Energy Technology
·
2015
·Vol. 3
·期 12
·1225-1232
·
IF 2.824
Hua Fan,Junfei Liang,Jinlong Zheng,Juanjuan Qi,Jie Yang,Pengfei Hu,Hewei Zhao,Juzhe Liu,Lin Guo
It is currently urgent to develop flexible lithium-ion batteries (LIBs) because of the growing interest and strong market demand of flexible or bendable electronics. However, the large-scale use of flexible LIBs is mainly limited by our capability to fabricate high-performance flexible electrodes. Here, we develop a facile, cost-efficient, and eco-friendly strategy to prepare flexible SnO 2 /nitrogen-doped graphene films (SNGFs) for LIBs. Significantly, the obtained binder-free, conducting agent-free, and current collector-free flexible electrodes exhibited high capacity, excellent cycling stability, and superior rate capability. The outstanding Li storage performance of the SNGF is primarily ascribed to its specific structure, and indicates its great potential as an anode material for flexible LIBs. Our new approach for the fabrication of flexible electrodes can be applied to various other electrode materials, which may be useful in flexible or bendable energy storage devices.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Hai-lin Ren,Yang Su,Shuai Zhao,Cheng-wei Li,Xiao-min Wang,Bo-han Li
SiO x (0 < x < 2) has been considered as one of the most promising anodes for lithium-ion batteries due to its high capacity and more stable cyclic charging and discharging performance, but it still has the drawbacks of lower intrinsic conductivity and larger volume expansion compared to graphite. For this purpose, Sn, a homologous element of Si, is selected in this paper, and the SiO x @SnO 2 heterostructure is constructed on the SiO x surface using simple solvothermal and calcination methods. The combination of DFT analysis and experimental results shows that the heterogeneous structure enhances the Si-O bond strength in SiO x , and coupled with the localised stresses due to the lattice differences between SiO x and SnO 2 alleviates the volume change of SiO x during lithiation /de-lithiation. The reversible capacity was 536.8 mAh g -1 after 300 cycles at 1C and 1152.4 mAh g -1 after 200 cycles at 0.5C. The construction of SiO x @SnO 2 heterojunction will also bring the Fermi energy levels into the valence band, which makes the material exhibit some metallic properties and improves the electrical conductivity enhancing the Li + diffusion.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 25
·11524-11534
·
IF 3.553
Han Qigang,Zhang Wenqiang,Geng Di,Li Yao,Zhang Xu,Han Zhiwu
A tin dioxide/carbon composite (SnO 2 @C) with controlled shape is fabricated using a two-step method, which includes preparation of SnC 2 O 4 precursors and subsequent heat treatment process. SnC 2 O 4 precursors with different morphologies are synthesized by controlling the different proportions of tin sources, and some characterization techniques are carried out to screen out the optimum precursors. And the precursors are further annealed to obtain nanostructured SnO 2 and coated with carbon film. Ultimately, shape-controlled SnO 2 @C anode materials are prepared, and the reaction process and electrochemical properties of SnO 2 @C composites as anode materials are further studied. The SnO 2 @C composite shows the capacity of 659.4 mAh g −1 after 100 cycles at a current density of 100 mA g −1 . Even at the rate of 2000 mA g −1 , the composite electrode can maintain a reversible capacity of 507.2 mAh g −1 . The excellent electrochemical performance is beneficial to the synergistic effect between the carbon coating film and the nanostructured SnO 2 , which provides sufficient lithium storage sites, good electronic conductivity and void space to relieve the volume expansion.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Advanced Energy Materials
·
2026
·
IF 25.5
Wendong Zhu,Qiuxiang Wang,Haoming Xing,Jing Zhang,Yuanyuan Wang,Yuhong Xu,Jiaxing Xiong,Rong Xuan,Wenwu Xu,Da Chen,Xiaohui Liu,Like Huang,Yuejin Zhu,Changlei Wang
Solution-processed SnO 2 nanoparticles are promising nonfullerene electron transport materials, yet their performance in low-bandgap (LBG) tin-lead perovskite solar cells (Sn-Pb PSCs) is hindered by inadequate charge transport and interface energy misalignment. To address these issues, we developed a SnO 2 -graphene quantum dot (GQD) electron transport layer (ETL) by functionalizing solution-processed SnO 2 with GQDs. Both theory calculations and experiments indicate the electron-bridging role of GQDs in perovskite/GQD-SnO 2 heterojunction, greatly facilitating directional charge transfer. Moreover, GQDs play a dual role by passivating defects on both SnO 2 and perovskite surfaces, while optimizing the energy level alignment at this critical interface. Consequently, the optimized LBG Sn-Pb PSCs exhibit significantly enhanced voltage and fill factor, achieving a champion efficiency of 23.38% with robust stability under ISOS-L-1 and ISOS-D-2 protocols. When integrated into all-perovskite tandem solar cells, the optimized device delivers a promising efficiency of 29.40%. This work enables the first viable inorganic ETL for realizing high-performance Sn-Pb PSC and its tandem applications.
