Nanomaterials
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2022
·Vol. 12
·期 5
·882
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IF 5.719
Linna Mao,Taisong Pan,Junxiong Guo,Yizhen Ke,Jia Zhu,Huanyu Cheng,Yuan Lin
Strain modulation based on the heterogeneous design of soft substrates is an effective method to improve the sensitivity of stretchable resistive strain sensors. In this study, a novel design for reconfigurable strain modulation in the soft substrate with two-phase liquid cells is proposed. The modulatory strain distribution induced by the reversible phase transition of the liquid metal provides reconfigurable strain sensing capabilities with multiple combinations of operating range and sensitivity. The effectiveness of our strategy is validated by theoretical simulations and experiments on a hybrid carbonous film-based resistive strain sensor. The strain sensor can be gradually switched between a highly sensitive one and a wide-range one by selectively controlling the phases of liquid metal in the cell array with a external heating source. The relative change of sensitivity and operating range reaches a maximum of 59% and 44%, respectively. This reversible heterogeneous design shows great potential to facilitate the fabrication of strain sensors and might play a promising role in the future applications of stretchable strain sensors.Keywords:strain sensor;strain engineering;heterogeneous design;two-phase liquid metal
研究领域:
材料科学
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电子工程
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Zeyi Meng,Jin Zhao,Zhihui Chen,Zhizhen Lv,Wenjie Lv,Guoxin Li,Congshan Guo,Jigui Tang,Jingshu Hui
Flexible aqueous zinc-ion batteries (AZIBs) are considered one of the most attractive flexible devices owing to their high theoretical capacity, low cost, and high security. However, the formation of Zn dendrites and the poor flexibility of the Zn material greatly impede the application of wearable AZIBs. Herein, by transferring graphene onto the surface of polyethylene terephthalate-indium tin oxide (PET-ITO-G), a substrate combining excellent flexibility and dendrite suppression ability was prepared. Meanwhile, a quantitative in situ strain application system was proposed to investigate the electrochemical and morphological characteristics of flexible Zn anode interface. The plating/stripping performance of the Zn|PET-ITO-G flexible device was demonstrated under various strains. Subsequent analysis indicated that the origin of its high stability under static bending strain came from the formation of densely packed Zn (101) upon cycling. In addition, PET-ITO-G could quickly recover to Zn (002) after the strain was relieved. A failure model of strain-modulated Zn deposition was proposed based on the formation of surface cracks and distorted surface current distribution. This work identified the main factors that constrained the long cycling life of a flexible metal anode and provided a feasible approach for a systematic study on the influence of in situ strain on flexible batteries.
研究领域:
材料科学
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电化学
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储能技术
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DOI
PubMed
高影响因子
Communications Physics
·
2019
·Vol. 2
·期 1
·1-7
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IF 0
Bu Kunliang,Zhang Wenhao,Fei Ying,Wu Zongxiu,Zheng Yuan,Gao Jingjing,Luo Xuan,Sun Yu-Ping,Yin Yi
Tuning the electronic properties of a matter is of fundamental interest in scientific research as well as in applications. Recently, the Mott insulator-metal transition has been reported in a pristine layered transition metal dichalcogenide 1 T -TaS \({}_{2}\) , with the transition triggered by an optical excitation, a gate controlled intercalation, or a voltage pulse. However, the sudden insulator-metal transition hinders an exploration of how the transition evolves. Here, we report the strain as a possible new tuning parameter to induce Mott gap collapse in 1 T -TaS \({}_{2}\) . In a strain-rich area, we find a mosaic state with distinct electronic density of states within different domains. In a corrugated surface, we further observe and analyze a smooth evolution from a Mott gap state to a metallic state. Our results shed new lights on the understanding of the insulator-metal transition and promote a controllable strain engineering on the design of switching devices in the future.
