Journal of Energy Chemistry
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2023
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IF 13.1
Qi Deng,Fangzhong Liu,Xiongwei Wu,Changzhu Li,Weibin Zhou,Bei Long
The development of aqueous battery with dual mechanisms is now arousing more and more interest. The dual mechanisms of Zn 2+ (de)intercalation and I − /I 2 redox bring unexpected effects. Herein, differing from previous studies using ZnI 2 additive, this work designs an aqueous BiI 3 -Zn battery with self-supplied I − . Ex situ tests reveal the conversion of BiI 3 into Bi (discharge) and BiOI (charge) at the 1st cycle and the dissolved I − in electrolyte. The active I − species enhances the specific capacity and discharge medium voltage of electrode as well as improves the generation of Zn dendrite and by-product. Furthermore, the porous hard carbon is introduced to enhance the electronic/ionic conductivity and adsorb iodine species, proven by experimental and theoretical studies. Accordingly, the well-designed BiI 3 -Zn battery delivers a high reversible capacity of 182 mA h g −1 at 0.2 A g −1 , an excellent rate capability with 88 mA h g −1 at 10 A g −1 , and an impressive cyclability with 63% capacity retention over 20 K cycles at 10 A g −1 . An excellent electrochemical performance is obtained even at a high mass loading of 6 mg cm −2 . Moreover, a flexible quasi-solid-state BiI 3 -Zn battery exhibits satisfactory battery performances. This work provides a new idea for designing high-performance aqueous battery with dual mechanisms.
研究领域:
电化学
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能源材料
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储能技术
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无机化学
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纳米材料
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2025
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IF 4.3
Shuyue Xu,Jinchao Ma,Xingyang Cui,Jizhou Dong,Fang Li,Chuan Xiao,Hua Qian
Making solid propellants into porous structures can significantly improve combustion speed and reduce energy density. To balance this contradiction, this work developed a novel dual mechanism additive composed of the energetic compound bis-(1(2)H-tetrazol-5-yl)-amine coordinated with a cobalt atom (BTA-Co). This additive decomposes prior to ammonium perchlorate (AP), undergoing violent swelling that results in a porous material characterized by a well-defined three-dimensional structure, loaded with nano metal oxides. This architecture aims to provides dual-mechanism enhancement effects, which include both physical gas convection provided by organic frames and chemical electron transfer provided by metal oxides. The hypothetico-deductive method was used to corroborate the additive enhancement mechanism from the morphology, composition, and enhancement laws on AP decomposition of the post-combustion products generated in different atmospheres. And direct evidence of the physical and chemical mechanisms was obtained through termination combustion method, TG-MS, and Real-time FTIR testing. The TG-DSC results demonstrated that the addition of 5 wt% BTA-Co significantly reduced the high-temperature decomposition temperature of AP by 116.6 °C and increased the heat release by 10.34-fold. Additionally, the burn rate of AP-Al-HTPB solid composite propellant with 2 wt% BTA-Co increased by 28.87 %. This study provides essential empirical data and theoretical insights for the development of new combustion additives and high-burn-rate AP-based composite solid propellants.
研究领域:
材料科学
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燃烧与推进
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Linghui Wang,Dan Qiu,Yichi Zha,Yanping Zhang,Zhongchun Yuan,Fan Hu,Hongxing Liu,Dan Qiu
With the rapid development of fine chemical industries and electronics manufacturing industries, a large amount of wastewater containing endocrine disrupters, antibiotics, dyes and heavy metal ions have been discharged into the environment, threatening the safety of drinking water. In this work, polyethyleneimine-polyethersulfone (PEI-PES) copolymer was synthesized via the chain exchange reaction, then blended with polyethersulfone (PES) for the fabrication of polyethyleneimine functionalized polyethersulfone (PEI-PES/PES) membranes via phase separation process. The as-prepared membranes can efficiently remove multiple pollutants from water through the dual mechanism of filtration and surface adsorption of the PEI segments. The membranes are hydrophilic and positively charged, therefore they had well perm-selectivity. Especially, the PEI-PES/PES membrane with PEI loading of 30 wt% in polymers (namely M30) exhibited a good monovalent and divalent ion selectivity with a CaCl 2 rejection of 78.0 % and NaCl rejection of 38.3 % at a water flux of 181 L·m −2 ·h −1 , owing to the sieving effect and the Donnan exclusion. In addition, the adsorption kinetics of the as-prepared membranes toward bisphenol A (BPA), tetracycline (Tc), sunset yellow (SY), and copper ion (Cu 2+ ) followed a pseudo-second-order model. The corresponding equilibrium adsorption amount of M30 was 8.9, 7.1, 127.6 and 21.9 mg·g −1 , respectively. The adsorption performance was almost unaffected by salt and well recycled. The prepared PEI-PES/PES membranes demonstrated significant application potential in saline softening and security guarantee of drinking water.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2022
