Surfaces and Interfaces
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2025
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IF 6.3
Muhammad Sanaullah Shah,Zhang Zhenyu,Sohail Ahmad,Wang Shuiying,Hou Hongying,Zuo Xiaoqing,Muhammad Zia Ullah Shah
The search of an efficient and stable electrode material has led to the growing interest in using transition metal-based nanocomposites in supercapacitors. In this work introduces the NiSe 2 -MnS hybrid material synthesized by a low-cost solution to overcome the shortcomings of single-component systems to exploit dual-phase synergy. MnS was incorporated in NiSe 2 , which has good conductivity of electricity, and the combination of both leads to an electrochemical compound having enhanced performance. Effective formation of the NiSe 2 -MnS nanostructure with good integration was confirmed by careful structural and morphological studies. Electrochemical analysis revealed that the composite had a spectacular specific capacitance of 835 F/g in three- electrode system and 134 F/g in two- electrode set up. Interestingly, the electrode still had 85.1%, After 5,000 consecutive charge -discharge cycles at a current density of 8 A/g, the material still had a considerable fraction of its initial capacitance, which shows its excellent cycling stability. In general the NiSe 2 -MnS hybrid system is a cost effective but very efficient pathway to the future of energy storage.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Jing Li,Chen Yuan,Huiting Xu,Huibin Liu,Junjie Qi,Zhaohua Jiang,Sai Dong,Rongyu Guo,Zhijie Cui,Wenchao Peng,Jiapeng Liu
Conversion-type aqueous copper-selenium (Cu-Se) batteries have gained considerable attention due to their high theoretical capacity, safety and environmental friendliness. However, the multi-electron intermediate conversion reaction of selenium cathode generally possesses sluggish kinetics, which seriously impedes the further development of Cu-Se batteries. Herein, the porous V 2 C@VSe 2 heterostructure (P-V 2 C@VSe 2 ) with built-in electric field (BIEF) were successfully synthesized by the sacrificial template method and in situ selenization strategy, which were used as the selenium host materials for aqueous Cu-Se batteries to effectively enhance the selenium conversion reaction kinetics. The porous structure of P-V 2 C@VSe 2 not only provides faster access for the transport of polyselenide intermediates during electrochemical reactions, but also exposes more catalytic active sites, which in turn improves the catalytic activity of the material. In addition, the built-in electric field generates at the interface of the P-V 2 C@VSe 2 heterostructure facilitates the acceleration of charge transfer and thus improves the kinetics of the redox reaction of selenium. Benefiting from the synergistic effect of the porous structure and the built-in electric field, the Se/P-V 2 C@VSe 2 cathode possessed a discharge specific capacity of 1182.2 mAh g −1 at a current density of 1 A g −1 , which was much higher than those of Se/P-V 2 C (796.6 mAh g −1 ) and Se (597.0 mAh g −1 ) cathodes. In addition, it also maintained a specific capacity of 1054.6 mAh g −1 after 6000 cycles at 10 A g −1 , demonstrating excellent cycling stability. Meanwhile, a series of characterizations and density functional theory calculations were performed to systematically explore the conversion mechanism of aqueous Cu-Se batteries. This work provides promising insights into the construction of high-performance MXene-based catalytic host materials for aqueous Cu-Se batteries.
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Surfaces and Interfaces
·
2025
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IF 6.3
An Jiang,Yaofeng Shi,Feng Gao
The oxygen evolution reaction (OER) confronts significant challenges due to its intricate electron transfer mechanism, which leads to slow reaction kinetics and high energy barriers. Traditional catalysts possess drawbacks of cost and scarcity, limiting their applicability on a large scale. In this study, we developed a heterojunction catalyst via a hydrothermal method, in situ growing Fe 2 NiSe 4 on the surface of NiFePBA (NiFePBA/Fe 2 NiSe 4 ). The built-in electric field (BIEF) generated at the NiFePBA/Fe 2 NiSe 4 heterojunction showed improved catalytic activity for OER, where the interface electron transfer was markedly enhanced. By modulating the degree of selenization, the inner BIEF intensity can be finely tuned, by which the lowest charge transfer resistance (R ct ) value (2.38 Ω) was obtained for NiFePBA/Fe 2 NiSe 4 -40. The optimized NiFePBA/Fe 2 NiSe 4 -40 structure demonstrated better electrocatalytic activity in 1 M KOH, achieving high current densities of 10 mA cm -2 and 100 mA cm -2 at low overpotentials of 275 mV and 350 mV, respectively. Additionally, the catalyst exhibited excellent stability and a low Tafel slope of 62.60 mV dec -1 . Our work provides new guidance and strategy for the development of high-performance OER catalysts.
