substances hinder further large-scale applications. In this work, we used the highest sintering temperature for LiNi_0.8Co_0.1Mn_0.1O₂ material (named NCM811). NCM811-800 °C which was sintered at 800 °C for 10 h significantly enhanced the materials’ structural stability due to the suppression of the cathode materials degradation during cycling. Correspondingly, NCM811-800 °C shows the best electrochemical performance among four samples, ∼81.3% (161.6 mAh/g) with a rate of 0.5C after 200 cycles, much higher than that of the worst sample NCM811-750 °C, only remaining 89.1 mAh/g (about 48.2% capacity retention). Meanwhile, the rate capacity of NCM811-800 °C also presents superior stability (97.6, 89.9, 81.1, and 43.6% under 0.1, 0.5, 1, 2, and 5C) with improving the structural stability of cathodes. Our work provides a practical method to improve the electrochemical properties of Ni-rich layered structure cathode by suitable sintering temperature.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 24","pages":"11827–11833 11827–11833"},"PeriodicalIF":5.4,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142870095","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":"Cu8S5/PDA@SA Hydrogel: A Synergistic Photothermal and Photocatalytic Approach for Efficient Solar Steam Sterilization","authors":"Miao Yu,&nbsp;Yuhang Wang,&nbsp;Yihan Liu,&nbsp;Yanxia Wang,&nbsp;Yunfeng Qiu*,&nbsp;Zhuo Ma,&nbsp;Youshan Wang* and Shaoqin Liu*,&nbsp;","doi":"10.1021/acsaem.4c0265210.1021/acsaem.4c02652","DOIUrl":"https://doi.org/10.1021/acsaem.4c02652https://doi.org/10.1021/acsaem.4c02652","url":null,"abstract":"<p >Solar absorbers play a crucial role in interfacial solar steam generation (ISSG) technology, facilitating efficient steam generation and sterilization. Nonetheless, limitations in solar conversion efficiency and water transport effects, coupled with challenges in outdoor portability of traditional installations, have hindered the progress in steam sterilization technology. In this work, based on Cu₈S₅/PDA nanoparticles (NPs) and sodium alginate (SA) hydrogel, a solar steam sterilization absorber with superior photothermal conversion and antibacterial properties was developed. The Cu₈S₅/PDA@SA hydrogel synthesized via in situ deposition demonstrated remarkable full-spectrum absorption performance and stable photothermal conversion ability (37.56%), capable of effectively destroying bacterial structure and metabolic functions through multiple therapeutic mechanisms: photothermal therapy via thermal effect of high temperature and chemodynamic and photodynamic therapies via oxidation of reactive oxygen species and depletion of intracellular glutathione, achieving 100% steam antibacterial efficiency and presenting excellent antibacterial potential under low irradiation conditions. This study proposes a promising avenue for the development of environmentally friendly and easy-to-use solar steam sterilizers for off-grid conditions.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"11240–11252 11240–11252"},"PeriodicalIF":5.4,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851002","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":"Dimeric BODIPY Donors Based on the Donor–Acceptor Structure for All-Small-Molecule Organic Solar Cells","authors":"Le Wang,&nbsp;Minhao Zhu,&nbsp;Tingting Gu,&nbsp;Xu Liang,&nbsp;Sarvesh Kumar Pandey,&nbsp;Haijun Xu*,&nbsp;Rahul Singhal and Ganesh D. Sharma*,&nbsp;","doi":"10.1021/acsaem.4c0242510.1021/acsaem.4c02425","DOIUrl":"https://doi.org/10.1021/acsaem.4c02425https://doi.org/10.1021/acsaem.4c02425","url":null,"abstract":"<p >Herein, we have designed and synthesized two dimeric BODIPY consisting of a donor–acceptor backbone, in which electron-withdrawing groups of penta-fluorophenyl were introduced at the <i>meso</i>-position of the BODIPY core and different electron-donating groups of triphenylamine (<b>ZMH-3</b>) and carbazole (<b>ZMH-4</b>) groups were introduced at the 3,5-positions of BODIPY moieties. Both <b>ZMH-3</b> and <b>ZMH-4</b> showed optical band gaps of 1.49 and 1.39 eV, with deeper highest occupied molecular orbital energy levels of −5.61 and −5.59 eV, respectively. Moreover, the dipole moments of <b>ZMH-3</b> and <b>ZMH-4</b>, estimated from DFT simulations, are 5.065 and 4.49 D, respectively, indicating that the