Nano Energy
·
2023
·
IF 17.6
Chunhui Wang,Keyi Xian,Shuangshuang Zhao,Shuailing Ma,Haozhe Qin,Dong Wang,Akhil Tayal,Yanfei Wang,Ying-Wu Lin,Ming Feng,Xing Ou
Interfacial engineering , especially atomic substitution at the interface or inside the nanomaterials , is a promising strategy for fabricating high-performance electrode materials. Herein, an interfacial modification strategy was reported to develop cobaltous sulfide (CoS 2 ) nanomaterials with Fe clusters modified on their interface and Fe single atoms partially substituted Co atoms in CoS 2 (Fe-CFS), which were further wrapped by graphene networks, forming highly active Fe-CFS@graphene nanomaterials (Fe-CFS@C) with triple reaction interfaces . As the 1st interface, graphene can decrease their electrical resistance. At the 2nd interface, partial substitution of Co atoms in CoS 2 by Fe single atoms can reduce its band gap and boost the potassium ion (K + ) diffusion rate. At the 3rd interface, anchoring Fe clusters on the surface of CoS 2 results in the formation of Schottky junction and promotes the formation of built-in electric fields, which accelerates the K + insertion/extraction kinetics and depresses the dynamic polarization. Acting as anode for K + battery , Fe-CFS@C exhibits a high reversible capacity of 755.8 mA h g −1 at 0.05 A g −1 . Even at 10 A g −1 , it can maintain 178.3 mA h g −1 over 4000 cycles due to the greatly enhanced electrochemical reaction kinetics and effectively improved structural stability.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2024
·
IF 10.8
Subo Xu,Pin Zhao,Hao Liu,Yao Jiang,Weilong Song,Chuyang Y. Tang,Xinhua Wang
Thin-film composite (TFC) membrane has been extensively utilized and investigated for its excellent properties. Herein, we have constructed an active layer (AL) containing cave-like structures utilizing large meniscus interface. Furthermore, the impact of interface structure on the growth process, morphology, and effective surface area of AL has been fully explored with the assistance of sodium dodecyl benzenesulfonate (SDBS). The SDBS-induced nanobubbles continuously facilitated the migration of the top layer of AL toward the upper space. During this process, the surface area of sunken AL in the cave-like structures initially exhibited an increase and then a decrease. Additionally, the larger interface significantly enhanced the surface area and delayed the rise in the top layer of AL in the cave-like structures. Therefore, the TFC membrane, utilizing a substrate with a pore size of 1.00 μm and assisted by 0.30 mM SDBS, exhibited remarkable flux enhancement (>63%) and reduced reverse sodium salt flux (>35%) in a forward osmosis system. Moreover, the roughness factor was introduced to directly quantify the effective surface area, which had a good correlation with the water flux. Our findings demonstrated the significant potential of utilizing substrates with a large pore size to overcome the inherent limitations of the TFC membrane.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Energy & Environmental Science
·
2025
·
IF 30.8
Yun Cao,Chuannan Geng,Chen Bai,Linkai Peng,Jiaqi Lan,Jiarong Liu,Junwei Han,Bilu Liu,Yanbing He,Feiyu Kang,Quan-Hong Yang,Wei Lv
All-solid-state lithium–sulfur batteries (ASSLSBs) hold great promise for achieving high energy densities. However, their practical applications are hindered by low sulfur utilization and limited cycle life attributed to the sluggish sulfur reaction kinetics. Although catalysis is an effective way to address kinetic limitations, it often becomes ineffective because solid contact between the catalyst and the sulfur species cannot form the molecular-level interfaces necessary for catalytic reactions. Here, we propose a micropore confining and fusing strategy to integrate the catalysis reaction interfaces on a molecule-level. The prepared microporous carbon sheet confines the small molecule sulfur and catalyst clusters in its sub-2 nm micropores, enabling the formation of integrated sulfur-catalyst-carbon interfaces, which fundamentally achieves a molecular-scale contact for solid catalysis and eliminate the interfacial mismatches in the solid cathodes. Such interfaces significantly enhance the sulfur reaction kinetics and utilization even at high rates. Moreover, the large micropore volume (2.0 cm3 g−1) accommodates the substantial volume changes of sulfur, stabilizing interparticle interfaces both within the cathode and at the cathode/electrolyte interface and finally enabling exceptional cycling stability. The assembled battery shows a remarkable specific capacity of over 1000 mA h g−1 at 1.0C and retains over 85% capacity after 1400 cycles, both among the highest ever reported. The interface engineering proposed in this study offers a practical route for ASSLSB applications.
