ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Anling Tong,Xuanheng Chen,Yang Wang,Yuhong Wang,Qingshui Zheng,Ruowei He,Zhihang Jin,Weihai Sun,Yunlong Li,Jihuai Wu
The all-inorganic CsPbBr3 perovskite solar cells exhibit excellent stability against humidity and thermal conditions as well as relatively low production cost, rendering them a gradually emerging research hot spot in the field of photovoltaics. However, the absence of a hole transport layer (HTL) in its common structure and the substantial energy level difference of up to 0.6 eV between the highest occupied molecular orbital (HOMO) level of CsPbBr3 and the work function of the carbon electrode have emerged as the primary factor limiting the improvement of its power conversion efficiency (PCE). In this work, the monomer 2,5-dibromo-3,4-ethylenedioxythiophene (DBEDOT) is spin-coated onto the surface of the CsPbBr3 film directly and then subjected to annealing; DBEDOT undergoes in situ polymerization to form poly(3,4-ethylenedioxythiophene) (PEDOT), which aims to ameliorate the issue of excessive energy level difference between CsPbBr3 and the carbon electrode, and to facilitate the extraction and transport efficiency of holes between the CsPbBr3 perovskite and the carbon electrode. Compared to the pristine device, the PCE of the device based on in situ polymerization is enhanced and achieves a maximum efficiency of 9.81%. Furthermore, the unencapsulated devices based on in situ polymerization maintain 95.9% of their original efficiency after 40 days of stability testing.
研究领域:
材料科学
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光伏技术
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能源材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
International Journal of Electrochemical Science
·
2024
·
IF 1.3
Ying Geng,Chun-yong Zhang,Lin Zhu,Hao-yu Wang,Ji-rong Bai,Jing-jing Huang,Zhen-long Zhao
s Polymer catalyst electrodes have good electrical conductivity, high mechanical strength and other characteristics, which have good prospects in the future market of green and low carbon. In this paper, the electrode of PEDOT polymer catalyst is studied, and the electrochemical performance of the electrode is improved by doping different metals. This study describes the design of PEDOT-Co 3 O 4 @Mn 3 O 4 /Mn 2 O 3 catalysts by simple solvothermal synthesis. As a catalyst in the hydrogen evolution reaction (HER), the overpotential of the same polarization curve is much smaller than that of PEDOT, with a Tafel slope of 118.21 mV dec ‐1 , by electrochemical and characterization analysis. In the test of the supercapacitor performance, it has a large specific capacitance of 1298.5 Fg -1 and a small electrical impedance (0.21 Ω). After 2000 cycles of CV test, the capacitance remains 87.76 %, and the curve shape is stable, which proves that it has good electrochemical performance. Our results confirm the materials have great application prospects in HER and capacitors.
研究领域:
材料科学
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电化学
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能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
·
2022
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IF 6.137
Lang Wang,Xinyu Wang,Binxin Song,Zhe Wang,Linlin Zhang,Qiongqiong Lu
MnO 2 is a type of ideal cathode material for aqueous zinc-ion batteries (ZIBs) owing to reasonable price, innocuity, and environmental friendliness. Nevertheless, it plagued by the dissolution of manganese ions and poor electrical conductivity . Therefore, designing and fabricating high-performance MnO 2 based cathode materials are essential for the development of ZIBs. In this work, poly(3,4-ethoxylenedioxythiophene) coated MnO 2 (MnO 2 @PEDOT) is in situ fabricated by mixing 3,4-ethoxylenedioxythiophene (EDOT) and KMnO 4 solution to restrain the dissolution of manganese ions, enhance the electronic conductivity and structural stability. As a result, MnO 2 @PEDOT composite possesses superior electrochemical performance . An outstanding capacity of 242 mA h g –1 at 0.2 A g –1 was reached, and eminent long-term stable cycling performance above 1000 cycles with the capacity retentions of 85.1% at 2 A g –1 was achieved. This study demonstrated a facile in situ synthesis strategy of MnO 2 @PEDOT, and it showed a promising potential for practical application.
