Journal of Materials Chemistry A
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2021
·Vol. 9
·期 12
·7791-7806
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IF 12.732
Yunping Wu,Wei Wei,Tianyi Ding,Sheng Chen,Rui Zhai,Caihe Bai
Two-dimensional (2D) heterostructures combine the advantageous features of different 2D materials and represent advanced electrode architectures for the development of efficient energy storage devices. However, common 2D heterostructures made by stacking different 2D sheets in van der Waals (vdW) contact impose obvious limitations in light of the energy storage performance. Here, we shed light on how heterointerface conditions exert a great influence on the electrochemical properties of the heterostructured electrode and provide an example to modulate the interface contact mode via sandwiching unique g-C3N4 mesh (m-g-C3N4). We find that such m-g-C3N4 bonded heterointerfaces can greatly increase the electrochemical activity, redox conversion kinetics and structural integrity of the constituent component (NiS2), manifesting excellent electrochemical performance with respect to vdW heterostructures. Experimental characterization along with theoretical simulations demonstrates that the synergistic effects of the mesh-bonded interfacial contact and plenty of in-between porous channels contribute to superior electrochemical performance. This study directs attention to elaborate interface engineering toward high-performance energy storage and paves the way for designing and manufacturing of advanced heterostructured electrodes for supercapacitors, batteries and other hybrid devices.
研究领域:
材料科学
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能源存储技术
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2018
·Vol. 22
·期 8
·2579-2586
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IF 2.509
He Xiaoli,Li Xiaomin,Bi Zhijie,Chen Yongbo,Xu Xiaoke,Gao Xiangdong
In this paper, high-performance dual-functional electrodes based on tungsten trioxide (WO 3 ) nanostructures are developed, which successfully realize the combination of electrochromism and energy storage. The WO 3 nanostructures with various morphologies (nanospindles, nanopetals, nanosheets, and nanobricks) were prepared via a facile hydrothermal process. It has been found that the WO 3 nanosheets possess large surface area and porous architecture, significantly increasing the amount of active sites and facilitating the transport of Li + ions. As dual-functional electrode, WO 3 nanosheets present enhanced electrochemical properties including wide optical modulation (64.5%), fast switching time (6.6/3.8 s), great coloration efficiency (48.9 cm 2 C −1 ), and high areal capacitance (14.9 mF cm −2 ). Furthermore, the WO 3 nanosheets could bridge electrochromic behaviors with energy storage by changing color during the charge/discharge processes. The results demonstrate great potential of WO 3 nanosheets for electrochromism and energy storage applications.
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研究领域:
材料科学
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纳米技术
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2019
·Vol. 49
·期 2
·1043-1050
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IF 1.676
Jiao Yunpeng,Han Yinghui,Pang Yiheng,Zhou Junxiu,Qi Xiaohan,Liu Yunpeng
Abstract Some kinds of the plate-like hexagonal layered double complex hydroxides (named Ni-Fe-Sr-LDHs) materials were prepared for energy storage electrodes in this work. It showed good properties with energy densities and cycle life through the electrochemical tests. At 1 A g −1 current density, the specific capacitance of the electrode reached 311.02 F g −1 when the electrolyte was 6 M LiOH. In the long cycle test, the capacitance retention of the electrode maintained at 73.16% after 2000 cycles (current density: 1 A g −1 ). The morphologies of Ni-Fe-Sr-LDHs were characterized via the scanning electron microscope, transmission electron microscopy and x-ray powder diffraction. The prepared layered double hydroxides were further optimized by doping carbon nanotubes (CNTs). The optimal weight ratio of Ni-Fe-Sr-LDHs to CNTs was 3:1. The specific capacitance in the measurement of galvanostatic charge–discharge increased to 438.74 F g −1 , and the stability of long-term cycling was raised to 77.45%. These results indicated that Ni-Fe-Sr-LDHs combined with CNTs would be an ideal electrode material for practical energy storage. Graphic Abstract
