Nano-Micro Letters
·
2019
·Vol. 11
·期 1
·1-12
·
IF 9.043
Wang Siliang,Wang Qiang,Zeng Wei,Wang Min,Ruan Limin,Ma Yanan
Restricted by their energy storage mechanism, current energy storage devices have certain drawbacks, such as low power density for batteries and low energy density for supercapacitors. Fortunately, the nearest ion capacitors, such as lithium-ion and sodium-ion capacitors containing battery-type and capacitor-type electrodes, may allow achieving both high energy and power densities. For the inspiration, a new zinc-ion capacitor (ZIC) has been designed and realized by assembling the free-standing manganese dioxide–carbon nanotubes (MnO 2 –CNTs) battery-type cathode and MXene (Ti 3 C 2 T x ) capacitor-type anode in an aqueous electrolyte. The ZIC can avoid the insecurity issues that frequently occurred in lithium-ion and sodium-ion capacitors in organic electrolytes. As expected, the ZIC in an aqueous liquid electrolyte exhibits excellent electrochemical performance (based on the total weight of cathode and anode), such as a high specific capacitance of 115.1 F g −1 (1 mV s −1 ), high energy density of 98.6 Wh kg −1 (77.5 W kg −1 ), high power density of 2480.6 W kg −1 (29.7 Wh kg −1 ), and high capacitance retention of ~ 83.6% of its initial capacitance (15,000 cycles). Even in an aqueous gel electrolyte, the ZIC also exhibits excellent performance. This work provides an essential strategy for designing next-generation high-performance energy storage devices.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Huang Zhongliang,Hu Shengnan,Sun Mingzi,Xu Yong,Liu Shangheng,Ren Renjie,Zhuang Lin,Chan Ting-Shan,Hu Zhiwei,Ding Tianyi,Zhou Jing,Liu Liangbin,Wang Mingmin,Huang Yu-Cheng,Tian Na,Bu Lingzheng,Huang Bolong,Huang Xiaoqing
Bimetallic PtRu are promising electrocatalysts for hydrogen oxidation reaction in anion exchange membrane fuel cell, where the activity and stability are still unsatisfying. Here, PtRu nanowires were implanted with a series of oxophilic metal atoms (named as i-M-PR), significantly enhancing alkaline hydrogen oxidation reaction (HOR) activity and stability. With the dual doping of In and Zn atoms, the i-ZnIn-PR/C shows mass activity of 10.2 A mg Pt+Ru −1 at 50 mV, largely surpassing that of commercial Pt/C (0.27 A mg Pt −1 ) and PtRu/C (1.24 A mg Pt+Ru −1 ). More importantly, the peak power density and specific power density are as high as 1.84 W cm −2 and 18.4 W mg Pt+Ru −1 with a low loading (0.1 mg cm −2 ) anion exchange membrane fuel cell. Advanced experimental characterizations and theoretical calculations collectively suggest that dual doping with In and Zn atoms optimizes the binding strengths of intermediates and promotes CO oxidation, enhancing the HOR performances. This work deepens the understanding of developing novel alloy catalysts, which will attract immediate interest in materials, chemistry, energy and beyond.
研究领域:
材料科学
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化学
·
能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Bin He,Wuwei Feng,Meitang Liu,Jigong Hao,Hong Zheng,Yuqin Liu,Shuo Liu,Cheng Hu,He Qi
Herein, NaTaO 3 (NT) is introduced into 0.7Bi 0.5 Na 0.5 TiO 3 -0.3 Sr 0.7 La 0.2 TiO 3 (BNSLT) ceramic to increase the content of the highly stable P4bm phase, constructing a temperature-insensitive phase structure and permittivity over a wide temperature range (25–300 °C); thus, excellent thermal stability ( W rec = 4.68 ± 0.50 J/cm 3 , η = 89.0 ± 2.1%) over an ultra-wide temperature range (20–240 °C) is realized, superior to most lead-free ceramics. The co-substitution of heterovalent ions at both A and B sites in BNSLT leads to enhanced relaxor state and bandgap, delayed saturation polarization, reduced grain size and permittivity. Thereby, an excellent recoverable energy storage density ( W rec = 8.55 J/cm 3 ), high efficiency ( η = 89.5%), and extremely high power density ( P D = 320 MW/cm 3 at 280 kV/cm) are obtained in BNSLT-8%NT ceramics. This work offers a new paradigm for the development of ceramic capacitors with both excellent comprehensive energy storage performance and high-temperature working stability.
