ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 20
·2214886
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IF 19
Cong Wu,Hongsheng Shi,Lianqi Zhao,Xin Chen,Xinshui Zhang,Chang Zhang,Jiameng Yu,Yinjie Lv,Ran Wei,Tianyi Gao,Jin Xie,Yi Yu,Wei Liu
Electrochromic energy storage devices (EESDs) are incorporating electrochromic and energy storage functions, which can visually display energy storage levels in real-time to promote the next generation of transparent battery development. However, their performances are still limited for practical applications. Herein, a self-powered EESD based on complex niobium tungsten oxide is designed using aqueous Zn 2+ and hybrid Zn 2+ /M n+ (M n+ = Al 3+ , Mg 2+ , and K + ) electrolytes. The results reveal that the use of Zn 2+ /Al 3+ hybrid electrolyte achieves superior electrochromic performances including a short self-coloring time, high optical contrast, and excellent cyclic stability. Furthermore, it is also found that the self-coloring process is accompanied by a high discharged capacity of niobium tungsten oxide, with high optical modulation in the Zn 2+ /Al 3+ hybrid electrolyte. The detailed mechanism on the performances of EESD using various electrolytes is systematically studied. This work provides a simple and effective strategy for an aqueous and self-powered EESD with high optical contrast and good cycle stability.
研究领域:
材料科学
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电化学
·
储能技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Peng Zhou,Yaqiang Wu,Cong Wang,Huining Huang,Danning Xing,Yuanyuan Liu,Zeyan Wang,Peng Wang,Zhaoke Zheng,Hefeng Cheng,Ying Dai,Baibiao Huang
Tailoring the composition and structure of transition metal compounds via a simple method is a crucial step in the pursuit of high-performance electrochemical energy storage materials. Herein, we design and synthesize a Co modified Ni 3 S 2 (denoted as Co-Ni 3 S 2 ) electrode with a hierarchical structure by a simple one step sulfuration reaction from NiCo-LDH. Benefiting from both the hierarchical structure and the bimetallic composition, the developed electrode exhibits excellent electrochemical performances including ultrahigh specific capacitance (1826.4 F g −1 at 2 A g −1 ) and great rate capability (about 53.9% at 20 A g −1 ), which are much higher than that of NiCo-LDH precursor and monometallic Ni 3 S 2 electrode. Moreover, the energy storage device assembled with the Co-Ni 3 S 2 electrode and the activated carbon (AC) electrode exhibits superior energy density of 59.1 Wh kg −1 and 24.7 Wh kg −1 while maintaining the ultrahigh powder density of 1275.5 W kg −1 and 9.8 kW kg −1 , respectively. In addition, the device also displays an outstanding electrochemical stability (about 94.9% retention after 16,000 cycles).
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xianggang Guan,Zhe Zhang,Shichao Zhang,Ziwei Wei,Fangchao Han,Jingli Guan,Shuai Yin,Yalan Xing,Puheng Yang,Xiaomeng Wu
Polyacrylonitrile (PAN) and thermoplastic polyurethane (TPU) were used as sacrificial polymer chaperone adhesives to prepare porous flexible free-standing electrodes. The prepared electrode has excellent flexibility, and the surface porous structure realizes porous channels for electrolyte, which fully ensures the infiltration of electrolyte in the electrode, so that the electrochemical performance is comparable to that of a conventional coated electrode. Ketjen black carbon (abbreviated KB) and carbon nanofibers (CNF) offer a good electronic conductive network in this electrode, while PAN forms a free-standing skeleton and TPU provides flexible components and sacrificial templates. The method utilized is universal for commercial electrode materials and has excellent practical value. The prepared electrode has an area density of more than 10 mg cm −2 (20 mg cm -2 can be achieved by adjusting the slurry ratio), which is equivalent to the area density of current commercial coating electrodes. The electrode with NCM523 as active material exhibits the same electrochemical performance as traditional coated electrodes, deliver a high charge capacity 150.0 mAh g −1 (10.0 mg cm −2 ) after 100 cycles at 0.2 C.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2024
·
IF 3.7
Qianqian Wan,Yihuo Wu,Yong Yan,Weibing Zhang,Yajuan Zhao,Xinhua Li
Heteroatom-doped carbon materials have considerable potential for applications in energy storage devices (ESDs). In this study, an interconnected B/N/O/P co-doped porous carbon materials (B 5 -CPPCN-700) was synthesised using a simple one-step method with zinc nitrate hexahydrate and 4′-(4-phosphonylphenyl)−3,2′:6′,3″-terpyridine as raw materials through KOH activation. The as-prepared B 5 -CPPCN-700 had a large specific surface area, rough surface for ion adsorption, and suitable pore size distribution for electron transport. Moreover, the co-doped B/N/O/P species—particularly the B species—in B 5 -CPPCN-700 provided active sites and additional pseudocapacitance. These structural and morphological features ensured a high specific capacitance of 503.3 F/g at 0.5 A/g. Furthermore, the assembled symmetric supercapacitor delivered a satisfactory specific energy, specific power (14.98 Wh/kg at 300 W/kg and 6.97 Wh/kg at 22,800 W/kg), and specific capacitance (149.8 F/g at 0.5 A/g and 77.2 F/g at 40 A/g). This study paves the way for the preparation of high-capacitance porous carbon materials for ESDs.
