MOLECULES
·
2025
·Vol. 30
·期 10
·2087
·
IF 4.6
Zhongmin Wan,Zhongkai Huang,Changjie Ou,Lihua Wang,Xiangzhong Kong,Zizhang Zhan,Tian Tian,Haolin Tang,Shu Xie,Yongguang Luo
The exploration of high-performance, low-cost, and dual-function electrodes is crucial for anion exchange membrane water electrolysis (AEMWE) to meet the relentless demand for green H2production. In this study, a heteroatom-doped carbon-cage-supported CoSe2@MoSe2@NC catalyst with a formicarium structure has been fabricated using a scalable one-step selenization strategy. The component-refined bifunctional catalyst exhibited minimal overpotential values of 116 mV and 283 mV at 10 mA cm−2in 1 M KOH for the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER), respectively. Specifically, rationally designed heterostructures and flexible carbonaceous sponges facilitate interfacial reaction equalization, modulate local electronic distributions, and establish efficient electron transport pathways, thereby enhancing catalytic activity and durability. Furthermore, the assembled AEMWE based on the CoSe2@MoSe2@NC bifunctional catalysts can achieve a current density of 106 mA cm−2at 1.9 V and maintain a favorable durability after running for 100 h (a retention of 95%). This work highlights a new insight into the development of advanced bifunctional catalysts with enhanced activity and durability for AEMWE.
研究领域:
电化学
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氢能
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材料科学
·
催化
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可再生能源
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DOI
PubMed
高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Yanjiao Li,Yechen Du,Aiyun Hu,Yingying Chen,Wenzheng Zhu,Jiaxiang Wang,Hongxun Yang,Hao Tian
Heterointerface engineering has emerged as a promising strategy to enhance the sluggish reaction kinetics and structural instability of conversion-type anode materials for sodium-ion batteries. Herein, a built-in electric field-enhanced CoSe 2 -NiSe 2 heterojunction embedded in flexible nitrogen-doped carbon nanofibers (CoSe 2 -NiSe 2 @CNFs) is constructed via electrospinning and selenization route. The heterointerface induces charge redistribution and accelerates ion diffusion, while the conductive and elastic CNF network effectively accommodates volume changes and maintains structural integrity. As a result, the CoSe 2 -NiSe 2 @CNFs anode achieves a high reversible capacity of 413.8 mAh g −1 at 0.2 A g −1 after 100 cycles and exhibits remarkable long-term cyclability, retaining 309.7 mAh g −1 after 1000 cycles at 1 A g −1 . The reversible conversion mechanism and interfacial stability are systematically validated through ex situ experimental measurements and DFT calculations, which confirm enhanced Na + adsorption and optimized ion transport kinetics at the heterointerface. Moreover, paired with a Na 3 V 2 (PO 4 ) 3 cathode in a full cell, it demonstrates stable cycling performance with low polarization. This work provides an integrated interface-confinement design strategy toward high-rate and a highly fatigue-resistant electrode with exceptional cycling stability.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Ning Wei,Lipeng Zhang,Kexin Li,Yanyan Xu,Fan Zhao,Yaqiu Sun
Developing cost-effective, efficient, and durable oxygen evolution reaction (OER) electrocatalysts is essential for advancing water splitting to produce clean hydrogen, enabling sustainable energy conversion while reducing reliance on noble metals. Herein, we present a feasible approach for synthesizing a trimetallic selenide catalyst Ni 3 Se 2 @CoSe 2 @FeSe (Ni–CoFe–Se) with ultra-thin nanosheets morphology via the facile selenization of NiCoFe Prussian blue analogues (PBAs) to enhance the OER performance. By leveraging the synergistic interactions within the trimetallic selenide heterostructures and the rationally engineering rich heterointerfaces and defect, the electronic structure of Ni–CoFe–Se was optimized and high-density active sites were generated. The optimal Ni–CoFe–Se catalyst demonstrates excellent OER performance, achieving a low overpotential of 176 mV at 10 mA cm −2 in alkaline conditions, and exhibiting a low Tafel slope of 59 mV·dec −1 . The developed catalyst also possesses excellent stability and long-term durability in electrocatalytic applications. This work offers an effective strategy for designing non-noble metal catalysts through the collaborative integration of chemical composition tuning and structural engineering.
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高影响因子
ADVANCED MATERIALS
·
2022
·Vol. 34
·期 43
·2205414
·
IF 32.086
Ya-Rong Zheng,ShaoJin Hu,Xiao-Long Zhang,Huanxin Ju,Zhenbin Wang,Peng-Ju Tan,Rui Wu,Fei-Yue Gao,Taotao Zhuang,Xiao Zheng,Junfa Zhu,Min-Rui Gao,Shu-Hong Yu
Electrochemical generation of hydrogen peroxide (H 2 O 2 ) by two-electron oxygen reduction offers a green method to mitigate the current dependence on the energy-intensive anthraquinone process, promising its on-site applications. Unfortunately, in alkaline environments, H 2 O 2 is not stable and undergoes rapid decomposition. Making H 2 O 2 in acidic electrolytes can prevent its decomposition, but choices of active, stable, and selective electrocatalysts are significantly limited. Here, the selective and efficient two-electron reduction of oxygen toward H 2 O 2 in acid by a composite catalyst that is composed of black phosphorus (BP) nailed chemically on the metallic cobalt diselenide (CoSe 2 ) surface is reported. It is found that this catalyst exhibits a 91% Faradic efficiency for H 2 O 2 product at an overpotential of 300 mV. Moreover, it can mediate oxygen to H 2 O 2 with a high production rate of ≈1530 mg L −1 h −1 cm −2 in a flow-cell reactor. Spectroscopic and computational studies together uncover a BP-induced surface charge redistribution in CoSe 2 , which leads to a favorable surface electronic structure that weakens the HOO* adsorption, thus enhancing the kinetics toward H 2 O 2 formation.