研究领域:
材料科学
·
电化学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2022
·
IF 11.322
C. Wei,S.B. Zhang,Z.W. Wang,C. Zheng,B. Peng,C. Li,Y. Zhang,X.Q. Li,L.F. Cheng
The appropriate hetero interfacial layer structure between metal and ceramic matrix composites is a very interesting topic in materials science. In this work, an adaptive diffusion reactive interfacial layer composed of “Mo–Mo 2 C–Mo 5 Si 3 –MoSi 2 –SiC” between Mo and SiC f /SiC composite is successfully prepared by chemical vapor infiltration (CVI). This reactive interfacial system is among three possible structures of interfacial layers predicted by Density-functional theory (DFT) calculations, which has the largest total interfacial energy (5.679 J/m 2 ). At the same time, the formation process of the reaction interface layers is elucidated by thermodynamic calculations . In addition, dislocations are observed in Mo 5 Si 3 and Mo 2 C grains, and it is worth mentioning that the Mo 5 Si 3 grains are broken through dislocation movement to form fine grains, which release the residual thermal stress of the interfacial layer system caused by thermal mismatch during the long-term CVI process. Overall, our work provides a practical strategy for developing multilayer heterogeneous composites.
研究领域:
材料科学
·
界面工程
✓ 已验证
产品关联
DOI
高影响因子
SURFACE AND INTERFACE ANALYSIS
·
2022
·Vol. 55
·期 4
·279-287
·
IF 1.702
Mengnan Qu,Bin Zhang,Yandong Wang,Yanqing Lv,Jianwei Ge,Yaxin Wu,Min Yan,Lei Shen,Jinmei He
Wettability is an important property of solid surfaces, superwetting materials can be prepared by controlling the surface morphology and surface energy. In recent years, superwetting materials have been researched and used widely in the fields of self-cleaning, anti-fogging, microfluidics, and oil–water separation, but few studies about superwetting materials in chemical reactions have been conducted. In the multiphase reaction, the low solubility and diffusion rate of gas lead to inferior mass transfer, which restricts the reaction kinetics and reduces the reaction rate. Therefore, it may be a breakthrough to make the solid surface obtain underwater superaerophilicity. In this paper, 1H,1H,2H,2H -perfluorooctyltriethoxysilane (POTS) with low surface energy was constructed on the palladium-carbon nanotubes (Pd-CNTs), as-prepared Pd-CNTs/POTS composite has excellent hydrophobicity and underwater superaerophilicity. When Pd-CNTs/POTS composite was utilized in the catalytic hydrogenation, Pd-CNTs/POTS composite shows higher catalytic activity than Pd-CNTs; the higher catalytic performance is attributed to the underwater superaerophilicity, which enables gaseous hydrogen to rapidly accumulate on the surface of material, increasing the gas–liquid–solid reaction interface formed. The strategy looks forward to providing a new way for developing novel and efficient heterogeneous catalysts and reaction systems.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2023
·
IF 20.4
Muya Cai,Zhuqing Zhao,Xin Qu,Jiakang Qu,Zuojun Hu,Hao Shi,Shuaibo Gao,Dihua Wang,Huayi Yin
Many heterogeneous reduction reactions are hampered by the generated intermediate products located at the interface of reactants, resulting in reducing the reaction area or slowing down the mass transfer and thereby shutting off or slowing down the reaction. Thus, removing the unwanted intermediate products from the reaction interface is key to enabling a rapid and sufficient reduction rate and rationally mediating the product sizes and structures. Herein, we employ solid NaCl to absorb the intermediate molten ZnCl 2 generated at the liquid Zn-SiCl 4 gas interface, making the reaction happen continuously and sufficiently at a relatively low temperature of below 450 °C. In addition to refreshing the reaction interface, NaCl acts as a buffer to absorb the reaction heat, ensuring the production of hollow Si inherited from the spherical liquid Zn template. As a result, the yield of Si reaches over 95% within 2 h and the Si particle size is below 200 nm. Further, the obtained Si anode has an initial Coulombic efficiency of 86.7% and delivers a capacity of 1580 mAh g −1 at 3 A g −1 after 350 cycles with a capacity retention of 90.6%. Overall, this paper provides an effective strategy for engineering the reaction interface and revalorizing waste SiCl 4 for making Li-storage Si anodes.
