JOURNAL OF POWER SOURCES
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2018
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IF 6.945
Wei Xing,Dongfeng Du,Tonghui Cai,Xiaochen Li,Jin Zhou,Yongming Chai,Qingzhong Xue,Zifeng Yan
Aluminum ion batteries are attractive new generation energy storage devices in large-scale energy applications such as grid storage due to its low cost, high safety and three-electron-redox properties potentially leading to high capacity. Cathode materials with both high capacity and rate performance are urgently needed to fulfill such applications. Here, a three-dimensional carbon-encapsulated cobalt selenide nanoparticles are developed from metal organic frameworks as a novel aluminum ion batteries cathode. The cathode material delivers an unprecedented capacity of 427 mAh g −1 at 1000 mA g −1 with two high discharge plateaus at 1.0 V and 1.9 V (equivalent to energy density of 424 Wh kg −1 ). And even at a very high current density of 5000 mA g −1 , the initial discharge capacity of cathode electrode can reach 254.8 mAh g −1 , and a high capacity of 62.4 mAh g −1 is retained after 100 cycles. Such outstanding performance are attributed to the well-defined nanostructure of three-dimensional carbon-encapsulated cobalt selenide cathode material. This work represents a significant step forward to prepare advanced cathode materials for aluminum ion batteries.
研究领域:
材料科学
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能源存储技术
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2018
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IF 6.945
Zonghua Pu,Ibrahim Saana Amiinu,Fangliang Gao,Zhenzhu Xu,Chengtian Zhang,Wenqiang Li,Guoqiang Li,Shichun Mu
In this study, we adopt an efficient strategy to replace conventional oxygen evolution reaction with small molecules thermodynamically more readily oxidizable species. Hydrazine, ethanol, glycol and urea can be easily oxidized than oxygen evolution reaction, but the lack of low-cost and efficient small molecules oxidation reaction electrocatalysts places constraints on their development. Herein, a flexible electrode based on cobalt selenide nanosheet arrays supported on carbon fiber paper (CoSe/CFP) is prepared through a two-step approach. The as obtained CoSe/CFP is efficient for small molecules electrooxidation reaction at the anode and hydrogen evolution reaction at the cathode. Due to the easier oxidation of hydrazine than other species, the hydrazine oxidation reaction (HzOR) is investigated in details. An assembled electrolytic cell based on the hydrazine oxidation reaction and hydrogen evolution reaction (HER) electrodes provides a current density of 50 mA cm -2 at a cell voltage of 0.5 V, long-term durability and 98% Faradaic efficiencies. This novel strategy can greatly lower the imput cell voltage than that under full water splitting (1.6–2.0 V) for cost-effective and energy-saving hydrogen production .
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
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2024
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IF 5.8
Huifang Lv,Haibo Rao,Zhiyu Zhou,Yang Zhao,Hualiang Wei,Zexiang Chen,Xiao Zhang,Yunlu Dai,Yanli Gong,Yan Wang
Improving the energy storage capabilities of aqueous alkaline supercapatteries relies heavily on the development of high-performance anode materials. Here, we presented a one-step composite molten salts method for the preparation of cobalt selenium hydroxide and Bi 2 O 2 Se heterostructure composites (CoSe(OH)/Bi 2 O 2 Se). The composite capitalizes on the advantageous interlayer properties of two-dimensional (2D) layered Bi 2 O 2 Se, connected via weak Van der Waals forces, alongside the high theoretical specific capacity of cobalt hydroxide derived from cobalt selenium hydroxide. This synergy facilitates efficient ion transport, thus exhibiting remarkable electrochemical characteristics. Specifically, CoSe(OH)/Bi 2 O 2 Se demonstrates a great specific capacity of 313.6 mAh/g at 1 A/g, significantly outperforming pure Bi 2 O 2 Se nanosheets. Moreover, CoSe(OH)/Bi 2 O 2 Se exhibits remarkable rate capability with 63.8% capacitance retention at sufficiently high current density (20 A/g), and excellent cycle performance that the capacitance remains is 70.3% after 1000 cycles of GCD testing. Additionally, ex-situ XRD analysis of CoSe(OH)/Bi 2 O 2 Se at different charge and discharge stages provides further insights into its energy storage mechanism. Furthermore, the NiAl-Cl LDH// CoSe(OH)/Bi 2 O 2 Se device demonstrates high power density and energy density. These results validate the feasibility of enhancing the electrochemical performance of 2D Bi 2 O 2 Se layered materials through the incorporation of active and cost-effective transition metal oxides/hydroxides, highlighting the tremendous potential of CoSe(OH)/Bi 2 O 2 Se as a negative electrode material for aqueous alkaline supercapattery.
