Journal of Energy Storage
·
2026
·
IF 10.7
Yanjiao Li,Yechen Du,Aiyun Hu,Yingying Chen,Wenzheng Zhu,Jiaxiang Wang,Hongxun Yang,Hao Tian
Heterointerface engineering has emerged as a promising strategy to enhance the sluggish reaction kinetics and structural instability of conversion-type anode materials for sodium-ion batteries. Herein, a built-in electric field-enhanced CoSe 2 -NiSe 2 heterojunction embedded in flexible nitrogen-doped carbon nanofibers (CoSe 2 -NiSe 2 @CNFs) is constructed via electrospinning and selenization route. The heterointerface induces charge redistribution and accelerates ion diffusion, while the conductive and elastic CNF network effectively accommodates volume changes and maintains structural integrity. As a result, the CoSe 2 -NiSe 2 @CNFs anode achieves a high reversible capacity of 413.8 mAh g −1 at 0.2 A g −1 after 100 cycles and exhibits remarkable long-term cyclability, retaining 309.7 mAh g −1 after 1000 cycles at 1 A g −1 . The reversible conversion mechanism and interfacial stability are systematically validated through ex situ experimental measurements and DFT calculations, which confirm enhanced Na + adsorption and optimized ion transport kinetics at the heterointerface. Moreover, paired with a Na 3 V 2 (PO 4 ) 3 cathode in a full cell, it demonstrates stable cycling performance with low polarization. This work provides an integrated interface-confinement design strategy toward high-rate and a highly fatigue-resistant electrode with exceptional cycling stability.
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Advanced Science
·
2026
·
IF 14.1
Zhaohui Wang,Xiaojin Deng,Xujuan Huang,Yuhang Pan,Yao Qin,Lu Zhang,Le Xu,Tianyi Qin,Deteng Zhang,Yi Ma,Yalong Wang
The lack of selective antifungal agents remains a major clinical challenge. Here, we discover facet-polysaccharide matching between polyvinylpyrrolidone-directed tetragonal CuFeSe 2 nanocrystals (CFS-P) and fungi drives ultrapotent and highly selective fungicidal activity. High-index facets uniquely exposed on CFS-P show markedly enhanced affinity for mannan, the dominant polysaccharide of the fungal outer cell wall, as validated by DFT, molecular dynamics, and calorimetry. Mannan recognition promotes efficient fungal internalization of CFS-P and its preferential accumulation in vacuoles, leading to vacuolar cavitation, calcium overload, mitochondrial hyperpolarization, and transcriptional reprogramming of metal and vacuole-associated pathways. CFS-P achieves therapeutic efficacy comparable to amphotericin B while exhibiting superior mammalian biocompatibility. This work reveals a previously unrecognized wall-vacuole disruptive antifungal mechanism and enlightens the exploration of facet-encoded biological recognition in anti-infective design.
