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< Page ,Total 22 >
Pt nanoparticles decorated 3D printed hierarchical porous titanium alloy scaffolds for hydrogen evolution reactions at amper-level current densities SCIE
期刊论文 | 2025 , 1016 | JOURNAL OF ALLOYS AND COMPOUNDS
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Abstract :

Most reported 3D electrodes currently lack a macroscopically ordered porous structure, hindering transport efficiency optimization and reducing the utilization of active materials and the surface area of the electrodes. In this study, a micro- and macroscopic hierarchical porous titanium alloy electrode modified with Pt nanoparticles (Pt/TNTs@3D-TC4) was created using electron beam melting (EBM) technology, anodic oxidation, and a water bath method. The micrometer-scale network structure enhanced electrolyte diffusion and bubble removal, whereas the surface nanostructures provided numerous anchoring sites for Pt nanoparticles. This unique micro- nano structure offers a large specific surface area and efficient mass transport, resulting in excellent acidic HER performance and stability at industrial current densities. X-ray photoelectron spectroscopy (XPS) and X-ray adsorption fine structure (XAFS) analyses confirmed an electronic metal-support interaction (EMSI) between Pt and TiO2 nanotubes (TNTs), with Pt nanoparticles anchored via Pt-O-Ti bonds. The electrode achieved the overpotential of 42 mV at-10 mA cm- 2, and 267 and 378 mV at-0.5 A cm- 2 and 1 A cm- 2, respectively. Exceptional stability was demonstrated, without significant deactivation after 120 h at 0.5 A cm- 2. This study offers a novel strategy in the industrial application of high-performance electrodes for electrochemical energy conversion.

Keyword :

High current density High current density Self-supporting Self-supporting 3D Printing 3D Printing Hierarchical porous Hierarchical porous Hydrogen evolution reaction Hydrogen evolution reaction

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GB/T 7714 Song, Hui , Ran, Guangshun , Xu, Jiangwen et al. Pt nanoparticles decorated 3D printed hierarchical porous titanium alloy scaffolds for hydrogen evolution reactions at amper-level current densities [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2025 , 1016 .
MLA Song, Hui et al. "Pt nanoparticles decorated 3D printed hierarchical porous titanium alloy scaffolds for hydrogen evolution reactions at amper-level current densities" . | JOURNAL OF ALLOYS AND COMPOUNDS 1016 (2025) .
APA Song, Hui , Ran, Guangshun , Xu, Jiangwen , Lin, Chunxia , Yang, Zicong , Chang, Yukun et al. Pt nanoparticles decorated 3D printed hierarchical porous titanium alloy scaffolds for hydrogen evolution reactions at amper-level current densities . | JOURNAL OF ALLOYS AND COMPOUNDS , 2025 , 1016 .
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Al2O3-induced phase conversion regulation from hexagonal FeS to orthorhombic FeS for enhancing the Li-ion accommodation ability SCIE
期刊论文 | 2024 , 217 | MATERIALS CHARACTERIZATION
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Cycling lifespan/stability is one of the most important limitations for multivalent transition metal sulfides (TMSs) used in secondary batteries. However, the chaos reaction of TMSs is an important obstacle that restricts their electrochemical stability in all-enclosed batteries. Herein, taking FeS anode and lithium-ion batteries as the example, the phase-lithiation correlation is studied through TEM and DFT analysis. It's found that the pristine hexagonal FeS converts to tetragonal FeS phase accompanied by severe and rapid capacity decay. However, it converts to orthorhombic FeS with enhanced capacity and nice lifespan when introducing trace amount amorphous Al2O3 upon FeS power's surface. DFT calculations further reveal that Al2O3 induces the phase conversion from low-acitve tetragonal FeS to high-active orthorhombic FeS, which promotes the lithiation-delithiation reversibility and stability. Based on the above result, it is expected to provide useful guidelines for the in-situ structure engineering of TMSs-based anodes in all-enclosed secondary batteries.