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ACTA MATERIALIA
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2025
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IF 9.3
Jian Xu,Jingchen Zhang,Zeyu Hao,Xiliang Gong,Zeshuo Meng,Yutong Zhao,Shulong Wang,Haoteng Sun,Hongwei Tian,Dawei Su
Bismuth oxide, with its large internal spaces and adjustable structures, is a promising electrode material for zinc-ion batteries (ZIBs). However, its application is limited by poor reversibility and rapid capacity fading in neutral zinc-ion electrolytes. Here, we introduce selenium into bismuth oxide using chemical vapor deposition, precisely controlling the Se content by adjusting the gas flow rate. The Se-doped materials, particularly CC/Bi 2 O 2.5 Se 0.5 and CC/Bi 2 O 2 Se, exhibit significant improvements in specific capacity and cycling stability. CC/Bi 2 O 2 Se achieves a maximum specific capacity of 312.5 mAh g −1 at 0.1 A g −1 , with a retention rate of 74.6% after 4000 cycles at 2 A g −1 . The enhanced performance is attributed to the narrowed band gap and improved electrical conductivity resulting from Se doping, which facilitates electron and ion transport. More importantly, Se incorporation mitigates the formation of detrimental by-products, ensuring more reversible and efficient Zn-ion storage. It also stabilizes the Bi 3+ ↔Bi° conversion pathway observed during cycling, providing a metal-centered rationale for the improved reversibility. This work highlights the importance of electronic structure regulation in optimizing the performance of metal oxide electrodes and provides valuable insights for the rational design of high-performance energy storage materials.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-10
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IF 15.7
Li Lijia,Chen Jiajun,Hu Laigui,Qiu Zhijun,Zou Zhuo,Liu Ran,Zheng Lirong,Cong Chunxiao
Collective vibration is pivotal for materials’ thermal, electrical, phase transition and topological properties. Lately, the rising of moiré superlattices, characterized by overarching periodicity of moiré pattern, generates highly tunable interfacial structures that manipulate collective excitations in material at the atomic scale. Here, we experimentally demonstrate moiré collective vibrations, the mechanical counterparts of moiré excitons, at heterointerfaces of twisted tungsten diselenide/tungsten disulfide heterobilayers. Using helicity-resolved inelastic Raman scattering, we find chiral interfacial phonons carrying angular momentum analogous to that of chiral bulk phonons in quartz, enabling unprecedented spectral resolution of rich vibrational modes at heterointerface in a few atomic layers. Upon mutual torsion of heterobilayers, we observe terahertz interlayer vibrations proportional to moiré periodicity as a periodic function of rotation angles, demonstrating moiré-tuned interlayer modes which couple to Coulomb-bound electron-hole pairs in interlayer moiré excitons. In low-angle strong coupling regime, interlayer dynamics exhibit a distinct long-lived breathing mode with zero angular momentum and pronounced high energy, highlighting phonon-hybridization character wherein intralayer breathing vibrations are folded into moiré mini-Brillouin zone by spatial periodicity and hybridize with interlayer vibrations. Our findings establish moiré collective vibrations as candidates for exploitation in energy-efficient thermal management, strongly correlated electrical engineering, and new emergent topological phononics.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2025
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IF 14.3
Shanshan Tan,Hanwen Hu,Yuan Wang,Li Ma,Luping Song,Jun Tang,Hongju Zhou,Kun Zheng,Guangkun Ren,Lei Yang
Compositing a secondary phase in Ag 2 Se can usually tune the electron and phonon scattering to improve the thermoelectric performance. However, the intrinsically high carrier concentration still limits the performance optimization. Here, we employ a modulation decoration strategy to simultaneously achieve submicron-scale constituents and compositional modification for synergistic optimization of thermoelectric properties . Amorphous nano Sb 2 S 3 has been decorated on the surface of Ag 2 Se powders, and S was added into the Ag 2 Se matrix through an ion exchange reaction accompanied by the formation of a crystal/amorphous mixed secondary phase of Sb 2 (S, Se) 3 . The S doping reduced the excessive intrinsic carrier concentration, leading to modified electrical transport properties and significantly reduced electrical thermal conductivity. On the other hand, introducing the S dopants and the crystal/amorphous interfaces into the Ag 2 Se matrix could increase the lattice anharmonicity, further contributing to the reduced thermal conductivity. Consequently, the Ag 2 Se-0.4 % Sb 2 S 3 sample obtains a high average zT value of > 1 in the temperature range of 300–390 K. In addition, the maximum cooling temperature difference of over 85 K can be predicted in an Ag 2 Se/Ag 2 Se-0.4 % Sb 2 S 3 segregated module at the hot side temperature of 350 K.
