ACS Applied Materials & Interfaces
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2017
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IF 7.504
Dawei Zhao,Qi Zhang,Wenshuai Chen,Xin Yi,Shouxin Liu,Qingwen Wang,Yixing Liu,Jian Li,Xianfeng Li,Haipeng Yu
Recent improvements in flexible electronics have increased the need to develop flexible and lightweight power sources. However, current flexible electrodes are limited by low capacitance, poor mechanical properties, and lack of cycling stability. In this article, we describe an ionic liquid-processed supramolecular assembly of cellulose and 3,4-ethylenedioxythiophene for the formation of a flexible and conductive cellulose/poly(3,4-ethylenedioxythiophene) PEDOT:poly(styrene sulfonate) (PSS) composite matrix. On this base, multiwalled carbon nanotubes (MWCNTs) were incorporated into the matrix to fabricate an MWCNT-reinforced cellulose/PEDOT:PSS film (MCPP), which exhibited favorable flexibility and conductivity. The MCPP-based electrode displayed comprehensively excellent electrochemical properties, such as a low resistance of 0.45 Ω, a high specific capacitance of 485 F g–1 at 1 A g–1, and good cycling stability, with a capacity retention of 95% after 2000 cycles at 2 A g–1. An MCPP-based symmetric solid-state supercapacitor with Ni foam as the current collector and PVA/KOH gel as the electrolyte exhibited a specific capacitance of 380 F g–1 at 0.25 A g–1 and achieved a maximum energy density of 13.2 Wh kg–1 (0.25 A g–1) with a power density of 0.126 kW kg–1 or an energy density of 4.86 Wh kg–1 at 10 A g–1, corresponding to a high power density of 4.99 kW kg–1. Another kind of MCPP-based solid-state supercapacitor without the Ni foam showed excellent flexibility and a high volumetric capacitance of 50.4 F cm–3 at 0.05 A cm–3. Both the electrodes and the supercapacitors were environmentally stable and could be operated under remarkable deformation or high temperature without damage to their structural integrity or a significant decrease in capacitive performance. Overall, this work provides a strategy for the fabrication of flexible and conductive energy-storage films with ionic liquid-processed cellulose as a medium.
研究领域:
材料科学
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电化学
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纳米复合材料
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能源存储
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柔性电子学
✓ 已验证
DOI
高影响因子
ANALYST
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2025
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IF 3.3
Zhixiang Liang,Huimin Li,Junlei Han,Jun Chen,Jiemeng Ding,Wenteng Tang,Minghui Wang,Qi Meng,Lei Zhang,Zetao Zhang,Li Wang
Cardiovascular toxicity is a key safety indicator that has to be evaluated in the process of new drug development. To enable high-throughput and multiparametric assessment of cardiomyocyte function, we developed a 32-well high-throughput microelectrode array (MEA) platform integrated with electrical stimulation. Electrode surface modification with PEDOT:PSS-MWCNT nanocomposites significantly enhanced electrochemical performance and signal acquisition fidelity, reducing electrode impedance by 37-fold compared to unmodified Au electrodes. Notably, the built-in electrical stimulation effectively promoted electrophysiological and structural maturation of human iPSC-cardiomyocytes, demonstrated by a 15.47% increase in sarcomere length and 1.73-fold upregulation of connexin-43 expression. The platform's utility was further validated through cardiotoxicity assessment of two representative ion channel modulators, E-4031 (a selective hERG channel blocker) and verapamil (a clinically used calcium channel blocker). Collectively, this study presents an integrated platform that combines functional monitoring with cellular maturation enhancement, offering a powerful tool for cardiotoxicity screening and disease modeling.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Omega
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2024
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IF 3.7
Yanyan Xu,Xien Yang,Zhiwen Liang,Lizhang Lin,Wenbo Zhao,Liyang Wang,Yu Xia,Xudong Lin,Mang I. Vai,Sio Hang Pun,Baijun Zhang
Optogenetics-based integrated photoelectrodes with high spatiotemporal resolution play an important role in studying complex neural activities. However, the photostimulation artifacts caused by the high level of integration and the high impedance of metal recording electrodes still hinder the application of photoelectrodes for optogenetic studies of neural circuits. In this study, a neural optrode fabricated on sapphire GaN material was proposed, and 4 μLEDs and 14 recording microelectrodes were monolithically integrated on a shank. Poly(3,4-ethylenedioxythiophene)/polystyrenesulfonate and multiwalled carbon nanotubes (PEDOT:PSS-MWCNT) and poly(3,4-ethylenedioxythiophene) and graphene oxide (PEDOT-GO) composite films were deposited on the surface of the recording microelectrode by electrochemical deposition. The results demonstrate that compared with the gold microelectrode, the impedances of both composite films reduced by more than 98%, and the noise amplitudes decreased by 70.73 and 87.15%, respectively, when exposed to light stimulation. Adjusting the high and low levels, we further reduced the noise amplitude by 48.3%. These results indicate that modifying the electrode surface by a polymer composite film can effectively enhance the performance of the microelectrode and further promote the application of the optrode in the field of neuroscience.
研究领域:
神经科学
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生物医学工程
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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）