Nano Research
·
2024
·
IF 9.5
Su Jihao,Yang Ling,Yu Dengbin,Dong Shaojun
A significant challenge in developing high-performance hybrid supercapacitors (HSCs) is the need to reasonably construct advanced architectures that consist of various components and exhibit superior electrochemical capacitance performance. The FeCoNi-layered double hydroxide (FeCoNi-LDH) porous material has a specific capacitance of 1960 F·g −1 when used as the anode material at 1 A·g −1 . The FeCoNi-LDH material exhibits nanoplates with a distinct spindle morphology on their surface. Due to the combined action of the three metals and abundant oxygen vacancies, they exhibit unique rate performance and cycle stability. The electronic structure of LDH and the regulation of oxygen vacancy were confirmed by density functional theory (DFT) calculations. This suggests that the strength of hydroxide can reduce the energy required for oxygen vacancy formation in FeCoNi-LDH nanosheets and enhance ion and charge transfer, as well as electrolyte adsorption on the electrode surface. The FeCoNi-LDH//activated carbon (AC) HSC has an energy density of 53.2 Wh·kg −1 at a power density of 800 W·kg −1 , surpassing other devices composed of comparable materials during the same timeframe. This study made significant advances in the design and synthesis of a ternary LDH porous structure with distinct oxygen vacancies, as well as its potential application in electrochemical energy storage.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-9
·
IF 15.7
Kong Xi,Yang Letao,Meng Fanqi,Zhang Tao,Zhang Hejin,Lin Yuan-Hua,Huang Houbing,Zhang Shujun,Guo Jinming,Nan Ce-Wen
Ceramic capacitors with ultrahigh power density are crucial in modern electrical applications, especially under high-temperature conditions. However, the relatively low energy density limits their application scope and hinders device miniaturization and integration. In this work, we present a high-entropy BaTiO 3 -based relaxor ceramic with outstanding energy storage properties, achieving a substantial recoverable energy density of 10.9 J/cm 3 and a superior energy efficiency of 93% at applied electric field of 720 kV/cm. Of particular importance is that the studied high-entropy composition exhibits excellent energy storage performance across a wide temperature range of −50 to 260 °C, with variation below 9%, additionally, it demonstrates great cycling reliability at 450 kV/cm and 200 °C up to 10 6 cycles. Electrical and in-situ structural characterizations revealed that the high-entropy engineered local structures are highly stable under varying temperature and electric fields, leading to superior energy storage performance. This study provides a good paradigm of the efficacy of the high-entropy engineering for developing high-performance dielectric capacitors.
研究领域:
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2023
·
IF 11.1
Shaobo Xi,Xiaolan Wei,Jing Ding,Weilong Wang,Jianfeng Lu
Industrial waste salt (IWS) treatment is a significant technology for current environmental protection and resource utilization , and the complex organic pollutants in waste salts seriously hamper the development of cleaner production. In this work, the kinetic mechanism of the organic pollutant removal by pyrolysis is investigated, and the energy storage performance of the recovered products is studied, which provides a new idea for the coupling of waste salt resource treatment and energy storage utilization. Experimental results and pyrolysis kinetic analysis show that high temperature pyrolysis can deeply remove the organic pollutants in IWS, and the total organic carbon (TOC) removal rate can reach more than 99%. The high temperature pyrolysis of waste salt is mainly divided into two stages, and the pyrolysis reaction mainly occurs in the high temperature section (270°C–330 °C) with lower activation energy . The obtained salt containing carbon material exhibits high light absorptance of about 82%, enhanced thermal conductivity of 0.39 W/(m·K) and specific heat of 1.49 J/(g·K), which can be employed as the low-cost and high-performance photothermal absorption and thermal storage material.
