SOLID STATE IONICS
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2025
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IF 3.3
Peng Xu,Haiwei Wu,Haiwen Li,Hanbin Liu,Zhijian Li
In recent years, with the continuous development of high-voltage cathode materials for lithium-ion (Li + ) batteries, the LiMn 1-X Fe X PO 4 solid solution obtained by using Mn element to replace part of Fe on the basis of LiFePO 4 (LFP) has received extensive attention. It shows significantly improved voltage and capacity than LFP, which is currently regarded as a leading update for the traditional LFP cathode. At present, preparation of high-performance LiMn 1-X Fe X PO 4 using common high-temperature solid-state method is still challenging and the basic intricate coupling of the Mn-Fe ratio and ball milling time parameters on its electrochemical performance is still need to be fully studied due to the parametric complexity. Herein, the carbon wrapped LiMn 1-X Fe X PO 4 /C material was prepared by high-temperature solid-phase method, and paper-based LiMn 1-X Fe X PO 4 /C electrodes were also fabricated to fully study the synergistic effects of ball milling times (0.5 h, 1 h, 2 h) and Mn-Fe ratios (5:5, 6:4, 7:3, 8:2) on their electrochemical performance. It was found that there happened to be optimized ball milling time for each Mn-Fe ratio based LiMn 1-X Fe X PO 4 /C materials. The higher Mn-Fe ratio, the longer ball milling time that is needed to achieve high electrochemical performance of paper-based LiMn 1-X Fe X PO 4 /C cathodes. Through detailed analysis of cyclic voltammetry (CV) curves, cycling and rate performance, it was found that LiMn 1-X Fe X PO 4 /C cathode prepared by ball milling for 1 h and Mn-Fe ratio of 7:3 has the best optimized voltage, cycling and rate performance.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2020
·
IF 7.632
Ben Niu,Tao Hua,Bingang Xu
Technology advances in flexible and wearable electronics have promoted the booming development for high-performance flexible electrodes. In this work, we fabricated a highly conducive paper-based electrode by coating silver nanoparticles (AgNPs) on common cellulose paper using a polymer-assisted metal deposition strategy, where the mussel-inspired polydopamine (PDA) layer was applied as an interface to facilitate the bonding between paper substrates and AgNPs. Dense AgNPs can directly grow on the surface of PDA-coated paper at mild conditions, forming a highly conductive layer. The as-fabricated flexible paper electrode displays a high electrical conductivity of 4058.1 S/m and low sheet resistance of 6.5 Ω/sq, which outperforms many reported counterparts. Moreover, with the strong interfacial reinforcement by PDA, the AgNPs adhere to the paper tightly and the electrode presents a notable stability under sonication and mechanical bending. The used paper is low cost and environmentally friendly, and the preparation process is simple and green without the need of extreme conditions or strong solvents, which can be scaled up to large-scale fabrication.
研究领域:
材料科学
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纳米技术
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电子工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Hai Huang,Changmei Lin,Zifeng Hua,Jiajia Guo,Dongdong Lu,Yonghao Ni,Shilin Cao,Xiaojuan Ma
In the era of miniaturization, low-cost, high mechanical stability and lightweight are the pre-requisites for the commercialization of smart-wearable supercapacitors (SCs). For this purpose, light-weight, binder-free, sustainable cellulose based thin-films with conductive polymers such as polypyrrole (PPy) have attained considerable attention. However, the delamination of the conductive materials in sandwich-type structures of SCs, particularly during the cyclic bending process at high current densities, is a great challenge for wearable SCs. To circumvent the problem of delamination of conductive materials, multi-layer forming concept that consists of three sequential steps (forming, pressing and drying) in papermaking technology has inspired us to prepare mechanically ultra-stable paper electrodes towards for wearable SCs. For this reason, we firstly adopted the multi-layer concept to design all-in-one paper flexible SCs by integrating PPy-modified cellulose fibers as electrodes, and un-modified cellulose paper as a separator. More importantly, a cocklebur like structure of PPy-modified cellulose fiber has been attained by the virtue of the strong inter-molecular hydrogen bonding between free hydroxyl groups on the surface cellulose fibers and PPy, resulting in increased PPy loading, and thus enhancing the electrochemical properties of the all-in-one paper supercapacitor . Furthermore, these hydroxyl groups facilitate the inter-layer bonding of the paper structure in the subsequent pressing and drying processes, favoring the integration of the electrodes and separator. Benefiting from the multi-layer forming concept and suitable morphology of PPy- modified cellulose, we have prepared an ultra-thin (150 μm) all-in-one paper SC with high areal specific capacitance (up to 562 mF cm −2 ), high energy density (up to 3.1 mWh cm −3 ) and high-power density (up to 414.9 mW cm −3 ). Moreover, the all-in-one paper SC shows excellent flexibility, with negligible specific capacitance loss by bending at 0° to 180° angles after repeating 1000 times. The proposed concept and supercapacitor fabrication process is scalable and can be readily implemented in a modern paper industry.
