JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2023
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IF 10.9
He Zhou,Jingrui Hou,Limin Zhang,Dezhi Kong,Hui Wang,Longhui Zeng,Zhiwei Ren,Tingting Xu,Ye Wang
Despite the rapid advances in electrocatalysts based on two-dimensional (2D) transition metal dichalcogenides (TMDs) materials, they are subject to serious aggregation, poor conductivity and the presence of inactive basal planes. Herein, we have successfully demonstrated the in-situ construction of NiSe 2 –MoSe 2 heterostructure arrays on carbon cloth (NiSe 2 –MoSe 2 /CC) by a facile two-step hydrothermal process. The presence of the synergistic effect in the heterostructures effectively optimizes the poor conductivity and hydrophilicity, and thus enables fast electron transfer, leading to enhanced electrochemical reaction. Furthermore, density functional theory calculations reveal that the electrons redistribution at the heterojunction interface and the reduced Gibbs free energy of hydrogen adsorption for hydrogen evolution reaction (HER)/the Gibbs free energy change value of rate-determining step for oxygen evolution reaction (OER), thus enhancing the HER/OER catalytic activity. Importantly, the device displays a good performance with a low overpotential of 98 and 310 mV for HER and OER, respectively, and a low cell voltage of 1.59 V for its corresponding electrolyzer (10 mA cm −2 ). This work presents the high-performance water splitting of bifunctional electrocatalysts based on 2D TMDs materials and offers a novel design concept of interface engineering.
研究领域:
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 Materials Chemistry A
·
2019
·Vol. 7
·期 7
·3317-3326
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IF 10.733
Menglei Yuan,Sobia Dipazir,Meng Wang,Yu Sun,Denglei Gao,Yiling Bai,Min Zhang,Peilong Lu,Hongyan He,Xiangyang Zhu,Shuwei Li,Zhanjun Liu,Zhaopeng Luo,Guangjin Zhang
The oxygen evolution reaction (OER) is a half reaction of electrochemical water splitting that suffers from a kinetically sluggish four-electron process, and it is regarded as the efficiency-limiting step in water splitting. Herein, heterostructures of CoSe (cobalt selenide) nanoparticles and MoSe2 (molybdenum selenide) nanosheets (CoSe/MoSe2 hybrids) were fabricated through a non-metal-induced growth method. Due to the increase in the effective specific area and the electron transfer ability caused by the formation of the heterogeneous interface, the obtained CoSe/MoSe2 hybrids show superior OER performance (η = 262 mV at 10 mA cm−2) and long-term stability (20 h for continuous testing) as compared to pure CoSe, MoSe2 and physically mixed CoSe and MoSe2. Schematic energy band diagrams derived from ultraviolet photoelectron spectroscopy results further confirmed the electronic modulation between CoSe and MoSe2 and revealed that the d-band center of CoSe/MoSe2 hybrids moved closer to the Fermi level, giving rise to high charge carrier density and low intermediate adsorption energy as compared to CoSe and MoSe2. This work provides some insight into the design and synthesis of heterostructured nanomaterials from the MOF precursors.
研究领域:
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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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
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Batteries-Basel
·
2023
·Vol. 9
·期 6
·307
·
IF 4
Deng Li,Huinan Pan,Zhonghai Lin,Xiulian Qiu,Xinyu Zhao,Wei Yang,Wenzhi Zheng,Fengming Ren
Compared with monometallic selenides, heterogeneous bimetallic selenides have rich phase boundaries and superior electrical conductivity. ZnSe/CoSe2composites were prepared by introducing Zn metal and using ZIF-8/67 as the precursor through the synergistic effect between Zn and Co after selenification. The electrocatalytic conversion of polysulfide is accelerated by ZnSe through chemical adsorption and the catalytic effect. The conductive CoSe2surface provides a rapid diffusion path for lithium ions, accelerating the conversion of the polysulfide. On the basis of their individual strengths, ZnSe and CoSe2can jointly promote the smooth adsorptive–diffuse–catalytic conversion process of polysulfide and induce the growth of lithium sulfide around its heterogeneous interface, thus enhancing the electrochemical performance of the lithium–sulfur battery cathode materials. The ZnSe/CoSe2–S electrode, at the optimal Zn-to-Co ratio of 1:1, has a 790.06 mAh g−1initial specific capacity at 0.2 C and excellent cycling stability at 1 C. After 300 cycles, the final capacity is 300.85 mAh g−1, and the capacity retention rate reaches 82.71%.