研究领域:
环境科学
·
能源材料科学
✓ 已验证
DOI
高影响因子
Cell Reports Physical Science
·
2021
·
IF 0
Lin Qiao,Qing Dai,Huamin Zhang,Xianfeng Li
Summary Turing patterns and reaction-diffusion models are of great significance in biological and chemical fields. However, Turing-shape materials together with their application are rarely investigated, since at present Turing patterns are typically formed by the reaction of small molecules in a viscous system. Herein, a facile route to fabricate membrane materials with macro-scale Turing patterns is proposed. Macromolecules, rather than small molecules, are chosen as reactants to generate chemical Turing patterns, which makes it easy to freeze and construct Turing-shape materials. The formation mechanism and influence factors of Turing patterns are discussed in detail via experimental investigation and numerical simulation. Turing-shape membranes are successfully applied to electrochemical energy storage and exhibit good performance benefiting from the rich surface area.
研究领域:
材料科学
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化学
·
生物学
✓ 已验证
DOI
JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 5
·3613-3628
·
IF 4.682
Guo Zijiao,Li Yue,Lu Zan,Chao Yunfeng,Liu Wei
Abstract As interest in smart textiles grows, fiber-based supercapacitors are gaining attention as promising devices for powering wearable electronics. Herein, we have demonstrated a two-step manufactured hybrid fiber with excellent energy storage properties. Anhydrous MXene (Ti 3 C 2 T x ) sheets are primarily spun in synergy with liquid crystal carbon nanotubes (CNTs) to produce a continuous fiber as a promising electrode material, which solves the problem of poor rate capability owing to the sheet re-stacking of MXene. MnO 2 @MXene/CNT fibers are subsequently prepared by electrochemical deposition with controlled time. The optimal content of MXene (10 wt%) and a perfect thickness of the MnO 2 layer (4 μm) are testified to achieve an excellent capacitance of 371.1 F cm −3 in three-electrode system, which is about 200% and 1800% higher than that of 10 wt%-MXene/CNT and CNT fiber electrode, respectively. Symmetric fiber supercapacitor is assembled by paralleling two fibers with LiCl/PVA gel electrolyte, manifesting a superior cycling stability of 86.3% after 10000 cycles. Graphical Abstract Anhydrous MXene nanosheets and CNTs are incorporated by a high yield spinning technique to prepare continuous hybrid fibers as a conductive framework for MnO2 deposition, exhibiting stable and outstanding energy storage properties in supercapacitor.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Yongchao Liu,Yu Zhong,Huanhuan Liu,Pengyang Lei,Shiyou Liu,Jinhui Wang,Guofa Cai
Electrochromic smart windows offer an energy-saving route and a comfortable indoor environment for buildings due to their dynamic modulation of solar radiation. However, it is still challenging to facilely fabricate electrochromic films with large optical modulation in a wide wavelength band, neutral coloration, and long-term cycling stability. Herein, a type of in situ grown NiCoO2 bimetallic oxide film on fluorine-doped tin oxide (FTO) substrates with an interlaced nanoparticle/nanosheet structure is developed for electrochromism using a facile one-step solvothermal strategy. Owing to its unique structure, the NiCoO2 film delivers a neutral transparent-to-brown tinting, wide-band modulation (54.67% at 550 nm, 34.8% at 900 nm) in the visible-near-infrared region, with fast switching speed (9/8.2 s), and high coloration efficiency (44.5 cm2 C−1 at 550 nm). Moreover, the solvothermal growth approach enables good bonding of the NiCoO2 to the substrates, exhibiting excellent cycling stability of 2500 cycles. Additionally, a model of the smart window with the dual functions of electrochromism and energy storage was assembled using a NiCoO2 film (electrochromic layer) and a reduced graphene oxide (rGO) film (ion storage layer), realizing the visualization of the stored energy level through the color change. It is believed that this work would provide fundamental insights for the exploration of high-performance electrochemical materials and devices.
