Journal of Energy Chemistry最新文献_第2页

Sulfur atom occupying surface oxygen vacancy to boost the charge transfer and stability for aqueous Bi2O3 electrode 硫原子占据表面氧空位，促进水性 Bi2O3 电极的电荷转移和稳定性

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2024-10-22 DOI: 10.1016/j.jechem.2024.10.012

Guangmin Yang , Jianyan Lin , Guanwu Li , Tian Li , Dong Wang , Weitao Zheng

{"title":"Sulfur atom occupying surface oxygen vacancy to boost the charge transfer and stability for aqueous Bi2O3 electrode","authors":"Guangmin Yang , Jianyan Lin , Guanwu Li , Tian Li , Dong Wang , Weitao Zheng","doi":"10.1016/j.jechem.2024.10.012","DOIUrl":"10.1016/j.jechem.2024.10.012","url":null,"abstract":"<div><div>Oxygen vacancies (Ov) within metal oxide electrodes can enhance mass/charge transfer dynamics in energy storage systems. However, construction of surface Ov often leads to instability in electrode structure and irreversible electrochemical reactions, posing a significant challenge. To overcome these challenges, atomic heterostructures are employed to address the structural instability and enhance the mass/charge transfer dynamics associated with phase conversion mechanism in aqueous electrodes. Herein, we introduce an atomic S–Bi2O3 heterostructure (sulfur (S) anchoring on the surface Ov of Bi2O3). The integration of S within Bi2O3 lattice matrix triggers a charge imbalance at the heterointerfaces, ultimately resulting in the creation of a built-in electric field (BEF). Thus, the BEF attracts OH− ions to be adsorbed onto Bi within the regions of high electron cloud overlap in S–Bi2O3, facilitating highly efficient charge transfer. Furthermore, the anchored S plays a pivotal role in preserving structural integrity, thus effectively stabilizing the phase conversion reaction of Bi2O3. As a result, the S–Bi2O3 electrode achieves 72.3 mA h g−1 at 10 A g−1 as well as high-capacity retention of 81.9% after 1600 cycles. Our innovative S–Bi2O3 design presents a groundbreaking approach for fabricating electrodes that exhibit efficient and stable mass and charge transfer capabilities. Furthermore, it enhances our understanding of the underlying reaction mechanism within energy storage electrodes.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"101 ","pages":"Pages 751-759"},"PeriodicalIF":13.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664086","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}

引用次数: 0

Cu3.21Bi4.79S9: Bimetal superionic strategy boosts ultrafast dynamics for Na-ion storage/extraction Cu3.21Bi4.79S9：双金属超离子策略提升了纳离子存储/萃取的超快动力学性能

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2024-10-22 DOI: 10.1016/j.jechem.2024.09.061

Xu Han , Guoping Liu , Weiqiang Kong , Wenruo Li , Shun Liu , Luzheng Zhao , Haoyuan Zhu , Jiancong Guo , Zhongsheng Wen

{"title":"Cu3.21Bi4.79S9: Bimetal superionic strategy boosts ultrafast dynamics for Na-ion storage/extraction","authors":"Xu Han , Guoping Liu , Weiqiang Kong , Wenruo Li , Shun Liu , Luzheng Zhao , Haoyuan Zhu , Jiancong Guo , Zhongsheng Wen","doi":"10.1016/j.jechem.2024.09.061","DOIUrl":"10.1016/j.jechem.2024.09.061","url":null,"abstract":"<div><div>Traditional metal sulfides used as anodes for sodium-ion batteries are hindered by sluggish kinetics, which limits their rate performance. Previous attempts to address this issue focused on nanostructured configurations with conductive frameworks. However, these nanomaterials often suffer from low packing density and the tendency for nanoparticles to agglomerate, posing significant challenges for practical applications. To overcome these limitations, this study presents a novel bimetal superionic anode material Cu3.21Bi4.79S9, which effectively resolves the conflict between sluggish kinetics and micrometer-scale particle size. By leveraging the vacancies created by free Cu and Bi atoms, this material forms rapid migration channels during sodium insertion and extraction, significantly reducing the migration barriers for sodium ions. The development of micrometer-scale Cu3.21Bi4.79S9 enables ultrafast charging-discharging capabilities, achieving a reversible capacity of 325.5 mAh g−1 after 4000 cycles at a high rate of 45 C (15 A g−1). This work marks a significant advancement in the field by offering a solution to the inherent trade-off between high capacity and rate performance in coarse-grained materials, reducing the need for reliance on nanostructured configurations for next-generation high-capacity anode materials.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"101 ","pages":"Pages 769-777"},"PeriodicalIF":13.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664099","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}

