INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Shucan Qin,Qianqian Peng,Weizhen Kong,Rong Xue,Chongqing Xu,Jianming Shi,Yanrong Liu,Yunqian Ma
Integrating sulfide oxidation reaction (SOR) with hydrogen evolution reaction (HER) by electrochemical means to simultaneously valorize sulfion and produce hydrogen is an efficient cleaner production method. Currently, we reported on the fabrication of one succulent-like phosphorus-doped transition metal selenide bifunctional catalyst supported on nickel foam (P–CoSe/NF) for SOR and HER. The unique structure has a significant surface area that allows many active sites to be exposed, enabling the catalyst to have an excellent activity up to 100 mA cm −2 at only 0.362 V. The H 2 Faraday efficiency reaches 97.4% and the rate of sulfur evolution is 26.24 mg h −1 . The durability test demonstrates that the bifunctional catalyst possesses excellent anti-sulfur properties. The Density Functional Theory calculations demonstrate that phosphorus as a dopant is believed to confer an optimal electronic structure and local coordination environment by tuning d electron number. The calculate S 8 ∗ to S 8 was confirmed to have a low energy barrier, indicating the self-cleaning tendency caused by phosphorus doping. This work presents a promising approach utilizing anti-sulfur single-atom-doped transition metal selenide catalysts in electrochemical reaction, representing a significant advancement in achieving low-cost and high value-added using waste resources.
研究领域:
电化学
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材料科学
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催化
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可再生能源
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环境科学
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产品关联
DOI
高影响因子
CARBON
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2022
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IF 11.307
Zhaoxia Cao,Yahan Wang,Jian Guo,Jingyi Jia,Zhennan Zhang,Yuantao Cui,Yanhong Yin,Mingguo Yang,Shuting Yang
Advanced hierarchical hybrid nanostructures of polar, conductive and catalytic chemical traps/carbon with rationally tailored components, structures, and chemistries are important in determining the performance of lithium-sulfur (Li–S) batteries. Herein we propose a facile strategy to prepare 3D-structured CNF@graphene-CoSe (CNF@G L -CoSe) cable/sheath heterostructure with the in-situ formed CoSe as a catalyst for graphene-like carbon growth and Se as a catalyst promoter. The architecture integrates high electrical conductivity , effective ion transport, notable polysulfide entrapment, and polysulfide redox kinetics, availing lithium/sulfur conversion when applied as an interlayer in a Li–S battery . As expected, the battery delivered a low decay of 0.053% per cycle over 700 cycles at 1 C. The capacity even remained 649.4 and 524.5 mA h g −1 at 4 and 6 C, respectively. Furthermore, an areal capacity of about 3 mA h cm −2 at 0.1 C after long-term tests can still maintain with sulfur loading of 4.5 mg cm −2 .
研究领域:
材料科学
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能源存储技术
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产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
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2025
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IF 4.7
Fei Lu,Bin Zhang,Lifeng Shen,Anjie Chen,Yuhe Chen,Yuxue Zhou,Xiuyun Zhang,Bitao Liu,Min Zhou
Replacing the sluggish anodic water oxidation reaction with the glucose oxidation reaction (GOR) offers an energy-saving strategy to obtain value-added products during the hydrogen production process. However, rational design of the GOR electrocatalyst with an explicit structure–property relationship remains a challenge. In this study, by using cobalt chalcogenides as model catalysts, we performed an in-depth study of the GOR catalytic mechanism of CoS and CoSe nanosheets. Experimental and theoretical results revealed that the reaction pathway on cobalt chalcogenides strongly depends on their binding energy to hydroxyl (OHBE). For CoS with a weak OHBE, the reaction proceeds through an “electrophilic oxygen” route. While for CoSe, due to the strong OHBE, a surface reconstruction occurs before the GOR and therefore follows the “electrochemical-chemical” route. Inspired by these findings, a customized strategy was proposed to regulate the OHBE of the catalysts, which involved introducing F atoms into CoS to enhance its OHBE, and weakening the OHBE of CoSe by doping with Zn atoms. The optimized F-doped CoS and Zn-doped CoSe catalysts both exhibited significantly improved performance for GOR. This study thus provides a verifiable paradigm for improving the GOR performance via a customized strategy and sheds light on the design of novel catalysts in the future.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2019
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IF 14.229
Yan Zhou,Jingtong Zhang,Hao Ren,Yuan Pan,Youguo Yan,Fengchao Sun,Xueyuan Wang,Shutao Wang,Jun Zhang
Cation doping into 2D transition metal chalcogenides (TMC) is always interesting and meaningful, due to the possibilities of tuning both the crystal and electronic structures of TMCs. Herein, we used a mixed phase of CoSe/Co 9 Se 8 to facilitate the successful doping of Mo in CoSe crystal lattice. XRD, HRTEM, Raman spectroscopy and EXAFS analyses show a lattice contraction of Mo doped CoSe. Theoretical calculation confirms that Mo doping can lead to the lattice contraction of CoSe, and cause continuity shift of electron density of state toward Fermi level. We also demonstrated in this work, experimentally and theoretically, that the successful tuning of both crystal and electronic structure of CoSe upon on Mo doping leads to enhanced electrocatalytic HER performance in acidic condition. Co 0.8 Mo 0.2 Se showed the best HER activity, with only 186.1 mV overpotential needed to achieve 100 mA cm −2 current density and low Tafel slope of 58.7 mV dec -1 .
