JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Yaoxia Yang,Fengyao Guo,Lan Zhang,Dangxia Wang,Xingwei Guo,Xiaozhong Zhou,Dongfei Sun,Zhiwang Yang,Ziqiang Lei
Electrochemical water splitting is a promising approach to produce hydrogen gas , but sluggish four-electron transfer of the oxygen evolution reaction (OER) severely limits the overall energy conversion efficiency of water splitting. Herein, as an excellent OER electrocatalyst , a technique of synthesizing Fe doped CoNiSe 2 nanosheet (Fe-CoNiSe 2 ) whole series using CoFe prussian blue analog produced by Co-ZIF-L reaction as a template is proposed here. The introduction of iron ions promotes the redistribution of the cobalt-nickel charge density, which enhances the OER kinetics. In view of the abovementioned points, Fe-CoNiSe 2 /NF has excellent activity, electrocatalytic properties and excellent stability in alkaline media, which only demands a lower overpotential of 244 mV and 271 mV to deliver a current density of 10 mA cm −2 and 50 mA cm −2 , respectively. The material also exhibits excellent stability for at least 24 h during the OER process. This work may provide some new insights into the assembly of advanced and highly-active materials for a variety of other energy conversion applications.
研究领域:
材料科学
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能源化学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
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IF 7.2
Jiaxing Zhang,Dongsi Wu,Aixiang Wei,Yu Zhao,Jun Liu,Yuding He,Zhen Liu
The development of structural stable, high-performance, inexpensive electrocatalysts for oxygen evolution reactions (OER) is essential to alleviate the energy crisis. Herein, cactus-like CoNiSe 2 was synthesized on nickel foam and NiFeOOH was electrodeposited on surface of CoNiSe 2 to form a core-shell structural electrode. The obtained NiFeOOH/CoNiSe 2 /NF exhibited ultra-low overpotentials of 204 mV and 234 mV at 10 and 100 mA cm −2 , with a Tafel slope of 26.2 mV dec −1 in 1 M KOH alkaline solution. Furthermore, the current density only decreased by 5% after a 100 h durability test at 200 mA cm −2 , showing excellent robust stability. A two-electrode system with NiFeOOH/CoNiSe 2 /NF as anode and Ni/NiO@MoO 3-x /NF as cathode (NiFeOOH/CoNiSe 2 /NF||Ni/NiO@MoO 3-x /NF) showed a low voltage of 1.47/1.56 V to deliver 10/100 mA cm −2 . According to the experimental and density functional theory (DFT) results, the strong electronic interactions at the NiFeOOH/CoNiSe 2 /NF interface leads to an increase in the valence state of Fe and an optimisation of the adsorption free energy , which are favourable to reduce the energy consumption of the OER. This work obtained high performance OER electrocatalysts by engineering amorphous and crystalline heterointerfaces and structural design, which will provide some inspiration for similar work.
研究领域:
材料科学
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电化学
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催化
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纳米技术
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能源材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Peng Zhou,Liping Wang,Mingyu Zhang,Feixiang Wu,Qizhong Huang,Zhean Su,Ping Xu,Mingdong Liao,Yueli Hu,Xiangbao Lin
High rates and durable anodes are the eternal pursuits of sodium ion batteries (SIBs). Constructing bimetal selenide is an efficient strategy to improve Na+ storage. Herein, a hierarchical hollow CoNiSe2/carbon compound (CoNiSe2/C) was designed as an anode of SIBs via selenizing the modified MOFs precursor. During the high-rate test, CoNiSe2/C electrodes exhibited an outstanding specific capacity of 301.9 mA h g–1 even at 20 A g–1, while an impressive cycle life over 2000 at 5 A g–1 was achieved with a residual capacity of 368.9 mA h g–1. The high-rate capability is attributed to the significantly reduced energy barrier of reaction activation and the strong microstructure of the hierarchical hollow CoNiSe2/C. It indicates that the CoNiSe2/C synthesized in this work is highly desirable and promising as a SIB anode material and sheds light on the design and development of anode materials.
研究领域:
材料科学
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能量存储
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电池技术
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纳米材料
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2023
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IF 8.7
Jinqi Wang,Chenxi Wang,Kai Hou,Xiaolong Su,Mugaanire Tendo Innocent,Zexu Hu,Senlong Yu,Hengxue Xiang,Meifang Zhu
Among all designated microwave absorbers, the combination of magnetic metal with carbon nanomaterials has been considered as one of the most effective ways for the absorption of electromagnetic wave (EMW). The incorporation of doped magnetic metal nanoparticles (NPs) with carbon nanomaterials provides excellent magnetic loss. Additionally, carbon matrix possesses tunable dielectric properties and designable microstructure which could further improving the performance of the EMW absorption. Herein, N-doped carbon nanofibers doped with CoNiSe 2 NPs was fabricated by electrospinning, carbonization and selenization process using for the EMW absorbers. The lowest reflection loss (RL) of −47.7 dB at the thickness of 2.1 mm while an effective absorption bandwidth (EAB) of 7.12 GHz at the thickness of 2.4 mm was achieved. The enhanced EMW attenuating properties can be attributed to the multiple EMW reflections, interfacial polarization between the fibers and magnetic loss facilitated by CoNiSe 2 NPs. This work provides a promising strategy for introducing multiple components to improve the EMW absorbing properties and can be potentially extended to the fabrication of other functional anti-electromagnetic materials.
