APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Yi Han,Hongdong Li,Mingjuan Zhang,Yunlei Fu,Yanru Liu,Yu Yang,Jixiang Xu,Yanling Geng,Lei Wang
The development of relatively inexpensive and highly active electrocatalyst for water splitting is essential to the energy conversion and sustainable economic improvement. In this work, based on nanostructure engineering, the CoSe 2 -Ni 3 Se 2 nanoparticles coated Co(CO 3 ) 0.5 (OH)·0.11H 2 O nanoneedles supported on the surface of Ni foam (NF) composite (CoSe 2 -Ni 3 Se 2 /NF) had been synthesized by a facile hydrothermal selenization method. Benefiting from the adequate nanostructure and moderate degree of selenization treatment, the obtained sample CoSe 2 -Ni 3 Se 2 /NF-0.4 using 0.4 g Se powder as selenium source shows remarkable electrocatalytic performance and electrochemical stability for either hydrogen evolution reaction (HER) or oxygen evolution reaction (OER). CoSe 2 -Ni 3 Se 2 /NF-0.4 only required 98 mV (vs. RHE) to reach the 10 mA cm −2 for HER and 344 mV (vs. RHE) to reach 100 mA cm −2 for OER in 1.0 M KOH solution. This work provides a simple strategy to controllably synthesize transitional metal diselenium-based electrocatalyst with adjustable amount of active phase, which are very important for the future development of the bifunctional electrocatalyst.
研究领域:
材料科学
·
能源化学
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DOI
高影响因子
CARBON
·
2026
·
IF 12.7
Shu-Ting Zhang,Jia-Ting Lei,Pei-Pei Chen,Shou-Cong Dong,Hao Zhang,Dong-Lin Zhao
Lithium–sulfur (Li–S) batteries are promising for next-generation storage, but their practical deployment is critically hindered by the polysulfide shuttle effect, the intrinsic low conductivity of sulfur, and severe volume expansion during cycling. In the study, the CNT-ZnSe@NC-CoSe 2 composite was fabricated through high-temperature selenization of a co-precipitated CNT-ZIF8 precursor that had been coated with polydopamine and chelated with Co 2+ ions. The ZnSe/CoSe 2 heterojunctions accelerate LiPS conversion and guide uniform Li 2 S deposition. An N-doped carbon shell buffers volume expansion and boosts catalysis, while interconnected CNTs form a robust 3D conductive network for rapid transport. This synergistic architecture suppresses the shuttle effect, ensuring stable long-term cycling for advanced lithium-sulfur batteries. Consequently, the S/CNT–ZnSe@NC–CoSe 2 cathode delivers an initial capacity of 1063.1 mAh g −1 at 0.1C and retains 355.2 mAh g −1 at 3C. Notably, it maintains a stable capacity of 577.2 mAh g −1 after 200 cycles. This work presents a heterostructure with enhanced polysulfide anchoring and efficient electron transport, paving the way for the development of high-performance lithium–sulfur batteries.
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Chenchen Yue,Zhao Liang,Yong Xu,Qiao Liu,Qiliang Wei,Dongjiang Yang,Jingjing Du,Weiyou Yang,Qing Shi
Electrolytic hydrogen production is fundamentally constrained by the sluggish kinetics of both the hydrogen evolution reaction (HER) at the cathode and the oxygen evolution reaction (OER) at the anode. To address this challenge, the development of efficient, durable, and economically viable bifunctional electrocatalysts is critical for advancing sustainable water splitting technologies. In this work, we present a rationally designed composite nanoflake heterostructure comprising CoSe 2 and NiFe layered double hydroxide (LDH) anchored on nickel foam (CoSe 2 @NiFe-LDH/NF), synthesized via a facile two-step electrodeposition. This integrated architecture exhibits exceptional bifunctional catalytic activity for both HER and OER. In situ Raman spectroscopy analysis demonstrated that Co Se bond cleavage induces cobalt oxidation and selenium leaching, while the CoSe 2 /NiFe-LDH interface orchestrates electron redistribution to drive NiFeOOH formation, synergistically enhancing OER activity through coupled electronic modulation and structural reconstruction dynamics. Structural characterization and theoretical calculations show that the charge redistribution at the heterojunction interface optimizes the adsorption energy of the reaction intermediates, thus improving the OER and HER performance. As a result, the optimized CoSe 2 @NiFe-LDH/NF demonstrates a modest overpotential of 227 mV@50 mA cm −2 for HER and 266 mV@100 mA cm −2 for OER. Furthermore, the CoSe 2 @NiFe-LDH/NF composite material employed in the overall water splitting cell demonstrates remarkable stability by maintaining a current density of 100 mA cm −2 at an applied voltage of 1.75 V for an extended duration of 100 h. This study not only presents a simple and convenient strategy for synthesizing cost-effective and high-efficiency bifunctional electrocatalysts but also establishes novel pathways for advancing the performance of non-precious metal electrocatalysts.