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ACS Photonics
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2025
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IF 6.7
Haixiao Xu,Yichi Zhang,Yousheng Zou,Zhi Li,Yu Gu
Recent advances in micro- and nanophotonic fabrication techniques have enabled precise control over thermal emissivity, unlocking a variety of intriguing applications. With self-adaptive features, dynamic tunability promises transformative potential but often depends on specialized materials with infrared optical properties responsive to external stimuli, limiting material choices and design flexibility. Herein, we introduce a new framework for dynamic emissivity modulation that exploits the phase-dependent energy dissipation, where the electromagnetic phase controls the amplitude of the total electric field and, consequently, the dissipation rate of the thermal emitter near metallic surfaces. Employing a bilayer system composed of Ag2Se quantum dots (QDs) and a LiF spacer layer on a metallic substrate, we experimentally demonstrate a tunable range of spectral emissivity (Δϵλ) of ∼0.7 and a tunable range of total integrated emissivity in the 8–13 μm waveband (Δϵ) of ∼0.5. The theoretical result also suggests that a dynamic range of the total emissivity as large as 0.6 is feasible by replacing the spacer layer with thermal-responsive polymers, electroelastic materials, magnetoelastic materials, or other phase modulating layers. This design provides a versatile platform for integrating various stimuli-responsive materials to enable dynamically tunable thermal emissivity, paving the way for advanced applications in self-adaptive thermal management and smart thermal systems.
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ACS Sensors
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2025
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IF 9.1
Xinxin He,Xuanyu Ren,Xuyang An,Ping Guo,Yinhua Hu,Tiezhu Liu,Jia Zhang
Monitoring sulfur dioxide (SO2) is crucial for protecting human health as exposure to this pollutant can cause respiratory and cardiovascular illnesses, particularly in vulnerable populations. The primary materials currently used for detecting SO2 are metal oxides. However, it is still a challenge to detect SO2 at the parts per billion (ppb) level via these materials even when operated at high temperatures. Herein, we propose a highly sensitive SO2 sensor that operates at room temperature (RT). The sensing material employed is the hydrothermally synthesized bismuth oxyselenide (Bi2O2Se) nanosheets. The Bi2O2Se sensor exhibits a response value of 34% to 1 ppm SO2 and a detection limit of 20 ppb, which surpasses most SO2 sensors reported to date. The superior sensitivity and selectivity of Bi2O2Se nanoppbsheets toward SO2 are attributed to their strong adsorption energy (−0.76 eV) and significant electron transfer (2.205 e) between Bi2O2Se and SO2 molecules, as confirmed by density functional theory (DFT) calculations. Finally, a wireless SO2 sensing system is designed and implemented based on the SO2 sensor, enabling the detection of trace-level SO2 in indoor environments such as factories and laboratories, thereby protecting the well-being of personal further.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Bingbing Xiao,Yuanli Li,Hongyuan Zhou,Wanlin Zhou,Jiaxin Su,Zixian Liu,Zhaotang Zhang,Heng Wang,Shu-Long Li,Jun Wang,Xiaofeng Zhu
Electrochemical synthesis of H 2 O 2 via 2-electron oxygen reduction reaction (2e-ORR) renders sustainable alternative to anthraquinone process. However, extensively developed carbon-based electrocatalysts commonly present vulnerability and decayed selectivity in higher reductive potentials. Here, based on the density functional theory simulations, the 2e-ORR capability of oxygen vacancy-rich NiO with exposed (001) is revealed. The predicted end-on manner of oxygen adsorption on the Ni sites contributes the preservation of O O bonds and prevents the over-reduction of OOH* to H 2 O, thereby facilitates H 2 O 2 formation. Moreover, the according NiO catalyst is experimentally prepared and decorated with island-like NiSe 2 , which switches the rate-determining step of ORR from the first to second charge transfer with lowered Tafel slope. Consequently, the developed NiO-NiSe 2 catalysts achieve excellent Faraday efficiency of >95 % within a wide electrochemical window (0–0.6 V RHE ) and deliver stable H 2 O 2 yield of ∼1.2 mol g cat −1 h −1 for over 50 h, overwhelming most transition metal compounds. Meanwhile, practical pulp bleaching is also enabled by real-time production of H 2 O 2 from NiO-NiSe 2 -based flow cells. This work offers new insights into the design of non-carbon catalysts towards 2e-ORR, deepening the understanding of transition metal compounds in electrocatalysis.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Zong Jingui,Liang Yazhan,Liu Fan,Zhang Mingzhe,Song Kepeng,Feng Jinkui,Xi Baojuan,Xiong Shenglin