Keyword :

Enhanced capacity Enhanced capacity Al2O3 Al2O3 Orthorhombic FeS Orthorhombic FeS Chaos reaction Chaos reaction Hexagonal FeS Hexagonal FeS

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GB/T 7714 Zu, Guannan , Li, Yilong , Liu, Hexiong et al. Al2O3-induced phase conversion regulation from hexagonal FeS to orthorhombic FeS for enhancing the Li-ion accommodation ability [J]. | MATERIALS CHARACTERIZATION , 2024 , 217 .
MLA Zu, Guannan et al. "Al2O3-induced phase conversion regulation from hexagonal FeS to orthorhombic FeS for enhancing the Li-ion accommodation ability" . | MATERIALS CHARACTERIZATION 217 (2024) .
APA Zu, Guannan , Li, Yilong , Liu, Hexiong , Zhang, Manchen , Yang, Yunfei , Wang, Juan et al. Al2O3-induced phase conversion regulation from hexagonal FeS to orthorhombic FeS for enhancing the Li-ion accommodation ability . | MATERIALS CHARACTERIZATION , 2024 , 217 .
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Superlattice cathodes endow cation and anion co-intercalation for high-energy-density aluminium batteries SCIE
期刊论文 | 2024 , 15 (1) | NATURE COMMUNICATIONS
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Conventionally, rocking-chair batteries capacity primarily depends on cation shuttling. However, intrinsically high-charge-density metal-ions, such as Al3+, inevitably cause strong Coulombic ion-lattice interactions, resulting in low practical energy density and inferior long-term stability towards rechargeable aluminium batteries (RABs). Herein, we introduce tunable quantum confinement effects and tailor a family of anion/cation co-(de)intercalation superlattice cathodes, achieving high-voltage anion charge compensation, with extra-capacity, in RABs. The optimized superlattice cathode with adjustable van der Waals not only enables facile traditional cation (de)intercalation, but also activates O2- compensation with an extra anion reaction. Furthermore, the constructed cathode delivers high energy-density (466 Wh kg-1 at 107 W kg-1) and one of the best cycle stability (225 mAh g-1 over 3000 cycles at 2.0 A g-1) in RABs. Overall, the anion-involving redox mechanism overcomes the bottlenecks of conventional electrodes, thereby heralding a promising advance in energy-storage-systems. Here, the authors propose a superlattice cathode with co-(de)intercalation chemistry in a rechargeable aluminum ion battery. The proposed cathode exceeds the theoretical capacity for conventional oxide electrodes with single cation shuttling.

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GB/T 7714 Cui, Fangyan , Li, Jingzhen , Lai, Chen et al. Superlattice cathodes endow cation and anion co-intercalation for high-energy-density aluminium batteries [J]. | NATURE COMMUNICATIONS , 2024 , 15 (1) .
MLA Cui, Fangyan et al. "Superlattice cathodes endow cation and anion co-intercalation for high-energy-density aluminium batteries" . | NATURE COMMUNICATIONS 15 . 1 (2024) .
APA Cui, Fangyan , Li, Jingzhen , Lai, Chen , Li, Changzhan , Sun, Chunhao , Du, Kai et al. Superlattice cathodes endow cation and anion co-intercalation for high-energy-density aluminium batteries . | NATURE COMMUNICATIONS , 2024 , 15 (1) .
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One-step synthesis of PtNi anchored on TiO2 nanotube arrays for methanol oxidation SCIE
期刊论文 | 2023 , 943 | JOURNAL OF ALLOYS AND COMPOUNDS
WoS CC Cited Count: 9
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Abstract :

Highly active, stable, economic friendly electrocatalysts play a crucial role for the commercialization of direct methanol fuel cells (DMFCs). One kind of flower-like PtNi bimetallic particle anchored on TiO2 na-notube arrays (PtNi/TNTs/Ti) had been synthesized by one-step electrochemical synthesis as anode catalysts for methanol oxidation reaction (MOR) in this study. The PtNi/TNTs/Ti electrode demonstrated high elec-trocatalytic activity and durability significantly for MOR. In addition, PtNi100/TNTs/Ti possessed a mass activity of 409.8 mA/mgpt, which was four times greater than that of Pt100/TNTs/Ti electrodes. According to further structure analysis, the improvement in catalytic activity was attributed to lattice compression when Ni atoms entered the Pt lattice accompanied by a 1.02 eV positive shift in Pt 4 f7/2 binding energy, and density functional theory (DFT) calculations indicated that the remarkably enhanced catalytic performance on PtNi through lattice compression arising from the enhanced OH adsorption. It appears promising that this simple method could be adopted to prepare an integrated electrode used as energy and environmental applications. (c) 2023 Published by Elsevier B.V.