研究领域:
材料科学
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电化学
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催化化学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2018
·Vol. 29
·期 14
·12300-12305
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IF 2.324
Zhou Jie,Liu Yundan,Zhang Zhen,Li Jun,Qi Xiang
In this study, a novel structure of two-dimensional cobalt selenide (CoSe 2 ) nanosheets integrating on three-dimensional carbon fibers (CF) have been successfully synthesized by using a facile method. The CoSe 2 has been characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD) patterns. The SEM images of the CoSe 2 exhibit sheet-like morphologies densely and uniformly grew on the entire surface of the CF and the XRD result reveals the as-prepared CoSe 2 are pure and crystalline characteristics of orthorhombic phase. Such morphological features may not only provide large surface area for exposing more active sites, but also benefit deep electrolyte penetration for electrons and electrolyte ions. Electrochemical experiments demonstrate the as-prepared CoSe 2 nanosheets-CF possesses 10 mA/cm 2 at HER overpotential of 0.118 V, as well as a Tafel slope of 53.2 mV/dec (in 0.5 M H 2 SO 4 ). Photoelectrochemical measurements indicate that the current density of CoSe 2 nanosheets significantly increased under light irradiation. The present work provides an attractive non-noble-metal electrocatalyst for highly efficient production of H 2 toward water splitting.
研究领域:
材料科学
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电化学
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能量转换
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纳米材料
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DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2019
·
IF 4.084
Xiaojiao Fang,Zegao Wang,Shifei Kang,Liwei Zhao,Zaixing Jiang,Mingdong Dong
CoSe 2 is considered as a promising candidate among non-noble metal electrocatalysts for the hydrogen evolution reaction (HER) due to its intrinsic metallicity and low Gibbs free energy for hydrogen adsorption. Recently, the hexagonal CoSe 2 becoming increasingly popular owing to its chemically favorable basal plane , which provides more active sites, but remains limited by the poor stability. In this study, we design a small-molecule-amine-assisted hydrothermal method to in situ anchor the hexagonal CoSe 2 nanosheets (NSs) on nitrogen-doped reduced graphene oxides (RGO) as an advanced electrode material for HER. Due to the existence of abundant functional groups and high specific surface area of RGO, the hexagonal CoSe 2 NSs could be stably formed on RGO. As a result, only a small overpotential of 172 mV is needed for the optimized sample to drive a current density of 10 mA cm −2 in 0.5 M H 2 SO 4 and the Tafel slope is 35.2 mV dec −1 , which is comparable with the state-of-the-art Pt catalyst (32.3 mV dec −1 ). Therefore, the facile and low-cost method for synthesizing hexagonal TMDs with robust electrical and chemical coupling developed in this work is promising in promoting the large-scale application of non-precious electrocatalysts.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2023
·
IF 4.5
Xiaojuan Wang,Cheng Qian,Tian Zou,Hao Ding,Feng Jiang,Huiyu Li,Haijing Cao,Zebo Fang,Yan Xu,Jinkun Liu,Yanyan Zhu
In this study, CoSe 2 /NC composites with stable dodecahedral structures were prepared by a simple one-step carbonization-selenization method using ZIF-67 as the precursor, and the effect of annealing time on their morphology and properties was investigated. SEM and TEM characterization results showed that the material with an annealing time of 1 h had the most stable framework structure and complete selenization. Under a three-electrode system with 2.0 M KOH as the electrolyte, CoSe 2 /NC-1 possesses a high capacity of 554.4F/g at 1 A/g and excellent cycling stability (92% capacity retention after 21,000 cycles). In addition, a flexible solid-state supercapacitor was assembled with CoSe 2 /NC-1 as the positive electrode and AC as the negative electrode. The power density was 800 W/Kg at 1 A/g, and the cycling stability was tested at 91.53% after 6000 cycles at 2 A/g. The flexible solid-state supercapacitors were tested for suppleness, and their voltage could still reach 1.6 V with stable specific capacity and light up LED bulbs when measured at 0°, 90° and 180°. Undoubtedly, the CoSe 2 /NC-1 material prepared in this study exhibits promising electrochemical characteristics, making it a viable candidate for implementation in flexible solid-state supercapacitors.