研究领域:
材料科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2013
·
IF 4.675
Liping Zhao,Li Qi,Hongyu Wang
Sodium titanate nanotube (Na-TNT) sample has been prepared by a hydrothermal method using TiO 2 and NaOH as starting materials and then calcined at 400 °C in air. X-ray diffraction and N 2 adsorption–desorption tests have been employed to characterize its crystal and pore structure . The Na-TNT can be used as the negative electrode for electric energy storage devices using Na + -based organic electrolytes. The charge storage mechanism at the Na-TNT negative electrode has been investigated by electrochemical tests (galvanostatic charge–discharge, cyclic voltammetry , etc.), ex-situ XRD and HRTEM measurements. The electric energy storage devices of Na-TNT/graphite have been constructed and the influence of graphite/Na-TNT mass ratio on their performance has been studied.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Muhammad Saqib,Ali Asghar,Zhangwei Chen,Amal A. Abdel Hafez,Majed Y.A. Almashnowi,Qumail Arshad,Majed Yousef Awaji,Yasir Javad,Mohammed Kuku,Muhammad Shahid Rashid
Transition metal phosphates are gaining attention as an environmentally sustainable and high-theoretical capacity material for electrochemical energy storage devices. This study investigates the impact of adding functionalized graphene Oxide (GO) on the electrochemical sites of cobalt-phosphate (Co 3 (PO 4 ) 2 /GO composite) because of its high surface area and electrical conductivity to open up new possibilities for enhancing the performance of energy storage devices. Herein, nanoflakes like cobalt phosphate and composites with graphene oxide were synthesized using a hydrothermal approach. The crystallinity, morphological effect, and chemical compositional analysis were analyzed via XRD, SEM, and EDS. Then, the electrochemical performance is measured in two different setups, i.e., 2-electrode and 3-electrode cell assembly. In the 3-electrodes setup, the cobalt phosphate/GO composite revealed a high specific capacity of 660 C/g, corresponding to 5 mV/s compared to the individual. In the device performance, cobalt phosphate/GO is utilized as +ev electrode, whereas -ev electrode consists of activated carbon in supercapattery. In their results, the assembled devices produced a specific capacity of 458 C/g with remarkable energy and power density of 82.69 Wh/kg and 433.33 W/kg corresponding to a current density of 0.7 A/g, respectively, with good capacitive retention of 94.77 % after 6 K cycles. Moreover, the theoretical calculation measure from Dunn's model reveals a capacitive contribution increased from 35.51 % to 71.12 % with an increase in scan rates. The study offers a new avenue for advanced 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
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Huiyao Shi,Minglin Li,Jialin Shi,Dindong Zhang,Zhen Fan,Mingjun Zhang,Lianqing Liu
Inverse photoconductance is an uncommon phenomenon observed in selective low-dimensional materials, in which the electrical conductivity of the materials decreases under light illumination. The unique material property holds great promise for biomedical applications in photodetectors, photoelectric logic gates, and low-power nonvolatile memory, which remains a daunting challenge. Especially, tunable photoconductivity for biocompatible materials is highly desired for interfacing with biological systems but is less explored in organic materials. Here, we report nanofibers self-assembled with cyclo-tyrosine-tyrosine (cyclo-YY) having voltage-regulated inverse photoconductance and photoconductance. The peptide nanofibers can be switched back and forth by a bias voltage for imitating biological sensing in artificial vision and memory devices. A peptide optoelectronic resistive random access memory (PORRAM) device has also been fabricated using the nanofibers that can be electrically switched between long-term and short-term memory. The underlying mechanism of the reversible photoconductance is discussed in this paper. Due to the inherent biocompatibility of peptide materials, the reversible photoconductive nanofibers may have broad applications in sensing and storage for biotic and abiotic interfaces.