excitons generated in the <b>ZMH-3</b> exist with lower binding energy, which is beneficial for the efficient exciton dissociation. Considering these optical and energy levels, we have selected the nonfullerene acceptor ITIC (complementary absorption spectra and suitable energy levels) as the acceptor. After the optimization, the organic solar cells based on <b>ZMH-3</b> and <b>ZMH-4</b> attained power conversion efficiencies of about 12.26 and 8.23%, respectively. The enhanced value of power conversion efficiency for the <b>ZMH-3-</b>based OSCs is attributed to the efficient exciton dissociation efficiency, more efficient charge transport and extraction, and suppressed charge recombination.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"11195–11205 11195–11205"},"PeriodicalIF":5.4,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142851001","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":"Fabrication of a Two-Dimensional Heterostructured MoS2-RGO Nanocomposite for Enhanced Photocatalytic Hydrogen Evolution","authors":"Murthy Muniyappa,&nbsp;Navya Rani Marilingaiah*,&nbsp;Manjunath Shetty,&nbsp;Mahesh Shastri,&nbsp;Manikanta Palya Narayanaswamy,&nbsp;Takaaki Tomai,&nbsp;Akira Yoko,&nbsp;Karunakar Rai,&nbsp;H. J. Yashwanth and Dinesh Rangappa*,&nbsp;","doi":"10.1021/acsaem.4c0222810.1021/acsaem.4c02228","DOIUrl":"https://doi.org/10.1021/acsaem.4c02228https://doi.org/10.1021/acsaem.4c02228","url":null,"abstract":"<p >The photocatalytic hydrogen evolution based on photocatalytic water splitting is a promising pathway for sustainable hydrogen production. The development of highly active, structurally stable materials with shorter-duration synthesis techniques is the key issue. In this work, nanostructured MoS₂-RGO heterostructures were synthesized through a one-step rapid supercritical water process. The synthesized MoS₂-RGO (5%) sample exhibits 25 mmol g^–1 h^–1 H₂ generation, which can be considered as the highest photocatalytic activity. The addition of the RGO renders the formation of a two-dimensional heterostructure which reduces the charge recombination, as well as enhanced conductivity of the samples, that results in efficient hydrogen production with good repeatability up to 5 cycles. The main reason could be the high structural stability and fast transport of charge carriers to split water molecules into H₂. This rapid ultrafast synthesis by using supercritical water is suitable for the mass production of molybdenum dichalcogenide-based photocatalysts for hydrogen generation.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"11103–11112 11103–11112"},"PeriodicalIF":5.4,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850647","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":"Impact of Synthetic Parameters on Structure and Electrochemistry of High-Entropy Layered Oxide LiNi0.2Co0.2Mn0.2Al0.2Fe0.2O2","authors":"Marie F. Millares,&nbsp;Jessica Luo,&nbsp;Zachary Mansley,&nbsp;Cynthia Huang,&nbsp;Patrick J. Barry,&nbsp;Alexis Pace,&nbsp;Lei Wang,&nbsp;David C. Bock,&nbsp;Lu Ma,&nbsp;Steven N. Ehrlich,&nbsp;Yimei Zhu,&nbsp;Esther S. Takeuchi,&nbsp;Amy C. Marschilok,&nbsp;Shan Yan* and Kenneth J. Takeuchi*,&nbsp;","doi":"10.1021/acsaem.4c0223510.1021/acsaem.4c02235","DOIUrl":"https://doi.org/10.1021/acsaem.4c02235https://doi.org/10.1021/acsaem.4c02235","url":null,"abstract":"<p >This study explored a high-entropy layered oxide (HELO), LiNi_0.2Co_0.2Mn_0.2Al_0.2Fe_0.2O₂, prepared by coprecipitation followed by heat treatment. Coprecipitation yielded a kinetically favored product, and the subsequent heat treatment under various temperatures and times allowed tuning the material toward more thermodynamically favored structures. Refinement of X-ray powder diffraction (XRD) revealed that after 450 °C treatment, ∼12% of the Ni²⁺ in the structure was located within the lithium cation layer. After heat treatment at 600, 700, and 800 °C, there was a continued decrease of Ni²⁺ in the lithium cation layer to 9.3, 6.3, and 3.7%, respectively. Longer heat treatment times at 800 °C decreased the level to 2.5%. Electrochemical behavior was evaluated by cyclic voltammetry, galvanostatic cycling, rate capability testing, and electrochemical impedance spectroscopy, where increased loaded voltage, functional capacity, rate capability, and decreased impedance