Keyword :

TiO2 nanotubes TiO2 nanotubes PtNi bimetallic catalyst PtNi bimetallic catalyst Methanol oxidation reaction Methanol oxidation reaction Lattice compression Lattice compression

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GB/T 7714 Chang, Yukun , Chen, Yanhui , Wu, Yahang et al. One-step synthesis of PtNi anchored on TiO2 nanotube arrays for methanol oxidation [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 943 .
MLA Chang, Yukun et al. "One-step synthesis of PtNi anchored on TiO2 nanotube arrays for methanol oxidation" . | JOURNAL OF ALLOYS AND COMPOUNDS 943 (2023) .
APA Chang, Yukun , Chen, Yanhui , Wu, Yahang , Yang, Zicong , Wang, Jinshu , Wang, Xinxin et al. One-step synthesis of PtNi anchored on TiO2 nanotube arrays for methanol oxidation . | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 943 .
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Pt/TiO2 Nanotubes Electrode: Preparation by Electroplating Method and Electrocatalytic Hydrogen Evolution Performance SCIE
期刊论文 | 2022 , 38 (2) , 227-236 | CHINESE JOURNAL OF INORGANIC CHEMISTRY
WoS CC Cited Count: 1
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Here, Pt modified anatase-type titanium dioxide (TiO2) nanotube arrays were prepared by electroplating method for a low-platinum Pt/TiO2 nanotubes electrode (Pt/TiO2-NTs). By contrast, we fixed Pt on TiO2 dense film by the same procedure as a control sample (Pt/TiO2-F). The scanning electron microscopy and transmission electron microscopy observation showed that Pt nanoparticles were distributed uniformly in nanotube arrays, and Pt/TiO2 NTs showed a higher efficiency in electrocatalytic hydrogen evolution compared with Pt/TiO2-F and commercial Pt/C catalyst, in which the overpotential of Pt/TiO2-NTs was 0.079 V, the Tafel slope was 42.7 mV.dec(-1) at 10 mA.cm(-2). The catalytic activity of 3 000 cycles duration stability test results showed that Pt/TiO2-NTs exhibited excellent stability compared with the above contrast electrodes.

Keyword :

TiO2 nanotubes carrier TiO2 nanotubes carrier electroplating electroplating electrocatalytic hydrogen evolution electrocatalytic hydrogen evolution platinum-based catalyst platinum-based catalyst

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GB/T 7714 Wu An-Ran , Chen Yan-Hui , Wang Xin-Xin et al. Pt/TiO2 Nanotubes Electrode: Preparation by Electroplating Method and Electrocatalytic Hydrogen Evolution Performance [J]. | CHINESE JOURNAL OF INORGANIC CHEMISTRY , 2022 , 38 (2) : 227-236 .
MLA Wu An-Ran et al. "Pt/TiO2 Nanotubes Electrode: Preparation by Electroplating Method and Electrocatalytic Hydrogen Evolution Performance" . | CHINESE JOURNAL OF INORGANIC CHEMISTRY 38 . 2 (2022) : 227-236 .
APA Wu An-Ran , Chen Yan-Hui , Wang Xin-Xin , Zhou Wen-Yuan , He Jia-Wei , Wang Jin-Shu et al. Pt/TiO2 Nanotubes Electrode: Preparation by Electroplating Method and Electrocatalytic Hydrogen Evolution Performance . | CHINESE JOURNAL OF INORGANIC CHEMISTRY , 2022 , 38 (2) , 227-236 .
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Unraveling structure evolution failure mechanism in MoS2 anode for improving lithium storage stability SCIE
期刊论文 | 2022 , 128 , 245-253 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
WoS CC Cited Count: 3
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Abstract :

2H phase molybdenum disulfide (2H-MoS2) possesses the two-dimensional layered structure and high theoretical capacity, presenting excellent lithiation-delithiation property. However, the violent capacity decay within dozens of cycles still remains a great challenge due to lacking of in-depth failure mechanism. Herein, a novel decay-recovery-decay failure phenomenon upon long-term cycles is reported for the first time, which originates from the slow size change of Mo nanoparticles (NPs). Decay stages are triggered by many irregular-shaped Mo NPs with the increasing size up to similar to 15 nm, leading to prominent pseudocapacitance failure and capacity loss. Subsequent recovery stages are attributed to the pulverization of coarse Mo NPs through surface sulfurization and accompanying lithiation. To overcome the instability issue, proper modifiers should be introduced to restrain the spontaneous growth of Mo NPs, such as aluminum oxide (Al2O3). The strong Mo-Al2O3 bond gradually "drags" Al2O3 fragments into the active material as the cycle continuously proceeds, resulting in the efficient refinement and the reversible conversion between Mo and MoS2. Therefore, the enhanced cycling stability and the capacity retention are successfully achieved. It is expected to provide a new insight into the energy storage of transition metal chalcogenide anode materials in rechargeable batteries. (C) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

Keyword :

Al2O3 Al2O3 Mo nanoparticles Mo nanoparticles Decay-recovery-decay Decay-recovery-decay 2H-MoS2 2H-MoS2 Enhanced cycling stability Enhanced cycling stability

