Laser & Photonics Reviews
·
2025
·Vol. 19
·期 22
·e00823
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IF 10
Yuxiang Zhang,Weiqing Tang,Haiyang Liu,Mengyu Liu,Anqi Cheng,Shiming Wu,Ying Ye,Min Liu,Zongnan Zhang,Chunmiao Zhang,Yaping Wu,Xu Li,Zhiming Wu,Junyong Kang
Two-dimensional transition metal dichalcogenides represent a highly attractive platform for the development of valleytronic devices due to their unique spin-valley properties. Herein, a plasma-assisted interfacial engineering is proposed to enhance valley polarization and valley splitting in MoS 2 /AlN heterostructure by modifying the surface configurations of AlN substrates. The experimental results show that after the optimized N 2 -plasma treatment, the AlN surface becomes smoother with a decreased migration barrier, thereby facilitating the growth of high-quality MoS 2 . The valley splitting and degree of valley polarization in the optimal sample reach 7.96 meV (the corresponding Landé g factor is 19.6) and 33.8% at −7 T, which are 16.0- and 1.0-fold higher than those in the untreated MoS 2 /AlN heterostructure, respectively. Theoretical simulations indicate that the enhanced spin-valley properties are predominantly ascribed to the AlN surface magnetism induced by the hybridization of P z and P y orbitals of surface N and O atoms. This work opens a new avenue for manipulating spin-valley properties in 2D materials via interfacial engineering.
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Polymer Chemistry
·
2025
·Vol. 16
·期 42
·4686-4695
·
IF 3.9
Ranran Gao,Qu Wang,Qian Li,Chenchi Hua,Xiaoning Guo,Li Wang,Wantai Yang
Stimuli-responsive aggregation-induced emission (AIE) active polymers hold great promise for a wide range of future applications. In the present work, an efficient post-polymerization modification approach was developed to synthesize AIE-active polymers with commercial poly(ethylene-alt-maleic anhydride) (PEM) as the parent polymer and 2-(4-(1,2,2-triphenylvinyl)phenoxy)ethan-1-amine as a model modification reagent. By performing hydrolysis, amidation, or esterification reactions on the maleic anhydride groups, we obtained four types of tetraphenylethylene-appended PEM derivatives successfully. The PEM derivatives displayed wide range-tunable pH-responsive emission characteristics as well as CO2- and H2O2-responsive photoluminescence depending on the functional side groups introduced. These intriguing results highlight the effectiveness and importance of post-polymerization modification in obtaining highly customizable structures and ‘signaling’ performance in stimuli-responsive AIE-active polymers.
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GREEN CHEMISTRY
·
2025
·Vol. 27
·期 44
·14338-14349
·
IF 9.2
Yuntao Lei,Wenjuan Zhang,Fenglong Sun,Zhongwei Zhao
Lithium (Li) metal, a promising anode material for high-energy-density batteries, necessitates high purity that traditional refining methods struggle to achieve efficiently from low-grade metal/alloy feedstocks. Herein, we propose a fully liquid electrorefining (FLE) approach that integrates a liquid alloy anode, a molten salt electrolyte, and a liquid metal cathode in an electrolyzer. This all-liquid configuration enhances ion/atom transport kinetics and reaction selectivity while addressing issues such as anode passivation and cathode dendrite formation. At 450 °C and approximately 100 mA cm−2, the FLE process successfully extracts Li metal with a purity exceeding 99.90% from both a multicomponent alloy (2.72% Li–96.45% Sn–0.47% Mg–0.36% Ca) and a kilogram-scale alloy (1.68% Li–98.32% Sn). Compared with conventional vacuum distillation, FLE demonstrates superior separation coefficients (βLi/Sn = 5.01 × 105, βLi/Mg = 3.21 × 104, and βLi/Ca = 6.96 × 103) and significantly reduced energy consumption (7.64 kWh kg−1 Li). This novel approach provides a sustainable and scalable pathway for high-purity lithium production, which is critical for advancing clean energy technologies, while minimizing environmental impact.