引用次数: 0

Efficient and stable hydrogen evolution and antibiotic degradation in all-pH-scale water/alkaline seawater using Fe-Co phosphide hollow nanocages fabricated from metallurgical solid waste 利用冶金固体废弃物制备的磷化铁-钴空心纳米笼在全 PH 级水/碱性海水中实现高效稳定的氢进化和抗生素降解

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2024-10-22 DOI: 10.1016/j.jechem.2024.09.064

Zekun Zhao , Suqin Li , Yongkui Li , Qingqing Xia , Haiping Lei , Hao Zhang , Shuqiang Jiao

{"title":"Efficient and stable hydrogen evolution and antibiotic degradation in all-pH-scale water/alkaline seawater using Fe-Co phosphide hollow nanocages fabricated from metallurgical solid waste","authors":"Zekun Zhao , Suqin Li , Yongkui Li , Qingqing Xia , Haiping Lei , Hao Zhang , Shuqiang Jiao","doi":"10.1016/j.jechem.2024.09.064","DOIUrl":"10.1016/j.jechem.2024.09.064","url":null,"abstract":"<div><div>The utilization of seawater, a plentiful and cost-effective resource, instead of freshwater for H2 production through electrolysis has garnered significant attention. Herein, we present the synthesis of open-structured Fe-Co phosphide (FCP) nanocages for the overall seawater electrolysis, employing metallurgical solid waste (steel rolling sludge, SRS) as the precursor material. The FCP nanocages demonstrate exceptional catalytic activity for the hydrogen evolution reaction (HER) in all pH scales, achieving performance comparable to that of Pt/C catalysts at high current densities. The electrolyzer assembled with FCP||FCP requires 1.57 and 1.68 V to achieve current densities of 10 and 100 mA cm−2, respectively. Furthermore, the assembled FCP electrolyzer showcases over 100 h of cycling stability and nearly 100% Faradaic efficiency. Crucially, it can be powered by commercially available silicon solar panels, operating under an intensity of 100 mW cm−2, and by wind-driven sources, rendering it highly promising for real-world applications. The seawater hydrogen evolution system coupled with levofloxacin (LEV) degradation was constructed for the first time. The oxidation potential of LEV oxidation reaction (LEVOR) was significantly lower than that of oxygen evolution reaction (OER), indicating that the LEV degradation reaction occurred preferentially and achieved a removal efficiency of 98.57% within 60 min. This study provides effective strategies for valorizing SRS and offers insights into the fabrication of high-performance catalysts.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"101 ","pages":"Pages 661-675"},"PeriodicalIF":13.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594019","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}

引用次数: 0

Electronic interactions between neighboring functionalized guest Sb single atoms and Pt clusters enhance CO tolerance 相邻功能化客体锑单原子与铂团簇之间的电子相互作用增强了对一氧化碳的耐受性

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2024-10-22 DOI: 10.1016/j.jechem.2024.10.013

Wenkang Miao , Ronghui Hao , Lu Gan , Wanyin Xu , Zihan Wang , Wenxin Lin , Heguang Liu , Yinchun Lyu , Qianqian Li , Jinyang Xi , Anmin Nie , Jinsong Wu , Hongtao Wang

