Energy Materials
·
2026
·Vol. 6
·期 9
·N
·
IF 11.9
Chenxing Mao\u003Csup\u003E1,\u003C\u002Fsup\u003E,Chang Zhang\u003Csup\u003E2,\u003C\u002Fsup\u003E,Jie Chen\u003Csup\u003E3\u003C\u002Fsup\u003E,Junpo Guo\u003Csup\u003E3,\u003C\u002Fsup\u003E,Zhifei Cui\u003Csup\u003E1\u003C\u002Fsup\u003E,Rongtao Zhang\u003Csup\u003E1\u003C\u002Fsup\u003E,Xin Li\u003Csup\u003E1\u003C\u002Fsup\u003E,Rui Li\u003Csup\u003E4\u003C\u002Fsup\u003E,Yinan Liu\u003Csup\u003E4,\u003C\u002Fsup\u003E,Xupo Liu\u003Csup\u003E1,3,\u003C\u002Fsup\u003E
NiFe hydroxide has emerged as a highly promising electrocatalyst in water electrolysis, yet its application in catalyzing the hydrogen evolution reaction (HER) remains challenging. Herein, we report a corrosion-reconstruction strategy to fabricate RuO2 nanocluster-endowed NiFe hydroxide [RuO2/NiFe(OH)x] as an efficient electrocatalyst for HER application. Density functional theory (DFT) calculations provide insight into the HER mechanism, revealing that the reconstructed surface enriched with RuO2 nanoclusters optimally adsorbs water molecules. This modification also induces a shift of the *H adsorption site from oxygen atoms to ruthenium atoms due to electron transfer effects, facilitating the desorption of *H and promoting efficient H2 formation. The synthesized RuO2/NiFe(OH)x catalyst delivers prominent HER activity (149 mV at 100 mA cm-2) and robust operational stability in a water-splitting device, sustaining 200 mA cm-2 for 100 h with almost no obvious voltage increment. Importantly, the fabrication of a large-area electrode demonstrates that this simple, room-temperature corrosion-reconstruction strategy is a promising and viable route for the application of HER electrocatalysts.
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高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2020
·Vol. 82
·期 10
·2098-2113
·
IF 1.638
He Jiaojie,Yang Yue,Xu Yuhong,Wang Zichuan,Xu Bing,Huang Yuheng,Yang Liwei
In this study, an excellent phosphate adsorbent was prepared for removing phosphate to an extremely low concentration. The La(OH) 3 nano-rods stabilizing in polyacrylonitrile (PAN) nanofibers (PLNFs) were prepared by electrospinning and a subsequent in situ precipitation. PAN nanofibers were employed as the matrix of the composite nanofibers, where the well-dispersed La(OH) 3 nano-rods were encapsulated as the active species for highly efficient phosphate capture owing to the strong binding between phosphate and lanthanum. On account of the nano-structure, the maximum phosphate adsorption capacity was 151.98 mg P/g (La), much higher than the result of La(OH) 3 nano-crystal, produced by precipitation without PAN or any organic surfactants. Moreover, the PLNFs could remove phosphate (2 mg P/L) to an extremely low concentration within 20 min, which could lead to a nutrient deficient condition to protect water quality and ecosystem. The optimization of PLNFs design was implemented through parameter adjustment of electrospinning. Lanthanum salt content, humidity, concentration of solution and applied voltage were chosen to analyze the influences on the composition, diameter and morphology of the nanofibers, giving the result that the most effective adsorbent was the PLNFs with spider-web-like nano-structures. The La(OH) 3 nano-rods stabilizing in polyacrylonitrile nanofibers (PLNFs) were prepared by electrospinning and a subsequent in situ precipitation. The maximum phosphate adsorption capacity by PLNFs was 151.98 mg P/g (La). The PLNFs could remove phosphate (2 mg P/L) to an extremely low concentration within 20 min. The PLNFs with spider-web-like nano-structures showed the highest phosphate removal.
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高影响因子
Journal of Materials Chemistry A
·
2016
·Vol. 4
·期 29
·11430-11438
·
IF 8.262
Hua Tian,Lin Wang,Yang Jiang,Lin Zhang,Yan Li,Li Hou,Cunqi Wu,Faming Gao
Graphene has great potential to significantly enhance the electrochemical activity of redox-active materials for supercapacitors. However, the agglomeration of graphene sheets remains a critical challenge to excellent energy storage performance of hybrid composites supported by graphene. Herein, a facile hydrothermal approach for the synthesis of porous Ni2CO3(OH)2/functionalized graphene (NCB/FGN) composites is developed. To improve the dispersion properties of graphene, sulfonated salicylic acid serving as a functionalized composition is covalently anchored to the surface of functionalized graphene. The systematic investigation indicates that the presence of functionalized graphene plays a crucial role in establishing the porous structure of hybrid composites. Compared to reduced graphene oxide (rGO), functionalized graphene is more beneficial to accommodate the expansion of the surface area and the reduction of the pore length in hybrid composites. The detailed electrochemical characterization demonstrates that the unique porous structure of NCB/FGN composites encompasses the great capability of rapid kinetic diffusion of active ions in electrolytes during the electrochemical reaction. The specific capacitance of NCB/FGN composites is 1508 F g−1 at a current density of 1 A g−1, higher than 1258 F g−1 for NCB/rGO composites and 1039 F g−1 for pristine NCB. After 3000 charge–discharge cycles at a current density of 10 A g−1, the specific capacitance of NCB/FGN composites still approaches their initial capacitance.