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Journal of Materials Chemistry A
·
2025
·Vol. 13
·期 44
·37953-37961
·
IF 9.5
Yao Dai,Yubo Luo,Yingchao Wei,Tianshun Xiong,Chengwei Sun,Wenjie Shu,Guanzheng Luo,Linyao Wu,Shuhui Zhang,Qinghui Jiang,Xin Li,Zheng Ma,Yao Luo,Yan Liu,Dan Zhang,Junyou Yang
Inorganic plastic thermoelectric materials have attracted much attention for breaking the brittle bottleneck of traditional inorganic thermoelectric materials. The Ag2(S, Se, Te) system is one of the most novel and promising thermoelectric semiconductors. To enhance its thermoelectric performance, substitution of Na for Ag is adopted to modulate the electrical and thermal transport properties of Ag2S1/3Se1/3Te1/3, through enhancing phonon scattering and effective mass. It enables us to achieve a record high average power factor (PF) of 7.4 μW cm−1 K−2 in the temperature interval of 300–500 K and a room-temperature thermoelectric figure of merit (ZT) of 0.50 and a peak ZT of 0.84 at 500 K in Ag2(S, Se, Te), respectively. In addition, the slip mode of Ag2S1/3Se1/3Te1/3 plastic deformation is also revealed for the first time, in which the crystal slip behavior is dominated by the {112}〈111〉 slip regime, instead of the conventional {110}〈111〉 view. The obtained high thermoelectric performance, as well as the maintained plastic performance, shows broad application prospects in waste heat recovery and wearable devices.
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Particuology
·
2025
·
IF 4.3
Jing Lao,Zihan Mu,Yangcheng Lu
A novel high temperature oxidation precipitation method for synthesizing high-purity nano-sized ferric phosphate was proposed. We systematically investigated the impact of reaction temperature on the properties of the ferric phosphate product and its slurry. The study found that the FePO 4 obtained by the high-temperature precipitation method consisted of amorphous nanoparticles with a narrow size distribution around 30 nm. Increasing the reaction temperature did not affect the purity or crystal structure of the particles, but it reduced the viscosity and solid content of the slurry, beneficial for improving the solid-liquid separation efficiency in subsequent production processes. Characterization of products obtained at different reaction temperatures using FTIR, XPS, and ICP-OES revealed that elevated temperatures decreased the content of hydroxyl groups on the surface of the ferric phosphate particles, weakening the adsorption of metal ion impurities on the particle surface and the interaction between particles. The LiFePO 4 @C material synthesized using the nano FePO 4 product obtained by the high-temperature oxidative precipitation method as a precursor exhibited good rate performance (137.1 mAh g −1 at 5 C). This high-temperature oxidative precipitation method might enable controllable, continuous, and easily scalable production of nano-sized FePO 4 production.
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CERAMICS INTERNATIONAL
·
2025
·Vol. 51
·期 23
·40067-40078
·
IF 5.6
Meng Wang,Ting Wang
BiFeO 3 -BaTiO 3 exhibits a high dielectric constant , excellent ferroelectric properties, and mechanical stability , making it a promising material for energy storage applications . However, unmodified BiFeO 3 -BaTiO 3 ceramics typically exhibit high residual polarization and low breakdown strength , resulting in low energy storage density and efficiency. In this study, (1- x )(0.67BiFeO 3 -0.33BaTiO 3 )- x (Sr 0.7 Nd 0.2 )TiO 3 ceramics were prepared and demonstrated a pseudo-cubic perovskite structure at room temperature. As the x value increased, the long-range ordered ferroelectric structure was disrupted, the relaxation characteristics were enhanced, and the grain size decreased significantly. The maximum polarization strength (P max ) of the composition with x = 0.15 reached 38.57 μC/cm 2 at 180 kV/cm. Under low electric fields, this material achieved an excellent recoverable energy storage density (W rec ) of 2.57 J/cm 3 and a high energy storage efficiency (η) of 79 %, while also exhibiting good frequency stability and charge/discharge performance. These characteristics suggest its potential application as a next-generation electrostatic capacitor material.