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2022
·
IF 9.224
Qiong Wu,Lu Wang,Yan Yan,Shuang Li,Shitao Yu,Jingguo Wang,Lang Huang
Carbon dots with fluorescence from blue to green have been prepared by a microwave-assisted hydrothermal reaction of a chitosan and sodium hydroxide solution. The carbon dots are conjugated graphite nuclei with developed groups on the surface. OH– acts as an activation agent to induce changes in carbon nuclei and surface properties, leading to a high percentage of C═O, C–N═C, and C═C groups on carbon dots, which are crucial for n−π* and π–π* transitions that contribute to emission at a long wavelength. Na+ is helpful in conquering quenching and favorable for the enhanced emission. When it is embedded into a matrix of PVA and boric acid, the composite exhibits obvious room-temperature property phenomena (RTP) that can be easily recognized by the naked eye for up to 12 s with a lifetime of up to 623 ms. The N and O atoms favor the facilitation of intersystem crossing (ISC) to effectively populate triplet excitons, which contributes to the RTP with a low energy gap. The carbon dots can also act as electron donors and enable a 184% capacitance increase in graphene oxide. The prepared carbon dots exhibit potential applications in the security, sensing, and energy storage fields.
研究领域:
材料科学
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化学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Nano
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2022
·
IF 13.364
J. Xu,Y. Jiang,X. Chen,Z. Tang,Y. Gao,M. Huang,Y. Wan,P. Cheng,G. Wang
Phase change material (PCM) as latent heat storage unit shows great potential in various scenes, including solar energy storage system and magnetically induced energy conversion and storage . But insufficient optical activity and electromagnetic response capability seriously hinder its wider applications. Herein, we reported an advanced high-performance photo- and magneto-driven composite phase change material (CPCM), where metal-organic framework (MOF) derived magnetic highly graphitized carbon (MGC) served as a fast-charging photo- and magneto-responsive supporting skeleton, and octadecanol (ODA) acted as a latent heat storage unit. In graphitic structure, there were numerous sp 2 carbon atoms and π electrons . Under solar irradiation, heat is quickly discharged by lattice vibration resulting from π-π∗ transition and subsequent electron-phonon coupling in highly graphitized carbon. Moreover, in situ anchored magnetic cobalt nanoparticles contribute to another exothermic effect triggered by light and alternative magnetic field owing to its surface plasmon resonance (SPR) and eddy current effect, respectively. Additionally, cobalt nanoparticles can also serve as the heterogenous nucleation sites to promote the crystallinity of ODA molecules, thus profiting the increase of phase change enthalpy. Therefore, our developed cobalt-decorated highly graphitized carbon based photo- and magneto-responsive CPCM synergistically reached an enhanced photothermal efficiency of 88.1%, thermal energy storage capacity of 131.14 J/g, and excellent thermal cycling stability and reliability after undergoing multiple charging-discharging cycles, showing great potential in latent heat storage, solar and magnetic energy harvesting .