研究领域:
材料科学
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化学工程
·
纳米技术
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Functional Materials Letters
·
2024
·
IF 1.2
Qitao Chen,Shuaiwu Zhu,Zhifeng Xin,Dongdong Wang,Jiajia Cai,Haijin Li,Shilei Ding
Designing the effective active sites and reaction areas of catalytic materials is important for the development of bifunctional electrocatalysts for zinc-air batteries (ZABs). In this paper, a catalyst with a uniform nanopore structure (noted as NiCo-PS) was one-pot synthesized by using transition metals nickel and cobalt as catalytic active components, sucrose as a carbon source, and triblock copolymers as a soft template. The N 2 absorption and desorption isotherms curves show that the pore size distribution of NiCo-PS modified by surfactant is mainly in 3.6 nm range. NiCo-PS exhibits exceptional bifunctional electrocatalysis due to its effective triple-phase reaction interface from its mesoporous structure, with a positive half-wave potential of 0.758 V for ORR and a low overpotential of 390 mV at 10 mA ⋅ cm − 2 for OER. Furthermore, the rechargeable ZABs with the NiCo-PS catalyst exhibit a high open-circuit voltage of 1.31 V, a significant peak power density of 105 mA ⋅ cm − 2 at 0.56 V, and good stability throughout 270 h testing. This result offers valuable insights for designing catalysts that enhance the active region of the reaction within the cathodes of ZABs and hold significant promise for practical applications.
研究领域:
材料科学
·
电化学
·
储能
·
纳米技术
·
催化
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Yue Yang,Nanhui Li,Jianghao Wang,Wei Zhao,Hao Bin Wu
Gas diffusion electrodes (GDEs) show great potential to improve the current densities of the industrial electrochemical carbon dioxide reduction reaction (eCO2RR). The triple-phase boundary (TPB) in GDEs is the key for promoted reaction kinetics, yet such a reaction interface typically suffers from rapid degradation due to electrolyte flooding and salt precipitation. Herein, we demonstrate that a GDE modified with liquid perfluorocarbon (PFC) would notably prolong the lifespan of the GDE with a Bi catalyst in flow-cell electrolyzers. PFC with superhydrophobicity and high CO2 solubility would construct a liquid–solid–liquid reaction interface that prevents the intrusion of electrolytes into the microporous layer (MPL) without hampering the mass transport of CO2. Our work demonstrates an effective strategy to construct a robust and efficient electrochemical reaction interface for the eCO2RR with improved stability for potential industrial applications.
研究领域:
电化学
·
材料科学
·
可持续能源
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Energy
·
2025
·
IF 8.6
Tao Zhang,Ling Meng,Junli Ren,Ning Wang,Lei Du,Xiting Zhang,Lixin Xing,Chunmei Tang,Siyu Ye
As a representative multi-layer energy storage device, zinc-air batteries (ZABs) are inevitably limited by the contact problem between electrode interfaces. Therefore, developing electrode structures with enhanced electron and mass transfer capabilities is crucial for advancing this technology. In this work, Poly(p-phenylene benzobisoxazole)(PBO) carbon paper with in-situ growth Pt catalyst has been prepared and as self-supporting cathode catalyst layer, expanding the traditional three-phase reaction interface to the entire 3D interconnected structure of the air electrode, effectively integrating the catalytic layer with the gas diffusion layer. The modified PBO CO 2 @A-N surface, adorned with uniformly distributed platinum nanoparticles. This modification resulted in exceptional oxygen reduction reaction (ORR) performance, characterized by a substantial electrochemical surface area (200.2 m 2 g Pt −1 ) and an half-wave potential of 0.891 V. In addition, the primary PBO CO 2 @A-N-ZAB demonstrated remarkable peak power densities of 128.1 mW cm −2 in aqueous and 59.1 mW cm −2 in flexible primary zinc-air batteries, underscoring its potential for high-performance energy storage applications.
研究领域:
储能技术
·
纳米科技
·
电化学
·
材料科学
·
柔性电子学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）