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
Advanced Fiber Materials
·
2022
·Vol. 4
·期 5
·1246-1255
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IF 12.958
Yu Yan,Pan Diankun,Zhao Liang,Huang Shiqi,Lin Panlong,Wang Zhixian,Jia Yingbin,Wang Hua,Wang Luoxin
In this paper, an aramid chopped fiber, so-called (ACF)/polyphenylene sulfide (PPS) composite, containing multi-walled carbon nanotubes (MWCNT), and in situ polymerized polypyrrole (PPy) was designed and fabricated, to be applied as a paper based electrode. The ACF/PPS/MWCNT-PPy electrode features highly porous paper-like structure with excellent electrochemical activity, rendering it a high areal capacitance of ~ 3205 mF cm −2 at a current density of 5 mA cm −2 . After 5000 charge–discharge cycles, the areal capacitance still maintains 93% and 70% at high current densities of 20 and 80 mA cm −2 , respectively. Moreover, the ACF/PPS/MWCNT-PPy electrode displays over 50% the areal capacitance and maintains it's mechanical stability after annealing at 300 °C. The UL-94 test reveals that the highest V-0 flame-retardant performance can be achieved. All these results suggest that the ACF/PPS/MWCNT-PPy composite is a promising material to be used as electrode for supercapacitor with high energy-storage capability and noninflammability.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Dingqiang Liang,Ziyang Chang,Yanguang Chen,Jianbin Chen,Huifang Zhao,Lizheng Sha,Daliang Guo
With the rapid expansion of the flexible electronics market, it is critical to develop high-performance flexible energy storage electrode materials. Cellulose fibers , which are sustainable, low cost, and flexible, fully meet the requirements of flexible electrode materials, but they are electrically insulating and cause a decrease in energy density. In this study, high-performance paper-based flexible electrode materials (PANI:SSA/Zr-CFs) were prepared with cellulose fibers and polyaniline. A high mass loading of polyaniline was wrapped on zirconia hydroxide-modified cellulose fibers under metal-organic acid coordination through a facile in situ chemical polymerization process. The increase in mass loading of PANI on cellulose fibers not only improves the electrical conductivity but also enhances the area-specific capacitance of the flexible electrodes. The results of electrochemical tests show that the area specific capacitance of the PANI:SSA/Zr-CFs electrode is 4181 mF/cm 2 at 1 mA/cm 2 , which is more than two times higher than that of the electrode with PANI on pristine CFs. This work provides a new strategy for the design and manufacture of high-performance flexible electronic electrodes based on cellulose fibers.
研究领域:
材料科学
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能源存储
·
柔性电子
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Biosensors-Basel
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2022
·Vol. 12
·期 10
·904
·
IF 5.743
Rongfang Chen,Xia Peng,Yonghai Song,Yan Du
Herein, a paper-based electrochemical sensor based on PtNP/COFTFPB−DHzDS@rGO was developed for the sensitive detection of furazolidone. A cluster-like covalent organic framework (COFTFPB−DHzDS) was successfully grown on the surface of amino-functional reduced graphene oxide (rGO-NH2) to avoid serious self-aggregation, which was further loaded with platinum nanoparticles (PtNPs) with high catalytic activity as nanozyme to obtain PtNP/COFTFPB−DHzDS@rGO nanocomposites. The morphology of PtNP/COFTFPB−DHzDS@rGO nanocomposites was characterized, and the results showed that the smooth rGO surface became extremely rough after the modification of COFTFPB−DHzDS. Meanwhile, ultra-small PtNPs with sizes of around 1 nm were precisely anchored on COFTFPB−DHzDSto maintain their excellent catalytic activity. The conventional electrodes were used to detect furazolidone and showed a detection limit as low as 5 nM and a linear range from 15 nM to 110 μM. In contrast, the detection limit for the paper-based electrode was 0.23 μM, and the linear range was 0.69–110 μM. The results showed that the paper-based electrode can be used to detect furazolidone. This sensor is a potential candidate for the detection of furazolidone residue in human serum and fish samples.Keywords:paper-based electrode;reduced graphene oxide;covalent organic framework;furazolidone;electrochemical sensor
研究领域:
分析化学
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry B
·
2014
·Vol. 2
·期 22
·3462-3468
·
IF 0
Yanhu Wang,Jinmeng Xu,Chao Ma,Shuai Li,Jinghua Yu,Shenguang Ge,Mei Yan
In this work, a paper-based chemiluminescence excited photoelectrochemical aptamer device (PPECD) was developed for adenosine triphosphate (ATP) measurement based on a porous Au-paper electrode modified with a tin dioxide quantum dot/reduced graphene oxide nanocomposite (SnO2 QD/RGO) integrated with an all-solid-state paper supercapacitor (PSC) amplifier and a digital multi-meter (DMM). The Au-paper electrode was constructed through the growth of a gold nanoparticle (AuNP) layer on the back of the paper working electrode to improve the electron conduction. Fe3O4@AuNP nanocomposites were used as labels of luminol, glucose oxidase (GOx) and signal aptamer which greatly enhanced the chemiluminescence emission and provided a simple magnetic separation approach to attain interference-free measurement for real detection. GOx was used for the oxidation of glucose to produce H2O2 which was not only used as the co-reactant in the CL system, but also as the electron donors to suppress the corrosion of SnO2 QDs under illumination as well as to facilitate the generation of stable photocurrent. A PSC was constructed and integrated into a PPECD as an effective electrical energy storage unit to collect and store the photocurrents. The stored electrical energy could be released instantaneously through a low cost, portable, and simple DMM to obtain an amplified current for the quantification of ATP.
研究领域:
生物传感器
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分析化学
✓ 已验证
DOI
PubMed
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