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
ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Ying Wu,Junyi Wang,Xueqing Qiu,Renqiang Yang,Hongming Lou,Xichang Bao,Yuan Li
Sulfonated-acetone-formaldehyde (SAF) was grafted with alkali lignin (AL) to prepare grafted sulfonated-acetone-formaldehyde lignin (GSL). Considering the rich phenolic hydroxyl groups in GSL, we detected a hole mobility of 2.27 × 10–6 cm2 V–1 s–1 with GSL as a hole transport material by space-charge-limited current model. Compared with nonconjugated poly(styrene sulfonic acid), GSL was applied as p-type semiconductive dopant for PEDOT to prepare water-dispersed PEDOT:GSL. PEDOT:GSL shows enhanced conductivity compared with that of PEDOT:PSS. Simultaneously, the enhanced open-circuit voltage, short-circuit current density, and fill factor are achieved using PEDOT:GSL as a hole extract layer (HEL) in sandwich-structure inverted perovskite solar cells. The power conversion efficiency is increased to 14.94% compared with 12.6% of PEDOT:PSS-based devices. Our results show that amorphous GSL is a good candidate as dopant of PEDOT, and we provide a novel prospective for the design of HEL based on lignin, a renewable biomass and phenol derivatives.
研究领域:
材料科学
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可再生能源
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有机电子学
✓ 已验证
DOI
高影响因子
Energy Advances
·
2024
·Vol. 3
·期 5
·1111-1120
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IF 3.2
Pengwei Liu,Shouyan Sun,Tongfei Wang,Xiaojuan Shen,Maiyong Zhu
Considering its integration with other electronics, three-dimensional (3D) silicon with a large surface area is an attractive electrode substrate for supercapacitors (SCs). However, the poor silicon surface stability as well as the corresponding complicated and expensive protective fabrication process impede the practical applications of silicon-based SCs. In this work, a novel electrode was developed with a simple and facile solution method, where electrodeposited Ni particles served as the current collector layer (CC-layer) and the composite of poly(3,4-ethylenedioxythiophene) (PEDOT) and manganese dioxide (MnOx) prepared via the one-step co-electrodeposition method worked as active materials. The compact layer generated from Ni particles and PM was tightly wrapped around SiNWs, protecting the silicon surface from oxidation/corrosion. The deposition time of the Ni particles and PM was investigated. To further improve the electrochemical performance of the electrode, Pt nanoparticles (NPs) were introduced into the PM layer. The NP introduction not only enhanced the conductivity of the electrode but also made the surface become more hydrophilic, favoring the ion/charge transport. Benefiting from the large surface areas of SiNWs, the high conductivity of the CC-layer generated from the Ni particles, the high-capacity of PM and the hydrophilic surface resulting from Pt decoration, the synthesized NSi@PM–Pt electrode demonstrates a high areal specific capacitance of 207.43 mF cm−2 at 1 mA cm−2. The symmetric device delivers a maximum energy density of 0.006 mW cm−2 with a good stability retention up to 94.6% over 5000 cycles. The results afford a promising solution strategy to prepare high-performance silicon-based SCs with a simple, facile and cost-effective method.
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
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Xiaoting Liu,Yingyi Ma,Yu Si,Xinzheng Li,Xinran Li,Jingfang Li
Conducting polymers hold great prospects in energy storage, especially in the field of flexible energy storage, however, their broad applications are limited due to the poor processability, difficulty in structural design diversity and unsatisfactory performance when used alone. Herein, the processability of PEDOT in organic phase is significantly enhanced by surfactant modification via a self-assembly process, contributing to the convenient and low-cost construction of 3D PEDOT architecture. Importantly, the PEDOT and rGO can be introduced into the same porous structure synchronously and conveniently. Superior capacitive performance is shown for the porous PEDOT/rGO film benefits from the combination of PEDOT with excellent electrochemical stability, rGO with high conductivity and porous structure with abundant active sites and chambers for electrolyte storage. The porous PEDOT/rGO film can be used as a scaffold for the deposition of conductive polymers. For example, once PPy is deposited, a high specific capacitance of 407.8 F g -1 at a current density of 0.5 A g -1 , accompanied by a prominent capacitance retention of 90% after 5000 cycles are achieved. When it is used to construct the symmetric supercapacitor (SSC), a high energy density of 52.9 Wh kg -1 at the power density of 200.2 W kg -1 is delivered, with a high capacitance retention of 85%. Moreover, it shows excellent mechanical flexibility upon multiple bending cycles, rendering great potential in portable or wearable energy storage devices.