研究领域:
凝聚态物理
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材料科学
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DOI
Cell Reports Physical Science
·
2023
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IF 8.9
Yi Wei,Yanan Sun,Yufeng Liu,Jiawen Song,Jingwei Mao,Chunxiang Li,Jing Liu,Zijian Deng,Lujun Pan,Ze Yu,Xichuan Yang,Jijun Zhao
Two-dimensional Ruddlesden-Popper perovskites (2D-RPPs) have emerged as promising candidates for efficient solar cells. However, compositional complexity and their multiphase nature make them particularly susceptible to strain, which can have detrimental effects on their device performance and stability. Here, we focus on cyclohexane methylamine (CMA)-based 2D-RPPs and modulate the strain by substituting iodide with bromide. These mixed-halide 2D-RPPs show excellent optical properties, with mixability and tunable band gap. As the substitution ratio increases, the 2D-RPP framework undergoes a sudden rearrangement in crystal lattice, effectively releasing the strain in lattices. Benefiting from the strain relaxation, the 2D-RPPs exhibit evident improvement in crystallinity, which significantly suppresses recombination in the device and enhances carrier transport across it. Consequently, we achieve an increase of 1.15% in efficiency with the strain-released devices containing (CMA) 2 MA 8 Pb 9 I 26.4 Br 1.6 . This device shows significantly improved stability, retaining 93% of the initial efficiency after exposure to 55%–85% relative humidity (RH) for 120 days.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-13
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IF 17.694
Jiang Minxia,Hu Yingjie,Mao Baoguang,Wang Yixin,Yang Zhen,Meng Tao,Wang Xin,Cao Minhua
Manipulating the reversible redox chemistry of transition metal dichalcogenides for energy storage often faces great challenges as it is difficult to regulate the discharged products directly. Herein we report that tensile-strained MoSe 2 (TS-MoSe 2 ) can act as a host to transfer its strain to corresponding discharged product Mo, thus contributing to the regulation of Gibbs free energy change (Δ G ) and enabling a reversible sodium storage mechanism. The inherited strain results in lattice distortion of Mo, which adjusts the d-band center upshifted closer to the Fermi level to enhance the adsorbability of Na 2 Se, thereby leading to a decreased Δ G of the redox chemistry between Mo/Na 2 Se and MoSe 2 . Ex situ and in situ experiments revealed that, unlike the unstrained MoSe 2 , TS-MoSe 2 shows a highly reversible sodium storage, along with an evidently improved reaction kinetics. This work sheds light on the study on electrochemical energy storage mechanism of other electrode materials.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
Small
·
2023
·Vol. 19
·期 34
·2301640
·
IF 13.3
Fan Zhang,Renjie Ji,Xiaoyang Zhu,Hongke Li,Yating Wang,Jingpeng Wang,Fei Wang,Hongbo Lan
Highly active bifunctional electrocatalysts for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) have always been the key factors to affect the performance of zinc–air batteries. However, integrating the independent reaction sites of ORR and OER in a catalyst remains a major challenge. Herein, a collaborative strategy based on defect induction and doping is proposed to prepare the strain-regulated Pt–NiO@Ni sub-micron particles (Pt–NiO@Ni SP). Benefiting from the synergistic effect of tensile strain and Pt-doped, the metallic Ni-based sub-micron particles with tensile strain as the catalyst carriers can effectively optimize the electronic distribution of atomic structures in Pt and NiO on the surface of particles, leading to reduce the energy barrier of intermediates for ORR and OER. Consequently, the Pt–NiO@Ni SP exhibits outstanding bifunctional catalytic activity with the ΔE index of 0.65 V under a low Pt loading, outperforming that of the benchmark Pt/C+IrO 2 catalysts (0.76 V). Impressively, the Pt–NiO@Ni SP-based liquid zinc–air battery develops a high open-circuit potential (1.47 V), excellent energy density (188.2 mW cm −2 ), and favorable cyclic charge–discharge cycling durability (200 h at 20 mA cm −2 ). This work provides an innovative avenue for the rational construction of highly active bifunctional electrocatalysts for practical applications.