{"title":"Electronic interactions between neighboring functionalized guest Sb single atoms and Pt clusters enhance CO tolerance","authors":"Wenkang Miao , Ronghui Hao , Lu Gan , Wanyin Xu , Zihan Wang , Wenxin Lin , Heguang Liu , Yinchun Lyu , Qianqian Li , Jinyang Xi , Anmin Nie , Jinsong Wu , Hongtao Wang","doi":"10.1016/j.jechem.2024.10.013","DOIUrl":"10.1016/j.jechem.2024.10.013","url":null,"abstract":"<div><div>Platinum-based (Pt) catalysts are notoriously susceptible to deactivation in industrial chemical processes due to carbon monoxide (CO) poisoning. Overcoming this poisoning deactivation of Pt-based catalysts while enhancing their catalytic activity, selectivity, and durability remains a major challenge. Herein, we propose a strategy to enhance the CO tolerance of Pt clusters (Ptn) by introducing neighboring functionalized guest single atoms (such as Fe, Co, Ni, Cu, Sb, and Bi). Among them, antimony (Sb) single atoms (SAs) exhibit significant performance enhancement, achieving 99% CO selectivity and 33.6% CO2 conversion at 450 °C. Experimental results and density functional theory (DFT) calculations indicate the optimization arises from the electronic interaction between neighboring functionalized Sb SAs and Pt clusters, leading to optimal 5d electron redistribution in Pt clusters compared to other functionalized guest single atoms. The redistribution of 5d electrons weaken both the σ donation and π backdonation interactions, resulting in a weakened bond strength with CO and enhancing catalyst activity and selectivity. In situ environmental transmission electron microscopy (ETEM) further demonstrates the exception thermal stability of the catalyst, even under H2 at 700 °C. Notably, the functionalized Sb SAs also improve CO tolerance in various heterogenous catalysts, including Co/CeO2, Ni/CeO2, Pt/Al2O3, and Pt/CeO2-C. This finding provides an effective approach to overcome the primary challenge of CO poisoning in Pt-based catalysts, making their broader applications in various industrial catalysts.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"101 ","pages":"Pages 733-743"},"PeriodicalIF":13.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664083","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}

引用次数: 0

Effective stress dissipation by multi-dimensional architecture engineering for ultrafast and ultralong sodium storage 通过多维结构工程有效消散应力，实现超快和超长钠储存

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2024-10-22 DOI: 10.1016/j.jechem.2024.10.008

Man Zhang , Jing Zhu , Qianqian Li , Fenghua Zheng , Sijiang Hu , Youguo Huang , Hongqiang Wang , Xing Ou , Qichang Pan , Qingyu Li

{"title":"Effective stress dissipation by multi-dimensional architecture engineering for ultrafast and ultralong sodium storage","authors":"Man Zhang , Jing Zhu , Qianqian Li , Fenghua Zheng , Sijiang Hu , Youguo Huang , Hongqiang Wang , Xing Ou , Qichang Pan , Qingyu Li","doi":"10.1016/j.jechem.2024.10.008","DOIUrl":"10.1016/j.jechem.2024.10.008","url":null,"abstract":"<div><div>Stress accumulation is a key factor leading to sodium storage performance deterioration for NiSe2-based anodes. Therefore, inhibiting the concentrated local stress during the sodiataion/desodiation process is crucial for acquiring stable NiSe2-based materials for sodium-ion batteries (SIBs). Herein, a stress dissipation strategy driven by architecture engineering is proposed, which can achieve ultrafast and ultralong sodium storage properties. Different from the conventional sphere-like or rod-like architecture, the three-dimensional (3D) flower-like NiSe2@C composite is delicately designed and assembled with one-dimensional nanorods and carbon framework. More importantly, the fundamental mechanism of improved structure stability is unveiled by simulations and experimental results simultaneously. It demonstrates that this designed multidimensional flower-like architecture with dispersed nanorods can balance the structural mismatch, avoid concentrated local strain, and relax the internal stress, mainly induced by the unavoidable volume variation during the repeated conversion processes. Moreover, it can provide more Na+-storage sites and multi-directional migration pathways, leading to a fast Na+-migration channel with boosted reaction kinetic. As expected, it delivers superior rate performance (441 mA h g−1 at 5.0 A g−1) and long cycling stability (563 mA h g−1 at 1.0 A g−1 over 1000 cycles) for SIBs. This work provides useful insights for designing high-performance conversion-based anode materials for SIBs.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"101 ","pages":"Pages 619-629"},"PeriodicalIF":13.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594083","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}

