JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Lu Zhang,Ning Guo,Xinyang Liu,Qianqian Liu,Dongxu Jiao,Yingjie Wu,Song Liu
Pressure engineering overcomes CO 2 mass-transfer limitations and enhances eCO 2 RR performance. • SnN 4 single-atom catalysts achieve 85% FE HCOOH and high current density under 5 MPa CO 2 . • In situ IR and DFT reveal pressure-induced *OCHO stabilization for selective formate production. Electrochemical carbon dioxide reduction reaction (eCO 2 RR) in aqueous media is fundamentally constrained by the low solubility of CO 2 , leading to limited current densities and poor product selectivity. Herein, we have developed tin single-atom catalysts (Sn-SACs) featuring well-defined SnN 4 coordination as a platform to systematically investigate the influence of CO 2 pressure on reaction kinetics and selectivity. Elevating the CO 2 pressure to 5 MPa markedly enhances mass transport, achieving a Faradaic efficiency for formate of 85% at −1.1 V vs. RHE with high current density, in stark contrast to 11.5% under 0.1 MPa. In situ attenuated total reflectance surface-enhanced infrared absorption spectroscopy (ATR-SEIRAS) reveals that high pressure favors the formation of *OCHO intermediates, thereby redirecting the reaction pathway toward formate production. Complementary density functional theory (DFT) calculations corroborate that increased local CO 2 concentration stabilizes the *OCHO transition state and lowers the associated energy barrier. This work has established that pressure engineering as an effective strategy to decouple mass transport, activity, and selectivity in eCO 2 RR, underscoring the promise of high-pressure electrochemistry for efficient CO 2 conversion. Download: Download high-res image (304KB) Download: Download full-size image
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Nianxue Dong,Yongguang Zhang,Xianyue Zhang,Jiawei Fan,Haipeng Li,Baoe Li
Na 3 V 2 (PO 4 ) 2 F 3 (NVPF) is a promising cathode material for sodium-ion batteries owing to its impressive theoretical capacity, elevated operating voltage, and stable structure. However, its practical utilization remains limited owing to its poor electronic conductivity. To overcome this issue, an Sn-doped and reduced graphene oxide (rGO)–coated NVPF cathode is successfully prepared using the sol–gel method. Sn substitution moderately widens the lattice spacing, facilitating intrinsic electronic conductivity, while rGO coating provides continuous conductive pathways along the particle surfaces, suppressing polarization and enhancing external electron transport. Herein, the optimized Na 3 V 1.93 Sn 0.07 (PO 4 ) 2 F 3 @rGO (NVSnPF-0.07@rGO) cathode reached a specific capacity of 123.0 mAh g −1 at 1 C, with a rate capability of 74.4 mAh g −1 at 30 C, which is superior to those of the unmodified NVPF cathode. The capacity retention remains at 80.7 % after 2500 cycles at 30 C. Density functional theory analysis reveals that Sn doping is beneficial for improving the electrical conductivity of NVPF. Finally, the NVSnPF-0.07@rGO//HC (hard carbon) full cell reaches a discharge output of 92.2 mAh g −1 at 1 C after long-term cycling and a Coulombic efficiency of ∼100 %. The evidence presented in this study provides a framework for advancing the functional properties of cathode materials.