were observed for samples treated at higher temperatures with lower cation mixing. X-ray absorption near edge spectroscopy (XANES) data indicated that the redox activity of Ni and Co was dominant in the electrochemistry, while the participation of Mn or Fe was minimal. The level of Ni oxidation state change between charge and discharge related to the heat treatment temperature where the samples with high cation mixing showed lower capacity consistent with some Ni³⁺ in the transition metal layer inaccessible for electron transfer. Longer heat treatment times at 800 °C did not continue to provide a benefit in electrochemical function even with some additional reduction in cation mixing.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"11113–11125 11113–11125"},"PeriodicalIF":5.4,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843872","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":"Hybrid Chemical Vapor Deposition of Mixed-Cation MAxFA1–xPbI3-yBry Perovskites via Lead Bromide Doping for High-Performance Photovoltaic Devices","authors":"Tingyan Huang,&nbsp;Yu Zhang,&nbsp;Jia Sun,&nbsp;Yinsheng Gu,&nbsp;Fang Wang,&nbsp;Ying-Wei Lu and Paifeng Luo*,&nbsp;","doi":"10.1021/acsaem.4c0258410.1021/acsaem.4c02584","DOIUrl":"https://doi.org/10.1021/acsaem.4c02584https://doi.org/10.1021/acsaem.4c02584","url":null,"abstract":"<p >In recent years, there has been some interest in the use of chemical vapor deposition (CVD) for the fabrication of perovskite solar cells (PSCs) due to its satisfactory film-quality, high controllability and consistency, low equipment cost, and easy industrial scale-up. In this paper, the mixed-cation MA_<i>x</i>FA_1–<i>x</i>PbI_3–<i>y</i>Br_<i>y</i> perovskite light absorbing films were first deposited via a lead bromide (PbBr₂) precursor doped CVD process, and the effect of bromine content on its material phase composition, film morphology, optical band gap, device photovoltaic characteristic, charge recombination, and carrier transport property were systematically studied. The experimental results show that introducing an appropriate PbBr₂ doping amount can inhibit the formation of undesirable nonphotoactive γ phase, which enhances the crystallization ability, increases the grain size and material band gap of perovskite films, and then suppresses the carrier recombination, reduces the contact resistance, and facilitates the carrier extraction and transport at the interface. This ultimately leads to an improvement in the power conversion efficiency (PCE) and stability of the PSCs. Consequently, the optimized MA_<i>x</i>FA_1–<i>x</i>PbI_3–<i>y</i>Br_<i>y</i> PSCs with 0.05 M PbBr₂ doping achieve an impressive PCE of 17.94%, which is significantly higher than that of the undoped devices (16.69%) and reaches the high level of PSCs with a hybrid chemical vapor deposition (HCVD) method.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"11225–11232 11225–11232"},"PeriodicalIF":5.4,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843398","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":"Multinonmetal-Doped V2O5 Nanocomposites for Lithium-Ion Battery Cathodes","authors":"Yikang Yu,&nbsp;Guangqi Zhu,&nbsp;Qi Zhang,&nbsp;Mohammad Behzadnia,&nbsp;Zhenzhen Yang,&nbsp;Yuzi Liu and Jian Xie*,&nbsp;","doi":"10.1021/acsaem.4c0204310.1021/acsaem.4c02043","DOIUrl":"https://doi.org/10.1021/acsaem.4c02043https://doi.org/10.1021/acsaem.4c02043","url":null,"abstract":"<p >Lithium-ion batteries (LIBs) are critical for portable electronics and electric vehicles, demanding higher energy density to meet increasing energy storage needs. Current commercial cathode materials, such as LiFePO₄ and LiCoO₂, are limited by a single electron transfer, restricting their energy density. Vanadium pentoxide (V₂O₅) emerges as a promising high-capacity cathode due to its high theoretical capacity of 443 mA h g^–1 with three Li storage capacities, significantly surpassing conventional materials. However, the practical application of V₂O₅ is hindered by a large structural evolution and rapid capacity fading during full lithium intercalation. This study introduces a multinonmetal doping (MNM) strategy to enhance V₂O₅ cathodes by incorporating all-nonmetal dopants (B, P, and Si) and graphene (G). MNM-V₂O₅-G exhibits increased surface oxygen defects, improving charge transfer kinetics and thus enhancing the rate performance and cycling stability. Our results provide valuable insights into the role of surface oxygen defects in stabilizing V₂O₅ with element doping. This research highlights the potential of multinonmetal doping to improve LIB cathode materials, offering a promising pathway for design of high-energy-density V₂O₅ cathodes and advancing the development of next-generation energy storage solutions.