引用次数: 0

Quantification of solvent-mediated host-ion interaction in graphite intercalation compounds for extreme-condition Li-ion batteries 量化极端条件下锂离子电池石墨插层化合物中溶剂介导的宿主离子相互作用

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2024-10-22 DOI: 10.1016/j.jechem.2024.10.014

Jia-Zhen Zhao , Fu-Da Yu , Ji-Huai Wu , Zhang Lan , Yi-Ming Xie , Le-Qing Fan , Lan-Fang Que , Zhen-Bo Wang

{"title":"Quantification of solvent-mediated host-ion interaction in graphite intercalation compounds for extreme-condition Li-ion batteries","authors":"Jia-Zhen Zhao , Fu-Da Yu , Ji-Huai Wu , Zhang Lan , Yi-Ming Xie , Le-Qing Fan , Lan-Fang Que , Zhen-Bo Wang","doi":"10.1016/j.jechem.2024.10.014","DOIUrl":"10.1016/j.jechem.2024.10.014","url":null,"abstract":"<div><div>Achieving simultaneous fast-charging capabilities and low-temperature adaptability in graphite-based lithium-ion batteries (LIBs) with an acceptable cycle life remains challenging. Herein, an ether-based electrolyte with temperature-adaptive Li+ solvation structure is designed for graphite, and stable Li+/solvent co-intercalation has been achieved at subzero. As revealed by in-situ variable temperature (−20 °C) X-ray diffraction (XRD), the poor compatibility of graphite in ether-based electrolyte at 25 °C is mainly due to the continuous electrolyte decomposition and the in-plane rearrangement below 0.5 V. Former results in a significant irreversible capacity, while latter maintains graphite in a prolonged state of extreme expansion, ultimately leading to its exfoliation and failure. In contrast, low temperature triggers the rearrangement of Li+ solvation structure with stronger Li+/solvent binding energy and shorter Li+–O bond length, which is conducive for reversible Li+/solvent co-intercalation and reducing the time of graphite in an extreme expansion state. In addition, the co-intercalation of solvents minimizes the interaction between Li-ions and host graphite, endowing graphite with fast diffusion kinetics. As expected, the graphite anode delivers about 84% of the capacity at room temperature at −20 °C. Moreover, within 6 min, about 83%, 73%, and 43% of the capacity could be charged at 25, −20, and −40 °C, respectively.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"101 ","pages":"Pages 723-732"},"PeriodicalIF":13.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663937","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}

引用次数: 0

Electronic modulation towards MOFs as template derived CoP via engineered heteroatom defect for a highly efficient overall water splitting 通过设计杂原子缺陷对作为模板衍生 CoP 的 MOFs 进行电子调制，实现高效整体水分离

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2024-10-22 DOI: 10.1016/j.jechem.2024.10.010

Meijie Ding , Zhiqiang Wei , Dexue Liu , Wenhua Zhao , Qiang Lu , Zhiming Li , Qingsong Yu , Chenggong Lu , Hua Yang

{"title":"Electronic modulation towards MOFs as template derived CoP via engineered heteroatom defect for a highly efficient overall water splitting","authors":"Meijie Ding , Zhiqiang Wei , Dexue Liu , Wenhua Zhao , Qiang Lu , Zhiming Li , Qingsong Yu , Chenggong Lu , Hua Yang","doi":"10.1016/j.jechem.2024.10.010","DOIUrl":"10.1016/j.jechem.2024.10.010","url":null,"abstract":"<div><div>The reasonable design of material morphology and eco-friendly electrocatalysts are essential to highly efficient water splitting. It is proposed that a promising strategy effectively regulates the electronic structure of the d‐orbitals of CoP using cerium doping in this paper, thus significantly improving the intrinsic property and conductivity of CoP for water splitting. As a result, the as-synthesize porous Ce-doped CoP micro-polyhedron composite derived from Ce-ZIF-67 as bifunctional electrocatalytic materials exhibits excellent electrocatalytic performance in both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER), overpotentials of about 152 mV for HER at 10 mA cm−2 and about 352 mV for OER at 50 mA cm−2, and especially it shows outstanding long-term stability. Besides, an alkaline electrolyzer, using Ce0.04Co0.96P electrocatalyst as both the anode and cathode, delivers a cell voltage value of 1.55 V at the current density of 10 mA cm−2. The calculation results of the density functional theory (DFT) demonstrate that the introduction of an appropriate amount of Ce into CoP can enhance the conductivity, and can induce the electronic modulation to regulate the selective adsorption of reaction intermediates on catalytic surface and the formation of O* intermediates (CoOOH), which exhibits an excellent electrocatalytic performance. This study provides novel insights into the design of an extraordinary performance water-splitting of the multicomponent electrocatalysts.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"101 ","pages":"Pages 598-607"},"PeriodicalIF":13.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571454","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}