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Materials
·
2026
·Vol. 19
·期 7
·1337
·
IF 3.7
Xiaogong Lv,Shumin Zhang,Yanchun Yang,Guonan Cui,Wenliang Fan,Xing Yue
Cu 2 ZnSn(S,Se) 4 (CZTSSe) is a candidate thin-film photovoltaic material; however, its performance is restricted by innate defect-induced nonradiative recombination. Low-concentration Ge doping has been identified as an efficient way to mitigate these defects, but the selenization temperature remains an important process parameter that governs the structure and optoelectronic characteristics of CZTSSe absorbers. In the present work, low-concentration Ge-doped Cu 2 ZnSn 0.95 Ge 0.05 S 4 (CZTGS) precursor films were synthesized through a green, n-butylammonium butyrate-based solution approach. The effects of the selenization temperature (530–570 °C) on the microstructure, composition, and photovoltaic performance of Cu 2 ZnSn 0.95 Ge 0.05 (S,Se) 4 (CZTGSSe) films and devices were comprehensively investigated. X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray spectrometer (EDS), atomic force microscopy (AFM) were performed to comprehensively characterize the synthesized samples, and the results suggested that the selenization temperature dramatically altered the film grain growth, crystallinity, elemental retention and surface roughness. Specifically, the film that underwent selenization at 550 °C presented the best crystallinity, which was accompanied by large-scale even grains, efficient Ge 4+ addition to the kesterite lattice and the lowest surface roughness. These better properties in terms of structure and composition resulted in the lowest carrier transport resistance ( R s = 8.6 Ω∙cm 2 ), improved recombination resistance ( R j = 5.9 kΩ∙cm 2 ), inhibited nonradiative recombination, and prolonged carrier lifetime ( τ EIS = 35.8 μs). Therefore, the resulting CZTGSSe thin-film solar cell had an 8.69% better power conversion efficiency (PCE), while its open-circuit voltage ( V OC ) was 0.42 V, the fill factor (FF) was 55.51%, and the short-circuit current density ( J SC ) was 37.71 mA·cm −2 . Our results elucidate the mechanism by which the selenization temperature regulates low-concentration Ge-doped kesterite devices and provide more insights into the optimization of processes for cost-effective, high-performance, and green thin-film solar cells.
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ACS Applied Bio Materials
·
2026
·
IF 5.6
Xiuying Chen,Haoqin Zheng,Lile Dong,Peng Zhang
Triple-negative breast cancer (TNBC) poses a serious threat to the lives and health of patients, as traditional treatments are limited by psychological burden, systemic toxicity, or drug resistance. Photonic hyperthermia triggered by the second near-infrared (NIR-II) window is a promising minimally invasive strategy. Herein, we synthesized SnSe nanosheets via a simple, scalable method for NIR-II-triggered photonic tumor hyperthermia. SnSe nanosheets exhibited irregular lamellar structures with uniform Sn/Se distribution, favorable biocompatibility, and prominent photothermal performance under NIR-II irradiation. Under NIR-II irradiation, the SnSe+NIR-II group significantly suppressed tumor growth. This work offers a platform based on NIR-II light-induced photonic tumor hyperthermia, providing a minimally invasive strategy for TNBC treatment.
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CRYSTENGCOMM
·
2026
·
IF 2.4
Shulei Liang,Yingjun Zhou,Yujun Li,Chuanhe Ma,Hailong Wang
This study investigated the impact of MoOx blocking layer prepared by magnetron sputtering and air-annealing methods on the photoelectric performance of CZTSSe solar cells. The results showed that the MoO2 layer prepared by sputtering method exhibited more uniform and dense surface morphology, with an optimal thickness of 10 nm for the cell's photoelectric performance. The electrochemical impedance spectroscopy (EIS) analysis revealed that the MoO2 blocking layer effectively suppressed carrier recombination, increasing the recombination resistance (Rct) from 4516 Ω to 11342 Ω and significantly enhancing the minority carrier lifetime (τ) from 32 μs to 146 μs. Additionally, light response (I-T) testing demonstrated that devices with the MoO2 blocking layer achieved a peak photocurrent (Imax) four times higher than that of the control group under high duty cycle (PWM=90%), with an outstanding on/off ratio of 7×10 5 and a shortened pulse rise time (τrising) of 2 μs.These results confirm that the MoO2 blocking layer markedly enhanced carrier mobility and dynamic response by effectively suppressing the formation of MoSe2 and mitigating the decomposition of the CZTSSe absorber layer. Consequently, the device's power conversion efficiency (PCE) was boosted from 8.26% to 11.45%. This work provides valuable insights into interface engineering for developing high-performance CZTSSe photovoltaic devices.
