56 research outputs found
High-temperature-tolerant flexible supercapacitors: Gel polymer electrolytes and electrode materials
No full textThe development of flexible supercapacitors (FSCs) capable of operating at high temperatures is crucial for expanding the application areas and operating conditions of supercapacitors. Gel polymer electrolytes and electrode materials stand as two key components that significantly impact the efficacy of high- temperature-tolerant FSCs (HT-FSCs). They should not only exhibit high electrochemical performance and excellent flexibility, but also withstand intense thermal stress. Considerable efforts have been devoted to enhancing their thermal stability while maintaining high electrochemical and mechanical performance. In this review, the fundamentals of HT-FSCs are outlined. A comprehensive overview of state-of-the-art progress and achievements in HT-FSCs, with a focus on thermally stable gel polymer electrolytes and electrode materials is provided. Finally, challenges and future perspectives regarding HT-FSCs are discussed, alongside strategies for elevating operational temperatures and performance. This review offers both theoretical foundations and practical guidelines for designing and manufacturing HT-FSCs, further promoting their widespread adoption across diverse fields. (c) 2024 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights are reserved, including those for text and data mining, AI training, and similar technologies.S. Yu likes to acknowledge the financial supports from Fundamental Research Funds for the Central Universities of China(Grant No. SWU-KT22030) and Scientific and Technological Research Program of Chongqing Municipal Education Commission of China (No. KJQN202300205). N.Y. thanks the financial support from the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under the project of 457444676
Boron-doped diamond decorated with metal-organic framework-derived compounds for high-voltage aqueous asymmetric supercapacitors
No full textConductive diamond has been recognized as a promising electrode material for supercapacitors due to its excellent stability and broad electrochemical potential window. To enhance the performance of diamond-based supercapacitors, this study focuses on two key strategies: incorporating redox-active species on the electrodes and/or in the electrolytes to increase the capacitance, and constructing asymmetric supercapacitors to expand the operating voltage range. In this context, pseudocapacitive Co3O4@boron doped diamond (BDD) and Bi-Bi2O3@BDD were synthesized using metal-organic framework (MOF) decorated BDD of Co-MOF@BDD and Bi-MOF@BDD as precursor materials, respectively. An aqueous asymmetric supercapacitor was then assembled using a pseudocapacitive electrode/redox electrolyte system of Co3O4@BDD | 3.0 M KOH+0.05 M K3Fe(CN)6/K4Fe(CN)6 as the positive compartment, and Bi-Bi2O3@BDD | 3.0 M KOH as the negative compartment. The resulting device demonstrated a wide operating voltage of 1.7 V, a maximal energy density of 10.0 Wh L-1 at a power density of 333.2 W L-1. The remarkable performance can be attributed to the Faradaic redox reactions involving [Fe(CN)6]3-/4-, Co3+/Co4+, Bi0/Bi2+/Bi3+ in the electrode materials and electrolytes. This work presents a novel way for fabricating aqueous supercapacitors with high voltage, high energy and power densities, offering significant potential for various energy storage applications
RETRACTED ARTICLE: Lycium barbarum polysaccharide alleviates oxygen glucose deprivation-induced PC-12 cells damage by up-regulating miR-24
No full textWe, the Editors and Publisher of the journal Artificial Cells, Nanomedicine, and Biotechnology, have retracted the following article:Shiqing Song, Faliang Lin, Pengyan Zhu, Changyan Wu, Shuling Zhao, Qiao Han & Xiaomei Li (2019) Lycium barbarum polysaccharide alleviates oxygen glucose deprivation-induced PC-12 cells damage by up-regulating miR-24. Artificial Cells, Nanomedicine, and Biotechnology, 47(1), 3994–4000, DOI: 10.1080/21691401.2019.1673767Since publication, concerns have been raised about the integrity of the data in the article. When approached for an explanation, the authors have been unable to verify their original data. We also have concerns regarding the integrity of the authorship, as one author has stated they did not consent to being listed as an author. We are therefore retracting this article and the corresponding author listed in this publication have been informed.We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions.The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as ‘Retracted’
Some moderators of the effects of framing on purchase intentions and buying decisions