研究领域:
材料科学
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电子工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2018
·
IF 6.945
Chunhai Jiang,Jing Zhao,Huiqing Wu,Zhimin Zou,Renzhong Huang
Hybrid anodes with Li 4 Ti 5 O 12 nanoparticles uniformly embedding in a mesoporous activated carbon matrix are prepared by CO 2 activation of copolymerized resorcinol and hexamethylenetetramine loaded by lithium acetate and tetrabutyl titanate . The Li 4 Ti 5 O 12 /activated-carbon hybrid anodes show increased capacity retention as the activated carbon content in the composite increases, although their overall specific capacity decreases gradually. The hybrid anode with an activated-carbon content of 54 wt% exhibits the highest capacity retention of 67% at 4 A g −1 referencing to that at 0.1 A g −1 . When coupling it with commercial AC cathode, the Li-ion capacitor displays an outstanding high energy density of 38 Wh kg −1 even at a high power density of 7964 W kg −1 . Moreover, an energy density retention of 90.8% after 2000 cycles at 1 A g −1 is preserved, demonstrating its very stable cycle performance. The results reported in this work indicate that the Li 4 Ti 5 O 12 /activated-carbon hybrids prepared by the proposed copolymerization and post-activation process may be very promising anode materials of Li-ion capacitors designed for high power applications.
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
Journal of Energy Storage
·
2022
·
IF 8.907
Zi-Rui Li,Seyedmohsen Baghaei Oskouei,Guo-Tao Fu,Özgür Bayer,Li-Wu Fan
Introducing metal fins or foams can both enhance the performance of shell-and-tube phase change thermal energy storage (TES) devices, but the heat transfer mechanisms are different, i.e., heat transfer through a micro-liquid film, named close-contact melting (CCM) mode, brought by fins and reinforced-heat-conduction is triggered by foams. In order to find a method with maximum power density boost for TES devices, an experimental study was conducted to reveal the effect of parallel fins (N = 5, 10) and foams (20 ppi, 40 ppi) attachments on the power density of a shell-and-tube TES device with a heating condition of the 30 °C superheat. Additionally, the finned cases were studied numerically to observe their melting behavior . It was shown that under the working conditions set in this work, the effective use of CCM mode allows addition of fins to win the competition with metal foams for higher power density. At a penalty of energy density loss of only 7 %, the ten-fin-attached TES device achieves a clear boost of power density over 70 % (up to 0.503 W/cm 3 ) and a reduction in melting time of ~47 %. because the CCM mechanism dominates comparing with the two basic heat transfer modes of heat conduction and convection. Introducing metal foams causes both conduction enhancement and convection suppression, thus resulting in high initial power density at the beginning of the melting process and a gradual decrease in power density as the melting process progresses. Properly increasing pore density of metal foams is effective for thermal conductivity enhancement, but too dense structures may lead to deteriorating heat transfer. On balance, taking advantage of CCM mechanism with rational fin design in phase change TES may be a promising and cost-effective way to increase power density, which should be widely used in practice.