研究领域:
材料科学
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能源工程
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2022
·
IF 7.305
Yan Zhou,Xiaojian Wang,Dekun Sheng,Xiangdong Liu,Yuming Yang
Light-driven PEG/Ti 3 C 2 T x form-stable phase change films for energy storage crosslinked by Co 2+ were prepared through facile solution mixing. It is the strong interactions among PEG , Ti 3 C 2 T x and Co 2+ that endowed the system with excellent form-stability with only 5.0 wt% supporting. And the latent heat of samples was 142.1 J/g with light-thermal conversion and storage efficiency higher than 86.9%. Meanwhile, the samples possessed improved thermal stability and favorable thermal reliability. The fabricated films with comprehensive properties shows great perspective to be used in energy storage devices.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2021
·
IF 4.527
Jitong Wang,Xinru Nie,Zhanhui Peng,Xiaoping Lei,Pengfei Liang,Zupei Yang,Xiaolian Chao
Lead-free antiferroelectric (AFE) NaNbO 3 (NN) is one of promising materials for dielectric capacitors, but the recoverable energy-storage density and efficiency get restrained owing to huge remanent polarization and limited dielectric breakdown field strength . In this work, a variety of NN based lead-free bulk (1- x )NaNbO 3 - x La(Mn 0.5 Ni 0.5 )O 3 (abbreviated as (1- x )NN- x LMN, x = 0, 0.05, 0.10, 0.15, 0.20) ceramics were designed using a solid-state synthesis method. Remarkably, an ultra-fast charge-discharge speed 47 ns and an acceptable recoverable energy-storage density W rec ~1.77 J/cm 3 with a high efficiency η = 77% were obtained under the E b of 200 kV/cm at x = 0.05. The superior energy storage performance is attributed to the regulation of domain size and voltage resistance by special ions substitution of A and B sites. This work not only proposes an efficient strategy to realize high recoverable energy-storage density and efficiency, but also provide an candidate material for application of advanced pulsed power capacitors.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2023
·Vol. 28
·期 6
·2634
·
IF 4.6
Xiaoshu Qu,Lili Zhou,Zefeng Liu,Zeyu Wang,Jilong Wang,Xiaoyang Yu,Hua Jin,Yanyan Yang
The key challenge in the practical application of electrochromic energy storage devices (EESDs) is the fabrication of high-performance electrode materials. Herein, we deposited K7[La(H2O)x(α2-P2W17O61)] (P2W17La) onto TiO2nanowires (NW) to construct an NW–P2W17La nanocomposite using a layer-by-layer self-assembly method. In contrast to the pure P2W17La films, the nanocomposite exhibits enhanced electrochromic and electrochemical performance owing to the 3D sea-cucumber-like microstructure. An EESD using the NW–P2W17La film as the cathode exhibited outstanding electrochromic and energy storage properties, with high optical modulation (48.6% at 605 nm), high switching speeds (tcoloring= 15 s, tbleaching= 4 s), and high area capacitance (5.72 mF cm−2at 0.15 mA cm−2). The device can reversibly switch between transparent and dark blue during the charge/discharge process, indicating that electrochromic contrast can be used as a quantitative indicator of the energy storage status.Keywords:electrochromism;energy storage;polyoxometalate;nanostructures;EESD
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
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2021
·
IF 3.764
Wei Chen,Yumiao Lu,Yanlei Wang,Feng Huo,Wei-Lu Ding,Li Wei,Hongyan He
The ability to tune structures and properties of interfacial ionic liquids (ILs) using electric fields lies at the heart of modern energy storage technologies, particularly for supercapacitors with ILs as electrolytes. Direct observation of the underlying structural change caused by charge injection is vitally important, but the data are extremely scarce. Here, we propose a general protocol to explore the dynamic structural response of interfacial ILs subjected to charge injection. The experimental results have revealed asymmetric structural evolution of interfacial ILs with a common feature of enhanced mobility during charge injection. Consequently, the surface ILs diffuse and agglomerate into various patterns, which depend critically on both the charge injection mode and initial structural feature. Slow and mild charge injection is advantageous in maintaining structural stability as well as regulating dielectric constants of interfacial ILs. Finally, we unveil the underlying energy conversion from electric energy to thermal energy that governs the structural evolution trend. Our current findings manifest a universal strategy for structural regulation of interfacial ILs via electric fields and open up opportunities for greatly accelerating charging efficiency of supercapacitors for energy storage and harvesting.
