Nano Research
·
2021
·Vol. 15
·期 2
·933-941
·
IF 8.897
Zhen Mengmeng,Jiang Keliang,Guo Sheng-Qi,Shen Boxiong,Liu Huiling
The shuttle effect of lithium polysulfides (LiPSs) in lithium-sulfur batteries (LSBs) has been hampered their commercialization. Metal oxides as separator modifications can suppress the shuttle effect. Since there is no direct electron transport between metal oxides and LiPSs, absorbed LiPSs should be diffused from the surface of metal oxides to the carbon matrix to go through redox reactions. If diffusivity of LiPSs from metal oxides surface to carbon substrate is poor, it would hinder the redox reactions of LiPSs. Nevertheless, researchers tend to focus on the adsorption and overlook the diffusion of LiPSs. Herein, same morphology and different crystal phase of TiO 2 nanosheets grown on carbon nanotubes (CNTs@TiO 2 -bronze and CNTs@TiO 2 -anatase) have been designed via a simple approach. Compared with CNTs and CNTs@TiO 2 -anatase composites, the battery with CNTs@TiO 2 -bronze modified separator delivers higher specific capacities and stronger cycling stability, especially at high current rates (∼ 472 mAh·g −1 at 2.0 C after 1,000 cycles). Adsorption tests, density functional theory calculations and electrochemical performance evaluations indicate that suitable diffusion and adsorption for LiPSs on the CNTs@TiO 2 -B surface can effectively capture LiPSs and promote the redox reaction, leading to the superior cycling performances.
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Nano Research
·
2016
·Vol. 9
·期 6
·1590-1599
·
IF 8.893
Liu Dong,Xie Maolin,Wang Chengming,Liao Lingwen,Qiu Lu,Ma Jun,Huang Hao,Long Ran,Jiang Jun,Xiong Yujie
Formic acid oxidation is an important electrocatalytic reaction in protonexchange membrane (PEM) fuel cells, in which both active sites and species adsorption/activation play key roles. In this study, we have developed hollow Pd-Ag alloy nanostructures with high active surface areas for application to electrocatalytic formic acid oxidation. When a certain amount of Ag is incorporated into a Pd lattice, which is already a highly active material for formic acid oxidation, the electrocatalytic activity can be significantly boosted. As indicated by theoretical simulations, coupling between Pd and Ag induces polarization charges on Pd catalytic sites, which can enhance the adsorption of HCOO* species. As a result, the designed electrocatalysts can achieve reduced Pd usage and enhanced catalytic properties at the same time. This study represents an approach that simultaneously fabricates hollow structures to increase the number of active sites and utilizes interatomic interactions to tune species adsorption/activation towards improved electrocatalytic performance.
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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2015
·Vol. 19
·期 10
·3185-3193
·
IF 2.446
Li Yong-Fang,Lv Jing-Jing,Wang Ai-Jun,Zhang Ming,Wang Rui-Zhi,Feng Jiu-Ju
Shape and size control of gold (Au) nanocrystals plays important roles in their catalytic and optical properties. Hierarchical Au nanodendrites were directly electrodeposited on a glassy carbon electrode (GCE) using l -arginine as a growth-directing agent, while there is no seed, template, or surfactant involved. It was found that the experimental conditions such as the applied potentials, concentrations of HAuCl 4 and l -arginine, and deposition time were essential to the final morphology of the Au deposits. The as-synthesized Au nanocrystals displayed enhanced electrocatalytic activity and improved stability for ethylene glycol (EG) oxidation in acidic media as compared to Au nanoparticles.
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
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2017
·Vol. 129
·期 2
·957-964
·
IF 1.953
Zhai Min,Zhang Shiqi,Sui Jian,Tian Fang,Lan Xiao Zheng
To extend the use of phase change materials (PCMs) of those with good performance, tris(hydroxymethyl)aminomethane (THAM) is embedded in silica gels (SG) (pore diameter, d = 15–100 nm) and in controlled porous glasses (CPG) (nominal d = 12–100 nm). The THAM/SG and THAM/CPG composites are characterized by SEM and XRD. Latent heat storage performance of THAM/SG and THAM/CPG is investigated using differential scanning calorimetry, showing size dependence of phase transition temperature, enthalpy change and supercooling. THAM in the nanopores displays stable transition temperature and heat storage capacity in a short-term thermal cycling. The bulk and the nanosized THAM own the same diffraction patterns. The encapsulation of phase change material in nanoporous media is a promising way of tuning the thermal energy properties of those ideal PCMs for use in a wider range of temperature.