引用次数: 0

Tailoring BaCe0.7Zr0.1(Dy0.1|Yb0.1)0.2O3−δ electrolyte through strategic Cu doping for low temperature proton conducting fuel cells: Envisioned theoretically and experimentally 通过策略性掺铜为低温质子传导燃料电池定制 BaCe0.7Zr0.1(Dy0.1|Yb0.1)0.2O3-δ电解质：理论和实验设想

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2024-10-22 DOI: 10.1016/j.jechem.2024.09.067

Zaheer Ud Din Babar , Muhammad Bilal Hanif , Yan’an Li , Wan-Ting Wang , Hanchen Tian , Cheng-Xin Li

{"title":"Tailoring BaCe0.7Zr0.1(Dy0.1|Yb0.1)0.2O3−δ electrolyte through strategic Cu doping for low temperature proton conducting fuel cells: Envisioned theoretically and experimentally","authors":"Zaheer Ud Din Babar , Muhammad Bilal Hanif , Yan’an Li , Wan-Ting Wang , Hanchen Tian , Cheng-Xin Li","doi":"10.1016/j.jechem.2024.09.067","DOIUrl":"10.1016/j.jechem.2024.09.067","url":null,"abstract":"<div><div>This study addresses the challenge of high sintering temperatures in proton-conducting fuel cells (PCFCs) with BaCeO3-doped electrolytes. We demonstrate that 1 mol% copper (Cu) doping at the B-site of BaCe0.7Zr0.1(Dy0.1|Yb0.1)0.2O3−δ (BCZDYb) improves sintering behavior, enabling densification at 1400 °C. However, Cu doping disrupts stoichiometry, creating barium vacancies and reducing proton-accepting cations, affecting overall conductivity. This mechanism is confirmed through density functional theory (DFT) calculations and various experimental techniques, including crystal structure analysis using X-ray diffraction (XRD) and morphology and elemental analysis via field emission scanning electron microscopy (FESEM) and energy-dispersive X-ray spectroscopy (EDS). Electrochemical measurements are performed using the electrochemical impedance spectroscopy (EIS). The ionic conductivity of 1 mol% Cu-doped BCZDYb (BCZDYb-1) is 1.49 × 10−2 S cm−1 at 650 °C, which is ∼3.58 times higher than that of BCZDYb sintered at 1200 °C. The BCZDYb-1 exhibits ∼16 times higher grain boundary conductivity when sintered at 1400 °C, compared to undoped BCZDYb. The single cell employing BCZDYb-1 as the electrolyte achieved a power density of ∼606 mW cm−2 at 550 °C. These results indicate that a controlled amount of Cu doping can enhance densification while maintaining high ionic conductivity, making it suitable for practical applications in PCFCs operating at lower temperatures.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"101 ","pages":"Pages 692-701"},"PeriodicalIF":13.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142664016","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}

引用次数: 0

Selenate oxyanion-intercalated NiFeOOH for stable water oxidation via lattice oxygen oxidation mechanism 通过晶格氧氧化机制实现稳定水氧化的硒氧阴离子互掺 NiFeOOH

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2024-10-22 DOI: 10.1016/j.jechem.2024.09.066