研究领域:
材料科学
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能源技术
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
Fan Yongbo,Qu Wanbo,Qiu Haifa,Gao Shuaibing,Li Lu,Lin Zezhou,Yang Yuxuan,Yu Junyi,Wang Lin,Luan Saiwei,Li Hao,Lei Lin,Zhang Yang,Fan Huiqing,Wu Haijun,Yu Shuhui,Huang Haitao
Electrostatic capacitors are critical components in the power system of electric vehicles (EVs). The current commercially available solutions are largely based on ferroelectric oxides of which the permittivity decrease with increasing electric field. Here, we propose a high entropy modulation design in a quantum paraelectric-ferroelectric/antiferroelectric matrix, which enables a stable and field-independent energy charge/discharge response across a wide voltage range. By effectively synergizing the high efficiency (η) of quantum paraelectrics and the high polarization of the ferroelectric/anti-ferroelectric matrix with the entropy regulator, a high recoverable energy density (W rec ) of 13.3 J cm − 3 with an η of 92.4% is achieved in the bulk state of the perovskite material, promising for device scale-up. Versatile polar regions as well as a defect-less microstructure is achieved by the optimized compositional design and material processing. On a mesoscopic level, the electrical microstructure of the material is engineered to provide a large breakdown strength ( E b ) of 750 kV/cm, which is confirmed by the resolved electrochemical information and finite-element simulation. The proposed strategy provides a new path for designing high performance next generation energy storage/power converting dielectrics. This demonstration of quantum paraelectrics for energy storage application is expected to stimulate extensive efforts in the area.
研究领域:
材料科学
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能源技术
·
物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Lijia Jia,Liying Zhang,Zhenghan Cai,Feng Zhu,Biao Huang,Qilin Lu
Integrating superior flexibility, conductivity, energy harvesting and broad working temperatures into cellulose hydrogel for deformable energy storage and self-powered sensors has become urgent. Herein, an ultra-flexible anti-freezing conductive versatile hydrogel is developed via synchronously regulating polyvinyl alcohol (PVA) with cellulose nanocrystals (CNCs) and covalent organic frameworks (COFs) to form a multiple hydrogen-bonded ordered network under phytic acid (PA) crosslinking synergy. Introducing COFs into hydrogel network provides continuous protons transport channel while PA generates protons and permanently secures the hierarchical structure of hydrogel, and thus endowing the hydrogel with exceptional proton conductivity (2.46 S/m), ultra-flexibility (tensile strain of 725 %), and outstanding antifreeze conductivity (withstand −40 °C). With these attributes, the hydrogel assembled supercapacitor exhibits stable energy storage capacity (84.7 mF/cm²) and bending resilience (endure bending angles of 180°), whereas the hydrogel-based triboelectric nanogenerator (TENG) presents excellent electrical output performance. Moreover, the designed hydrogel strain sensor demonstrates high sensing sensitivity, enabling stable monitoring of various joint movements and subtle facial expressions. Overall, this study presents a promising approach for designing biomass-based versatile hydrogels with outstanding mechanical performance and energy harvesting and storage functionality for emerging applications in self-powered flexible sensors.
研究领域:
材料科学
·
能源技术
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2025
·Vol. 17
·期 11
·1486
·
IF 4.9
Tingwei Mei,Mingtao Zhu,Hongjian Zhang,Yong Zhang
In recent years, dielectric films with a high energy-storage capacity have attracted significant attention due to their wide applications in the fields of renewable energy, electronic devices, and power systems. Their fundamental principle relies on the polarization and depolarization processes of dielectric materials under external electric fields to store and release electrical energy, featuring a high power density and high charge–discharge efficiency. In this study, sodium bismuth titanate (NBT) micro-flakes synthesized via a molten salt method were treated with hydrogen peroxide and subsequently blended with a polyvinylidene fluoride (PVDF) matrix. An oriented tape-casting process was utilized to fabricate a dielectric thin film with enhanced energy storage capacity under a weakened electric field. Experimental results demonstrated that the introduction of modified NBT micro-flakes facilitated the interfacial interactions between the ceramic fillers and polymer matrix. Additionally, chemical interactions between surface hydroxyl groups and fluorine atoms within PVDF promoted the phase transition from the α to the β phase. Consequently, the energy storage density of PVDF-NBT composite increased from 2.8 J cm−3to 6.1 J cm−3, representing a 110% enhancement. This design strategy provides novel insights for material innovation and interfacial engineering, showcasing promising potential for next-generation power systems.