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Small Methods
·
2025
·Vol. 9
·期 12
·e01317
·
IF 9.1
De'en Guo,Yi Yang,Qingrui Cai,Bingchen He,Xingyu Gao,Heng Peng,Junhao Xue,Conghua Zhou
Carbon- electrode (CE) based, hole-conductor-free mesoscopic perovskite solar cells (meso-CPSCs) offer the merits of high stability and low cost, but they contain a large number of nanosized perovskite (PVSK) crystallites in the CE region. These crystallites contribute little to light absorption, but bring risks of charge recombination. Herein, a three-step holistic treatment is introduced to address this issue, such as treatment-1 (T1): partial CE peeling; treatment-2 (T2): octylammonium iodide modification; and treatment-3 (T3): coating of a secondary layer of CE. Low-temperature meso-CPSCs are chosen as the model platform to perform the strategy. It is observed that the strategy removes the redundant PVSK crystallites, induces the formation of tilt-stacked two-dimensional (2D) PVSK, and strengthens interfacial contact of PVSK/CE, which reduces the recombination risks and facilitates interfacial charge-extraction, and finally elevates the power conversion efficiency (PCE) of the low-temperature meso-CPSCs from 14.25(±0.69)% to 16.05(±0.40)%(optimized to 17.28%). The efficiency is further upgraded to 18.07% after additional optimization on internal resistance and substrate transparency. Such performance achieves an increment of ≈50% when comparing to the efficiency of ≈12% that was firstly reported in 2020. In more, the T 80 lifetime of ≈525 h has been obtained during the quasi-maximum power point tracking test in open air (device unsealed).
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jiacheng Yan,Yuxin Chen,Tuoya Naren,Zhongshen Wang,Antai Zhu,Shaozheng Huang,Bowei Ju,Gui-Chao Kuang,Libao Chen
Deep eutectic solvent (DES) electrolyte, due to its low volatility, flame retardancy and environmental friendliness, has become one of the next-generation electrolytes for lithium metal batteries (LMBs). However, DES has poor compatibility with lithium metal and there is still a risk of leakage, which limits the use of DES in LMBs. The introduction of polymers into the electrolyte is an effective strategy to solve the leakage problem and improve the compatibility of the interface. Here, we report a polymer formed from nitrogen-rich monomers that polymerize in-situ in the flame-retardant DES (1 mol/L LiTFSI in succinonitrile) to form a gel electrolyte (D-TAEA). D-TAEA maintains high ionic conductivity (0.52 mS cm −1 at 30 °C) while effectively inhibiting electrolyte leakage and optimizing interface stability. Benefiting from the synergistic effect of polyurea and tertiary amine groups, D-TAEA exhibits a wide electrochemical window (5.0 V vs Li/Li + ), high Li + migration number (0.69) and excellent cycle performance. Due to the stable SEI formed by D-TAEA and Li electrode, Li/Li symmetrical battery can stably cycle for 800 h, moreover, the capacity retention rate of LiFePO 4 full battery remains at 92.6 % after 300 cycles at 0.1C. Therefore, this three-dimensional cross-linking network provides a new path for the traditional DES system.
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Surfaces and Interfaces
·
2025
·
IF 6.3
Yusong Zhang,Haoyan Chen,Rihui Yao,Guoping Su,Han He,Jiahao Zheng,Huacheng Tang,Yichun Lu,Honglong Ning,Junbiao Peng
As an ultrawide-bandgap semiconductor, Ga 2 O 3 is highly promising for solar-blind ultraviolet detection. Traditional preparation methods are often complicated and costly. In this study, α-Ga 2 O 3 nanorods were synthesized via a hydrothermal method and employed to construct a photoelectrochemical ultraviolet PD (PEC UV PD). We investigated the influence of hydrothermal parameters on the Ga 2 O 3 thin films. It was observed that extending the hydrothermal reaction time led to an increase in film thickness, whereas elevating the precursor concentration resulted in a reduction in nanorod dimensions. Notably, the introduction of ammonia induced preferential orientation of the nanorods. On the basis of these findings, a Ga 2 O 3 -based PEC PD with a preferential (104) crystal-plane orientation was successfully fabricated, demonstrating excellent solar-blind detection performance. Under 267 nm deep ultraviolet light, it achieved a maximum responsivity (R) of 27.8 mA W⁻¹ and detectivity (D*) of 2.80 × 10¹⁰ Jones, with a solar-blind to near-ultraviolet rejection ratio (R 267nm /R 365nm ) of 11,949. The rise time (τᵣᵢₛₑ) was 36.2 ms, and the delay time (τ delay ) was 20.1 ms. By combining experiments with density functional theory (DFT) calculations, the study indicates the (104) surface facilitates H₂O adsorption, enhancing the oxidation reaction at the PEC PD photoanode-electrolyte interface. This work offers a new approach for developing cost-effective, high-performance solar-blind ultraviolet detectors.