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2026
·
IF 7.4
Guofa Li,Renjie Xiang,Huahao Wu,Zurong Huang,Shuya Huang,Zhaobing Tang,Jialong Zhao,Bingsuo Zou,Lishuang Wang
A synergistic bulk-interface modulation strategy is developed for SnO 2 -based QLEDs. • Ni-doped SnO 2 effectively suppresses oxygen vacancies and regulates electron transport. • ZnCl 2 interlayer passivates interfacial defects and enhances radiative recombination. • The optimized QLED reaches an EQE of 24.3% EQE and a T 95 lifetime of 2325.1 h. Quantum dot light-emitting diodes (QLEDs) often suffer from limited performance due to interfacial defects and imbalanced carrier injection in the electron transport layer (ETL). Here, we present a synergistic strategy that integrates bulk doping and interfacial passivation to enhance device performance. Ni 2+ -doped SnO 2 nanoparticles (NSO) are employed to regulate electron transport and suppress oxygen vacancies within the ETL. As a result, QLEDs based on NSO achieve an external quantum efficiency (EQE) of 16.1%. To further reduce interfacial defects, a ZnCl 2 interlayer is introduced between the ETL and the quantum dot emissive layer. This interlayer effectively passivates defects on interface of SnO 2 and quantum dot. Consequently, the EQE is increasedto 24.3%, and the T 95 operational lifetime (@1000 cd/m 2 ) is 2325.1 h, representing a 2.1-fold improvement. These results demonstrate that combining bulk mobility regulation with interfacial defect passivation is an effective approach for improving electroluminescence performance of SnO 2 -based QLEDs. Download: Download high-res image (233KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Heyu Wang,Ou Wang,Yu Tang,Wenxiu Xiao,Bao-Li An,Yongmei Zhao,Bo Lu,Xiaohong Wang,Jiaqiang Xu
As an effective sensitizer for chemiresistive hydrogen (H 2 ) sensors, the practical application of Palladium (Pd) is limited by the Sabatier principle, where intrinsically strong Pd─H binding leads to sluggish desorption kinetics and prolonged response and recovery time. A high-entropy alloying strategy was proposed to tailor the local coordination and electronic structure of Pd active sites and weaken the Pd─H binding. Pd x (FeCoNiCu) 1− x ( x = 0.05–0.35)high-entropy alloys (HEAs) were synthesized as sensitizers for SnO 2 to improve its H 2 sensing reactivity, especially its response and recovery rate. Pd 0.2 (FeCoNiCu) 0.8 -SnO 2 sensor exhibits short response and recovery time (0.6 s/2.0 s), a high response of 18.8 toward 100 ppm H 2 (4.06 times higher than Pd-SnO 2 ), a practical detection limit of 1 ppm and a long-term stability (>90% retention over 50 days). The working window of the sensor is also wider, which exhibits a linear response in both low (20–120 ppm) and high (4000–20 000 ppm) H 2 concentration ranges. Experimental analysis and theoretical calculation attribute this performance to the downshift of the Pd d -band center (from −1.84 to −2.57 eV). The electronic modulation alleviates the strong binding of hydrogen intermediates, thus leading to ultrafast response and recovery without compromising sensitivity.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Yunxu Yang,Xiaoxi Huang,Yong Shen Chua,Hooi Ling Lee
Fe–SnO 2 @NiO–NF removed 96.85% CIP within 150 min under solar light. • S-scheme heterojunction promotes charge separation and photocatalytic activity. • 3D NiO–NF support enables easy recovery and abundant active sites. • Over 94% degradation activity was retained after four cycles. • DFT and HPLC–MS reveal charge transfer and CIP degradation pathways. Photocatalysis is effective for antibiotic degradation but limited by poor charge separation and difficult recovery of powder catalysts. In this work, a macroscopic p–n heterojunction photocatalyst (Fe–SnO 2 @NiO–NF) was prepared on pre-oxidized nickel foam through in situ growth and microwave-assisted synthesis. XRD