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
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2018
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IF 3.886
Jiandong Liu,Jiaojiao Liang,Caiyun Wang,Jianmin Ma
One-dimensional nano-structured materials have attracted attention due to its unique properties afforded such as the across-linked structures and large aspect ratios. In this work, one-dimensional CoSe@N-doped carbon nanofibers (CoSe@NC NFs) are successfully by combining the techniques of electrospinning and annealing. Selenium powder are directly dispersed in the polyacrylonitrile /N,N-Dimethylformamide (DMF) solution containing cobalt salt to form the product. The performance of these materials was investigated in Li-ion batteries after the annealing at different temperatures. The CoSe@NC nanofibers annealed at 550 °C (CoSe@NC-550) and displayed excellent storage properties, affording a high capacity of 796 mAh·g −1 at a current density of 1 A·g −1 for 100 cycles. Moreover, it is confirmed that the pseudocapacitive contribution of CoSe@NC-550 is up to 72.8% at the scan rate of 1 mV/s through the cyclic voltammetry analysis.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
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2019
·Vol. 7
·期 7
·3317-3326
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IF 10.733
Menglei Yuan,Sobia Dipazir,Meng Wang,Yu Sun,Denglei Gao,Yiling Bai,Min Zhang,Peilong Lu,Hongyan He,Xiangyang Zhu,Shuwei Li,Zhanjun Liu,Zhaopeng Luo,Guangjin Zhang
The oxygen evolution reaction (OER) is a half reaction of electrochemical water splitting that suffers from a kinetically sluggish four-electron process, and it is regarded as the efficiency-limiting step in water splitting. Herein, heterostructures of CoSe (cobalt selenide) nanoparticles and MoSe2 (molybdenum selenide) nanosheets (CoSe/MoSe2 hybrids) were fabricated through a non-metal-induced growth method. Due to the increase in the effective specific area and the electron transfer ability caused by the formation of the heterogeneous interface, the obtained CoSe/MoSe2 hybrids show superior OER performance (η = 262 mV at 10 mA cm−2) and long-term stability (20 h for continuous testing) as compared to pure CoSe, MoSe2 and physically mixed CoSe and MoSe2. Schematic energy band diagrams derived from ultraviolet photoelectron spectroscopy results further confirmed the electronic modulation between CoSe and MoSe2 and revealed that the d-band center of CoSe/MoSe2 hybrids moved closer to the Fermi level, giving rise to high charge carrier density and low intermediate adsorption energy as compared to CoSe and MoSe2. This work provides some insight into the design and synthesis of heterostructured nanomaterials from the MOF precursors.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
CARBON
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2026
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IF 12.7
Yihang Yang,Yingan Li,Zhe Gong,Huiyuan Gu,Gaofeng Shao,Xiaogu Huang
The growing demand for protection against electromagnetic interference has driven the development of ultralight microwave absorbers with strong attenuation capability and broad effective bandwidth. Herein, ultralight hierarchical skin–core CoSe@C/carbon nanofiber aerogel fibers (CoSe@C/CNFAFs) are fabricated by integrating CoSe@C nanoparticles onto aramid-derived carbon nanofiber aerogel fibers through ZIF-67 immobilization and subsequent selenization/carbonization. The resultant aerogel fiber exhibits a distinct skin–core architecture and an interconnected porous network, which not only minimizes density but also improves impedance matching and facilitates multiple scattering and reflection of incident microwaves. Meanwhile, the abundant heterogeneous interfaces between CoSe, carbon shells, and carbon nanofiber frameworks, together with structural defects in the carbon matrix and selenium-related vacancies, synergistically enhance interfacial polarization, dipolar polarization, and conductive loss. Benefiting from these structural and compositional advantages, the optimized CoSe@C/CNFAF800 