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高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Qiangli Lv,Haoran Guo,Duo Xu,Yuling Zhai,Hua Wang,Tao Zhu,Xing Zhu,Kongzhai Li,Zhihong Yang,Zhishan Li
The urea oxidation reaction (UOR) is considered as an alternative to the oxygen evolution reaction for high-efficiency hydrogen production, because it can simultaneously achieve wastewater treatment and hydrogen production. However, the slow kinetics of the UOR hinder its widespread adoption due to relatively complex molecule, it is urgent to rational design and preparation of high-performance UOR catalysts. Herein, we report a simple synthesis of the NiMn-LDH@Rh(OH) 3 heterostructure and a systematic investigation of urea-assisted electrolytic hydrogen production， significantly enhances the efficiency of urea electrolysis. The amorphous Rh(OH) 3 structure provides a higher density of active sites and greater catalytic surface exposure, while the synergistic interaction between Rh(OH) 3 and NiMn-LDH improves both electrical conductivity and catalytic performance. The catalyst of NiMn-LDH@Rh(OH) 3 –3 requires only 1.29 V overpotential to achieve a current density of 10 mA cm −2 in a 1.0 M KOH and 0.33 M urea solution, surpassing other catalysts. Furthermore, it demonstrates remarkable stability with minimal potential increase during 48-hour chronopotentiometric tests at 100 mA cm −2 . This work making the developed strategy promising for the rational design of highly active electrocatalysts for green hydrogen production and the treatment of urea-rich wastewater.
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高影响因子
GREEN CHEMISTRY
·
2025
·
IF 9.2
Kaiwei Meng,Ziyi Fan,Huiming Wen,Yujie Hu,Wenjun Zhang,Zupeng Chen
The electrochemical conversion of glycerol-a biodiesel byproduct into formic acid coupled with hydrogen evolution reaction (HER) offers a green route for biomass utilization. However, existing systems suffer from high energy demands and insufficient selectivity. Herein, a self-grown copper oxide nanorods decorated with platinum species (Pt/CuO NRs) is developed, reaching a current density of 20 mA cm-2 at 1.14 V vs. RHE, with 97.4% formic acid selectivity at 1.40 V vs. RHE and nearly 100% glycerol conversion. Electrochemical impedance spectroscopy and in situ Raman spectroscopy reveal that Pt0 sites enhance electron transfer at the Cu3+-OH-Pt interface, facilitating CuⅢ-OOH formation. Density functional theory (DFT) analysis shows that Pt weakens O-H bond strength in CuOOH and lowers the dehydrogenation energy barrier, synergistically boosting GOR. Furthermore, a membrane electrode assembly (MEA) with Pt/CuO NRs as the anode and Pt/CuOx (c-Pt/CuOx) as the cathode is established for GOR and HER, respectively, which can operate at 1.55 V for a current density of 100 mA cm-2, reducing the potential by 380 mV compared to water splitting. The developed GOR(+)||HER(-) electrolyzer demonstrates stable performance for 100 hours at 150 mA cm-2, with a formic acid selectivity of 90%. This represents a significant improvement over existing copper-based catalysts, highlighting the green chemistry advantages. The techno-economic analysis demonstrated the economic viability of electrochemically converting glycerol into potassium dicarboxylate (KDF) and H₂, with processing costs of $4655-4797 per ton and a market value of $6389 per ton at representative commercial current densities of 100 and 300 mA cm-2.
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高影响因子
ELECTROCHIMICA ACTA
·
2013
·
IF 3.777
Zonghua Pu,Qian Liu,Abdullah H. Qusti,Abdullah M. Asiri,Abdulrahman O. Al-Youbi,Xuping Sun
The present communication reports on the first electrodeposition of Ni(OH) 2 on ZnO array supported on Ni foam. When applied as a binder-free electrode material for pseudocapacitive energy storage, the resulting ZnO@Ni(OH) 2 array exhibits a high specific capacitance of 2028 F g −1 at a current density of 10 A g −1 with good cycling stability. Meanwhile, the array exhibits a superb rate capability. Even at an extremely high current density of 100 A g −1 , the array still shows a very high specific capacitance of 1059 F g −1 .