No full textThe main purpose of this study is to examine whether the effects of framing on purchase intentions and buying decisions are moderated by prior knowledge and experience and perceived value of the offer. It has been suggested that the way that information is framed will affect consumer choice by giving an external reference point. Information framed as a loss would have a greater impact than the same information framed as a gain. However, prior knowledge and experience influence consumer judgment and decision making via the function of an established reference point. Due to the use of different reference points, framing might not fully affect consumers\u27 concepts of what constitutes gains and losses. Perceived value of the offer might mitigate the effects of framing. It is hypothesized that, compared to experts, novices will be more influenced by the presence of framing and by loss framing. It is also postulated that when perceived value of the offer is high, consumers will be more affected by the presence of framing and by the loss framing. Furthermore, compared to other groups, novices who perceive the value of the offer as high are expected to be most influenced by framing. To test the hypotheses, a 3 x 2 x 2 between-subjects design is employed. Two products, personal computer and camera, are used for replication. Three print advertisements with different framing (gain, loss, no framing) for each product are randomly given to college students. The two major findings of this study are: first, there is a significant effect of the presence of framing on purchase intentions; however, it is moderated by prior knowledge and experience and by perceived value of the offer. Compared to experts, novices are more influenced by the presence of the framing. Furthermore, the presence of the framing is effective only when perceived value of the offer is high. Second, contrary to predictions, loss framing does not have a stronger effect on purchase intentions than does gain framing. The effects of framing are not as robust as suggested by Kahneman and Tversky
MEASURING THE ANTECEDENT EFFECTS OF SERVICE COGNITION AND INTERNET SHOPPING ANXIETY ON CONSUMER SATISFACTION WITH E-TAILING SERVICE
No full textInternet shopping anxiety (ISA), or the negative emotion that results from an individual’s experiences with online shopping in particular, is an important factor to explain the consumer’s emotion in ecommerce usage experience, such as e-tailing service usage experience. In this study, we introduce Internet shopping anxiety (ISA) as a new factor that reflect the consumer’s emotion in e-tailing service usage. We explore and empirically validate the relationships among Internet shopping anxiety, perceived risk and consumer satisfaction under the online retailing context. This study surveyed and collected the responses of 239 survey participants with online shopping experience. The results indicated that E-tailing service quality and trust in website have significant negative effects on Internet shopping anxiety. Further, the results showed that Internet shopping anxiety have a significant positive effect on perceived risk. Finally, perceived risk is found to have a significant negative effect on consumers’ satisfaction.consumer satisfaction, e-tailing service, internet shopping anxiety.
Buying while expecting to sell: The economic psychology of online resale
No full textConsumer online resale is becoming increasingly common for transactions of secondhand goods. However, when accompanied by a preconceived intention to resell a product after using it, the initial consumer purchasing decision for self-use is complicated by the estimated resale value of that good. We applied the principles of mental accounting to develop and evaluate a new concept that may influence consumer resale and purchase intention: external resale reference price (ERRP). The study examines how online consumer sellers' economic psychology of buying affected their expectation of future online resale outcome. The results indicate that (1) consumers' awareness of future online resale potential can influence their purchasing decisions; (2) ERRP, which is mediated by the estimated resale return, can increase purchase intention; and (3) the effects of ERRP on purchase intention are moderated by online resale likelihood, but are minimal when consumers are aware that resale possibility is extremely low.Consumer online resale C2C e-commerce Mental accounting Resale reference price
A Taxonomy of Consumer Resale Behavior in Consumer-to-Consumer(C2C) E-commerce: An Exploratory Study in Taiwan
No full textThis article draws on a phenomenological study of consumer resale behavior in consumer-to-consumer (C2C) e-commerce. We developed a taxonomy to describe consumer online resale behavior using the dimensions of ―planned‖ or ―unplanned resell‖ and ―used‖ or ―unused products‖ in order to examine the relationship between consumers’ reselling and purchasing behavior. We named the four consumer resale types as 1) resale of extra purchase, 2) resale after temporary ownership, 3) unintentional resale, and 4) disposition. Further, we implemented consumer interviews to empirically examine our taxonomy. Three major implications are derived. Firstly, consumer resale behavior influences consumers’ purchasing decisions. Secondly, consumer unsatisfied resale experience would damage brand image and decrease consumers’ willingness to repurchase. Finally, the motivations and behavior of consumer resale behavior are multidimensional
Mental Account Matters in Planning C2C On-Line Resale: the Influnece of Endowment Effect
No full textA model of acceptance of augmented-reality interactive technology: the moderating role of cognitive innovativeness
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