研究领域:
材料科学
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电化学
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储能技术
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纳米材料
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Mengyu Jin,Yuanbo Song,Shijie Wang,Cheng Hou,Xiaoxia Wang,Yang Shi,Zheng Shen,Yalei Zhang
The size dependence of metal nanoparticles is a critical factor affecting catalytic activity, as their geometric and electronic properties vary significantly with size. This study proposes a strategy combining rapid Joule-heating with solid-phase synthesis to prepare Cr/Sn-Beta bimetallic catalysts of various sizes via ultrafast thermal shock (UTS, heating rate: 1850 °C/s) and conventional muffle furnace annealing (MFA, heating rate: 5 °C/min). HRTEM results reveal that the bimetallic particle size of Cr/Sn-Beta catalysts prepared via UTS technique is only 2.55 nm, compared to 6.54 nm for catalysts obtained through conventional MFA method. Combined with XRD, BET, H 2 -TPR, UV–vis and FT-IR characterization, it is further confirmed that the ultra-high heating/cooling rate and second-short heating duration of the UTS method achieved efficient embedding of Cr and Sn within the zeolite micropores, which conferred precise tailoring of the particle size. The correlation between particle size and catalytic activity was investigated using the LA production from cellulose as a model reaction. In this work, the superior size effect of bimetallics nanoparticles prepared by UTS synthesis strategies was emphasized, providing insights into the geometry-activity relationship that will guide the rational design of catalysts in terms of morphology and particle size.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Pan Haibin,Bai Yang,Sun Kexuan,Yang Ming,Tian Ruijia,Meng Yuanyuan,Gao Jiangwei,Wang Yaohua,Wang Jingnan,Zhou Shujing,Song Zhenhua,Xiaoyi Lu,Liu Chang,Ge Ziyi
All-perovskite tandem solar cells (PTSCs) demonstrate exceptional potential to surpass the Shockley-Queisser (SQ) theoretical limit. However, practical implementation faces critical challenges due to a self-reinforcing photothermal-mechanical degradation mechanism originating from multiscale physical couplings. In this study, a multifunctional polyamine ligand triphenyltriamine thiophosphate (TPTA) was introduced into the tin-lead (Sn-Pb) perovskite solution system to establish an I-Sn-N coordination-mediated lattice stabilization framework, and the photothermal-mechanical coupling path was cut off from multiple aspects such as suppressing periodic oscillations and regulating stress. Consequently, single-junction Sn-Pb perovskite solar cells (PSCs) achieve a power conversion efficiency (PCE) of 23.4% and retaining 94.9% of initial performance after 950 hours of maximum power point (MPP) tracking. When the device is integrated into the 2-terminal (2 T) tandem architecture, its PCE reaches a significant level of 29.6 % (certified PCE of 28.9%), and 93.4% of the initial efficiency can be maintained after 900 hours continuous operation.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2020
·
IF 7.489
Zhilei Wang,Jirong Bai,Haiyang Xu,Gang Chen,Shifei Kang,Xi Li
Powerful yet orderly nanostructure lithium-ion batteries (LIBs) are eagerly desired to satisfy the practical application of portable electronics and smart grids. However, the surface re-stacking and surface functionalization on the MXenes in the anode electrode severely restrict the accessibility to electrolyte ions, hindering the full utilization of their intrinsic properties. To address this challenge, we rationally design three-dimensional (3D) Sn@Ti 3 C 2 materials and fabricate them in a unique layer-by-layer manner through self-assembly for boosting LIBs. In this design system for fast lithium-ion storage, the Ti 3 C 2 MXene nanosheets serving as 3D scaffolds buffer the severe volume expansion and agglomeration of Sn nanoparticles (NPs) and enhance electrode conductivity at the interface. Furthermore, Sn NPs are embedded as interlayer spacers to prevent nanosheet re-stacking and provide outstanding electrochemical performance . The nanostructure can increase the lithium-ion diffusion coefficient and create additional active sites. As a result, the Sn@Ti 3 C 2 anode exhibits a superior specific capacity up to 666 mA∙h∙g −1 at 0.5 A∙g −1 after 250 cycles. Compared with pure Sn NPs, the improved electrochemical performance of Sn@Ti 3 C 2 can be ascribed to the high electronic conductivity of Ti 3 C 2 MXene nanosheets . The 3D Sn@Ti 3 C 2 materials prepared in a layer-by-layer manner through self-assembly display promising performances for LIBs.
研究领域:
材料科学
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能源存储
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CERAMICS INTERNATIONAL
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2024
·
IF 5.1
Chao Li,Ying Li,Yi Xu,Jiyou Zhong
Near-infrared (NIR) phosphors as crucial components of NIR light sources have multifunctional and smart spectroscopy applications, prompting an increasing research interest in developing efficient and stable NIR materials. Focusing on this issue, the present study explored the luminescent properties of Cr 3+ -doped Ca 3 ZnMGe 3 O 12 (M = Zr, Hf, Sn and Ti) garnet family. These materials exhibit an emission peak falls within the range of 785–805 nm with a full width at half maximum (FWHM) varying from 114 to 123 nm. Among them, the Ca 3 ZnZrGe 3 O 12 :Cr 3+ phosphor shows the highest photoluminescence quantum yield (PLQY = 60.3 %) and an excellent thermal stability ( I 423K / I 298K = 77.51 %). Moreover, the performance of a prototype Ca 3 ZnZrGe 3 O 12 :Cr 3+ -containing NIR pc-LED device was estimated, which achieves an NIR output of 23.46 mW and a photonic efficiency of 14.09 % under 100 mA driving current. Non-destructive examination can be realized using this light source, demonstrating the good potential of the material in NIR spectroscopy applications.