研究领域:
材料科学
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能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2021
·Vol. 13
·期 12
·6241-6247
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IF 7.79
Huan Wang,Zhonghua Sun,Xiaoran Zou,Jianhai Ren,Chun-yang Zhang
The rational construction of heterointerfaces in hollow nanohybrids is considered as a promising and challenging approach for enhancing their electrocatalytic performance. Herein, we demonstrate the synthesis of CoFe2Se4/NiCo2Se4 hybrid nanotubes (CFSe/NCSe HNTs) with open ends and abundant heterointerfaces. The CFSe/NCSe HNT hybrid nanotubes are obtained by using NiCo2-aspartic acid nanofibres (NiCo-Asp NFs) as the templates which can be converted to the CFSe/NCSe HNTs via proton etching, three metal coprecipitation, Kirkendall effect and anion-exchange reaction. The CFSe/NCSe HNTs may function as the oxygen evolution reaction (OER) electrocatalysts, and they exhibit a low overpotential of 224 mV at a current density of 10 mA cm−2 and outstanding stability with only 1.4% current density change even after 15 h, superior to those of the reported single-component counterparts. The obtained density of states and differential charge density confirm the existence of a heterointerface which can induce the accumulation of electrons at the interface of CFSe–NCSe and consequently increase the carrier density and electrical conductivity of the CFSe/NCSe HNTs. This research provides a new avenue for the fabrication of hollow nanohybrids with heterointerfaces.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IONICS
·
2021
·Vol. 27
·期 8
·3327-3337
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IF 2.817
Xiao Dejun,Liu Suqin,Zhao Kuangmin,Ye Guanying,Su Yuke,Zhu Weiwei,He Zhen
Ultrasmall nitrogen-doped carbon-coated CoSe 2 /ZnSe nanospheres (CoSe 2 /ZnSe@C nanospheres) are fabricated by direct selenization of a delicately designed Co 1.6 Zn 0.4 -(benzimidazole) 4 metal–organic framework (MOF) nanosheet precursor and used as the anode materials in sodium-ion batteries (SIBs). The fabricated CoSe 2 /ZnSe@C nanospheres deliver a remarkable rate performance (395 mAh g −1 at 0.1 A g −1 and 341 mAh g −1 at 5.0 A g −1 ) and excellent long-term durability (346 mAh g −1 after 2500 cycle at 2.0 A g −1 ). The superior Na storage performance of the fabricated CoSe 2 /ZnSe@C nanospheres could be mainly attributed to their ultrasmall particle sizes and the phase boundaries between CoSe 2 and ZnSe, which improve the kinetics of the electrode, relieve the volume change during the charge/discharge process, and provide extra Na + storage sites. This work opens up possibilities to fabricate metal selenide–based hybrid materials with desired nanostructures and compositions from rationally designed multimetal MOF precursors for high-performance anode materials in SIBs.
研究领域:
材料科学
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能源存储
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2016
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IF 4.758
Xiaohong Xia,Xuan Shen,Yonglin Du,Weichun Ye,Chunming Wang
Cellular glutathione plays critical roles in protecting neuronal cells against dopamine induced oxidative stress and electrophilic cellular damage; inspired by above mentioned properties of glutathione, we used glutathione as a polymerization inhibitor to develop a dopamine biosensor which can be used in alkaline environment. The detection of dopamine in alkaline environment has been challenged by its polymerization for many years, glutathione as a kind of thiol can be used to prevent the polymerization of dopamine in alkaline environment by eliminating the electrophilic quinone molecules needed during the polymerization. In order to enhance the electrochemical performance of electrode, Ag 2 Se/MoSe 2 composite with large exposed surface areas was synthesized, which improved the sensitivity and stability for dopamine detection. The low oxidation peak potential for dopamine, 0.04 V vs. SCE, indicats that glutathione can realize the electrooxidation of dopamine at lower potential in alkaline environment. In this study, by introducing glutathione to inhibit the dopamine polymerization, sensitive and stable detection of dopamine can be achieved at pH 8.5 based on the Ag 2 Se/MoSe 2 /GCE.
研究领域:
分析化学
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神经科学
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电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Hui Zhang,Jiatong Li,Yajun Zhu,Xiangbing Zeng,Chengbing Chen,Huigang Zhang,Jinyun Liu
Large theoretical capacity silicon (Si) anode for lithium-ion (Li-ion) battery is hindered by its large volumetric change and structural collapse during cycling. Here, we report a strategy that in-situ embedding Si nanoparticles (Si NPs) into flower-like selenides, then coating with carbon layer, forming a Si@ZnSe/CoSe@C anode. Engineered frame structure provides an optimized condition for alleviating volumetric of Si, and thereby improving stability. Additionally, carbon layer not only immobilize Si NPs, but also improves the conductivity. The Si@ZnSe/CoSe@C anode shows a capacity of 563 mAh g −1 after 150 cycles at 0.1 A g −1 , and a Coulombic efficiency as high as 99.4 % after cycling 800 times at 0.2 A g −1 . A 50 °C-tolerable performance is also obtained, showing a potential for applications. We believe that the composite design presented here offers a general method for developing high-performance energy-storage materials even though they intrinsically have large-volumetric change and low conductivity.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Jinqi Xie,Meng Han,Xiangliang Zeng,Dasha Mao,Haitong Li,Xiaoliang Zeng,Ruiheng Liu,Linlin Ren,Rong Sun,Jianbin Xu