研究领域:
材料科学
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电磁学
✓ 已验证
产品关联
DOI
高影响因子
Science China-Materials
·
2026
·
IF 7.7
Zhang Wen,Zhang Qiong,Zhang Ruixue,Liu Zhihao,Li Hongdong,Wu Zexing,Zhang Yang,Xu Guang-Rui,Wang Lei
The demand for Cl 2 is increasing globally, and the chlorine evolution from seawater is a promising technique in the chlor-alkali field to generate chlorine gas. Here, we constructed a novel hollow porous CoNiSe 2 /NiSe 2 nanosheet array for the electrosynthesis of chlorine in seawater-like solution. The CoNiSe 2 /NiSe 2 heterostructures were generated by ion exchange and calcination, which can improve their stability. Moreover, the formed porous hollow nanostructures show an ultra-high specific surface area due to the unique morphology and crystal structure, which can provide channels for mass transfer between the electrolyte and the surface of catalysts and expose more catalytically active sites for accelerating the reaction process. What is impressive is that the hybrid coupling of the Se 4p orbital and the Co/Ni 3d orbital in the heterointerface further reduces the reaction energy barrier of the chlorine evolution reaction (CER). The hollow porous CoNiSe 2 /NiSe 2 nanosheet arrays only exhibit an overpotential of 108 mV to reach the current density of 100 mA cm −2 in an acidic medium containing 4.0 M NaCl. Furthermore, the hollow porous CoNiSe 2 /NiSe 2 nanosheet arrays showed excellent stability and Cl 2 selectivity. The designed transition metal selenides provide a choice for the further development of non-noble metal-based catalysts in the chlor-alkali industry.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2021
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IF 9.127
Abdelhadi El Jaouhari,Amine Slassi,Bowen Zhang,Anton Pershin,Wei Liu,David Cornil,Xiuhua Liu,Jinhua Zhu
The chemical engineering of chalcogens' defects (either selenium or sulfur) on the surfaces of Nonprecious transition metal chalcogenides provides an effective route to enhance their electrocatalytic activity . Yet, the precise role of such defects during the OER is not fully understood, which in turn precludes an efficient optimization of their catalytic activity . Herein, CoNiSe 2 film, representing a multi-transition metal selenide model with selenium defects, is electro-deposited on a carbon cloth to investigate and optimize the intrinsic and dynamic behavior of selenium vacancies during the OER process. Interestingly, the defective CoNiSe 2 with the optimized amount of selenium vacancies exhibits an advanced OER performance, including low overpotential (252 mV at 10 mA cm −2 ) and high stability for 30 h. The ex-situ XPS and Raman spectroscopies also indicate that the optimized amount of selenium vacancies can facilitate the pre-oxidation of Co and Ni sites. The latter leads to a rapid adsorption of OH − ions and a further stabilization of Co/NiOOH, which in turn mediates the efficiency of OER. The density functional theory (DFT) calculations show that the introduction of a Se-vacancy on CoNiSe 2 surface enables to adjust the changes in Gibbs free energy between different OER steps and thereby, significantly reduce the overpotential.
研究领域:
化学工程
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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 ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Mi Xiao,Zhuoyuan Song,Xiaofan Gao,Songyi Yang,Xinyu Hui,Xinyue Du,Wei Yao,Haotian Duan
In this paper, the role of magnetron sputtered Au nanoparticles in regulating morphology of CoNiSe 2 to improve the performance of electrode materials for the supercapacitors is studied for the first time. After nanoneedle-like Co(OH) 2 is grown on Ni foam using a hydrothermal method, followed by Au nanoparticle deposition via magnetron sputtering. The resulting material underwent solvothermal processing with ascorbic acid as a reducing agent to prepare CoNiSe 2 . Because of the Au deposition, the morphology is changed by regulating the relationship between the ion consumption rate during selenization and the ion transport rate on the surface. When the magnetron sputtering time is 10 s, uniform mace-like CoNiSe 2 (named as NCA10-S) is formed with the best performance. Its specific capacitance reaches up to 2068.3 F g −1 at 1 A g −1 , which is 122.93 % higher than that of the single CoNiSe 2 electrode. The asymmetric supercapacitor composed of NCA10-S achieves a specific capacitance of 263.1 F g −1 at 1 A g −1 . When the power density reaches 800.01 W kg −1 , it has an energy density of 93.56 Wh kg −1 . This work provides a method for controlling transition metal selenide surface morphology to improve energy storage performance in supercapacitor electrodes.
✓ 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）