研究领域:
材料科学
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纳米技术
·
生物医学工程
·
光电
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2023
·
IF 6.9
Menghan Tian,Xueqing Liu,Xungang Diao,Xiaolan Zhong
The conductive polymer polyaniline (PANI) has attracted much attention in the field of electrochromic energy storage device (EESD) due to its rich color changes and good pseudocapacitive properties, however, the operating voltage window and cycling stability of PANI material, as an essential part in the full electrochromic devices , has failed to be fully explored and employed. Herein, we synthesized the PANI and MnO 2 nanocomposite structure via robust one-step electrodeposition approach, forming an intriguing architecture similar to the coral-like nano-porous. The rougher coral-like structure provides a great quantity nano porous ion transport channel, which greatly improves the working voltage range and cycling stability of the electrode, and shows great potential as an anode electrode for EESDs. In addition, we built a complementary full EESD prepared with tungsten oxide (WO 3 ) as the counter electrode, which has both electrochromic and energy storage dual function integration, allowing real-time observation of the EESD operating state based on color change. It can work stably under a large voltage window of -2V–1.5V, with good bistable performance, fast response speed and more than 1000 times electrochemical cycle life. This work provides a new opportunity to design next-generation high-performance and intelligent hybrid energy storage system for consumer electronics.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能量存储
·
电致变色器件
✓ 已验证
产品关联
DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2020
·
IF 4.966
Xing Zhong,Rong Li,Zehong Wang,Yanping Wang,Wei Wang,Dan Yu
Upcycle of waste fabrics has been a promising project since it can reduce textile pollution and provide a prospect to waste management . In this work, a multiple recyclable transparent functional film was fabricated through ionic liquid (IL) assisted regeneration process with a higher yield of 90.40 %, compared with other polymer regeneration process using IL. Fourier Transfer Infrared Spectroscopy (FTIR), X-ray diffraction (XRD), UV–vis Spectrophotometer, as well as tensile strength test were carried out to explore the performance of the regenerated jute film. This transparent renewable jute film can be made into many functional materials, like packaging materials, electrically conductive films or information storage devices. Furthermore, it can be dissolved in IL and regenerate new films for multiple cycles, which can still maintain a relatively high transparency and a considerable mechanical property. Compared to other fabric recycle process, the solvent and production both can be effectively recycled, which can be considered as a green and sustainable tool to manage waste fabrics.
研究领域:
材料科学
·
环境科学
·
可持续工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Fantao Meng,Zhenzhi Wang,Shufen Zhang,Benzhi Ju,Bingtao Tang
Artificial photonic composites can exhibit the structural colors of embedded colloidal arrays and the functionality of polymeric matrix, making them suitable for emerging applications, such as display, sensing, and information security. However, their ability to integrate flexibility, color visibility and stimulus-responsive macroscopic change has not been adequately harnessed. In this study, a self-supporting photonic composite film is constructed by incorporating isotropically arranged polysulfide nanoparticles (PSNs) into polyethylene glycol diacrylate and butyl acrylate copolymers. The inherent light-absorbing properties and high refractive index of PSNs impart the photonic composites with high structural color visibility. Furthermore, the flexible copolymer network enables sustainable optical capability of photonic pattern during deformation. Due to its unique hydrophobic and hydrophilic structures, tunable optical path control can be achieved through solvent-induced microphase separation and inverse transparency changes under thermal stimulation, resulting in self-encryption and decryption. The function of switching desired stimuli into visualized optical signals allows flexible photonic composites to present great prospects in smart materials for dynamic memory devices.
研究领域:
材料科学
·
光学
·
纳米技术
·
聚合物科学
·
智能材料
✓ 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）