研究领域:
能源工程
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传热学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF VINYL & ADDITIVE TECHNOLOGY
·
2021
·Vol. 28
·期 1
·140-152
·
IF 1.993
Zhengpeng Yu,Jingjing Zeng,Jingyuan Tang,Yu Li,Tingting Jin,Benlan Zeng,Xianhua Wei,Jingsong Liu,Linyu Pu,Xu Huang
Owing to their excellent dielectric properties and energy storage performance, polymer-based composites have shown great potential in the application of pulse energy storage capacitors and electrostatic capacitors. In this study, BaTiO 3 (BT) particles with different sizes were modified with dopamine to prepare core–shell structured BT particles (PDA@BT), and then the poly(arylene ether nitrile) (PEN)-based PDA@BT/PEN composites were prepared. As a common biological material, dopamine has a variety of functional groups which can be used to improve the compatibility between the fillers and the matrix. Moreover, the movement of the carriers at the interface of the composites is limited and the loss is reduced. The composites with an optimized filler size illustrate a high energy density of 1.37 J/cm 3 at 160 kV/mm, which nearly reaches up to the energy density of biaxially oriented polypropylene (BOPP) at low electric field. In addition, the composites have the superior power density of 1.88 MW/cm 3 with a fast discharge time of 0.138 μs.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Zhaojie Yang,Minghua Zhang,Zhixin Zhao,Wenting Lan,Xi Zhang,Minmin Fan
Two types of new 2D MXenes (LiF–Ti 3 C 2 T x and NH 4 HF 2 –Ti 3 C 2 T x ) were prepared by selective etching of Ti 3 AlC 2 with LiF/HCl and NH 4 HF 2 aqueous solutions, respectively, and they were introduced as nanofillers into quaternized polysulfone/polyquaternium-10 (QPSU/PQ-10) anion exchange membranes (AEMs) with semi-interpenetrating polymer network, thereby preparing two types of MXene-doped QPSU/PQ-10 AEMs. The resulting MXene-doped QPSU/PQ-10 AEMs have obvious nanoscale microphase-separated morphologies, and their ionic conductivity and power density are significantly improved compared with the pristine QPSU/PQ-10 AEM. Among them, the ionic conductivity and power density of NH 4 HF 2 –Ti 3 C 2 T x MXene-doped AEM can reach 88.76 mS/cm at 80 °C and 106.28 mW/cm 2 at 60 °C, respectively, which are 26.3% and 37.5% higher than those of the pristine QPSU/PQ-10 AEM. Additionally, the MXene-doped QPSU/PQ-10 AEMs with semi-interpenetrating network have moderate water uptake and swelling ratio, excellent thermal and mechanical properties , as well as good oxidation resistance and alkaline stability, which can meet the application requirements of AEMs for fuel cells, exhibiting their bright application prospects in fuel cells.
研究领域:
材料科学
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能源工程
✓ 已验证
DOI
高影响因子
Advanced Energy Materials
·
2021
·Vol. 11
·期 12
·2100020
·
IF 29.368
Wenbin Kang,Li Zeng,Shangwen Ling,Chuhong Zhang
Modern electronics place stringent requirements on power supplies, calling for high energy and power density within restricted footprints. 3D printing allows for customized electrode designs with outstanding loading densities and represents a seemingly promising solution. However, the sluggish mass transport within bulky matrices presents serious issues to charge storage kinetics. Doping engineering in conjunction with 3D printing is used to achieve a state-of-the-art areal capacitance of 11.8 F cm −2 , which is among the best for carbonaceous supercapacitors, results in an electrode heavily loaded at 85.1 mg cm −2 . Simultaneously, an uncompromised kinetic performance rivaling high-rate thin films is delivered, allowing for flash-charging within 3.6 s while keeping 78.1% capacitance. In agreement with theses appealing features, an unprecedented energy density of 0.66 mWh cm −2 and power density of 1039.8 mW cm −2 for a symmetrical device are registered. Meanwhile, the printed device is equipped with superb mechanical compliance, a rarely achieved, yet gravely desired attribute for 3D printed energy storage devices. This work suggests that flexible energy storage devices with unimpaired kinetics at extremely large loading densities could be realized, therefore overturning the traditional mindset that such a performance can only be achieved in thin film devices which are, however, incapable of securing a large energy output.
研究领域:
材料科学
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电子工程
✓ 已验证
DOI
高影响因子
Matter
·
2023
·
IF 18.9
Congming Li,Xiangming Li,Wei Yu,Ronglin Xiao,Fei Huang,Hongmiao Tian,Chunhui Wang,Xiaoliang Chen,Jinyou Shao
Massively fabricating graphene with high density and high ion conductivity is critical but challenging for large-scale compact capacitive energy storage with high energy and power densities. Here, we demonstrate an efficient, kilogram-scale method for fabricating dense, turbostratic graphene by turbulent flow and isotropic capillary compression at violent boiling temperature, successfully resolving the trade-off between high density and high ion conductivity, as well as scale producing. Turbostratic graphene exhibits 5.4× enhanced ion conductivity, high density of up to 1.12 g cm −3 , and volumetric capacitance of 234 F cm −3 . Stack cells deliver an energy density of 83.2 Wh L −1 and power density of 14 kW L −1 , a milestone in capacitive energy storage. Moreover, orientation and porosity of turbostratic graphene can be tuned by precursors, demonstrating flexibility and viability for diverse applications. Furthermore, all-solid-state pouch cells are fabricated using ionic gel electrolyte, exhibiting multiple optional outputs and being leakage free at bending and folding states.