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MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 11
·712
·
IF 5.4
Jin Yuan,Zhang Yanhong,Yao Jinxia,Ma Nanke,Li Guangli
Moxifloxacin (MOX) residues require reliable trace detection. Herein, an electrochemical sensor based on an α‑ZrP/phosphorus‑nitrogen co‑doped hollow carbon spheres (α‑ZrP/PNHC) composite is reported, where PNHC serves as a conductive scaffold to disperse α‑ZrP nanosheets and provide abundant transport pathways. Density functional theory (DFT) computations indicate that phosphorus atoms substitute into the carbon sites at the shoulder position next to pyridinic‑N, thereby injecting electrons into the carbon lattice and gently lowering the Lewis basicity of those pyridinic‑N centers. For the P‑doped pyridinic‑N site, the calculated adsorption energy amounts to − 0.745 eV, representing a moderate and ideal strength for stable enrichment without active site locking. Importantly, XPS data experimentally corroborate these findings, after P‑doping, the fraction of pyridinic‑N rises from 22.94% to 24.40%. This enrichment of pyridinic‑N, together with its moderate adsorption energy and open configuration, provides the ideal balance between stable enrichment and active site accessibility. Owing to these synergistic structural and electronic effects, the α‑ZrP/PNHC/GCE sensor delivers a broad linear detection interval (0.03–10 μM), a low limit of detection (0.023 μM), outstanding selectivity, acceptable reproducibility, and reliable stability. Recovery experiments in tap water and honey give values ranging from 97.29% to 103.70%, verifying the method’s practical utility. This work offers a highly sensitive sensing platform for MOX and provides DFT‑guided insights into the rational design of heteroatom‑doped carbon‑based composites. Graphical abstract
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npj Biofilms and Microbiomes
·
2026
·
IF 11.4
Xia Xiong,Zheng Liangzhen,Zhou Jinjie,Ni Haoran,Zhu Guoliang,Liu Hongbin,Chen Ruiyue,Shi Haimei,Sun Huizeng,Li Meng,Wang Sheng,Dai Lei
Ruminant methane emission has attracted increasing attention due to its significance in global climate change and sustainable livestock production. Methyl-coenzyme M reductase (MCR), the key enzyme involved in the terminal step of methanogenesis in the rumen microbiome, is responsible for nearly all biologically generated methane released into the atmosphere. In this study, we developed an AI-assisted workflow for discovery of novel MCR inhibitors. Ultra-fast virtual screening of ~23 million molecules yielded 26 candidate molecules for experimental validation, among them 4 molecules showed significant inhibition of methane production. Subsequent structure-guided optimization led to the discovery of a nanomolar-range inhibitor P yra z ol-5(4H)- o ne,3-(4- n itrophenyl) (PZON) with an IC 50 of 0.24 μM. PZON inhibited Methanobrevibacter ruminantium M1 growth and methanogenesis in pure cultures, and suppressed methane emissions by 73–98% across rumen microbiomes from four ruminant sources, while exhibiting no detectable cytotoxicity at concentrations exceeding 400-fold its IC 50 . Metatranscriptomic analyses further demonstrated that PZON reduced transcriptional activity of diverse methanogenic lineages and MCR, providing transcriptional evidence of the anti-methanogenic activity of PZON. Overall, our study provides promising candidates for methane-reducing feed additives, and demonstrates the power of AI-assisted discovery of small molecules for targeted modulation of gastrointestinal microbiomes.
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Nature Synthesis
·
2026
·
IF 22.6
Zhang Aiping,Zong Huiyi,Yuan Ruihan,Lu Xiaojuan,Wang Zerui,Wu Congcong,Qian Jin,Wang Kai,Zheng Xiaojia
Halide perovskite synthesis generally uses toxic, high-boiling-point and strongly coordinating organic solvents, hindering scalable processing and crystallographic control in thick-film applications. Water is ideal as a solvent but incompatible with perovskite synthesis due to precursor insolubility and rapid hydrolysis in water. Here we introduce a hydrogel-confined reaction environment that overcomes this incompatibility by decoupling precursor solvation from lattice formation. Within a polymer–water network, PbI 2 and organic iodides are dispersed in a stabilized ionic state that suppresses aggregation and kinetically inhibits water-induced decomposition. Concurrently, this network anchors emerging nuclei and imposes spatial confinement, directing crystal growth into dense thick films. Spectroscopic and computational analysis reveals facet-specific coordination between polymer and perovskite, suppressing surface defect formation and preserving efficient charge transport despite the presence of the polymer matrix. The resultant thick hydrogel-grown films (180 µm) exhibit charge carrier mobilities of ∼10 cm 2 V −1 s −1 . When directly integrated into pixelated X-ray imaging sensors, the device achieves a high sensitivity-to-noise ratio of \(25,000\,\upmu {\text{C}}\,{{\text{Gy}}}_{{\text{air}}}^{-1}\,{{\text{cm}}}^{-2}\,{{\text{pA}}}^{-1}\) , with an ultralow detection limit of 19.8 nGy air s −1 , enabling high-fidelity imaging with negligible signal crosstalk.