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
Nano Energy
·
2024
·
IF 16.8
Shixia Lan,Yongyun Mao,Bingpu Zhou,Wanbiao Hu
Conductive hydrogels, due to their adjustable flexibility and conductivity, present considerable advantages in tackling the bottleneck issues associated with electron transfer in wearable electronic devices. However, during the deformation process, achieving effective electron transfer between the hydrogel electrode and the adjacent frictional piezoresistive sensing layer, as well as effective transmission within the hydrogel electrode itself, remains a significant challenge. Herein, PEDOT molecular bridging is proposed to establish an efficient connection between hydrogel electrode and the adjacent layer. Polyacrylamide integrated with PEDOT interpenetrating network-based hydrogel (PPNM) is prepared as electrode through synergistic dual-crosslinking. A repetitive vacuum-assisted dip-coating technique is employed to modify TPU foam scaffolds with silver nanowire (AgNW) and PPNM, resulting in TPU@AgNW@PPNM foam (TAP) with a three-dimensional dual-conductive network as the adjacent frictional piezoresistive sensing layer. By tightly integrating TAP with PPNM, a mutual PEDOT-bridging between TAP and PPNM is established. Importantly, the interface remains intact and ensures stable electron transmission even under significant stretching and bending conditions. The piezoresistive sensor and triboelectric nanogenerator assembled based on TAP and PPNM exhibited an enhanced sensitivity of 27.8 kPa −1 and an output power density of 3.1 mW m −2 , respectively. This innovative solution effectively addresses the critical issue of electronic transfer between the electrode layer and the adjacent layer in wearable electronic devices, while also mitigating the problems related to the rigidity of electrodes that can impact the flexibility and comfort of wearable devices.
研究领域:
材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2023
·Vol. 34
·期 3
·1-15
·
IF 2.8
Jiang Xiangqian,Chen Weiping,Li Ling,Gao Peng,Ban Chuncheng,Hao Jiandong,Shi Ningqiang
Boron Nitride Aerogels/PEDOT: PSS composite film with good thermoelectric properties were prepared by a simple preparation process. Boron nitride aerogels with a width of less than 1 μm and thickness of approximately 15 nm were prepared by a combination of freeze-drying and high-temperature tubular furnace heating. Then, boron nitride aerogels material was impregnated in a certain amount of 3, 4-ethylenedioxythiophene monomer polymer: polystyrene sulfonate (PEDOT: PSS) solution by ultrasonic vibration and magnetic stirring to produce a composite film. The output voltage of the flexible Boron Nitride Aerogels/PEDOT: PSS/Au piezoelectric sensor increases with an increase in the bending angle. When the bending angle is greater than 90°, the output voltage reaches 4.03 V. For the sake of broaden the application prospect of nanocomposite films, flexible wearable thermoelectric devices were prepared. Using the human body as a heat source, the output voltage of flexible thin-film thermoelectric devices can reach 233.6 mV. According to the formula calculation, the Seebeck coefficient is 18.54 mV/K and the thermoelectric power factor is 28.86 μW/mK 2 . With improvements in the energy collection capacity of wearable energy devices, we believe that more work will be done in the future to realize the coordinated development of functionality, comfort and health on the basis of improving energy conversion efficiency.
研究领域:
材料科学
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纳米技术
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能量转换
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传感器与执行器
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Qiao Fan,Kai Zhang,Shigui Peng,Yufei Liu,Lanlan Wei,Shuhao Qin,Min He,Jialin Guo,Tingting Luo,Jie Yu
Poly(3,4-ethylenedioxythiophene) (PEDOT): poly (styrene sulfonic acid) (PSS) is a promising intrinsically conductive polymer. Researchers have been modifying PSS to enhance the conductivity of PEDOT: PSS films, however, the relationship between PSS molecular weight and PEDOT: PSS conductivity remains unclear. Herein, the conductivity mechanism is discussed in detail, and it is observed that, as the molecular weight of PSS increases, the conductivity initially increases but then decreases after reaching a peak. This behavior can be attributed to the different aggregation state structures, the degree of oxidation , and the molecular conformation of PEDOT. Specifically, the optimal PSS molecular weight leads to an increase in PEDOT crystallinity and the appearance of a continuous nanoproto-fiber morphology. Additionally, the highest degree of PEDOT oxidation and the largest molecular weight of PEDOT polymerized after reduction treatment, along with the transition from coiled-coil conformation to linear or swollen coils, synergistically increase the carrier mobility and carrier concentration, resulting in a significant improvement in electrical conductivity . However, further increase in PSS molecular weight leads to decreased crystallinity, reduced continuous crystal domains, lower PEDOT oxidation levels, and molecular weights, preventing the generation of effective charge pathways. The electrical conductivity mechanism reported here provides theoretical models and specific strategies for improving the electrical conductivity of thermoelectric , electromagnetic shielding, and bioelectronic materials.