Compared with lithium-ion batteries (LIBs), sodium-ion batteries (SIBs) are an alternative technology for future energy storage due to their abundant resources and economic benefits. Constructing various defects is considered to be a common viable means of improving the performance of sodium storage. However, it is of significance to thoroughly scrutinize the formation mechanism of defects and their effects and transition during the charge–discharge process. Here, twin structures are introduced into ZnSe 0.7 Te 0.3 nanocrystals by doping of Te heteroatoms. The Te dopants are visualized to locate in the lattices of ZnSe by spherical aberration electron microscopy. The formation of twin structures is thermodynamically promoted by Te heteroatoms partially replacing Se based on the theoretical calculation results. Moreover, calculation results show that with the increase of twin boundaries (TBs), the sodium diffusion energy barrier is greatly reduced, which helps the kinetics of sodium ion diffusion. In the connection, the composition and amount of TBs are optimized via tuning the doping level. The combined effect of point defects and twin structures greatly improves the sodium storage performance of ZnSe 0.7 Te 0.3 @C. Our work reveals the mechanism of the point defect on the twin plane defect and systematically investigates their effect on the electrochemical performance.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Immanuel Paulraj,Vinothkumar Lourdhusamy,A.S. Niranjan,Chia-Jyi Liu
The thermoelectric properties of a series of organic–inorganic hybrid and ternary composites comprising Tellurium (Te)/Polypyrrole–carbon composite (PPy C), Te/Ethylene glycol (EG)–poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), Te/EG–PEDOT:PSS/PPy-C, and Te combined with acid (hydrochloric acid (HCl), sulfuric acid (H 2 SO 4 ), and nitric acid (HNO 3 )) post-treated PEDOT:PSS at loadings of 20, 50, and 90 wt% were systematically investigated. Among the acids examined, HNO 3 post-treatment reduces electrical resistivity while largely retaining the Seebeck coefficient, thereby increasing the power factor. Increasing the HNO 3 -treated PEDOT:PSS content further suppresses total thermal conductivity, primarily due to the polymer's intrinsically low thermal transport. The optimal p -type performance is obtained in the 90 wt% HNO 3 -treated PEDOT:PSS/Te hybrid composite, achieving a peak zT of 0.16 at 450 K. For the n -type counterpart, the Ag 2 Se/Se (1.5 wt%) composite achieves a maximum zT of 0.9 at 375 K. A 12-pair thermoelectric generator (TEG) integrating these optimized p - and n -type legs produces a maximum output power of 17.4 μW (111 mV, 317 μA) and a power density of 13.7 μW·cm −2 at ΔT = 80 K, with respective p -leg, n -leg, and device efficiencies of 0.58 %, 3.65 %, and 2.68 %. These results demonstrate the potential of acid-engineered organic–inorganic hybrids for efficient mid-temperature thermoelectric applications and pave the way for lightweight and high-performance TEG devices.
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COLLOIDS AND SURFACES B-BIOINTERFACES
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2025
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IF 5.6
Shaodong Zhai,Nan Hu,Zhenghao Wang,Hongnv Zhang,Xiang Guo,Ruiping Zhang
Sustained stress overload results in pathological hypertrophy, which is characterized by fibrosis and excessive calcium ion accumulation in the heart. This calcium overload subsequently induces a surge of reactive oxygen species (ROS) in cardiomyocytes, further aggravating cardiac fibrosis and accelerating the progression of cardiac remodeling. Fortunately, the calcium channel blocker amlodipine possesses antihypertrophic and antifibrotic properties. Given these features, nano-formulating common calcium channel blockers offers potential for treating myocardial hypertrophy in the absence of specific drugs. Hence, a side-chain selenium-containing polymer was constructed (PSe@Amd-TAG) modified with CREKA loaded with the amlodipine to achieve targeted accumulation and localized release in hypertrophic myocardium. The results showed that the PSe@Amd-TAG improved cardiac function in transverse aortic constriction (TAC) mice, and effectively suppressed the expression of myocardial hypertrophy markers ANP, BNP, and MYH7. PSe@Amd-TAG inhibited the enlargement of cardiomyocyte, inhibited cardiac fibrosis, and suppressed the production of calmodulin in the heart. Additionally, PSe@Amd-TAG effectively suppressed intracellular calcium levels and inhibited the NFκB signaling pathway. Therefore, this study provides a novel strategy for targeted inhibition of calcium level in cardiomyocytes to treat TAC-induced myocardial hypertrophy.
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