APPLIED SURFACE SCIENCE
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2021
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IF 6.707
Pengkun Wei,Zewei Hao,Yang Yang,Lu Liu
Although nickel-based counter electrodes display good catalytic properties in dye-sensitized solar cells (DSSCs), there are challenges to achieve efficient activity for practical device. Except that, vacancy can effectively regulate electrocatalytic efficiency for the catalytic reactions, which take place on the surface of catalysts. Thereby, the hollow Ni 0.85 Se nanospheres grown on the reduced graphite oxide (RGO) were designed to attain the composites utilizing a facile hydrothermal strategy, and followed by heating within argon atmosphere at 400 °C (NiSe 2 -400) and 450 °C (NiSe 2 -450), forming NiSe 2 /RGO composite catalysts with abundant vacancies. Importantly, the resultant NiSe 2 -400 as counter electrode (CE) exhibits superior electrochemical properties in DSSCs, thus yielding a remarkable photovoltaic performance (8.93%), which may originate from the existence of the appropriate Ni-Se dual vacancies, accelerating the I 3 − reduction. The work would provide a strategy for the synthesis of other non-noble metal compounds with unconventional dual vacancies to develop the application of DSSCs.
研究领域:
材料科学
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能源科学
·
化学
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DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 4
·752
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IF 5.3
Xiaoyan Bai,Tianqi Cao,Tianyu Xia,Chenxiao Wu,Menglin Feng,Xinru Li,Ziqing Mei,Han Gao,Dongyu Huo,Xiaoyan Ren,Shunfang Li,Haizhong Guo,Rongming Wang
Constructing a heterogeneous interface using different components is one of the effective measures to achieve the bifunctionality of nanocatalysts, while synergistic interactions between multiple interfaces can further optimize the performance of single-interface nanocatalysts. The non-precious metal nanocatalysts MoS2/NiSe2/reduced graphene oxide (rGO) bilayer sandwich-like nanostructure with multiple well-defined interfaces is prepared by a simple hydrothermal method. MoS2and rGO are layered nanostructures with clear boundaries, and the NiSe2nanoparticles with uniform size are sandwiched between both layered nanostructures. This multiple-interfaced sandwich-like nanostructure is prominent in catalytic water splitting with low overpotential for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) and almost no degradation in performance after a 20 h long-term reaction. In order to simulate the actual overall water splitting process, the prepared nanostructures are assembled into MoS2/NiSe2/rGO||MoS2/NiSe2/rGO modified two-electrode system, whose overpotential is only 1.52 mV, even exceeded that of noble metal nanocatalyst (Pt/C||RuO2~1.63 mV). This work provides a feasible idea for constructing multi-interface bifunctional electrocatalysts using nanoparticle-doped bilayer-like nanostructures.Keywords:nanoparticle-doped bilayer-like nanostructures;multiple interfaces;overall water splitting;dual function;non-precious metal catalysis
研究领域:
材料科学
·
电催化
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DOI
PubMed
高影响因子
Journal of Energy Storage
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2026
·
IF 9.8
Ting Feng,Fang Wang,Yuhe Wang,Kai Lan,Yong Liu,Haitao Wu,Fengzhang Ren
Heterostructure engineering, especially for those constructed by bimetallics with different sodium storage mechanisms, can efficiently improve the electrochemical activity and conductivity of the anode materials. Herein, the Bi 2 Se 3 /NiSe 2 heterostructure with dual mechanisms is designed via simple hydrothermal and selenization processes. The constructed hierarchical structure is composed of the two-dimensional nanoplates formed by Bi 2 Se 3 species, coupled with carbon-coated NiSe 2 nanoparticles. The abundant Bi 2 Se 3 /NiSe 2 heterointerfaces and effective active sites can accelerate the infiltration of the electrolyte and significantly improve the electrochemical activity. Notably, the designed Bi 2 Se 3 /NiSe 2 @C possesses a unique complementarity originating from the different sodium storage mechanisms and reaction voltages of the two components. This can realize sodium storage in the whole operating voltage range, resulting in a high sodium storage capacity. Furthermore, a built-in electric field effect induced by the Bi 2 Se 3 /NiSe 2 heterojunction can accelerate electronic transfer and sodium ion diffusion while enhancing the Na + adsorption energy. Reassuringly, a high initial capacity of 632.6 mAh g −1 at 0.5 A g −1 , exceptional cycling stability (322.9 mAh g −1 at 3 A g −1 over 1270 cycles), and rate capability can be achieved for Bi 2 Se 3 /NiSe 2 @C. This work supplies a new idea for the design and preparation of novel heterostructures with complementary reaction potentials.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Yang Xiang,Kun Xiong,Lijuan Sun,Jianfeng Song,Min Deng,Jia Chen,Haidong Zhang
Achieving efficiency and low-energy electrochemical hydrogen production by water splitting still faces significant challenges currently. Replacing the oxygen evolution reaction (OER) of water splitting with urea oxidation reaction (UOR) is one of the promising strategies to improve hydrogen production efficiency and reduce energy consumption. In this work, a NiSe 2 /NiTe@Ni 2.86 Te 2 heterostructure composite catalyst was successfully constructed on nickel foam via an in-situ synthesis strategy. Benefiting from the functional synergy and electronic redistribution between the NiSe 2 and NiTe components at the heterojunction interface, the NiSe 2 /NiTe@Ni 2.86 Te 2 exhibits excellent electrocatalytic performance for both the HER and UOR. When assembled into a urea electrolysis system as both cathode and anode, the NiSe 2 /NiTe@Ni 2.86 Te 2 requires only a voltage of 1.59 V to achieve a current density of 50 mA cm −2 in 1.0 M KOH with 0.3 M urea, which is significantly lower than that of overall water splitting (1.78 V). This system also demonstrates excellent stability and continuous operation in both real human urine and simulated urea environments, offering a new pathway for achieving highly energy-efficient hydrogen production while enabling the resource utilization of urea-rich wastewater.