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GB/T 7714 Zu, Guannan , Xu, Shiyu , Wang, Changhao et al. Unraveling structure evolution failure mechanism in MoS2 anode for improving lithium storage stability [J]. | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY , 2022 , 128 : 245-253 .
MLA Zu, Guannan et al. "Unraveling structure evolution failure mechanism in MoS2 anode for improving lithium storage stability" . | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 128 (2022) : 245-253 .
APA Zu, Guannan , Xu, Shiyu , Wang, Changhao , Li, Hongyi , Zhang, Manchen , Ke, Xiaoxing et al. Unraveling structure evolution failure mechanism in MoS2 anode for improving lithium storage stability . | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY , 2022 , 128 , 245-253 .
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In-situ constructing nanostructured magnesium ferrite on steel slag for Cr (VI) photoreduction SCIE
期刊论文 | 2022 , 422 | JOURNAL OF HAZARDOUS MATERIALS
WoS CC Cited Count: 17
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An innovative method is created for transforming iron-rich RO phase (MgO0.239FeO0.761) on steel slag surface into nanostructured Mg0.04Fe2.96O4 layer. The phase change process is investigated, and it is found that salicylic acid modification and alkaline roasting procedures remarkably increase the specific surface area from 0.46 m2/g (raw steel slag) to 69.5 m2/g (Mg0.04Fe2.96O4), and the generation of Mg0.04Fe2.96O4 enhances the absorption of visible light and Cr(VI) conversion with 2-times increasement than raw steel slag. Surface complexation between H2C2O4 ligands and Fe metal moiety on Mg0.04Fe2.96O4 induces the intramolecular electron transfer under visible light irradiation based on a ligand-to-metal charge transfer mechanism, thus resulting in Cr(VI) photoreduction, and the catalytic efficiency is above 90% for Cr(VI) (40 mg/L) under inherent pH= 5.5 conditions. Moreover, recyclability tests based on magnetic separation show that the photoreactivity is closely related to Mg content of Mg0.04Fe2.96O4 layer where Mg leaching occurs and finally generates cubic spinel configuration Fe3O4. This work highlights the importance of surface functionalization in post-use phases of steel slag in which surface reactivity and application potential can be greatly altered by chemical exposure history and surface transformations. It also provides valuable references for studying the metastable state mechanism of magnesium ferrite photocatalysts.

Keyword :

Cr(VI) reduction Cr(VI) reduction Steel Slag Steel Slag Magnesium ferrite Magnesium ferrite

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GB/T 7714 Sun, Lingmin , Wu, Junshu , Wang, Jinshu et al. In-situ constructing nanostructured magnesium ferrite on steel slag for Cr (VI) photoreduction [J]. | JOURNAL OF HAZARDOUS MATERIALS , 2022 , 422 .
MLA Sun, Lingmin et al. "In-situ constructing nanostructured magnesium ferrite on steel slag for Cr (VI) photoreduction" . | JOURNAL OF HAZARDOUS MATERIALS 422 (2022) .
APA Sun, Lingmin , Wu, Junshu , Wang, Jinshu , Yang, Yilong , Xu, Meng , Liu, Jingchao et al. In-situ constructing nanostructured magnesium ferrite on steel slag for Cr (VI) photoreduction . | JOURNAL OF HAZARDOUS MATERIALS , 2022 , 422 .
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电镀法制备Pt/TiO_2纳米管电极及其电催化析氢性能
期刊论文 | 2022 , 38 (02) , 227-236 | 无机化学学报
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采用阳极氧化法制备得到锐钛矿型二氧化钛(TiO_2)纳米管阵列,在其表面通过电镀法沉积Pt,得到了低铂的Pt/TiO_2纳米管电极(Pt/TiO_2-NTs)。通过扫描电子显微镜和透射电子显微镜对其进行形貌表征后发现,Pt较为均匀地分布于TiO_2纳米管阵列中。进一步的电催化析氢结果表明,Pb/TiO_2-NTs在10 m A·cm~(-2)时,过电位为0.079 V,塔菲尔斜率为42.7 m V·dec~(-1),较Pt/TiO_2致密膜电极(Pt/TiO_2-F)以及商业Pt/C催化剂显示了更为优异的催化活性。同时,在长循环稳定性测试(3 000个周期)中,Pb/TiO_2-NTs相较于上...