研究领域:
材料科学
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电化学
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产品关联
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
ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Shuai Wan,Weiyang Jin,Xiaoliang Guo,Jing Mao,Lekai Zheng,Jianling Zhao,Jun Zhang,Hui Liu,Chengchun Tang
Developing low-cost, high performance, stable non-noble bifunctional electrocatalysts for overall water splitting is of great importance for future energy supplement. Despite recent advances in the synthesis of transition metal selenide nanostructures, the fabrication of porous nanosheet based binder-free electrode with more active sites remains a major challenge. Herein, the self-templating construction of a porous CoSe2 nanosheet array on carbon cloth (p-CoSe2/CC) has been reported by vapor selenizing the preprepared α-Co(OH)2 nanosheet array precursor. Arising from large active surface area, fast diffusion of generated gas and strong structural stability, the as-obtained p-CoSe2/CC can serve as an efficient bifunctional electrocatalyst for both OER and HER in alkaline electrolyte, with a current density of 10 mA cm–2 at overpotential of 243 mV for OER and 138 mV for HER, respectively. Moreover, when p-CoSe2/CC is assembled as an alkaline electrolyzor, it only needs a cell voltage of 1.62 V at 10 mA cm–2 and shows excellent long-term stability of 20 h. The versatile fabrication strategy with self-templated porous structure proves a new way to construct other advanced metal selenide for energy conversion and storage.
研究领域:
材料科学
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能源化学
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DOI
高影响因子
Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 37
·21340-21346
·
IF 12.732
Yuan Ji,Yundan Liu,Bin-Wei Zhang,Zhongfei Xu,Xiang Qi,Xun Xu,Long Ren,Yi Du,Jianxin Zhong,Shi Xue Dou
Hydrogen peroxide (H2O2) is widely used as a green oxidant for varying applications. Electrosynthesis is an economical and environmentally-friendly strategy to directly produce H2O2. Its practical production is hindered, however, by the lack of highly efficient and selective as well as low-cost electrocatalysts. Transition metal chalcogenide materials have been proved to be good catalysts for the oxygen evolution reaction, but their selectivity towards conversion of O2 to H2O2 remains unsatisfactory. In this work, 3 atomic-layer defect-rich CoSe2 nanosheets have been successfully grown on carbon cloth as a high performance electrocatalyst. The morphology of CoSe2 can be tuned by regulating the wettability of the growth substrate. The atomic-layer CoSe2 nanosheets showed unprecedented 92% selectivity towards H2O2 production in alkaline solutions, and the yields of H2O2 in alkaline and acidic solutions were 1227.7 mg L−1 h−1 and 894 mg L−1 h−1, respectively. The high efficiency and selectivity originate from the rich defects in the atomic-layer CoSe2 nanosheets, which can accelerate the adsorption of OOH by the exposed Co defect sites.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Yun Xing,Shan Zhao,Jiaying Wu,Xin Tang,Yu Zhang,Zhirong Zou,Ke Huang,Xiaoli Xiong
Designing non-noble metal oxygen evolution catalysts with outstanding catalytic activity is crucial for realizing cost-effective water splitting. In this paper, nitrogen-doped carbon-encapsulated polyhedral yolk-shell nanostructure bimetallic selenide (ZnSe@CoSe 2 /N-C) electrocatalyst was successfully prepared by high-temperature selenization strategy using ZIF-8 @ZIF-67 as the framework. The specially designed nitrogen-doped core-shell structure has the advantages of high specific surface area and rough porous surface, which can expose more active sites and facilitate the transfer of electrons and ions on the electrode surface. The high conductivity of ZnSe, CoSe 2 nanoparticles and the synergistic effect of bimetal increase the electrochemical activity and electron mobility of the composite. ZnSe@CoSe 2 /N-C catalyst exhibits outstanding oxygen evolution reaction performance at 1.0 M KOH, which the overpotential is down to 170 mV at 10 mA cm −2 . Furthermore, ZnSe@CoSe 2 /N-C also shows well durability and long-term stability (>113 h). This experiment might open a new path for fabrication of low-cost non-noble metal selenide electrocatalysts for oxygen evolution.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Qianqun Xu,Lijuan Peng,Kaifen Luo,Jiahuan Zhong,Chengkai Zhang,Dingsheng Yuan
A flexible solid rechargeable Zn-air battery for advanced energy conversion and storage has extensive applications in portable electric sources, wildlife rescue and flexible wearable systems. Herein, the CoSe 2 nanoparticles anchored on cobalt-embedded N -doping carbon nanoplates (CoSe 2 /CoNC) is developed as a highly active bifunctional catalyst via pyrolysis and selenization of bimetallic zeolitic imidazolate frameworks containing Zn and Co. The introduction of inactive Zn generates strong electrochemically active surface areas due to the synergistic effect between CoSe2 nanoparticles and CoNC matrix. Further, CoSe2/CoNC exhibits prominent Zn–air battery performance and even outperforms the commercially available noble-metal catalysts. Notably, a high-rate flexible Zn-air battery enabled by an alkaline composite polyacrylic acid-carboxymethyl cellulose electrolyte delivers the open-circuit potential of 1.51 V. The battery offers high wearability and performs very well under various conditions, such as soaking, drilling and sewing.
研究领域:
材料科学
·
电化学
·
能源转换与存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）