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Nature Communications
·
2026
·
IF 18.1
An Xufei,Yang Ke,Chen Likun,Mi Jinshuo,Xiao Guanyou,Cui Wenting,Ma Yuetao,Guo Shaoke,Li Yuhang,Han Zhuo,Shi Peiran,Liu Ming,Li Dan,Kang Feiyu,He Yan-Bing
Solid-state polymer electrolytes hold significant promise for solid-state lithium metal batteries but have been severely plagued by how to simultaneously achieve high ionic conductivity and construct a stable interphase. Here, we propose an electron delocalization engineering strategy by introducing the conducting polymer with the conjugated system into solid-state polymer electrolytes to solve the above issue. The electron delocalization of conducting polymer such as proton-doped polyaniline can generate tremendous “micro-capacitors” to increase dielectric constant, which significantly facilitate the dissociation of Li salts to enhance the Li + transport, meanwhile they can accelerate the bond-cleavage dynamics of anions to form an inorganic-rich interphase. Solid-state polymer electrolytes with proton-doped polyaniline deliver a high ionic conductivity at a wide temperature range (0.892 mS cm −1 at 25 °C and 0.053 mS cm −1 at −40 °C), which enables Li electrode to achieve a large critical deposition areal capacity of 26.3 mAh cm −2 . The Li | |LiNi 0.8 Co 0.1 Mn 0.1 O 2 cells operate effectively over a wide temperature range from −40 °C to 45 °C and exhibit a life span of over 13000 cycles at 1800 mA g −1 , which is highly desired for practical solid-state lithium metal batteries due to the inaccessible design for the current polymer electrolytes.
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Nature Communications
·
2026
·Vol. 17
·期 1
·10819
·
IF 18.1
Liu Ruiming,Ge Xueyang,Zhang Xiaojun,Xu Zijun,Zhang Yanning,Pan Xiaosen,Li Zhenwen,Yang Lihong,Yue Qin
Monitoring and identification of ear electroencephalogram (Ear-EEG) signals offer a promising non-invasive approach for tracking mental states. Compared to rigid metal electrodes, polymer electrodes possess flexibility, good biocompatibility, superior skin adhesion, and wearing comfort, however, their accuracy is often compromised by signal drift due to polymer creep under sustained strain. To address this, we introduce a molecular strategy that suppresses creep by compensating entropy loss through a designed intramolecular dihedral structure. The copolymer integrates two distinct crosslinks: flexible segments stabilized by electrostatic self-coordination, and a minority of rigid segments formed by covalent main-chain bridges. In-situ scattering and theoretical simulations confirm that the covalently bridged TAO segments adopt a rigid dihedral configuration, effectively restraining chain slippage and eradicating viscoelasticity. Concurrently, dynamic disulfide exchange further enhances network stability under deformation. This design yields the near-zero creep polyelectrolyte ionic elastomer, denoted as Poly(TA -co- TAT)-TAO, which demonstrates remarkable stretchability (>200%) and elasticity (hysteresis <7.5%, recovery >99% at 160% strain). Leveraging its persistent creep resistance (<0.4% over 12 hours), the resulting wearable EEG device enables reliable, long-term mental status monitoring in real-world settings.