研究领域:
能源材料
·
高分子材料
·
电子器件
·
电力系统
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Chengwen Bin,Xu Hou,Zeqing Yu,Luocheng Liao,Han Yang,Yunya Liu,Jie Wang
Flexible ferroelectric films with high polarization hold great promise for energy storage and electrocaloric (EC) refrigeration. Herein, we fabricate a lead-free Mn-modified 0.75 Bi(Mg0.5Ti0.5)O3–0.25 BaTiO3 (BMT–BTO) thin film based on a flexible mica substrate. Excellent EC performance with maximum adiabatic temperature change (ΔT ∼23.5 K) and isothermal entropy change (ΔS ∼33.1 J K–1 kg–1) is achieved in the flexible BMT–BTO film, which is attributed to the local structural transition and lattice disorder near 90 °C. Meanwhile, a good energy storage density of ∼70.6 J cm–3 and a quite high efficiency of ∼82% are realized in the same ferroelectric film, accompanied by excellent stability of frequency and electric fatigue (500–10 kHz and 108 cycles). Furthermore, there is no apparent variation in performance under different bending strains. These prominent properties indicate that the multifunctional BMT–BTO ferroelectric film is a promising candidate for applications of flexible energy storage and EC refrigeration.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Chengwen Bin,Xu Hou,Han Yang,Luocheng Liao,Yadan Xie,Hua Wei,Yunya Liu,Xumin Chen,Jie Wang
Flexible dielectric film capacitors with high performance of energy storage has shown great promise as a solution to the flexibility and stability of modern electronics and electric power systems. Herein, a novel relaxor-ferroelectric BiMg 0.5 Ti 0.5 O 3 - x SrTiO 3 (BMT- x STO, x = 0.1, 0.2, 0.3 and 0.4) thin film capacitors are obtained via one-step fabrication on flexible mica substrates. A superior energy storage density of 109.7 J cm −3 and a pretty high efficiency of 80.6% are simultaneously achieved in the BMT-0.3STO film capacitor. At the same time, the energy storage performance can be stable in the temperature range of 25 to 200° C, the wide frequency range of 500 Hz to 10 kHz, and even after 10 8 electrical cycles. In addition, under the bending radii from 16 mm to 4 mm, there is no obvious variation in performance even after 10 4 mechanical fatigue cycles, indicating the super flexibility and stability of the film capacitors. The prominent properties of the BMT-based film capacitor are mainly attributed to the improvement of relaxation behavior by introducing appropriate STO, which are explained by the domain evolution via piezo-response force microscopy and phase field simulation. The present work suggests a new way to obtain lead-free and flexible dielectric film capacitors for flexible energy storage technology.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Jianghua Wu,Faisal Faiz,Mashkoor Ahmad,Miao Zhengjie,Zha Qiang,Wei Xu,Xiaojin Zhao,Xiaofang Pan,Yasir Faiz
The fabrication of supercapacitors with outstanding performance is presented with a distinct defect-rich nanostructures. A one-pot, energy-efficient method for synthesizing defective manganese dioxide nanowires doped with potassium (K 0.35 MnO 2 ) was developed. The introduction of potassium ions at 35 % birnessite resulted in a significant increase in lattice defects and an improvement in conductivity. Addition of KOH induces a phase transition from α-MnO 2 to δ-MnO 2 . These imperfections result in a greater quantity of active sites, which are crucial for the process of energy storage. The K 0.35 MnO 2 structure demonstrates a 405F/g increased capacity at a current density of 1 A/g. The asymmetric supercapacitor (K 0.35 MnO 2 /AC) that was manufactured exhibits a capacitance of 106.4F/g when operating at 1 A/g, while maintaining a maximum energy density of 71.5 Wh kg −1 and a power density of 672 W kg −1 . Furthermore, 92.7 % of the initial capacitance of the device is retained even after 8,000 cycles at 20 A/g. This study presents novel insights into the production of defective materials for energy storage applications through the utilization of a one-pot process as opposed to the multi-step method. In order to produce high-performance supercapacitors for practical applications, the results indicate that defect engineering is a crucial factor.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）