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DOI
高影响因子
Applied Materials Today
·
2026
·
IF 7
Jian Li,Wenbin Luo,Yi Yu,Ruichen Xu,Zisheng Chao,JinCheng Fan
CNSeCNC was designed as cathode for aluminum batteries. • The CNSeCNC cathode exhibits superior electrochemical performance. • Dual-carbon modification and interface design strategies enhanced the performance. A porous CoSe 2 /NiSe 2 @C@NC cubic nanobox composite material is designed as a cathode material for aluminum batteries. This composite material consists of CoSe 2 /NiSe 2 anchored onto a three-dimensional porous carbon framework forming the core, and is coated with a nitrogen-doped carbon layer on its outer shell. The CNSeCNC cathode has an initial discharge capacity of 356 mAh/g and exhibits excellent capacity retention, retaining 217 mAh/g after 200 cycles. The Coulombic efficiency approaches 100% during prolonged cycling. Even at a high current density of 2.0 A/g, the material still maintains a capacity of 100 mAh/g. The CoSe 2 /NiSe 2 heterojunction generates interfacial lattice distortion that promotes efficient ion transfer. Meanwhile, the internal carbon network, external carbon coating and N-doping significantly boost electronic conductivity. Additionally, the carbon coating layer mitigates framework collapse and aggregation, ensuring superior structural stability throughout cycling. Owing to the improvements introduced through the double-carbon modification, CNSeCNC exhibits remarkable electrochemical performance as a cathode for ABs. Download: Download high-res image (158KB) Download: Download full-size image
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DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2020
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IF 3.807
Min Zhu,Qing Yan,Qi Lu,Yanqin Xue,Yongde Yan,Jinling Yin,Kai Zhu,Kui Cheng,Ke Ye,Jun Yan,Dianxue Cao,Guiling Wang
Strengthening electrical conductivity and multiple atomic interaction are benefit for improving activity of oxygen evolution reaction (OER). Herein, we synthesized Fe-Doped NiSe 2 nanospheres distribute on reduced graphene oxide sheets (Ni 0.7 Fe 0.3 Se 2 /rGO). The optimum ratio (30%) of rGO was ascertained by comparing the properties of catalysts with different rGO amounts. In alkaline electrolyte , the Ni 0.7 Fe 0.3 Se 2 /rGO-30% owns the better OER performance than those of Ni 0.7 Fe 0.3 Se 2 and NiSe 2 , ascribed to the unique architecture that Ni 0.7 Fe 0.3 Se 2 nanospheres decorate rGO. In the architecture, the rGO matrix increases conductivity, enlarges transfer rate of ions and electrons and promotes dispersion of Ni 0.7 Fe 0.3 Se 2 . In addition, multiple atomic interaction of Ni/Fe atoms and the synergistic effect between the Ni 0.7 Fe 0.3 Se 2 and rGO enable the compound to be an efficient OER catalyst. Through the rational analysis, Ni 0.7 Fe 0.3 Se 2 /rGO-30% hybrid is promising as an effective non-noble metal catalyst for OER application.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2022
·
IF 7.392
Xinyu Zheng,Shichao Sun,Yu Liu,Di Li,Dan Tian,Jianjun Zhu,Deli Jiang
Designing high-efficiency bifunctional catalysts for alkaline water splitting is well anticipated, but is a considerable challenge owing to sluggish kinetics of hydrogen/oxygen evolution reaction (HER/OER). Herein, chromium and nitrogen co-doped nickel selenide nanosheet arrays supported on nickel foam (Cr–NiSe 2 –N/NF) are rationally devised as an effective bifunctional electrocatalyst through an anion and cation dual-doping approach for overall water splitting. The as-obtained electrocatalysts displayed eminent catalytic performance for both OER (η 10 = 222 mV, η 50 = 310 mV) and HER (η 10 = 123 mV, η 100 = 256 mV) in 1 M KOH resolution. Furthermore, the Cr–NiSe 2 –N/NF as a bifunctional electrocatalyst only requires 1.59 V cell voltages at 10 mA cm −2 and exhibits excellent durability of 50 h. Experimental analyses and density functional theory (DFT) calculations prove that the simultaneous introduction Cr and N into NiSe 2 could synergistically adjust the electronic configuration and upshift the transition metal d-band center, which facilitates the enhancement of the adsorption capabilities towards reaction intermediates of HER and OER, thus enhancing catalytic activities. This work affords an efficient strategy for NiSe 2 -based electrocatalysts to improve electrocatalytic performance and motivates further research to construct highly active bifunctional electrocatalysts.