研究领域:
材料科学
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电化学
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能量存储
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Xiaohui Sun,Dong Wang,Wei Wu,Xueying Zhao,Xuyang Zhang,Bo Wang,Xianhui Rong,Guohua Wu,Xiangwei Wang
The dual-band electrochromic smart windows (DESW) can selectively modulate visible (VIS) and near-infrared (NIR) transmittance, which is expected to effectively reduce building energy consumption. However, the complex preparation of dual-band electrochromic materials has restricted the further development of DESW. In this work, amorphous and crystalline Ti-doped WO3·2H2O (TiWH) were synthesized by a simple precipitation method, which does not require strict control of the oxygen content and temperature. Ti doping reduced the crystallinity of WO3·2H2O and increased the specific surface area. 3% TiWH films exhibited excellent dual-band electrochromism with high transmittance modulation (633 nm: 83.8%, 1050 nm: 72.5%), fast response time (bleached/colored time: 14.9/15.3 s at 633 nm, 16.0/3.5 s at 1050 nm), good coloration efficiency (633 nm: 22.8 cm2 C–1, 1050 nm: 90.8 cm2 C–1), and high capacitance of 47.1 mF cm–2 at 0.1 mA cm–2. The electrochromic device can still maintain good dual-band electrochromism (bright, cool, and dark modes). The excellent dual-band electrochromism and energy storage make TiWH have a good application prospect in green buildings.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2024
·
IF 8.3
Haiyan Yang,Feng Bao,Shengnan Chen,Sisi Liu,Huihu Huang,Lanqing Wang,Huichao Liu,Jiali Yu,Caizhen Zhu,Jian Xu
As a novel approach to pursue high-performance multifunctional materials, the structural design of cutting-edge two-dimensional (2D) materials has ignited substantial interests. Borophene, an emerging member in the realm of 2D materials, exhibits crucial attributes, including high theoretical carrier density, electrical conductivity, magnetism, and high aspect ratio, rendering it highly promising for diverse applications. Yet, the exploration of porous structural configurations of borophene remains untapped. Addressing this gap, our study focuses on the fabrication of a multifunctional borophene hybrid foam (CMB-foam). This hybridization leverages the exceptional multifunctionality of MXene alongside borophene within a three-dimensional porous framework, facilitating reflection and absorption of electromagnetic waves, thereby demonstrating remarkable electromagnetic interference (EMI) shielding capabilities. Moreover, this structural configuration exposes an enlarged surface area, thus shortening the transport pathway for electrolyte ions, leading to an excellent energy storage performance. Additionally, CMB-foam performs well in thermal management and thermal insulation. These findings underscore the potential of borophene-based materials in multifunctional applications and offer valuable insights into further performance explorations in this domain.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2025
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IF 7.9
Imtiaz Haider,Haoming Xu,Syed Ali Haider,Wenli Li,Yuhua Zheng,Serge Zhuiykov,Yanbin Cui
Transition metal oxides and hydroxides have become highly required for their electrochromic properties and energy storage capabilities owing to their affordability, adaptable structure and exceptional endurance. However, they encounter notable obstacles in achieving substantial advancements in large-scale optical modulation and high coloring efficiency, mostly stemming from their limited electron conductivity and an inadequate number of reactive sites. Current study presents simple and scalable electrodeposition method for phosphomolybdate-nickel (NiHPMo 12 O 40 , PMo 12 -Ni) nanofilms with high purity and small nano-grain sizes ensuring efficient electrochemical and electrochromic performance. Specifically, the PMo 12 -Ni nanofilm has demonstrated superior transmittance (96.5 %), huge optical modulation (87.3 %), substantial increased coloration efficiency (114 cm 2 C −1 ) and stable optical memory with the decay of only 5.1 % up to 5000 s among other transition metal oxides reported to date. The PMo 12 -Ni nanofilm also exhibits excellent energy storage characteristics with high specific capacitance of 60.1 mF cm −2 at current density of 1.5 mA cm −2 . Consequently, the PMo 12 -Ni nanofilms can be consider as valuable candidates for modern electrochromic and energy storage applications.
研究领域:
材料科学
·
电化学
✓ 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）