·Vol. 51
·期 31
·11693-11702
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IF 4.569
Hongqi Geng,Zhijuan Li,Quan Liu,Qi Yang,Huimin Jia,Qiang Chen,Aiguo Zhou,Weiwei He
Nanozymes show great promise in bioanalysis and therapeutics, which largely rely on high catalytic efficiency and selectivity. Inspired by the interfacial electronic interaction between noble metals and transition metal carbides, Pt nanozymes are modified with Ti3C2 MXene nanosheets to construct Ti3C2/Pt hybrids with synergistically enhanced catalytic activity. Although Ti3C2 does not have oxidase and peroxidase-like activity, it can greatly selectively enhance the peroxidase-like activity of Pt nanozymes. Near-infrared irradiation can further increase specifically the peroxidase-like activity of Ti3C2/Pt. The optimal peroxidase-like activity of Ti3C2/Pt is 6 times higher than Pt in the dark and 7.9 times higher than Pt under illumination. This catalytic enhancement is attributed to the interplay of the strong interfacial electron effect and unique photothermal effect of Ti3C2. Using the superior peroxidase-like activity of Ti3C2/Pt, dual mechanism colorimetric methods based on cascade reaction and inhibitory effect are developed for specific detection of glucose and glutathione with a limit of detection of 1.0 μM and 0.0089 μM, respectively. Our work provides an effective means to improve the catalytic activity and selectivity of nanozymes by introduction of an ideal supporter, which will be of value for the design of efficient nanozymes.
研究领域:
生物分析
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纳米医学
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产品关联
DOI
PubMed
高影响因子
CHEMISTRY OF MATERIALS
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2023
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IF 8.6
Congcong Wang,Jingjing Zhang,Chenxi Niu,Qian Fu,Lingbin Lu
Ionic hydrogels have important value for applications in bionic skin and flexible sensor fields. However, general ionic hydrogels suffer from inevitable damage and reduction of service life after long-term use. Here, we propose a dual-mechanism-driven strategy with a reversible metal coordination bond and dynamic hydrogen bond to construct a novel fast self-healing ionic hydrogel via a facile “two-step” approach based on environmental-friendly natural resources as raw materials. The dual-mechanism-driven mode endows the hydrogel with excellent self-healing properties (3 h, 95.31%), tensile strength (479.8 kPa), compression strength (5.235 MPa), and fatigue resistance. The hydrogel also showed excellent self-adhesion performance, even underwater, as well as high and stable conductivity (σ = 17.54 mS·cm–1). In addition, it has an ion-responsive deformation feature so that the hydrogel can be shaped and restored in different ion solutions. As a sensor on human skin, the high sensitivity (GF = 2.363) enables it to detect and distinguish various human movements and even different letter pronunciations and pulses. These excellent performances lay a solid foundation for its application in bionic skin and flexible sensor fields.
研究领域:
材料科学
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生物医学工程
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化学工程
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产品关联
DOI
高影响因子
Science Advances
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2024
·Vol. 10
·期 47
·
IF 11.7
Yunjie Mei,Jinli Chen,Qi Wang,Yaqing Guo,Hanwen Liu,Wenhui Shi,Cheng Lin,Yifei Yuan,Yuhua Wang,Bao Yu Xia,Yonggang Yao
It remains a grand challenge to develop electrocatalysts with simultaneously high activity, long durability, and low cost for the oxygen evolution reaction (OER), originating from two competing reaction pathways and often trade-off performances. The adsorbed evolution mechanism (AEM) suffers from sluggish kinetics due to a linear scaling relationship, while the lattice oxygen mechanism (LOM) causes unstable structures due to lattice oxygen escape. We propose a MoZnFeCoNi high-entropy alloy (HEA) incorporating AEM-promoter Mo and LOM-active Zn to achieve dual activation and stabilization for efficient and durable OER. Density functional theory and chemical probe experiments confirmed dual-mechanism activation, with representative Co-Co†-Mo sites facilitating AEM and Zn-O†-Ni sites enhancing LOM, resulting in an ultralow OER overpotential (η10 = 221 mV). The multielement interaction, high-entropy structure, and carbon network notably enhance structural stability for durable catalysis (>1500 hours at 100 mA cm−2). Our work offers a viable approach to concurrently enhance OER activity and stability by designing HEA catalysts to enable dual-mechanism synergy.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Small
·
2025
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IF 12.1