研究领域:
材料科学
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电子工程
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生物电子学
✓ 已验证
产品关联
DOI
高影响因子
NANO
·
2018
·
IF 1.1
Ziyang Lu,Zehui Yu,Jinbo Dong,Xinyu Xiong,Lin Gao,Minshan Song,Yang Liu,Di Fan,Yongsheng Yan,Pengwei Huo
The novel magnetic PW-doped PEDOT (PW@PEDOT) imprinted photocatalyst with good reproducibility was prepared by the surface imprinting technique and microwave heating method. Due to the existence of PW@PEDOT and imprinted cavity in the imprinted layer, the as-prepared magnetic PW@PEDOT imprinted photocatalyst not only had higher photocatalytic activity, but also had the excellent specific recognition ability for selective photodegradation of TC. This paper proposed a new idea to prepare the imprinted photocatalysts.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Chemistry-An Asian Journal
·
2015
·Vol. 10
·期 9
·1892-1897
·
IF 4.587
Junjie Wang,Guiyun Xu,Wei Wang,Shenghao Xu,Xiliang Luo
Graphical Doubling Up : Cu−Co nanoparticles were deposited onto the PEDOT/CNTs (poly(3,4-ethylenedioxythiophene/carbon nanotubes) nanocomposite surface through a simple electrochemical approach, and the prepared electrode modified with Cu−Co/PEDOT/CNTs exhibited excellent catalytic properties towards the electrochemical oxidation of nitrite. Copper–cobalt bimetal nanoparticles (Cu−Co) have been electrochemically prepared on glassy carbon electrodes (GCEs), which were electrodeposited with conducting polymer nanocomposites of poly(3,4-ethylenedioxythiophene) (PEDOT) doped with carbon nanotubes (CNTs). Owing to their good conductivity, high mechanical strength, and large surface area, the PEDOT/CNTs composites offered excellent substrates for the electrochemical deposition of Cu−Co nanoparticles. As a result of their nanostructure and the synergic effect between Cu and Co, the Cu−Co/PEDOT/CNTs composites exhibited significantly enhanced catalytic activity towards the electrochemical oxidation of nitrite. Under optimized conditions, the nanocomposite-modified electrodes had a fast response time within 2 s and a linear range from 0.5 to 430 μ m for the detection of nitrite, with a detection limit of 60 n m . Moreover, the Cu−Co/PEDOT/CNTs composites were highly stable, and the prepared nitrite sensors could retain more than 96 % of their initial response after 30 days.
研究领域:
材料科学
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电化学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL CHEMISTRY
·
2017
·
IF 6.32
Liqi Dong,Youshan Zhang,Xuemin Duan,Xiaofei Zhu,Hui Sun,Jingkun Xu
The development of electrochemical methods for enantioselective recognition is a focus of research in pharmaceuticals and biotechnology. In this study, a pair of water-soluble chiral 3,4-ethylenedioxythiophene (EDOT) derivatives, (R)-2′-hydroxymethyl-3,4-ethylenedioxythiophene ((R)-EDTM) and (S)-2′-hydroxymethyl-3,4-ethylenedioxythiophene ((S)-EDTM), were synthesized and electrodeposited on the surface of a glassy carbon electrode (GCE) via current–time (I–t) polymerization in an aqueous LiClO4 electrolyte. These chiral PEDOT polymers were used to fabricate chiral sensors and to investigate the enantioselective recognition of d-/l-3,4-dihydroxyphenylalanine, d-/l-tryptophan, and (R)-/(S)-propranolol enantiomers, respectively. The results indicated that the (R)-PEDTM/GCE sensor showed a higher peak current response toward the levo or (S) forms of the tested enantiomers, while the opposite phenomenon occurred for (S)-PEDTM/GCE. The mechanism of the stereospecific interaction between these enantiomers and the chiral polymers was determined. Therefore, a model of the chiral recognition by the chiral conducting polymer electrodes and an electrochemical method was proposed. The chirality of the enantiomers was confirmed by two parameters: the chirality of the electrode and the peak current response. These findings pave the way for the application of chiral PEDOT as electrode modification material in the electrochemical chiral recognition field.
研究领域:
生物医学工程
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分析化学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）