研究领域:
材料科学
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能源存储
✓ 已验证
DOI
高影响因子
Physica Status Solidi-Rapid Research Letters
·
2021
·Vol. 16
·期 2
·2100517
·
IF 2.821
Feng Zhao,Qingfeng Bian,Yunting Chu,Yi Zhang,Qianyun Zhao,Jingchang Sun,Chengren Li
To date, it is still a challenging topic to achieve a wide tunable emission from the same sample under the excitation of a single pump source. Herein, a new sort of nanophosphor NaYO 2 :Er 3+ /Yb 3+ is prepared and characterized. In particular, the wide tunable range crossing red–yellow–green–white regions can be realized only by modulating the power density of the 980 nm semiconductor laser. The mechanism of emitting white light is discussed, and two formulae for quantitatively defining the fluorescent material's tuning ability are also offered. At the same time, the nanophosphor on hand possesses a high degree of reversibility. The nanophosphor presents comprehensive application prospects in information security, anticounterfeiting, display, and other fields.
研究领域:
材料科学
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光学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2025
·
IF 4.9
Liangxue Bao,Congping Xu,Ruding Zhang,Hongjun Yue
With the increasing demand of high energy and power density for energy storage devices, aqueous zinc-based batteries with high safety and low-cost battery system, have attracted wide attention due to their inherent advantages. Herein, for the first time, fluorinated carbon (CF 0.95 ) materials are reported as cathodes for alkaline zinc batteries and exhibit unprecedented power and energy density. The results show that the material exhibits a very high specific capacity of 703.5 mAh/g as well as an ultrahigh energy density up to 795.5 Wh/kg at a current rate of 50 mA/g (0.071C). Besides, it still holds high capacity of 416.7 mAh/g when discharged at a rate of 50000 mA/g (71C), indicating an outstanding power performance of 25066.0 W/kg. The corresponding capacity can even reach to 170.6 mAh/g, 706 mAh/g and 562.6 mAh/g when it is evaluated at a current rate 0.71C under −20 °C, 0 °C and 50 °C respectively. Finally, electrochemical discharge mechanism based on the conversion reaction is also further uncovered by XRD and SEM characterization and EDS elemental analysis. In conclusion, the alkaline Zn/CF x new-type primary battery systems with excellent properties developed here might show broad application prospects.
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
Materials Today Energy
·
2025
·
IF 8.6
Yong Fan,Yifan Liu,Yiming Chen,Muhammad Shoaib,Tianhui Yu,Jun Luo,Xian Jian
Surface modification of carbon fluoride (CF x ) is one of typical methods to reduce polarization and enhance electrochemical discharge kinetics, in case of ultraviolet (UV) surface modified solid CF x powder, it faces the challenge of uneven issue. Herein, a uniform UV-inducing approach in dynamic alcoholic solution for macro CF x modification was developed to enhance the high rate performance. This approach possesses the advantage of good dispersibility and precise controllability of CF x particles, enabling large-scale preparation in kilogramme level (1∼3 kg per time). The UV-induced CF x displays the high energy density of 785.7 Wh kg -1 and ultrahigh-power density of 90580 W kg -1 at 70 C. The UV-inducing CF x with ultra-thin carbon layers (∼ 0.35 nm) has large specific surface area, abundant electrochemically active C-F bonds, enhanced electrical conductivity and reducing the energy barrier of Li + intercalation into CF x layers. These above synergistic effects supress the polarization, enhance the discharge kinetics behaviour, activate the CF x bond and increase the power density. This work provides a uniform and large-scale approach for Li/CF x primary batteries with ultra-high energy density as well as power density.
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）