Flexible thermoelectric (TE) devices have great potential in wearable electronics, but there is great challenge to realize robust TE device with high performance via feasible integration process. Herein, based on precisely printed copper patterns, a flexible p Cu 2 Se- n Ag 2 Se TE device is initially realized by in situ ion exchange reaction. The as-prepared Cu 2 Se and Ag 2 Se films possess typical hierarchical defects including atomic scale vacancies, the nanosheet fragments and microscale porous structure, which could significantly scatter phonons in wide frequency range. Accordingly, ultra-low thermal conductivity (Cu 2 Se: 0.13 W m −1 K −1 ; Ag 2 Se: 0.15 W m −1 K −1 ) and optimal ZTs (Cu 2 Se: 0.5; Ag 2 Se: 0.7) are achieved. Meanwhile, the as-fabricated p Cu 2 Se- n Ag 2 Se TE device exhibits an excellent power density of 13.4 W m −2 at a temperature gradient of 40 K, which is among the highest values of printed in-plane film devices. Furthermore, the good adhesion between TE films and porous PI substrate endowed excellent flexibility and stability of p Cu 2 Se- n Ag 2 Se devices.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Chunhui Wang,Haozhe Qin,Liang Cao,Dong Wang,Jiafeng Zhang,Bao Zhang,Xing Ou
Metal selenides possess tremendous potentials due to their high specific capacity for potassium storage, however the sluggish K + diffusion and polyselenide dissolution always result in inferior electrochemical performance. Herein, metal selenide (CoSe 2 ) nanorods with engineered exposed plane incorporated in reduced graphene oxide nanosheet (sc-CoSe 2 @rGO) are fabricated. In the crystalline interior, such single-crystal structure can provide unhindered path for the fast K + transfer. Besides, at the crystalline surface, the mainly exposed (011) facet with Co 2+ rich state can induce the catalytic function with enormous reaction sites, which effectively transform the polyselenide to selenide with an enhanced selenium utilization. As expected, the as-prepared sc-CoSe 2 @rGO delivers satisfied specific capacity, prominent rate property, and superior cyclic stability (a reversible capacity of 157.7 mAh g −1 at high rate of 3.0 A g −1 after 600 cycles). This single-crystalline architecture design for intrinsic K-ion diffusion and surficial optimization is pioneeringly investigated, which provides a new insight into designing and fabricating metal-ion storage materials.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 30
·16212-16223
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IF 14.511
Yan Zhao,Sichao Wang,Fei Ye,Wenjie Liu,Jiabiao Lian,Guochun Li,Huanting Wang,Linfeng Hu,Limin Wu
Metal selenides are promising candidates as electrode materials for advanced supercapacitors. However, their performance is still limited due to the insufficient utilization of active materials and the low porosity of electrodes. Herein, a facile strategy is reported for in situ growth of hierarchical mesoporous selenium@bimetallic selenide quadrilateral nanosheet arrays on various conductive substrates using two-dimensional bimetal porphyrin paddlewheel framework (MCo–TCPP, TCPP = tetrakis(4-carboxyphenyl)porphyrin; M = Ni, Zn) nanosheets as templates. The as-obtained Se@(NiCo)Se2 sample provides a suitable electrolyte environment to promote fast faradaic reactions, which endows the carbon cloth-supported electrode with a high specific capacity of 240 mA h g−1 at 2 A g−1, high rate capability, and remarkable cycling stability (83.2% after 5000 cycles at 20 A g−1), superior to those of most well-known CoSe2-and MOF-based systems. The high availability of electrochemically active sites/interfaces along with the strong intercomponent synergy of (NiCo)Se2, selenium, and the carbon skeleton enable the fast charge transfer kinetics required for superior charge-storage capabilities. Density functional theory simulations demonstrate that doping Ni in (NiCo)Se2 could reduce the adsorption free energy of OH− and regulate the electrical properties. A unique Se@(NiCo)Se2//AC flexible asymmetric supercapacitor device delivers high specific capacitance, negligible capacitance decay, excellent coulombic efficiency, and outstanding energy and power densities (49.4 W h kg−1@787.3 W kg−1 and 13 882.4 W kg−1@23.6 W h kg−1). This study also provides a neoteric perspective on the construction of mesoporous selenium@bimetallic selenide nanoarrays for energy-related applications.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2020
·
IF 3.204
Peng Zhou,Mingyu Zhang,Qizhong Huang Zhang,Zean Su,Yafeng Wang,Xiaodong Wang,Yueli Hu,Yuhao Li,Zhenghao Guo
To realize high capacity and long cycling stability for lithium-ion batteries (LIBs), a new type bimetal selenides MnSe/ZnSe encapsulated in nitrogen-doped carbon nanofibers (MZS@N-CNFs) have been fabricated for lithium ion battery via electrospinning and selenization processes. Synergistic effect of the ultrafine bimetal selenides nanoparticles provides a high specific capacity while the 1D carbon nanofibers can shorten the ions pathways and improve the conductivity. When assembled as anodes for LIBs, the MZS@N-CNFs demonstrate an extremely high capacity of 1369.1 mA h g −1 and excellent cycle stability of 826.1 mA h g −1 at 1 A g −1 after 300 cycles.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）