研究领域:
材料科学
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电化学
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DOI
高影响因子
APPLIED SURFACE SCIENCE
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2023
·
IF 6.7
Jianjun Zhu,Huamei Tong,Yu Liu,Jiahui Hu,Xinyu Zheng,Mengyue Qi,Deli Jiang
Exploring integrated regulation strategies to boosting electrocatalytic performance is essential to design more efficient and inexpensive OER catalysts. Herein, amorphous and crystalline (a-c) interface engineering and heteroatom doping are integrated to construct a novel electrocatalyst containing amorphous FeSeO x and crystalline Mo-doped NiSe 2 (denoted as FeSeO x /Mo-NiSe 2 ) via pseudocrystalline replication method and selenization treatment. The resultant FeSeO x /Mo-NiSe 2 electrocatalyst with 3D hierarchical nanoarchitectures of nanorod arrays covered by interlocking nanoblocks exposes more active sites and accelerated reaction kinetics. Furthermore, a-c interface engineering and heteroatom doping can synergistically enhance the intrinsic activity and charge transfer capability of NiSe 2 by decreasing the electron diffusion distance and flexibly modulating the electronic structure, which contributes to boost the oxygen evolution reaction (OER) performance. Consequently, the obtained FeSeO x /Mo-NiSe 2 achieves a low overpotential of 205 mV at 10 mA cm −2 , which outperforms many other transitions metal selenides electrocatalysts. Density functional theory (DFT) calculations demonstrate that the formation of an internal electric field between FeSeO x and Mo-NiSe 2 accelerates charge transport and optimizes the adsorption/desorption of oxygen-containing intermediates, thereby accelerating the reaction kinetics and improving the OER performance. This work serves as a point of reference for designing innovative metal selenides based electrocatalysts combining a-c interface engineering and heteroatom doping.
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DOI
高影响因子
JOURNAL OF CHEMICAL PHYSICS
·
2022
·Vol. 156
·期 1
·
IF 4.304
Lei Xueyan,Fu Zhengping,Xiang Bin,Lu Yalin
The low stability and poor activities of transition metal selenides (TMSs) in alkaline electrolyte limit their application in supercapacitors. Metal doping and hybridization of various electroactive materials with different properties are utilized to enhance the electrochemical performance of TMSs by optimizing their electronic structure and providing rich electrochemical active sites. Herein, we report a simple two-step hydrothermal method for the growth of Zn-doped NiSe 2 and Ni(OH) 2 nanocomposites on Ni foam [Zn–NiSe 2 /Ni(OH) 2 ]. The resulting material delivers high specific capacity (1525.8 C g −1 /564.7 mA h g −1 at 6 A g −1 and 1220 C g −1 at 10 A g −1 ) in a three-electrode system. A Zn–NiSe 2 /Ni(OH) 2 //porous carbon (PC) aqueous asymmetric supercapacitor (ASC) was built by utilizing Zn–NiSe 2 /Ni(OH) 2 as the positive electrode and PC as the negative electrode. This Zn–NiSe 2 /Ni(OH) 2 //PC ASC shows an energy density of 75.8 W h kg −1 at a power density of 916.1 W kg −1 and achieves a specific capacity retention of 100% after 25 000 cycles at 10 A g −1 . These results reveal that the Zn doping and the hybridization of NiSe 2 with Ni(OH) 2 can obtain impressive electrochemical properties in ASCs.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Ranxi Liang,Chaozhu Shu,Anjun Hu,Minglu Li,Zhiqun Ran,Ruixin Zheng,Jianping Long
The sluggish oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) kinetics greatly limit the development of lithium-oxygen (Li-O 2 ) batteries. Therefore, developing efficient electrocatalysts with high stability to boost oxygen involved reactions is particularly important for promoting the application of Li-O 2 batteries. Here, CoSe 2 @NiSe 2 heterostructure with distinct heterogeneous interfaces was fabricated via deliberate interface engineering. The formation of heterogeneous interface promotes local fine atomic array distortion that can act as an additional active site of ORR/OER. In addition, CoSe 2 @NiSe 2 with a distinct heterogeneous interface is favorable for the formation of built-in electric field during charging/discharging to enable electrodes with fast electrical transfer rates and reaction kinetics. Synergistically, the additional active sites brought by the fine atomic array distortion are highly conducive to the reversible formation and decomposition of the product. Undoubtedly, batteries with CoSe 2 @NiSe 2 exhibit excellent discharge/charge capacity (3530.1 mA h g −1 and 3485.6 mA h g −1 ), low overpotential (1.21 V) and excellent electrochemical stability for over 1200 h.