Zhenpeng Cheng,Tianle Wang,Junyan Zhu,Yaqi He,Shijie Liu,Ming-Yu Li,Haifei Lu,Xiaoyan Wen,Jihoon Lee,Sisi Liu,Sui Mao
Adaptive learning capability of optoelectronic synaptic hardware holds promising application prospects in next generation artificial intelligence, and the development of biometric retina perception is sternly hampered by three crucial issues, including well-balance between excitatory and inhibitory, non-volatile multi-state storage, and optimal energy consumption. In this work, a novel Cs 2 AgBiBr 6 /ZnO non-volatile optoelectronic synapse is proposed and successfully programmed with optical excitatory and electronic inhibitory in the light of dual-mechanism: Lead-free perovskite Cs 2 AgBiBr 6 guarantees abundant photogenerated carrier concentration, and the process of carrier capture and release occurs in ZnO layer, which can collaboratively modulate various synaptic plasticity behaviors depending on distinct stimulus. Consequently, multi-bit storage is attained with the dual-mechanism non-volatile memory (DNVM) as a function of consecutive light spikes. The energy consumption of the DNVM is 1.85 nJ at a single light spike, and an ultra-low one of 13.8 fJ is triggered with a single electrical pulse, which approximatively meets the requirement of the biological synaptic event energy consumption. The performance of the DNVM is further evaluated with the Pavlov's classical conditioning experiment and visual hardware system, offering an exciting paradigm for implementing on-chip adaptive visual perception and neuromorphic computing.
研究领域:
材料科学
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神经科学
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人工智能
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2025
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IF 9.8
Guangyue Zhu,Chang Wen,Dapeng Wang,Jiazhen Gu,Hui Kong,Yiwei Lan,Can Ding,Xinyi Wang
Carbon-based materials are pivotal for advancing electrochemical energy storage, yet their practical application in supercapacitors (SCs) and zinc-ion hybrid capacitors (ZIHCs) is hampered by insufficient energy density and severe capacity decay at high rates stemming from the inherent limitations of the double-layer storage mechanism and sluggish ion-transport kinetics, respectively. Herein, we report a dual-mechanism synergistic strategy, realized through the in-situ interfacial engineering of polyaniline (PANI) nanowires onto a sustainable, starch-derived porous carbon substrate. The rationally designed architecture leverages the carbon with high specific surface area (1561.60 m 2 /g) as a stable conductive substrate, while the uniformly grown PANI introduces abundant pseudocapacitive sites. Consequently, the optimized composite exhibits a high specific capacitance (482.8 F/g at 0.5 A/g) and retains 79.73 % capacity at 20 A/g, significantly outperforming the pristine carbon (56.79 %). When deployed as a ZIHC cathode, the device delivers exceptional cycling stability (93.32 % capacity retention after 10,000 cycles at a demanding current density of 10 A/g) and a high energy density of 102.39 Wh/kg. This work presents a facile and effective pathway for the electrode rational design of next-generation energy storage devices requiring concurrent high energy/power density.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2022
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IF 6.14
Jie Xia,Xuepei Wang,Junchang Zhang,Chuiyu Kong,Wentao Huang,Xiaoshuan Zhang
To extend the application range of flexible pressure sensors and to be widely used as an economical and convenient way, researchers have made efforts toward high sensitivity, wide detection range, and low power consumption. However, most sensors can only work based on a single mechanism, thus limiting the sensing range and applicability. In view of this, we developed a dual-mechanism pressure sensor (DMPS) based on Ag nanowire/PDMS electrodes and ZnO nanoparticle-based force-sensitive membranes, which has a sandwich structure and complete flexibility under the effect of chemical bonding. It can simultaneously sense high-frequency dynamic pressure as well as static load by integrating piezoelectric and piezocapacitive effects, thereby complementing the inability of conventional piezoelectric-type sensors to continuously detect static pressure. The prepared flexible DMPS containing 20 wt % ZnO nanofiller has a pressure frequency-independent electrical output of about 2 V under 20 N force conditions and also has a long-term stability of more than 5000 pressure cycles. Moreover, it exhibits good linearity, repeatability, and stability in the 0–100 kPa detection range in the piezocapacitive mode. On the basis of multimechanism and modularity, the flexible DMPS was demonstrated for fruit quality monitoring, including avocado ripeness grading, tactile sensory gloves, and moisture loss assessment, indicating its promising applications in intelligent agricultural machines and wearable sensing systems.
研究领域:
材料科学
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传感器
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农业工程
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可穿戴技术
✓ 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）