研究领域:
材料科学
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光电技术
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光子学
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Materials
·
2022
·Vol. 15
·期 7
·2475
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IF 3.748
Jaffer Saddique,Honglie Shen,Jiawei Ge,Xiaomin Huo,Nasir Rahman,Muhammad Mushtaq,Khaled Althubeiti,Hamza Al-Shehri
Tin oxide (SnO2) and tin-based composites along with carbon have attracted significant interest as negative electrodes for lithium-ion batteries (LIBs). However, tin-based composite electrodes have some critical drawbacks, such as high volume expansion, low capacity at high current density due to low ionic conductivity, and poor cycle stability. Moreover, complex preparation methods and high-cost carbon coating procedures are considered main challenges in the commercialization of tin-based electrodes for LIBs. In this study, we prepared a Sn/SnO2/C nano-composite structure by employing a low-cost hydrothermal method, where Sn nanoparticles were oxidized in glucose and carboxymethyl cellulose CMC was introduced into the solution. Scanning electron microscope (SEM) and transmission electron microscope revealed the irregular structure of Sn nanoparticles and SnO2phases in the conductive carbon matrix. The as-prepared Sn/SnO2/C nano-composite showed high first-cycle reversible discharge capacity (2248 mAhg−1) at 100 mAg−1with a first coulombic efficiency of 70%, and also displayed 474.64 mAhg−1at the relatively high current density of about 500 mAg−1after 100 cycles. A low-cost Sn/SnO2/C nano-composite with significant electrochemical performance could be the next generation of high-performance negative electrodes for LIBs.
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IONICS
·
2022
·Vol. 29
·期 2
·505-518
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IF 2.961
Yang Dongping,Xiong Deping,Feng Zuyong,Wen Kunhua,Wu Kaidan,He Miao,Feng Yefeng
Sn-based materials receive a lot of attention because of their high theoretical specific capacity, acceptable price, and good electrical conductivity. However, Sn-based materials have a large volume expansion in the circulation process, leading to the rapid decay of capacity. According to the ion diffusion time formula: t = L2/2D, where L is the diffusion length or the particle size, and D is the diffusion constant of the ions and the electrons. It can be seen that reducing the particle size can significantly improve the multiplier performance of the material. At present, the main methods for preparing nano-sized metal/carbon composites are the high-energy ball grinding method, hydrothermal method, calcined metal, and organic matter precursor. In this paper, sodium alginate was used as a precursor system for the Fe-doped Sn @3D carbon composite material, which was applied to the lithium-ion battery anode to obtain excellent electrochemical performance (1133.5 mAhg −1 after 200 cycles at 0.2 Ag −1 ). The increase in the specific surface area of Fe-doped Sn @3D carbon also increases the charge transfer efficiency and further improves the multiplier performance of the electrode. Meanwhile, the nano-size and structure can better buffer the volume expansion and protect the structure of the electrode.
研究领域:
材料科学
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电化学
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纳米材料
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能源存储
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功能材料
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复合材料
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Journal of Physical Chemistry C
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2018
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IF 4.484
Yadong Lian,Xiaokun Huang,Min Gu
Nanocrystalline stannous oxide (SnO) powder has been prepared by ball-milling of micrometer-SnO in a nitrogen atmosphere. A cation deficiency of 6.5% was found in the nano-SnO sample by X-ray photoelectron spectroscopy. After annealing at 350, 450, or 550 °C under dynamic vacuum conditions, oxygen vacancies were found in the nano-SnO samples, as verified by electron paramagnetic resonance experiments. The samples displayed weak ferromagnetism; the sample with both 6.5% Sn and at least 7.5% O vacancies showed the maximum saturation magnetization, reaching almost 1.7 × 10–3 emu/g at room temperature. The O vacancies tended to gather around Sn vacancies. An L-shaped defect model composed of one Sn and two O vacancies has been established, and its ferromagnetism has been calculated by a first-principles method. We found that the L-shaped defect induced a magnetic moment of 0.55 μB in the SnO lattice, the main contribution to which came from a spin-polarized electron in the p orbital of a corner Sn atom.