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Runhua Gao,Handing Liu,Bowen Fu,Shuyang Li,Ziyao Long,Dalin Sun,Yun Song
Germanium-based materials possess high theoretical capacity of approximately 1000 mAh·g −1 , nevertheless, the practical electrochemical performance is severely hampered by poor cyclability due to volumetric expansion of Ge upon cycling. Herein, novel hydrangea-like CoGeO 2 (OH) 2 constructed by 2D nanoplates has been facilely synthesized with the assistance of ethylene glycol and further applied to anode materials for lithium ion storage. The hydrangea-like CoGeO 2 (OH) 2 anode exhibits an enhanced specific capacity of 1174 mAh·g −1 at a current density of 0.5 A g −1 after 100 cycles. Such outstanding electrochemical performance could be accredited to the rationally designed hydrangea-like structure, which can relieve the interval stress aroused by lithiation/de-lithiation, shorten the pathway of electron/ion transportation and take advantage of the pseudocapacitive nature of two dimensional nanosheets that could improve the reaction kinetics and endow the material with remarkable rate capability. Moreover, the inherent Co-bonded hydroxyl groups facilitate the pseudocapacitive effect, and Ge-based component contributes to the capacity. These advantages help CoGeO 2 (OH) 2 hydrangeas gain a competitive edge over other candidates of anode materials for lithium-ion batteries.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Rongjing Jia,Shuling Chang,Ruirui Wang,Yanhong Xu,Rijie Wang,Lihong Zhang
The electrocatalytic CO 2 reduction reaction to CO (ECO 2 RR) is an effective way to achieve carbon resource utilization. It requires catalysts that can synergistically couple CO 2 activation with efficient CO desorption. This work engineers this synergy by constructing an interfacial Ag δ+ -O-Zn configuration on Zn(OH)F-derived supports via controlled Ag loading (0–5 wt%). The optimal catalyst (3A/Z, 3 wt% Ag) balances the formation of interfacial, oxidized Ag species (Ag δ+ ) with well-dispersed metallic Ag 0 nanoparticles. It achieves a CO Faradaic efficiency of 95.4% at −1.15 V vs. RHE and maintains 86% efficiency over 5 h at 6.38 mA cm −2 . In-situ ATR-SEIRAS spectra and kinetics reveal that Ag δ+ -related sites lower the barrier for *COOH formation, while adjacent Ag 0 domains facilitate *CO desorption. Excessive loading (5A/Z) promotes Ag aggregation and support decomposition, diminishing the critical Ag δ+ -O-Zn interface and performance. This study highlights interface coordination engineering as a key strategy for designing bifunctional ECO 2 RR catalysts.
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高影响因子
NANO
·
2024
·
IF 1
Junxiang Mo,Jun Li,Jing Li,Yashan Li
The development of composite materials is a key area of research for enhancing the electrochemical performance of electrode materials. In this study, NiCo–S nanostructured hybrid electrode materials were prepared on nickel foam (NF) by using binary metal–organic frameworks (MOFs) as the sacrificial template through a two-step hydrothermal method. Ni–MOF was then deposited on the surface of NiCo–S/NF through the hydrothermal method and subsequently converted into Ni(OH) 2 through a subsequent alkalization treatment. The duration of the Ni–MOF hydrothermal process was varied as a parameter. NiCo–S@Ni–MOF/NF was prepared through hydrothermal reaction for 6 h, 9 h and 12 h, followed by heating in a 6 M KOH solution at 75 ∘ C for 6 h in a water bath. The electrode materials with the best morphology and electrochemical properties were obtained when the hydrothermal reaction time was 6 h. The optimized electrode had a specific capacity of 2533.2 F ⋅ g − 1 at 1 A ⋅ g − 1 and a capacity retention rate of 60.8% at 10 A ⋅ g − 1 , which indicated good rate performance. Additionally, the electrode material demonstrated excellent cycling stability, with a capacity retention rate of 95.3% after 5000 cycles at 50 mV ⋅ s − 1 . The energy density of the hybrid supercapacitor device assembled from this electrode material was 33.5 Wh ⋅ kg − 1 when the power density was 849.89 W ⋅ kg − 1 at a current density of 1 A ⋅ g − 1 .