研究领域:
材料科学
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电化学
·
能源化学
·
纳米催化
·
电池技术
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DOI
高影响因子
CARBON
·
2026
·
IF 12.7
Guanghui Li,Lanrui Yin,Xingmei Duan,Changfu Zhuang,Yimo Xiang,Di Tian
A crystalline NiSe 2 /amorphous Ni 3 B 2 O 6 heterojunction on electrospun carbon nanofibers was constructed. • CCo@NiSe@NiBO as supercapacitor electrode materials exhibited a specific capacitance of 984.0 F g −1 . • CCo@NiSe@NiBO as a HER catalyst achieved overpotentials of 227 mV at 10 mA cm −2 and Tafel slopes of 91.2 mV dec −1 . • NiSe 2 /Ni 3 B 2 O 6 heterojunction with favorable electronic distribution led to the optimized adsorption energy. • CCo@NiSe@NiBO//AC device displayed an energy density of 35.58 Wh kg −1 and excellent cycling stability. Heterostructured engineering is driving advancements in supercapacitor and hydrogen evolution reaction (HER). In this work, a NiSe 2 /Ni 3 B 2 O 6 heterostructure on electrospun carbon nanofibers was fabricated as a dual-functional material. The NiSe 2 /Ni 3 B 2 O 6 heterojunction with favorable electronic distribution and the well-dispersed active sites supported by electrospun carbon nanofibers, facilitate conductivity, stability and reaction kinetics. CCo@NiSe@NiBO, belonging to an energy storage mechanism dominated by diffusion control, showed a specific capacitance of 984.0 F g −1 , and a capacitance retention of 42.68 % when the current density increases by 20 times, which exceeds that of many reported Ni based selenides and borides. Meanwhile, CCo@NiSe@NiBO as a HER catalyst achieved overpotentials of 227 mV at 10 mA cm −2 and Tafel slopes of 91.2 mV dec −1 . DFT calculations revealed its optimized adsorption energy of OH − for CCo@NiSe@NiBO. In addition, a CCo@NiSe@NiBO//active carbon hybrid device displayed an energy density of 35.58 Wh kg −1 as well as 91.88 % of its initial capacitance after 10,000 cycles. It was successfully integrated into the circuit. This work emphasizes the advantages of electrospun nanofibers in constructing heterostructures and establishes heterostructured engineering as a powerful strategy for advancing energy storage devices and catalysis. A NiSe 2 /Ni 3 B 2 O 6 heterojunction on carbon nanofiber with electronic modulation was fabricated for supercapacitor and hydrogen evolution reaction. Download: Download high-res image (328KB) Download: Download full-size image
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Shuang Zhao,Zili Yang,Shang Gao,Na Song,Su Yan,Shuhui Lv,Qi Zhang,Yun Zhu
Constructing highly active and robust bifunctional electrocatalysts for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) is crucial for overall water splitting. Herein, a hierarchical heterostructure is designed via a simple two-step electrodeposition process, in which an amorphous iron selenide (FeSe x ) layer bridges the catalytically active NiSe 2 layer and the NF substrate (FeSe x -NiSe 2 /NF). The surface oxidation of NiSe 2 results in the incorporation of SeO x species. The resulting NiSe 2 + SeO 4 surface provides effective active sites, thereby kinetically favoring the HER process. During OER, the surface NiSe 2 reconstructs into a γ-NiOOH phase, which serves as the catalytically active phase for OER. As a consequence, the FeSe x -NiSe 2 /NF electrode requires only 146 mV (HER) and 340 mV (OER) to deliver a current density of 500 mA cm −2 , while maintaining stable operation at this current density for 100 h. These findings offer insights into the superior catalytic performance of the hierarchical FeSe x -NiSe 2 /NF heterostructure, which is expected to foster the rational development of bifunctional electrocatalysts. Download: Download high-res image (421KB) Download: Download full-size image
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DOI
高影响因子
危险品化学品经营许可证（带存储）