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Advanced Optical Materials
·
2026
·
IF 7.2
Zihao Yang,Haigang Hou,Xiangzhao Zhang,Dongliang Zhang,Quanjiang Lv,Jian Yang,Guiwu Liu,Songhua Cai,Junlin Liu,Guanjun Qiao
Simultaneously achieving high photothermal and thermoelectric conversion efficiencies in flexible thin films remains challenging, limiting the performance of ultra-broadband photothermoelectric (PTE) detectors. This study introduces a two-step approach involving silver pre-deposition and vapor-phase selenization, based on a solid-vapor diffusion mechanism, to fabricate a flexible carbon nanotube (CNT) film modified with Ag 2 Se nanoparticles (CNT@Ag 2 Se), synergistically enhancing its light absorption and thermoelectric properties. By optimizing the selenization time, the carrier transport behavior was effectively modulated, yielding a maximum power factor of 84.35 µW·m −1 ·K −2 at room-temperature after 20 min of treatment. The incorporation of Ag 2 Se nanoparticles also significantly improved light absorption and photothermal conversion, enabling broad-spectrum absorption across 200–2500 nm with a 47% enhancement in photothermal performance. As a result, the CNT@Ag 2 Se film exhibited a doubled voltage output compared to pristine CNT films, along with ultra-broadband detection capability. Laser position-dependent measurements and synchronized infrared thermal imaging confirm that the photovoltage originates from a light-induced temperature gradient driving directional carrier diffusion, illustrating a photothermal-thermoelectric coupling mechanism. Systematic characterization and simulation further reveal the underlying mechanisms for the performance improvement. Furthermore, the film demonstrates excellent flexibility, retaining a stable output under multiple bending cycles and demonstrating outstanding non-contact sensing capabilities.
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International Journal of Electrochemical Science
·
2026
·
IF 3.9
Haoliang Yu,Haipeng Wang,Shuzheng Wang,Xiaohong Hu
Rechargeable magnesium-lithium hybrid batteries (MLHBs) are promising for energy storage applications due to their high volumetric energy density, enhanced safety, and reliable performance. However, the advancement of MLHBs has been impeded by the low median discharge voltage and insufficient cycle life of cathode materials. In this work, NbSe 2 pre-intercalated with PY 14 + ions is employed as the cathode for MLHBs, delivering a median discharge voltage as high as 1.30 V. The intercalation of PY 14 + effectively expands the interlayer spacing of the material, which provides wider diffusion channels for ion transport and reduces the migration barrier. This structural modification significantly enhances the rate capability of the material, enabling a reversible capacity of 58.71 mAh g -1 even at a high current density of 2000 mA g -1 . Simultaneously, PY 14 + ions act as structural pillars, mitigating the collapse of the layered structure during cycling and thereby improving the cycling stability, with a capacity retention of 61.65% after 1000 cycles at 500 mA g -1 . Kinetic analyses and ex situ characterization confirm an increased contribution from the diffusion-controlled process and a highly reversible conversion reaction mechanism in the PY 14 + -intercalated NbSe 2 cathode. This study provides valuable insights for developing high-performance cathodes for MLHBs.
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BIOMATERIALS
·
2026
·
IF 13.6
Banruo Xianyu,Zeyu Lu,Huaping Xu,Tianyu Li
Tumor-associated macrophages (TAMs) have emerged as a promising immunotherapeutic target in non-small cell lung cancer (NSCLC). However, the indiscriminate cytotoxicity of chemotherapies and the immunosuppressive tumor microenvironment paradoxically impede this potential. To overcome these limitations, we engineered β -selenoester–crosslinked nanocapsules delivering Gefitinib, designed to induce opposite cell fates in cancer cells and macrophages. In cancer cells, the Se-C bond in β -selenoester is ultrasensitive under the intrinsic reactive oxygen species (ROS) level. It generates acrylates through selenoxide elimination reaction, which further depletes intracellular GSH to regenerate cytotoxic ROS. The ROS-triggered positive-feedback induces nanocapsule disassembly, enabling rapid Gefitinib release and apoptosis induction. The released Gefitinib also disrupts the CD47-SIRP α "don't eat me" axis to enhance macrophage phagocytic activity. In macrophages, low ROS level limits Gefitinib exposure, but the selenium metabolites generated from the elimination reaction are sufficient to promote macrophage activation. This selective cell fate programming yielded no macrophage toxicity at cancer-cell IC 50 levels and a 91.1 % tumor suppression in vivo. Collectively, this work demonstrates a divergent cell fate induction strategy based on β -selenoester–crosslinking for integrated TAM-mediated immunotherapy.