Keyword :

TiO_2纳米管载体 TiO_2纳米管载体 电镀 电镀 铂基催化剂 铂基催化剂 电催化析氢 电催化析氢

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GB/T 7714 吴安冉 , 陈言慧 , 王心心 et al. 电镀法制备Pt/TiO_2纳米管电极及其电催化析氢性能 [J]. | 无机化学学报 , 2022 , 38 (02) : 227-236 .
MLA 吴安冉 et al. "电镀法制备Pt/TiO_2纳米管电极及其电催化析氢性能" . | 无机化学学报 38 . 02 (2022) : 227-236 .
APA 吴安冉 , 陈言慧 , 王心心 , 周文元 , 何佳伟 , 王金淑 et al. 电镀法制备Pt/TiO_2纳米管电极及其电催化析氢性能 . | 无机化学学报 , 2022 , 38 (02) , 227-236 .
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二氧化钛纳米管的制备和应用
期刊论文 | 2022 , 29 (05) , 1-9 | 金属功能材料
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Abstract :

二氧化钛纳米管属于一维纳米材料,既具有纳米材料普遍具有的量子尺寸效应,还具有独特的机械性、热稳定性和光学性质,因此其具有特殊的研究意义。采用简单易操作的阳极氧化法可在钛基底上制备出结构致密、形貌可控、与钛基底结合紧密的纳米管阵列。相比二氧化钛的纳米颗粒和纳米薄膜等材料,高度有序且表面积大的TiO_2纳米管可以为电子和离子提供更快速的运输通道。基于阳极氧化法和磁控溅射及电化学沉积法,探究了TiO_2纳米管在锂电池、电催化、光催化以及钛合金紧固件等领域的相关应用。

Keyword :

阳极氧化 阳极氧化 电化学沉积 电化学沉积 磁控溅射 磁控溅射 二氧化钛纳米管 二氧化钛纳米管

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GB/T 7714 李洪义 , 陈言慧 , 郑雄领 et al. 二氧化钛纳米管的制备和应用 [J]. | 金属功能材料 , 2022 , 29 (05) : 1-9 .
MLA 李洪义 et al. "二氧化钛纳米管的制备和应用" . | 金属功能材料 29 . 05 (2022) : 1-9 .
APA 李洪义 , 陈言慧 , 郑雄领 , 祖冠男 , 常玉昆 , 吴亚航 . 二氧化钛纳米管的制备和应用 . | 金属功能材料 , 2022 , 29 (05) , 1-9 .
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Superlattice-Stabilized WSe2 Cathode for Rechargeable Aluminum Batteries SCIE
期刊论文 | 2022 , 6 (12) | SMALL METHODS
WoS CC Cited Count: 23
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Rechargeable aluminum batteries (RABs), with abundant aluminum reserves, low cost, and high safety, give them outstanding advantages in the postlithium batteries era. However, the high charge density (364 C mm(-3)) and large binding energy of three-electron-charge aluminum ions (Al3+) deintercalation usually lead to irreversible structural deterioration and decayed battery performance. Herein, to mitigate these inherent defects from Al3+, an unexplored family of superlattice-type tungsten selenide-sodium dodecylbenzene sulfonate (SDBS) (S-WSe2) cathode in RABs with a stably crystal structure, expanded interlayer, and enhanced Al-ion diffusion kinetic process is proposed. Benefiting from the unique advantage of superlattice-type structure, the anionic surfactant SDBS in S-WSe2 can effectively tune the interlayer spacing of WSe2 with released crystal strain from high-charge-density Al3+ and achieve impressively long-term cycle stability (110 mAh g(-1) over 1500 cycles at 2.0 A g(-1)). Meanwhile, the optimized S-WSe2 cathode with intrinsic negative attraction of SDBS significantly accelerates the Al3+ diffusion process with one of the best rate performances (165 mAh g(-1) at 2.0 A g(-1)) in RABs. The findings of this study pave a new direction toward durable and high-performance electrode materials for RABs.

Keyword :

rechargeable aluminum batteries rechargeable aluminum batteries long-term stability long-term stability tungsten selenide tungsten selenide electrode pulverization electrode pulverization superlattice-type cathodes superlattice-type cathodes

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GB/T 7714 Cui, Fangyan , Han, Mingshan , Zhou, Wenyuan et al. Superlattice-Stabilized WSe2 Cathode for Rechargeable Aluminum Batteries [J]. | SMALL METHODS , 2022 , 6 (12) .
MLA Cui, Fangyan et al. "Superlattice-Stabilized WSe2 Cathode for Rechargeable Aluminum Batteries" . | SMALL METHODS 6 . 12 (2022) .
APA Cui, Fangyan , Han, Mingshan , Zhou, Wenyuan , Lai, Chen , Chen, Yanhui , Su, Jingwen et al. Superlattice-Stabilized WSe2 Cathode for Rechargeable Aluminum Batteries . | SMALL METHODS , 2022 , 6 (12) .
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