研究领域:
材料科学
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电化学
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能源存储与转换
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DOI
PubMed
高影响因子
CARBON
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2025
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IF 11.6
Yuqin Zeng,Haibo Feng,Ling Ling,Li Li
Hierarchical architectures offer a new framework for enhancing specific damping in composites. However, effectively integrating multiscale damping sources with dynamic excitation remains challenging. Cross-scale damping mechanisms are difficult to control. To address this, this study proposes a multiscale damping design principle centered on the balanced-relative strain factor and normalized strain index. A multiscale design strategy for carbon-fiber-reinforced polymers is developed, successfully achieving ultra-high specific damping performance. The resulting composite exhibits an outstanding loss modulus of 13.2 GPa, exceeding conventional engineering materials. Its tensile yield strength reaches 441.8 MPa, demonstrating suitability for high-strength applications. Simulations are also employed to analyze the damping enhancement mechanism. This work provides a novel strategy for the design and manufacturing of lightweight, high-performance, and multifunctional structural damping composites.
研究领域:
材料科学
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复合材料工程
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结构功能一体化材料
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力学与材料学
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Yan Liu,Liwen Xing,Yaqi Liu,Dianxing Lian,Mohaoyang Chen,Weiwei Zhang,Ke Wu,Hongdan Zhu,Zhiyi Sun,Wenxing Chen,Peng Wu,Dingsheng Wang,Yongjun Ji
The intrinsic activity of single-atom catalysts is influenced by the local electronic structures of metal centers, with existing modulation strategies limited to adjacent atomic coordination. However, the impacts of support surface geometry on local bonding environment, and thus electronic structures of single-atom centers have rarely been known. Here, we prepared highly curved B,N co-doped carbon-supported ruthenium catalyst with an ultra-low Ru loading of 0.4 wt%, which exhibited an ultrahigh turnover frequency (TOF) of 10 H 2 s −1 (38 times that of Pt/C) and superior stability in alkaline hydrogen evolution reaction (HER). We found that curving support surface induced the strain, resulting in 1.5% compressed Ru-N and 4% stretched Ru-B bonds, leading to the accumulation of positive charge and quenching of spin polarization at Ru sites, thereby achieving the optimal binding of H* and enhanced performance for HER. This work highlights the significant support effects upon the structural design of active sites.
研究领域:
催化
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材料科学
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化学
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能源科学
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产品关联
DOI
高影响因子
Nature Photonics
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2025
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IF 32.9
Zhang Jiakang,Yan Wenjian,Li Zhipeng,Jiang Haokun,Peng Cheng,Lan Mengjiao,Sun He,Yang Jinxian,Wang Yanbo,Li Chongwen,Pang Shuping,Zhou Zhongmin
The commercialization of perovskite photovoltaics faces significant hurdles due to device degradation under environmental stressors, such as illumination, humidity and heat, which represents a core challenge for industrial applications. Here we present a conformational engineering strategy targeting the buried interface of perovskite solar cells and based on the structural evolution of additives—from 1,1-diphenylethylene to 1-octyl-2-(1-phenylvinyl)benzene and diethylamino hydroxybenzoyl hexyl benzoate. We decouple the contributions of the additives, including ultraviolet shielding, strain regulation and chemical passivation. In conjunction with in situ characterization, we reveal that dynamic interfacial strain regulation plays a major role in improving device stability during light–dark cycling. Our devices achieve power conversion efficiencies of 26.47% and 22.67%, for active areas of 0.09 cm 2 and 20.5 cm 2 , respectively. Under maximum power point tracking, small-area devices maintain 96.2% of their initial power conversion efficiency after 1,132 h of testing in ISOS-L-1I (continuous illumination) and 88.8% after 348 h in ISOS-LC-1 (12-h day–night cycling). This research establishes an innovative design paradigm for stable and efficient perovskite solar cells through a multifunctional strategy driven by conformational engineering.
研究领域:
光伏技术
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材料科学
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能源材料
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纳米技术
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器件物理
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）