Guanxiang Zhang

All organic PVDF-based polymer composite for capacitive energy storage engineered via structural evolution

Hanxiao Gao, Chenyi Li, Guanxiang Zhang, Yutie Gong et autres

Poly(vinylidene fluoride)-based ferroelectric polymers with high dielectric constant can be harnessed for high-energy-density capacitors with fast discharge rates. However, notable losses arising from ferroelectricity and conductivity dramatically deteriorate charge-discharge efficiency, which is the central bottleneck for practical use of poly(vinylidene fluoride)-based polymers …

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Information sharing strategies and the optimization of supply chain management in multi-platform e-commerce markets

Guanxiang Zhang, Feng Lan, Jiaying Wu, Haidong Huang et autres

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Combined Vibrio and nanoplastics stress promotes nanoplastic accumulation while reducing bacterial lethality in shrimp

Riying Zhong, Xilin Fang, Changwen Li, Boyuan Zheng et autres

Nanoplastics (NPs) and pathogenic bacteria are widely present in natural water, yet their interactive effects on aquatic organisms remain poorly understood. In this study, we demonstrate for the first time that Vibrio parahaemolyticus can extensively capture free NPs and facilitate their translocation …

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Superior Charge‐Discharge Performances in High‐Entropy Polymers

Chenyi Li, Hanxiao Gao, Guanxiang Zhang, Yutie Gong et autres

Abstract Polarization and depolarization in response to an external electric field describe the charge and discharge behavior of dielectric materials characterized by high power densities, large discharged energy densities, and fast discharged rates, which finds wide applications in modern electrical and electronic …

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High Energy Storage of Polymer Blend at Elevated Temperature

Guanxiang Zhang, Junyong Lu, Bofeng Zhu, Tao Ma et autres

Abstract The capacitive energy storage of polymer dielectrics degrades significantly at high temperatures mainly due to dramatically enhanced conduction. To enable enhanced dielectric energy storage at elevated temperature, a blend strategy is developed here using polyimide/ polycarbonate (PI‐PC) with various PI content. …

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Structural, dielectric and mechanical changes in BOPP films under different thermal aging conditions

Guanxiang Zhang, Junyong Lu, Bofeng Zhu, Tao Ma et autres

Polymer film capacitors are widely used in power electronics, automotive, petroleum, and other applications due to their high breakdown voltage, low loss, and high reliability. The thermal aging mechanism of dielectric polymer BOPP is crucial for the exploration of application boundaries in …

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Investigation of Transient Thermal Behavior in Thyristors Under Pulse Conditions

Guanxiang Zhang, Xiao Zhang, Junyong Lu, Yufeng Dai et autres

Under pulsed discharge conditions, high-power thyristors face challenges such as an excessively high current rise rate (di/dt) and the issue of triggering front expansion, which are difficult to accurately simulate. Traditional modeling approaches often neglect the non-uniform distribution and expansion process of …

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Significantly Enhancing the Energy‐Storage Properties of Polypropylene Films by Physically Manipulating Their Permittivity and Crystalline Behavior with Polar Organic Molecules

Dong Ma, Guanxiang Zhang, Sen Meng, Runze Zhang et autres

Abstract To meet the increasing demands of modern power electronics for high‐temperature resistance and energy storage performance and avoid the trade‐off between high energy storage (Ue) performance and prominent processability, a strategy to modify polypropylene (PP) by introducing polar electron‐deficient 8‐hydroxyquinoline (8‐HQ) …

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Overcoming Energy Storage‐Loss Trade‐Offs in Polymer Dielectrics Through the Synergistic Tuning of Electronic Effects in π ‐Conjugated Polystyrenes

Yipin Cheng, Honghong Gong, Meirong Zhang, Qinglong Ji et autres

Abstract Achieving high‐performance dielectric materials remains a significant challenge due to the inherent trade‐offs between high energy storage density and low energy loss. A central difficulty lies in identifying a suitable dipolar unit that can enhance the polarity and dielectric constant of …

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Effects of the buy-online-and-assemble-in-store approach: Implications for firms, consumers, and environment

Guanxiang Zhang, Xiangzhen Meng, Lipan Feng, Qi Kou

The buy-online-and-assemble-in-store (BOAS) approach has been implemented by different contemporary firms (i.e. IKEA and TUHU); however, the implications of BOAS for firms, consumers, and environment remain unclear. To fill this gap, this study considers a monopolistic firm selling products that require consumers’ …

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Pricing and duration decisions of pre-sale crowdfunding

Guanxiang Zhang, Kexuan Zhai, Hui Li

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One-step fabrication of high energy storage polymer films with a wide bandgap and high melting temperature induced by the fluorine effect for high temperature capacitor applications with ultra-high efficiency

Jie Xiong, Guanxiang Zhang, Shaobo Tan, Honghong Gong et autres

at charge-discharge efficiency exceeding 90%. This work provides a new idea for the design and synthesis of all-organic polymer dielectric films for high temperature applications.

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