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Xiangyang Gao,Xin Liu,Chenxi Zhou,Qiyan Wang,Ruya Guo
Tailoring efficient bifunctional electrocatalyst with dual-heterojunction is crucial for overall water splitting (OWS). Herein, a multicomponent bifunctional catalyst with dual-heterojunction is rapidly constructed via sequential electrodeposition for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Density functional theory (DFT) calculations reveal that bidirectional electron transfer at the interface induces a double built-in electric field (BIEF) in Pt/CeO 2 -Ni(OH) 2 , which offers additional impetus for electron transport and brings the d -band center closer to the Fermi level, thereby optimizing reaction kinetics and the adsorption of reaction intermediates. Active Pt and CeO 2 nanoparticles (NPs) are uniformly anchored on the stable Ni(OH) 2 nanoflocs, ensuring high exposure of active sites and preventing NPs aggregation. Meanwhile, Ni(OH) 2 , serving as abundant electron donor center, forms dual heterointerface with Pt and CeO 2 (Pt-Ni(OH) 2 and CeO 2 -Ni(OH) 2 ), which ensures structural stability during electrochemical processes. Benefiting from the dual-heterojunction and the unique structure design, Pt/CeO 2 -Ni(OH) 2 exhibits excellent electrocatalytic performance, requiring only 66 mV (10 mA cm −2 ) and 278 mV (100 mA cm −2 ) for HER and OER, respectively. Remarkably, the two-electrode electrolyzer based on Pt/CeO 2 -Ni(OH) 2 electrode requires only 1.49 V to deliver 10 mA cm −2 with an excellent durability for OWS. This work brings light to the rational design and directional construction of bifunctional electrocatalyst hybrid nanomaterials with multiple heterojunctions.
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高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
·Vol. 60
·期 32
·22965-22976
·
IF 12.2
Cheng Dong,Ma Runhao,Tan Yuansen,Wu Zhongkuan,Ding Haoran,Wu Fan,Chen Si,Wang Huaqing,Lou Guangyu,Ma Yingying,Wang Binbin,He Feng
Oxygenation
of mackinawite (FeS) at redox interfaces
constitutes
a key biogeochemical process that generates hydroxyl radicals ( • OH) and facilitates contaminant attenuation. However,
the influence of common inorganic ligands such as tripolyphosphate
(TPP) on interfacial electron transfer in this process remains poorly
understood. Herein, 1.0 mM TPP increased cumulative • OH production approximately 23.5-fold over 180 min of FeS oxygenation,
with the electron utilization efficiency for • OH
production increasing from 0.33% to 8.18%. TPP enhanced • OH generation by promoting Fe(II) dissolution, thereby driving homogeneous
Fenton-like reactions, while facilitating Fe(III)/Fe(II) redox cycling
through solid–liquid interactions. Additionally, TPP acted
as an interfacial coordination modulator by rearranging the local
Fe(II) environment, and the resulting surface Fe(II)-TPP complexes
improved the utilization of structural electrons. Electrochemical
measurements and DFT calculations indicated that this interfacial
coordination suppressed structural Fe(II) oxidation and reduced unproductive
electron consumption, while lowering the energy barrier for H 2 O 2 -forming O 2 activation at TPP-modified
FeS sites. XRD, FTIR, and EXAFS analyses showed that TPP adsorption
inhibited lepidocrocite crystallization and redirected secondary mineral
evolution toward ferrihydrite-rich products. These findings elucidate
how ubiquitous ligands regulate mineral-water interfacial processes
and • OH generation, providing a basis for optimizing
FeS-based environmental remediation technologies.
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PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Yang Wang,Cuilian Sun,Tianxing Wu,Xiujing Xing,Wei Xiong,Hao Li
The electrocatalytic nitrite reduction reaction (NO 2 RR) converts harmful nitrite in aqueous media into high value-added ammonia (NH 3 ) under mild conditions, representing a promising technology that integrates environmental remediation and green NH 3 synthesis. However, the NO 2 RR undergoes a complex process involving multi-electron/proton transfer steps. Cu-based catalytic systems are universally plagued by the inherent bottleneck of insufficient activity and selectivity, and these dual constraints can hardly be simultaneously overcome by single-element doping alone. Herein, we fabricated fluoride and cobalt co-doped Cu 2 (OH) 2 CO 3 nanosheet catalysts via a one-step hydrothermal method, where the synergistic effect between anionic and cationic dopants enables the simultaneous tailoring of the electronic structure and active site distribution of the material. Electrochemical test results demonstrate that F and Co co-doping can significantly boost the NO 2 RR catalytic performance of Cu 2 (OH) 2 CO 3 . The optimal F-3 sample achieves the highest NH 3 Faradaic efficiency (FE) of 96.47% with an NH 3 yield rate of 28.55 mg h −1 mg cat -1 at −0.8 V (vs. RHE) in 0.15 M NaNO 2 neutral electrolyte, showing a nearly 2-fold performance improvement over the undoped counterpart and outperforming most reported non-noble metal NO 2 RR electrocatalysts. This work provides a high-performance NO 2 RR electrocatalyst for neutral aqueous systems, and demonstrates that anion-cation synergistic doping can break the intrinsic performance bottleneck of Cu-based hydroxyl compounds, offering a valuable modification strategy for rational catalyst design towards electrocatalytic nitrogen-containing pollutant conversion.
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