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DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Xin Lei Xu,Yi Wei Zhou,Yue Yu,Shi Gang Liu,Lei Han
It is imperative to design a highly selective, sensitive, and portable approach for the reliable determination and monitoring of mercury ion (Hg 2+ ) given its severe toxicity to both ecosystems and public health. Herein, we develop a colorimetric and photothermal-derived multimodal sensor for point-of-care testing of Hg 2+ based on the Hg 2+ -sensitized oxidase-mimetic activity of CoSe 2 nanorods. The synthesized CoSe 2 nanorods show negligible oxidase-mimetic activity. It can bind with CoSe 2 nanorods via an Hg-Se bond when Hg 2+ is present. The generation of HgSe on the surface of CoSe 2 nanorods booms the oxidase-like activity of CoSe 2 nanorods to catalyze the oxidation of 3,3′,5,5′-tetramethylbenzidine (TMB) into oxidative TMB (oxTMB), generating a hyperchromic effect and light-driven thermal effect. Consequently, the color and absorbance of the solution changed, realizing the colorimetric and visual sensing of Hg 2+ . The limit of detection (LOD) is 7.3 nM for colorimetry. Meanwhile, a photothermal sensor was also developed under the drive of a laser with a LOD of 12.3 nM. The developed sensor also shows high selectivity toward Hg 2+ because of the strong affinity between the CoSe 2 and Hg 2+ . Furthermore, the latent application of this sensor is confirmed by determining Hg 2+ in real water samples. More significantly, multimodal detection not only enhances accurate detection results through mutual authentication of different signals but also satisfies the demands of diversified detection by consolidating the advantages of photothermal and colorimetric approaches.
研究领域:
分析化学
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环境监测
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纳米生物技术
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传感技术
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重金属检测
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DOI
高影响因子
Nano Research
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2018
·Vol. 12
·期 1
·159-163
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IF 7.994
Lu Wenli,Jiang Rui,Yin Xiong,Wang Leyu
Photocathode with superior catalytic activity, long-term stability, and fast mass/electron transfer is highly desirable but challenging for dye-sensitized solar cell (DSC). Herein, the ZIF-67 grown on carbon cloth is successfully transformed into CoSe 2 embedded in N-doped carbon nanocage (CoSe 2 /N-C) via a growth-carbonization-selenization process. The carbon cloth supported CoSe 2 /N-C, as photocathode of DSC, demonstrates a good long-term stability and high photovoltaic efficiency (8.40%), outperforming Pt. The good efficiency can be attributed to the high catalytic activity of CoSe 2 , fast mass transfer of porous 3D structure, and good electron transport derived from the intimate contact between CoSe 2 and highly conductive carbon cloth. The high stability would be ascribed to N-doped carbon coating that perfectly prevents CoSe 2 from decomposition. This work will pave the way to develop highly efficient and stable Pt-free photocathode for DSC.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
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2026
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IF 4.4
Liu Tong,Zhang Jie,An Qianqian,Wu Yusheng,Li Laishi,Fang Tiehui,You Junhua
Electrocatalytic water splitting is a clean and sustainable method for hydrogen production. Cobalt diselenide (CoSe 2 ) is an electrocatalyst with great application prospects. However, due to the inherent low electrical conductivity and aggregation tendency of transition metal selenides, their practical applications are limited. In this study, under the constraint of three-dimensional porous nitrogen-doped reduced graphene oxide/nickel foam (N-rGO/NF) substrates, small-sized nitrogen-doped cobalt diselenide (CoSe 2-x N x ) nanoneedles were prepared by a one-step hydrothermal method, and excellent electrocatalysts were obtained. The optimized catalyst (N-rGO/CoSe 2-x N x /NF-100) exhibits excellent OER performance in an alkaline environment at current densities of 10, 50 and 100 mA cm −2 . N-rGO/NF not only provides good electrical conductivity for the electrocatalyst, but also limits the size of CoSe 2 . The three-dimensional porous structure constructed by small-sized CoSe 2 nanoneedles increases the specific surface area of the electrocatalyst, which is conducive to the OER process. The doping of nitrogen in CoSe 2 forms Co-Nx electron transfer channels, accelerating charge transfer. Density functional theory (DFT) calculations have confirmed that structural modification methods such as limiting the size of the electrocatalyst to avoid agglomeration, as well as electronic control methods such as nitrogen doping, can accelerate the surface structure reconstruction process of the catalyst, thereby improving the adsorption energy of the electrocatalyst for OER intermediates and reducing the overpotential.