Yijie Zhang , Weiyi Zhang , Xiaowen Zhang , Jinping Li , Guang Liu

{"title":"Selenate oxyanion-intercalated NiFeOOH for stable water oxidation via lattice oxygen oxidation mechanism","authors":"Yijie Zhang , Weiyi Zhang , Xiaowen Zhang , Jinping Li , Guang Liu","doi":"10.1016/j.jechem.2024.09.066","DOIUrl":"10.1016/j.jechem.2024.09.066","url":null,"abstract":"<div><div>Transition metal-based compounds can serve as pre-catalysts to obtain genuine oxygen evolution reaction (OER) electrocatalysts in the form of oxyhydroxides through electrochemical activation. However, the role and existence form of leached oxygen anions are still controversial. Herein, we selected iron selenite-wrapped hydrated nickel molybdate (denoted as NiMoO/FeSeO) as a pre-catalyst to study the oxyanion effect. It is surprising to find that SeO42− exists in the catalyst in the form of intercalation, which is different from previous studies that suggest that anions are doped with residual elements after electrochemical activation, or adsorbed on the catalyst surface. The experiment and theoretical calculations show that the existence of SeO42− intercalation effectively adjusts the electronic structure of NiFeOOH, promotes intramolecular electron transfer and O–O release, and thus lowers the reaction energy barrier. As expected, the synthesized NiFeOOH-SeO only needs 202 and 285 mV to attain 100 and 1000 mA cm−2 in 1 M KOH. Further, the anion exchange membrane water electrolyzer (AEMWE) consisting of NiFeOOH-SeO anode and Pt/C cathode can reach 1 A cm−2 at 1.70 V and no significant attenuation within 300 h. Our findings provide insights into the mechanism, by which the intercalated oxyanions enhance the OER performance of NiFeOOH, thereby facilitating large-scale hydrogen production through AEMWE.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"101 ","pages":"Pages 676-684"},"PeriodicalIF":13.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142594020","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}

引用次数: 0

Enhanced dynamics of Al3+/H+ ions in aqueous aluminum ion batteries: Construction of metastable structures in vanadium pentoxide upon oxygen vacancies 水性铝离子电池中 Al3+/H+ 离子的动力学增强：氧空位在五氧化二钒中构建可迁移结构

IF 13.1 1区化学

Journal of Energy Chemistry Pub Date : 2024-10-22 DOI: 10.1016/j.jechem.2024.09.062

Zhibao Wang, Hanqing Gu, Tianci Wu, Wenming Zhang, Zhanyu Li

{"title":"Enhanced dynamics of Al3+/H+ ions in aqueous aluminum ion batteries: Construction of metastable structures in vanadium pentoxide upon oxygen vacancies","authors":"Zhibao Wang, Hanqing Gu, Tianci Wu, Wenming Zhang, Zhanyu Li","doi":"10.1016/j.jechem.2024.09.062","DOIUrl":"10.1016/j.jechem.2024.09.062","url":null,"abstract":"<div><div>In recent years, aqueous aluminum ion batteries have been widely studied owing to their abundant energy storage and high theoretical capacity. An in-depth study of vanadium oxide materials is necessary to address the precipitation of insoluble products covered cathode surface and the slow reaction kinetics. Therefore, a method using a simple one-step hydrothermal preparation and oxalic acid to regulate oxygen vacancies has been reported. A high starting capacity (400 mAh g−1) can be achieved by Ov<img>V2O5, and it is capable of undergoing 200 cycles at 0.4 A g−1, with a termination discharge capacity of 103 mAh g−1. Mechanism analysis demonstrated that metastable structures (AlxV2O5 and HxV2O5) were constructed through the insertion of Al3+/H+ during discharging, which existed in the lattice intercalation with V2O5. The incorporation of oxygen vacancies lowers the reaction energy barrier while improving the ion transport efficiency. In addition, the metastable structure allows the electrostatic interaction between Al3+ and the main backbone to establish protection and optimize the transport channel. In parallel, this work exploits ex-situ characterization and DFT to obtain a profound insight into the instrumental effect of oxygen vacancies in the construction of metastable structures during in-situ electrochemical activation, with a view to better understanding the mechanism of the synergistic participation of Al3+ and H+ in the reaction. This work not only reports a method for cathode materials to modulate oxygen vacancies, but also lays the foundation for a deeper understanding of the metastable structure of vanadium oxides.</div></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":"101 ","pages":"Pages 562-569"},"PeriodicalIF":13.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571543","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}

引用次数: 0