delivers a minimum reflection loss of −62.51 dB at a thickness of 2.95 mm and an effective absorption bandwidth of 7.4 GHz at 2.7 mm with an ultralow filler loading of only 1 wt%. In addition, radar cross-section simulations reveal an enhanced electromagnetic wave attenuation capability under practical incident conditions, with a maximum reduction of 59.87 dB m 2 . This work highlights the great potential of hierarchical skin–core metal selenide/carbon aerogel fibers for achieving lightweight, broadband, and high-efficiency microwave absorption, and provides a feasible strategy for the design of next-generation ultralight electromagnetic wave absorbers. Download: Download high-res image (619KB) Download: Download full-size image
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产品关联
DOI
高影响因子
Surfaces and Interfaces
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2025
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IF 6.3
Yongqin Chen,Yonglei Xing,Xiaoyong Jin,Yage Peng,Gang Ni
In this work, cobalt selenide (CoSe) catalysts featuring abundant reactive sites and selenium vacancies were prepared through a solvothermal route and utilized, in activating peroxymonosulfate (PMS) to degrade sulfadimidine (SMZ). The catalyst demonstrated excellent catalytic efficiency, stability, and potential for practical applications, achieving 90–100% degradation of various organic pollutants, including tetracycline, bisphenol F, and carbamazepine. Mechanistic investigations revealed that both Co and Se species worked synergistically to promote PMS activation, which was pivotal in improving the SMZ degradation efficiency. Specifically, low-valent selenium species and Se vacancies accelerated Co 2+ /Co 3+ redox transitions and facilitated ROS production, ultimately enhancing the PMS activation performance. Radical scavenging tests combined with EPR characterization confirmed that 1 O 2 was the primary reactive species involved, indicating that non-radical pathways were primarily responsible for SMZ degradation. Furthermore, quantitative structure–activity relationship (QSAR) analysis revealed that the environmental toxicity of SMZ and its main degradation products was significantly reduced after treatment. Overall, this study presents a novel and efficient PMS activator based on CoSe and elucidates its catalytic mechanism, offering new insights and technological support for the advanced treatment of antibiotic-containing wastewater.
研究领域:
环境科学
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催化
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高级氧化技术
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水处理
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材料化学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2026
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IF 2.6
Hao-Peng Lu,Xiao-Cheng Long,Ying-Ge Xu,Zutao Pan,Lei Xian,Ling-Bin Kong
Electrocatalytic nitrate reduction to ammonia can not only effectively help realize the nitrogen cycle in the natural environment, but also be used for the industrial production of ammonia and the treatment of sewage containing nitric acid, thereby achieving wastewater reuse and environmental purification. Converting nitrate to ammonia involves the transfer of eight electrons and is a complex step. With the generation of by-products, exposure to an air environment increases the side reactions, thereby reducing the catalytic efficiency and limiting the application scenarios of the material. Therefore, it is crucial to select a nitrate reduction catalyst that is practical and can be applied to various scenarios. In this work, it is reported that CoSe catalysts have a high ammonia yield of 30.53 ± 3.15 mg h-1 cm-2 in an alkaline medium containing 0.5 mol L-1 NO3- exposed to air, and have a Faraday efficiency of up to 82.80 ± 2.64%, which is even higher than that of argon exposure. In this work, it was found that this phenomenon is due to the substitution of the oxygen reduction reaction (ORR) for the hydrogen evolution reaction (HER), which improves the catalytic efficiency through the modulation of side reactions.