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Nano Energy
·
2026
·
IF 16.7
Xiaoyang Wang,Zuxiong Zhou,Mengjie Lian,Geng Cheng,Jie Gao,Junheng Pan,Lei Miao,Takao Mori
A photothermoelectric micro-engine is designed via TiO 2 /Ag 2.3 Se heterojunction. • Seebeck-induced electromotive force recovers waste heat for charge separation. • Multi-field coupling generates a 2.3 mV potential, yielding a 1 + 1 > 2 synergy. • FEM models and in-situ Raman confirm autonomous thermodynamic charge pumping. • The self-powered micro-engine achieves 93% efficiency for water remediation. The development of multi-field synergistic catalysis has emerged as a critical frontier for maximizing energy utilization. However, performance of multi-field systems is often bottlenecked by inefficient charge-carrier migration arising from complex field coupling. Herein, we report a high-performance n-type TiO 2 /Ag 2.3 Se photothermoelectric (PTE) catalyst designed to overcome these transport limitations. By integrating thermoelectric functionality into the photocatalytic framework, we establish a 40°C temperature-gradient that triggers a robust Seebeck-driven internal electric field. This PTE coupling yields a photovoltage of 2.3 mV, significantly exceeding the linear summation of individual thermal (1.4 mV) and photo (0.3 mV) contributions. In-situ Raman spectroscopy and finite element method simulations reveal that the synergistic photothermal interaction induces a highly directional flux of charge carriers, effectively suppressing recombination and accelerating interfacial kinetics. Remarkably, the TiO 2 /Ag 2.3 Se composite achieves a photocatalytic degradation efficiency of 93%, far surpassing the combined totals of discrete photocatalysis (41%) and thermoelectric catalysis (13%). This pronounced “1 + 1 > 2” synergy demonstrates a paradigm shift in catalyst design, where wasted thermal energy is converted into a functional driving force for charge separation. This work not only provides deep mechanistic insights into thermal-induced interfacial charge transfer but also establishes a strategic framework for engineering waste-heat-driven micro-engines for self-powered environmental sustainability. Download: Download high-res image (140KB) Download: Download full-size image Thermoelectric modulation in a TiO 2 /Ag 2.3 Se heterostructure converts thermal dissipation into an electromotive force, driving highly efficient solar-to-chemical energy conversion.
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Sustainable Materials and Technologies
·
2026
·
IF 9.7
Peng Gu,Yihe Fan,Wenjing Cui,Huanyu Guan,Shuang Shi,Zhuang Cai,Shengli Wang,Guofeng Wang,Jinlong Zou
Regulating the electronic structure of active sites through electronegativity difference offers a promising route to high-efficiency bifunctional electrocatalysis, yet systematic comparisons based on isostructural model catalysts remain limited. Herein, Cu 2 O nanocubes are used as a common precursor template to construct structurally comparable Cu 2 X (X = S, Se, and Te) nanocubes via a vapor-phase isomorphous substitution strategy for alkaline water splitting. Among the obtained catalysts, Cu 2 Se exhibits the best bifunctional activity, requiring overpotentials of only 56 mV for the hydrogen evolution reaction (HER) and 131 mV for the oxygen evolution reaction (OER) at 10 mA cm −2 . When employed as both the cathode and anode, the Cu 2 Se||Cu 2 Se electrolyzer delivered 10 mA cm −2 at 1.52 V, with a Faradaic efficiency close to 100%, and retained 95.2% of its initial activity after 150 h of continuous operation. In a single-cell anion exchange membrane water electrolyzer, the Cu 2 Se-based device further achieved 500 mA cm −2 at 2.89 V and operated stably for 1000 h at 70 °C. Structural and electrochemical analyses indicate that chalcogen substitution preserves the nanocube framework while modulating the local electronic structure of Cu sites. The moderate electronegativity difference between Cu and Se is found to be particularly favorable for optimizing the electron density of Cu, increasing electrochemically accessible active sites, and accelerating interfacial charge transfer. This study establishes a structurally comparable Cu 2 X platform for elucidating electronegativity difference driven electronic regulation and offers a feasible strategy for designing efficient Cu-based bifunctional catalysts for alkaline water splitting.