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2021
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IF 7.46
Jiawen Li,Huali Jin,Min Wei,Wenjie Ren,Jinshui Wang,Yurong Zhang,Ligen Wu,Baoshan He
In this work, a sensitive dual mode competitive electrochemical immunosensor based on differential pulse voltammetry (DPV) and square wave voltammetry (SWV) response modes for quantitative determination of dibutyl phthalate (DBP) was successfully established. According to diethylenetriamine (DETA) assisted hydrothermal strategy, a novel N-doped graphene/CoSe 2 nanobelt composite was prepared. Afterwards, PEI functionalized NG-CoSe 2 and gold nanowires (AuNWs) were further compounded as a preliminary signal amplification platform for immunosensor. Thionine (Thi)-loaded [email protected] and secondary antibody (Ab 2 ) connected as a signal label. The immobilized coating antigen DBP-BSA and the DBP compete for limited antibody binding sites. The concentration of DBP can be determined by DPV detect the Thi signal loaded on the [email protected] 2 label. It can also be determined by SWV mode to detect the current generated by the reaction system of H 2 O 2 and o-phenylenediamine (o-PD) catalyzed by [email protected] with peroxidase like properties. Under optimum conditions, the linear ranges of the DPV and SWV modes were 1 pg mL −1 ∼1 μg mL −1 . And LOD were 0.486 pg mL -1 (DPV) and 0.711 pg mL -1 (SWV), respectively. Besides, it exhibited outstanding selectivity, reproducibility, stability and can be used for sensitive detection of DBP in real samples.
研究领域:
分析化学
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电化学
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纳米技术
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环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2022
·
IF 9.794
Jian Feng,Shao-hua Luo,Yi-cheng Lin,Yang Zhan,Sheng-xue Yan,Peng-qing Hou,Qing Wang,Ya-hui Zhang
Engineering ideal anode materials with low cost, considerable reaction kinetics and good structural stability are urgently needed for sodium-ion batteries (SIBs) toward large-scale applications. Here, a hierarchical peapod-like nanorod consisting of CoSe 2 /N-doped carbon (NC) core-shell nanoparticles (NPs) embedded into one-dimensional (1D) N-doped carbon nanotubes (CoSe 2 /NC@NCNTs) with inner void space is developed and fabricated by a self-template, dopamine-coating, and succeeding selenization strategy. In the cleverly designed CoSe 2 /NC@NCNTs composite, the 1D peapod-like structure provides high mechanical strength and allows for fast mass transport/electron transfer. The external NCNTs and inner void space can effectively accommodate volumetric undulation and restrain the aggregation of CoSe 2 NPs. Based on these advantages, the CoSe 2 /NC@NCNTs electrode exhibits excellent comprehensive sodium storage performance, e.g., good rate capability (386.3 mAh g −1 at 10.0 A g −1 ) and high cycling stability (394.2 mAh g −1 up to 4500 loops at 5.0 A g −1 ). Moreover, the SIB full cells (Na 3 V 2 (PO 4 ) 3 @C cathodes vs CoSe 2 /NC@NCNTs anodes) can achieve a reversible capacity of 75.6 mAh g −1 total after 200 cycles at 0.5 A g −1 . This work provides a feasible avenue to construct stable energy-storage materials.
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DOI
高影响因子
CHINESE CHEMICAL LETTERS
·
2020
·
IF 4.632
Guangmeng Qu,Xixi Zhang,Guotao Xiang,Yunrui Wei,Jiangmei Yin,Zonghua Wang,Xiaoli Zhang,Xijin Xu
Nano-polyhedral NiSe 2 /CoSe 2 (Ni-Co-Se) with hollow architectures are synthesized by selenizing the precursors of Ni-Co bimetallic hydroxides that are directly derived from ZIF-67. The as-fabricated Ni-Co-Se electrodes exhibit high specific capacitance of 1668 F/g at 1 A/g accompanying with outstanding rate capability (about 82.8% retention of the initial capacity at 20 A/g). The corresponding Ni-Co-Se//AC all-solid-state hybrid supercapacitors are assembled by directly using the Ni-Co-Se on carbon fabric as the positive electrode, which deliver high energy density and power density (38.5 Wh/kg at 802.1 W/kg, 32.0 Wh/kg at 8008.8 W/kg), excellent cyclic stability (82.3% retention after 5000 cycle) and robust mechanical flexibility (no obvious attenuation at bending to different angles). This work will provide a new and smart route for constructing transition metal selenides for supercapacitor devices.
研究领域:
材料科学
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电化学
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纳米技术
·
能源存储
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）