confirmed the coexistence of SnO 2 and NiO phases, while HRTEM and XPS analyses verified the successful construction of the Fe–SnO 2 /NiO heterojunction with intimate interfacial contact and interfacial electronic interaction. UV–vis DRS, PL, TRPL, EIS, and photoelectrochemical measurements demonstrated markedly improved light absorption, charge separation and transfer behavior, with a narrowed band gap of 2.92 eV and a prolonged average carrier lifetime of 1.2226 ns. Owing to the enhanced charge separation and the conductive 3D NiO–NF framework, Fe–SnO 2 @NiO–NF exhibited significantly improved photocatalytic activity for ciprofloxacin degradation under solar irradiation, reaching 96.85% removal within 150 min, while the immobilized catalyst could be readily separated from the aqueous solution. ESR and scavenging test identified •O 2 – and h + as the main reactive species, with •O 2 – playing the dominant role, while HPLC–MS revealed the degradation intermediates and pathways. Band structure analysis and DFT calculations demonstrated that the p–n heterojunction follows an S-scheme charge transfer mechanism, promoting efficient charge separation while preserving strong redox capability. The composite retained over 94% of its initial activity after four cycles, showing excellent stability and recyclability. This study provides a practical way to develop efficient and reusable photocatalysts for antibiotic wastewater treatment. Download: Download high-res image (182KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2026
·Vol. 16
·期 8
·707
·
IF 4.5
Zibin Hai,Jingwei Han,Mengyao Xue,Yunhua Zhang
In semiconductor photocatalysis, the strong redox ability of a wide band gap and the broad light absorption range of a narrow band gap are a pair of irreconcilable trade-offs. By combining semiconductors with different band gap widths and band edge positions, both of these advantages can be achieved simultaneously. A ternary Cu2O-SnO2/g-C3N4(CuSnCN) composite photocatalyst was prepared through the hydrothermal and calcination method. Structural analyses confirm the successful integration of truncated octahedral Cu2O, spherical SnO2, and layered g-C3N4, which extends the visible-light response to 650 nm. The optimized system achieves a remarkable 96.58% degradation of methyl orange (80 min, 0.2 g/L catalyst, pH = 3) through dual heterojunction synergies: p–n junctions (Cu2O/g-C3N4and SnO2/g-C3N4) and Z-scheme charge transfer (SnO2/Cu2O), with •O2−/h+identified as the dominant reactive species. This work establishes a tunable heterojunction platform for the elimination of multiple pollutants through engineered radical-generation pathways.
✓ 已验证
产品关联
DOI
高影响因子
Cell Reports Physical Science
·
2025
·
IF 7.3
Hongzhen Su,Xuesong Lin,Li He,Chao Gao,Dezhao Zhang,Haotian Zhang,Daxue Du,Hong Liu,Wenzhong Shen
Balance between coverage and performance in the electron transport layer (ETL) is crucial for maximizing the efficiency, scalability, and stability of large-area perovskite solar cells (PSCs). Here, a solution-based targeted chelating strategy is designed to construct a self-assembled conformal SnO 2 ETL on a textured transparent conductive oxide surface with submicron roughness. By fine-tuning the molecular architecture, the targeted chelating molecule with two-electron-donating group and conjugated structure, capable of electron redistribution, can bridge the targeted V O of SnO 2 nanoparticles and F O of transparent conductive oxide, respectively, which balances the interface charge dynamics. The use of a self-assembled conformal SnO 2 ETL modified with targeted chelating molecules enabled PSCs with efficiencies of 25.32% and 24.57% on aperture areas of 0.09 and 1.00 cm 2 , respectively, and 1,600-h operational stability based on the ISOS-L-3 protocol (maximum power point, continuous 1 sun illumination, 65°C, and ca. 50% relative humidity).