研究领域:
材料科学
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凝聚态物理
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纳米材料
·
磁学
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高影响因子
ChemistryOpen
·
2020
·Vol. 9
·期 6
·713-718
·
IF 2.37
Wang Lyu,Guoqiang He,Ting Liu
All-solid-state polymer lithium-ion batteries are ideal choice for the next generation of rechargeable lithium-ion batteries due to their high energy, safety and flexibility. Among all polymer electrolytes, PEO-based polymer electrolytes have attracted extensive attention because they can dissolve various lithium salts. However, the ionic conductivity of pure PEO-based polymer electrolytes is limited due to high crystallinity and poor segment motion. An inorganic filler SiO 2 nanospheres and a plasticizer Succinonitrile (SN) are introduced into the PEO matrix to improve the crystallization of PEO, promote the formation of amorphous region, and thus improve the movement of PEO chain segment. Herein, a PEO 18 −LiTFSI−5 %SiO 2 −5 %SN composite solid polymer electrolyte (CSPE) was prepared by solution-casting. The high ionic conductivity of the electrolyte was demonstrated at 60 °C up to 3.3×10 −4 S cm −1 . Meanwhile, the electrochemical performance of LiFePO 4 /CSPE/Li all-solid-state battery was tested, with discharge capacity of 157.5 mAh g −1 at 0.5 C, and capacity retention rate of 99 % after 100 cycles at 60 °C. This system provides a feasible strategy for the development of efficient all-solid-state lithium-ion batteries. Graphical All-solid-state polymer lithium-ion batteries are ideal choice for the next generation of rechargeable lithium-ion batteries due to their high energy, safety and flexibility. The ionic conductivity of pure PEO-based polymer electrolytes are limited by high crystallinity and poor segment motion. In this work, an inorganic filler and a plasticizer have been introduced into the PEO matrix to improve the crystallization and promote the formation of amorphous region, and thus improve the movement of PEO chain segments. This work provides a feasible strategy for the development of all-solid-state lithium-ion battery.
研究领域:
材料科学
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电化学
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储能技术
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高分子科学
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锂离子电池
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Lin Yue,Xiaoyun Han,Shiqi Xing,Wang Liang,Yanfang Liu,Yushan Zhang,Yonghui Han
Ag was loaded onto Sn-PTA-MI by the photodeposition method. • Dark reaction experiment confirms Sn-PTA-MI/Ag has the “memory catalysis” effect. • “Memory catalysis” effect boosted by free radical chain reaction from released electrons. • Alternating light-dark reaction enhances utilization efficiency of photogenerated carriers. • PDOS spectroscopy confirms strong interaction between Ag atoms and N, C atoms. A Sn-PTA-MI/Ag photocatalyst with “memory catalysis” effect was prepared by the photodeposition method to load Ag onto Sn-based metal-organic framework (MOF), and the “memory catalysis” effect was confirmed by photoreaction, dark reaction, and alternating light-dark reaction experiments. Under photoreaction, the degradation efficiency of methyl orange (MO) catalyzed by Sn-PTA-MI/Ag reached 90.7% in 60 min. The pre-illumination activation of the Sn-PTA-MI/Ag catalyst facilitated the storage of photogenerated electrons, which are released under dark reaction conditions and subsequently participate in MO degradation. Meanwhile, the “memory catalysis” effect can be significantly enhanced through the free radical chain reaction triggered by the released electrons under dark reaction. The alternating light-dark reaction process achieves continuous degradation of MO, and compared to traditional photocatalytic reactions, the degradation effect of MO is improved by approximately 10%. Projected density of states (PDOS) and Fermi level analysis indicate that strong interactions exist between Ag atoms and N, C atoms, confirming that the optimization of electronic properties and the enhancement of charge separation in the Sn-PTA-MI/Ag system are the main reasons for the increase in activity. This study provides a strategy for the continuous degradation of pollutants, which is of great significance for sustainable environmental remediation. Download: Download high-res image (180KB) Download: Download full-size image
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ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Yixin Liu,Wenyu Dong,Tao Wang,Jianwei Zhao,Peng Li
Conventional planar copper (Cu) current collectors severely limit the rate capability and cycle life of lithium-ion batteries. To overcome this, we report a three-dimensional (3D) porous Cu-Sn alloy architecture fabricated via scalable, cyanide-free electrodeposition and chemical dealloying methods. Its core innovation lies in the synergistic benefits of the porous structure and Cu-Sn alloying: the interconnected pores facilitate rapid Li⁺ transport and buffer graphite's volume expansion, while the intrinsic lithiophilicity of Sn ensures a stable, low-impedance interface. Consequently, an anode using the optimized porous collector delivers a remarkable specific capacity of 120.3 mAh g⁻¹ at 5C, representing a nearly five-fold enhancement in high-rate capacity retention over conventional Cu foil. The collector also confers exceptional cycling stability, enabling a 57.2 % capacity increase over 200 cycles, in stark contrast to the decay observed with standard foil. Electrochemical analysis confirms that the porous design drastically reduces electrode impedance while maintaining structural integrity. This work validates that engineering the current collector architecture is a powerful and effective strategy for developing high-performance, fast-charging batteries.
研究领域:
材料科学
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储能
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电化学
·
电池技术
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