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2026
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IF 19.9
Xiangyang Gao,Jingfei Zhang,Xin Liu,Shukun Yin,Yafei Zhao,Yuanzheng Zhang,Bangbang Nie,Qiyan Wang,Xiaobo Wang,Ruya Guo,Ronghan Wei
Photorechargeable power systems (PPSs) based on supercapacitors (SCs) provide a sustainable solution for alleviating the energy crisis. However, sluggish kinetics in SCs are insufficient to meet the requirements of rapid photogenerated charge storage; achieving efficient self-charging remains a challenge. Here, PPSs integrating flexible solid-state asymmetric SCs (FSASs) with N-doped carbon-stabilized CoSe/NiSe 2 heterojunction (N-C@CoSe/NiSe 2 ) and flexible solar cells (FSs) are precisely designed to achieve efficient self-charging capacity. Theoretical calculations reveal that the robust built-in electric field (BIEF) at the heterointerface accelerates electron reconstruction and enhances the affinity of OH − , thereby endowing abundant electroactive sites and fast reaction kinetics. The stable interfacial chemical bond between the N-C frame and the CoSe/NiSe 2 heterojunction significantly strengthens the BIEF while buffering volume expansion during electrochemical, improving the integral structural stability. The N-C@CoSe/NiSe 2 ingeniously combines synergistic optimization of reaction kinetics and structural stability, achieving high capacitance (2124 F g −1 ) and excellent cycling stability. The assembled FSASs deliver excellent energy storage capacity (70.8 Wh Kg −1 ). More importantly, integrated PPSs achieve a highly efficient photogenerated charge storage capacity of 4.5 V min −1 and sustainability, powering wearable electronic devices and small unmanned aircraft. This work provides scientific insights and guidance for designing robust heterogeneous and advancing the exploitation of next-generation sustainable power systems.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 13.2
Chenyang Hou,Xifei Li,Weihua Zhang,Ruixian Duan,Mengyang Li,Guiqiang Cao,Zhengxi Hou,Zongnan Lv,Yiming Qi,Yitong Yuan,Guohua Liu,Jingjing Wang,Yukun Xi,Xuexia Song,Wenbin Li,Jiujun Zhang
Single-component transition metal selenide (TMSe) hosts still struggle to balance the adsorption of lithium polysulfides (LPSs) and their catalytic conversion. Herein, a heterostructure host (MoSe 2 -CoSe@C) with an intra-spherical interwoven architecture was synthesized via impregnation-chemical vapor deposition. Benefiting from the synergy of adsorptive MoSe 2 and conductive CoSe, the heterointerface induces electron transfer from CoSe to MoSe 2 , upshifting the d-band center to enhance LPSs adsorption. Compared with their single-component hosts, the MoSe 2 -CoSe@C notably reduces the energy barriers of sulfur redox reactions, decreasing those for Li 2 S oxidation by 31.45 kJ mol −1 and for Li 2 S 4 reduction by 191.67 kJ mol −1 . Additionally, Co acts not only as a core component of the heterostructure but also induces the conversion of carbon-based materials into carbon nanotubes at high temperatures, thus forming a unique interwoven network. This network not only ensures efficient electron transport and inhibits the agglomeration of active components, but also increases the contact area between the host and active sulfur, thereby enhancing the number of effective catalytic sites. Consequently, the MoSe 2 -CoSe@C/S cathode achieves a discharge specific capacity of 582.1 mAh g −1 at a current density of 5C, with only 0.07% capacity decay per cycle over 200 cycles at 4C. This work provides a strategy to construct high-performance adsorption-catalytic hosts for lithium‑sulfur batteries (LSBs).
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DOI
高影响因子
ELECTROCHIMICA ACTA
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2025
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IF 5.6
Xuewei Ba,Xinyu Lan,Huaikang Zhang,Cheng Cheng,Wenping Huang,Xinyu Han,Deqing Zhang,Yan Yu
Transition metal compounds have garnered significant attention due to their high specific surface area, tunable composition, and synergistic effects. These materials exhibit excellent electrochemical performance, making them some of the most promising candidates for pseudocapacitive applications. Herein, cobalt selenide (CoSe), nickel selenide (NiSe), and trinickel diselenide (Ni 3 Se 2 ) nanosheets were grown on nickel foam using a simple two-step hydrothermal method. The three-dimensional network structure of the CoSe/NiSe/Ni 3 Se 2 @NF composite material provides a larger specific surface area and more electrochemically active sites. This architecture facilitates rapid electron transfer, enhances electrochemical performance, and results in a high specific capacitance of 2300.65 F· g −1 at a current density of 1 A· g −1 . The asymmetric supercapacitor device, assembled with CoSe/NiSe/Ni 3 Se 2 @NF as the positive electrode and activated carbon as the negative electrode, demonstrates an energy density of 63.16 Wh·kg −1 at a power density of 805.73 W·kg −1 . These outstanding electrochemical properties suggest that CoSe/NiSe/Ni 3 Se 2 @NF composite materials hold great potential as an energy storage material.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）