研究领域:
材料科学
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电化学
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能源存储
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产品关联
DOI
高影响因子
Sustainable Materials and Technologies
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2023
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IF 9.6
Han Chen,Tiange Gao,Mingxia Wu,Xuefei Wei,Anbao Yuan,Jiaqiang Xu
Transition metal oxides or selenides have been widely used in electrode materials for supercapacitors. And the formation of heterostructures between the two different materials can further realize high-performance electrode materials and high-energy density supercapacitor. Therefore, in our work, the novel reaction method of incomplete selenization makes the electrode material have both oxides and selenides, and the prepared heterostructured composite material has excellent electrochemical performance. Herein, the nickel foam (NF)-supported flower-shaped manganese‑cobalt-oxide-selenide composite heterostructures self-assembled from the heterogeneous nanorods consisting of MnCo 2 O 4.5 , CoSe, and MnSe 2 components were designed and fabricated via a facile, adjustable, incomplete selenization of the hydrothermal derived manganese‑cobalt hydroxide (Mn-Co-OH) precursor (named as Mn-Co-O-Se-x, where x represents the feed mass ratio between selenium powder and precursor, which is 5, 10, and 20, respectively). The optimized Mn-Co-O-Se-5 composite exhibits a high specific capacitance of 3424 F g −1 at a current density of 1 A g −1 . After 10,000 cycles at 20 A g −1 , the discharge capacitance is 103.7% of the first value, demonstrating superior cycle stability. Moreover, the assembled Mn-Co-O-Se-5//activated carbon (AC) asymmetric supercapacitor (ASC) device delivers maximum energy density and power density at 112 Wh kg −1 and 16,000 W kg −1 and shows good cycling stability with a capacitance retention of 98.7% after 10,000 cycles at 10 A g −1 , demonstrating promising prospects for application in 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 SURFACE SCIENCE
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2023
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IF 6.7
Jian Feng,Shao-hua Luo,Peng-wei Li,Yi-cheng Lin,Lin Zhang,Qing Wang,Ya-hui Zhang
Hybrid hierarchical nanostructures have a significant impact on engineering novel anode materials for boosting the performance of sodium-ion batteries (SIBs). Here, a hierarchical porous structure constituted by CoSe nanocrystals embedded in nitrogen-doped carbon polyhedron with the embellishment of 2H-MoSe 2 nanosheets (CoSe@NC/MoSe 2 ) is fabricated by a metal-organic frameworks (MOFs)-engaged strategy and subsequent selenization reaction. The presence of N-doped carbon matrix and bimetallic selenides significantly enhance electronic and ionic diffusion kinetics. In addition, the porous structure provides short Na + diffusion distance and guarantees outstanding structural stability upon cycling. Due to these distinctive features, the CoSe@NC/MoSe 2 composite displays superior cyclability of 305.9 mAh g −1 up to 1500 loops at 5.0 A g −1 and exceptional rate property of 286.1 mAh g −1 at 10.0 A g −1 for sodium storage. When matched with Na 3 V 2 (PO 4 ) 3 @C cathode, a SIB full cell can maintain a high invertible capacity of 78.9 mAh g −1 total over 100 loops at 0.5 A g −1 . Moreover, the multistep conversion reactions mechanism is further identified by kinetics analysis, and ex situ and in situ characterization.
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
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Haonan Wang,Kaifeng Yu,Pengtao Wang,Pengcheng Jia,Yongzhi Yuan,Ce Liang
Metal-organic frameworks (MOFs) have the advantages of controllable chemical properties, rich pore structures and reaction sites and are expected to be high-performance anode materials for the next generation of potassium-ion batteries (PIBs). However, due to the large radius of potassium ions, the pure MOF crystal structure is prone to collapse during ion insertion and processing, so its electrochemical performance is quite limited. In this work, a hollow carbon sphere-supported MOF-derived Co/CoSe heterojunction anode material for potassium-ion batteries was developed by a hydrothermal method . The anode has high potassium storage capacity (461.9 mA h/g after 200 cycles at 1 A/g), excellent cycling stability and superior rate performance. It is worth noting that the potassium ion storage capacity of the anode material shows a gradual upward trend with the charge–discharge cycle, which is 145.9 mA h/g after 3000 cycles at a current density of 10 A/g. This work demonstrates that MOF-derived CoSe anodes with high capacity and low cost may be promising candidates for the introduction of potassium ion storage.
研究领域:
材料科学
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能源存储
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
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2019
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IF 7.467
Yongjian Li,Xiufeng Liu,Hansheng Li,Daxin Shi,Qingze Jiao,Yun Zhao,Caihong Feng,Xiaoping Bai,Hongxia Wang,Qin Wu
A novel hierarchical structural hybrid of nitrogen-doped porous carbon (NPC) coated hollow CoSe nanoparticles anchored on nitrogen-doped carbon nanotubes (NCNTs) is enabled from the zeolitic imidazolate framework ZIF-67. In this composite, polypyrrole-derived NCNTs as a nitrogen-rich template effectively alleviates the irreversible aggregation of ZIF-67 derivatives. The hollow CoSe embedded NPC nanoparticles(CoSe@NPC) as high catalytic activity centres endow sufficiently available active sites for the reduction of triiodide, while NCNTs serve as both the bridge and the dispersant for the CoSe@NPC. Moreover, the outstanding catalytic metal-nitrogen bonds(Co-N-C) species take the role of high-speed transport pathway to facilitate transfer of electrons from the carbon skeleton to active sites. Benefiting from the above advantages, the hybrid of CoSe@NPC anchored on NCNTs shows fabulous electrocatalytic activity with an energy conversion efficiency of 7.58%, which is even higher than that of Pt counter electrode (7.27%). More remarkably, the composite also demonstrates a good long-term electrochemical stability in iodine-based electrolyte. The present work proves the rationality of the preparation of ZIFs-derived materials with special structures and their application in dye-sensitized solar cells system.
研究领域:
材料科学
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能源科学
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化学工程
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）