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JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2026
·
IF 2.6
Wu Mingjie,Zhu Haiyan,Bao Huirong,Feng Xiaomiao
The NiCo-LDH/NiCoP/CC composite electrode material was successfully synthesized on carbon cloth (CC) via a two-step electrodeposition method and subsequently applied in a flexible asymmetric supercapacitor. The electrode material exhibits excellent electrochemical performance, which is mainly attributed to the synergistic effect between NiCo-LDH and NiCoP. The layered structure of NiCo-LDH provides abundant active sites, while the high electrical conductivity of NiCoP effectively enhances the overall conductivity of the electrode. The synergy between the two not only increases the number of active sites for Faradaic reactions but also optimizes the ion transport pathways, thereby significantly improving the electrochemical performance of the electrode. Owing to this synergistic effect, the electrode maintains efficient charge storage and transfer capability at high current densities, and sustains stable electrochemical performance even during rapid charge–discharge processes. Electrochemical test results show that the NiCo-LDH/NiCoP/CC electrode possesses a high specific capacitance (1682.5 mF cm −2 at a current density of 4.0 mA cm −2 ) and good electrochemical stability (83.9% capacitance retention after 8000 cycles at 8.0 mA cm −2 ). Furthermore, the NiCo-LDH/NiCoP/CC||AC/CC device exhibits excellent cycling life (83.4% retention after 8000 cycles at 4.0 mA cm −2 ), as well as outstanding mechanical stability and flexibility, with a capacitance retention of 97.6% at a bending angle of 180° and 96.7% after 200 bending cycles at 90°. These results demonstrate that the electrode material holds great promise for applications in flexible electronic devices and wearable technology.
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Nature Communications
·
2026
·
IF 18.1
Song Huimin,Zhang Ruizhuo,Zheng Chenxi,Münch Konrad,Shen Kaier,Liu Fang,Hong Xufeng,Wang Hong,Meng Jiashen,Yan Yingjing,Shi Weize,He Mengxue,Ma Yue,Li Yitao,Xiao Zhitong,Shafqat Muhammad Burhan,Gao Xin,Wu Jinsong,Luo Mingchuan,Song Tinglu,Ma Chenyan,Zheng Lei,Gao Peng,Safari Mohammadhosein,Wang Yu,Henkel Philip,Janek Jürgen,Brezesinski Torsten,Pang Quanquan
All-solid-state lithium-sulfur batteries promise high specific energy and low cost. However, they are challenged by poor rate capability and cycling stability owing to the slow solid-solid sulfur redox reactions. Here, we present fast-charging and durable all-solid-state lithium-sulfur batteries enabled by a pre-embedded solid-solid redox mediator using an amorphous sulfur/iodine nano-eutectic positive electrode. The iodine, intimately homogenized with sulfur owing to carbon mesopore encapsulation, undergoes rapid I 2 /I − redox reaction, mediating solid-solid sulfur reactions by promoting electron transfer across the boundaries. The iodine within the carbon and on its surface reacts in situ with the sulfide catholyte to form a globally distributed I 2 /I − nano-network throughout the positive electrode, thereby enabling fast charging. The cell exhibits a specific capacity of 851.9 mA h g −1 S/I when charged at 10 C, and 474.7 mA h g −1 S/I at a charging rate of 24 C (1 C is defined as 945 mA g −1 S/I ). The high reversibility of the redox-mediated reaction enables durable cycling for 9,000 cycles over 9 months at 2 C and 2,800 cycles over 17 months at 0.5 C. This strategy represents a perspective for developing solid-state conversion electrodes that are plagued by sluggish reactions.
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JOURNAL OF ELECTRONIC MATERIALS
·
2026
·
IF 2.8
Feng Xiaojun,Pang Dazhi,Yao Mingxuan,Jiang Kunpeng,Zhu Guisheng,Liu Wenping,Zhao Yunyun,Xu Huarui
Safety concerns regarding traditional lithium-ion batteries have garnered widespread attention, and solid-state batteries, with their superior safety and energy density, have emerged as the primary direction for the development of next-generation rechargeable batteries. Among various solid-state electrolytes, PVDF–HFP-based polymer solid-state electrolytes have garnered significant attention owing to their good flexibility, excellent processability, and mechanical strength. However, their low room-temperature ionic conductivity limits their practical application. To address this, this study adopts a composite quasi-solid-state electrolyte approach by introducing nano-BaTiO 3 into the PVDF–HFP-based quasi-solid-state electrolyte system and employs UV light curing technology for rapid fabrication. This approach not only enhances the electrolyte’s ionic conductivity but also strengthens its mechanical strength. Experimental results indicate that the introduced nano-barium titanate may restrict the movement of polymer chains, producing a synergistic effect with the cross-linked network formed by UV curing. This enables the electrolyte to achieve an ionic conductivity of 7.01 × 10 −4 S cm −1 at room temperature. At a current density of 0.2 mA cm −2 , the system can operate stably for 2200 h. At a 0.2 C rate, the battery exhibited a capacity retention of 93.55% after 120 cycles. This study provides a feasible approach for the preparation of safe and highly stable quasi-solid-state electrolytes.
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