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ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Xinran Zhang,Yali Liu,Dongxiao Wang,Jing Wang,Xiaochen Zhang,Enhui Han,Tu Lan,Bingkun Guo,Shigang Lu,Yingchun Lyu
Lithium-rich layered oxide (LLO) cathode materials with high reversible capacity contributed by both cation and anion redox can significantly improve the energy density of all-solid-state lithium-ion batteries (ASSLIBs). However, LLO exhibit an extremely low electronic conductivity. Meanwhile, the oxidation of lattice oxygen and the related interface reaction led to irreversible lattice oxygen loss, limiting the electrochemical activity and cycle performance. Here, we used Li 2 RuO 3 as the LLO cathode material and Li 3 InCl 6 as the solid electrolyte to study the oxygen redox and the related interface reaction in ASSLIBs at 25 and 45°C. The interaction between indium in the Li 3 InCl 6 and the oxidized O 2- constructs a lattice oxygen stabilizing interface, reducing irreversible lattice oxygen loss. Furthermore, high working temperature activates the redox of oxygen, enabling the ASSLIBs to achieve an initial discharge capacity of 276 mAh g -1 with a coulombic efficiency of 90% and a capacity retention of 72% after 200 cycles.
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Journal of Energy Storage
·
2025
·
IF 9.8
Maolong Xu,Caiyan Shen,Guorong Hu,Yanbing Cao,Zhongdong Peng,Ke Du
As a high voltage cathode material for lithium-ion batteries (LIBs), LiNi 0.5 Mn 1.5 O 4 (LNMO) features a three-dimensional Li + diffusion network that enables fast bulk diffusion. However, at high operating voltages, electrolyte decomposes significantly and form thick cathode electrolyte interface (CEI) film, which slows down Li + transport at the electrode interface and makes it the rate limiting step for Li + extraction and insertion. In this work, low molecular weight lithium polyacrylate (LiPAA) is synthesized by replacing the hydrogen in polyacrylic acid (PAA) with lithium, and used as the binder of LNMO cathode, which can not only create a more uniform coating and conductive network to accelerate interfacial Li + transport, but also protects the electrode and alleviates the interfacial transport limitation of Li + . After 1000 cycles under a 5C high-rate current, the electrode using the LiPAA based binder retained 87.8 % (102.1 mAh/g) of the initial capacity. Even under a 20C super high-rate test, it delivered a discharge capacity of 74.67 mAh/g. This work proves that the rational design of binder is beneficial to electrochemical performance of lithium-ion batteries.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yan Meng,Yuanheng Wang,Qingjiang Liu,Xingyu Chen,Enhui Wang,Weihua Chen,Hongji Pan,Jinghao Zhao,Xin Li,Jia-Yan Liang
Local high concentration electrolytes (LHCEs) have great potential for sodium-ion batteries (SIBs) owing to their anion-enriched solvation structures that facilitate the formation of inorganic-rich solid electrolyte interphases (SEIs). However, insufficient solvent-cation interactions in solvation structure inherently lead to limited ion migration kinetics and compromised electrolyte thermodynamics. Here, we report a novel LHCE design employing methyl 2,2,2-trifluoroethyl ester (FEMC) as a functional diluent. The dipole-dipole interaction between FEMC and ethylene carbonate (EC) induces the electrons polarization of fluorine atoms toward carbonyl group in FEMC, thereby strengthening the coordination ability of FEMC. The solvation structure, maintaining more anion participation, with enhanced FEMC diluent coordination significantly improves ion migration kinetics and derives a stable inorganic-rich (NaF/Na x PO y ) SEI, effectively mitigating cell interfacial concentration polarization. This reconfigured LHCE enables hard carbon (HC) anode to deliver a remarkable specific capacity of 287.00 mAh g −1 with 80.1 % capacity retention over 1000 cycles under 0.1 A g −1 and achieve extraordinary cycling stability over a wide temperature range. This work provides a new insight into designing electrolyte solvation structure via intermolecular dipole-dipole interactions.
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