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"11031–11037 11031–11037"},"PeriodicalIF":5.4,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843964","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":"Surface Treatment via a Multifluorine-Containing Passivator for High-Performance Inorganic Perovskite Solar Cells","authors":"Panli Zhang,&nbsp;Zezhang Wang,&nbsp;Tianfei Xu,&nbsp;Nan Li,&nbsp;Shengzhong Liu,&nbsp;Wanchun Xiang* and Xing Zhang*,&nbsp;","doi":"10.1021/acsaem.4c0172210.1021/acsaem.4c01722","DOIUrl":"https://doi.org/10.1021/acsaem.4c01722https://doi.org/10.1021/acsaem.4c01722","url":null,"abstract":"<p >Metal-halide inorganic perovskites have gained great interest due to their excellent thermal stability and adjustable bandgaps for fabricating tandem solar cells. However, challenges such as significant nonradiative recombination by perovskite interfacial defects and unpleasant moisture stability have forced further improvements in the power conversion efficiency (PCE) and stability of inverted inorganic perovskite solar cells (PSCs). Herein, 3,5-bis(trifluoromethyl)benzylamine (TFBA) as a surface modifier was used to achieve these goals. It was found that the amino group in TFBA can provide electrons to coordinate with the undercoordinated Pb²⁺ on the surface of inorganic perovskite, thus mitigating surface defects. Moreover, TFBA contains two trifluoromethyl groups with hydrophobic properties, which can effectively prevent moisture from intrusion. Consequently, TFBA treatment resulted in remarkable improvement of the device open-circuit voltage by 110 mV, leading to a PCE of 20.4% under 100 mW cm^–2 illumination, superior to that of the control cell (17.8%). The unencapsulated devices without treatment and treatment with TFBA can preserve their initial PCEs of 65 and 90%, respectively, after aging for 1150 h under ambient conditions.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"10888–10896 10888–10896"},"PeriodicalIF":5.4,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142850602","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":"Biomass-Derived Carbon-Coated FeCo Alloys as Highly Efficient Bifunctional Electrocatalyst for Rechargeable Zinc–Air Batteries","authors":"Kangdi Lin,&nbsp;Meijie Chen,&nbsp;Zihao Zhou,&nbsp;Hongyun Huang,&nbsp;Jinlian Zhang,&nbsp;Shaomin Peng,&nbsp;Ming Sun and Lin Yu*,&nbsp;","doi":"10.1021/acsaem.4c0243210.1021/acsaem.4c02432","DOIUrl":"https://doi.org/10.1021/acsaem.4c02432https://doi.org/10.1021/acsaem.4c02432","url":null,"abstract":"<p >The development of highly effective bifunctional electrocatalysts for the oxygen reduction (ORR) and evolution reactions (OERs) is pivotal for the advancement of rechargeable zinc–air batteries (ZABs) with superior electrochemical performance. This study presents a facile strategy for the synthesis of a biomass-derived nitrogen-doped carbon-coated FeCo catalyst. By optimizing the calcination temperature, the FeCo@NC-900, synthesized at 900 °C, demonstrates superior ORR/OER performance, with a half-wave potential of 0.81 V for ORR and an overpotential of 349 mV to drive a current density of 10 mA cm^–2 for OER. Electrochemical testing of ZABs employing FeCo@NC-900 as electrode catalysts reveals excellent performance, with a peak power density of 103.6 mW cm^–2 at 160 mA cm^–2 and sustains operation for over 300 h at a current density of 5 mA cm^–2 with superior cycling stability. These results surpass those of the Pt/C-RuO₂-based counterpart. Given its low cost and straightforward preparation, FeCo@NC-900 emerges as a highly promising catalyst for energy storage and conversion applications.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"7 23","pages":"11172–11183 11172–11183"},"PeriodicalIF":5.4,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142843874","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}