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ACS Photonics
·
2026
·Vol. 13
·期 17
·5272-5281
·
IF 6
Wang Ya,Wang Faxin,Ran Xi,Du Zaiming,Yin Mingyang,Zhang Hanyu,Zhang Xingchen,Liu Jing,Yao Haifeng,Cao Jie,Lan Xinzheng,Tang Xin,Hu Huicheng
Spectral-selective photodetection across the visible
to short-wave
infrared (VIS–SWIR) range is highly desirable for advanced
imaging and sensing applications. Here, we report a bias-switchable
colloidal quantum-dot (CQD) n – p – n photodetector based on vertically stacked
PbS and PbSe CQD heterojunctions with oppositely oriented built-in
electric fields. This architecture allows electric-field redistribution
under external bias, enabling controllable carrier transport and wavelength-dependent
response. A ZnTe interlayer is introduced to suppress dark current
and enhance bias-polarity-dependent spectral selectivity. By reversing
the bias polarity, the device electrically switches between VIS +
near-infrared (NIR) and NIR + SWIR detection modes within a single
pixel. The photodetector exhibits low dark current densities and high
detectivities of 4.3 × 10 11 , 2.6 × 10 11 , and 1.6 × 10 11 Jones at 600, 1000, and 1550 nm,
respectively. Integration with a silicon thin-film transistor readout
circuit enables multimodal VIS–NIR–SWIR imaging, and
multilayer perceptron–assisted learning further enables high-quality
spectral reconstruction. These results highlight the potential of
this CQD n – p – n architecture for multispectral imaging and compact computational
spectrometer applications.
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ACS Nano
·
2026
·Vol. 20
·期 31
·21975-21983
·
IF 17.3
Li Zhaohui,Dai Chunlong,Li Yi,Wang Fei,Xiang Yuhao,Ding Yu,Xue Tong,Zhang Tong,Ran Lei,Hu Linyu,Xu Maowen
Selenium (Se) is an attractive cathode candidate for
rechargeable
batteries owing to its high theoretical capacity and favorable electronic
conductivity. However, conventional Se batteries relying on alkali
metal-ion charge carriers are plagued by low operating voltages (<2.1
V), sluggish kinetics, and polyselenide shuttling. In this study,
we extend copper-ion-mediated selenium electrochemistry from aqueous
systems to nonaqueous electrolytes by identifying a Cu(ClO 4 ) 2 /carbonate electrolyte that enables reversible Cu-mediated
Se conversion. The copper-ion mediation mechanism produces insoluble
and highly conductive Cu x Se intermediates,
which effectively suppress polyselenide dissolution and shuttling
while enabling rapid reaction kinetics, as reflected by the low polarization
of ∼0.1 V. Moreover, this approach elevates the selenium redox
potential from below −0.5 V to +0.5 V vs SHE, enabling a hybrid
lithium–selenium battery with a 3.5 V discharge voltage, compared
to ∼2.0 V in conventional alkali metal-Se systems. This work
demonstrates the feasibility of implementing Cu-mediated selenium
electrochemistry in nonaqueous media and achieves a high-voltage Se-based
battery.
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