研究领域:
材料科学
·
可再生能源
·
界面化学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xuekun Yang,Fang Chen,Fangrong Qin,Peng Huang,Cheng Du,Yuanxin Jiang,Songjie Deng,Aolin Ding,Yang Gan,Weiliang Wang,Shusheng Pan,Haiming Huang,Shaolin Zhang
Two-dimensional (2D) graphene-like metal oxides are promising for gas sensing due to their high surface area to volume ratio. This study presents an optimized van der Waals stripping method for fabricating ultrathin In 2 O 3 and SnO 2 films and the In 2 O 3 / SnO 2 heterostructure. The heterojunction sensor demonstrated high performance ethanol detection at 100 ppm, with a response value (R a /R g ) of 13.93, rapid response/recovery times (7 s/29 s), and excellent selectivity. Density functional theory (DFT) simulations revealed that the enhanced performance originates from synergistic interfacial effects that promote electron transfer and selective ethanol adsorption. This work provides a scalable strategy for synthesizing 2D heterostructures and demonstrates their potential for developing advanced gas sensors.
研究领域:
材料科学
·
纳米技术
·
气体传感
·
表面化学
·
密度泛函理论
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Lili Xu,Dong Han,Qing Fu,An Du,Ruina Ma,Yongzhe Fan,Xue Zhao,Xiaoming Cao,Yu Tan,Shigang Jia,Dongli Zhang
To solve the defects of magnesium alloy micro-arc oxidation coatings with large holes and cracks, nanoparticles were introduced into the electrolyte to densify the coatings. In this study, MgO/SnO 2 composite coatings were prepared and the effects of SnO 2 concentration on the microstructure, corrosion resistance and photocatalysis of the composite coatings were investigated. The growth process of the coating was elucidated. The results showed that the addition of SnO 2 significantly improved the breakdown and cut-off voltages of the coatings, with increased up to 16 V. The coatings thickness, hardness and densification increased and then decreased with the addition of nano-SnO 2 concentration. When the concentration of SnO 2 reached 6 g/L, the MgO/SnO 2 composite coating had the most corrosion resistance. The corrosion potential decreased to 5.636 × 10 −9 A cm −2 , which was 3 orders of magnitude lower. The MgO/SnO 2 composite coating surface contained nano-SnO 2 particles to effectively enhanced the photocatalytic performance. The degradation efficiency was optimal up to 21.02 % after 3 h of light exposure.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Zhiqiang Liu,Hui Li,Huan Yao,Yi Zhuang,Runbo Gao,Zhiteng Wang,Zhenhe Zhu,Huixin Lan,Zeheng Li,Wenlong Cai
Constructing heterostructures is an effective strategy for the synthesis of high-performance anode electrode materials for lithium-ion batteries (LIBs). In this study, a “bubbling” PEGylated deep eutectic solvent (DES) method is utilized to synthesize SnO 2 /SnS heterostructure nanodots anchored on carbon nanosheets (SnO 2 /SnS@CN). A comprehensive investigation of the physical and chemical processes during the “bubbling” reaction offers in-depth insights into the underlying mechanism of the PEGylated DES approach. The carbon nanosheet structure enhances the electrical conductivity between SnO 2 particle units and, due to its excellent mechanical properties, significantly contributes to material stability. The nanodot configuration of the heterostructure further improves electron transfer and lithium-ion (Li + ) migration within the SnO 2 units. The SnO 2 /SnS@CN material exhibits outstanding Li + storage performance, achieving a high capacity of 675.6 mA h/g at 1 A/g after 1000 cycles. These findings establish a theoretical foundation for preparing heterostructure anode materials using the “bubbling” PEGylated DES method.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）