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Robust and Wide Temperature-Range Zinc Metal Batteries with Unique Electrolyte and Substrate Design

Angewandte Chemie 2023年第28期135卷

作者： Chunlin Xie Shengfang Liu Wenxu Zhang Huimin Ji Shengqi Chu Qi Zhang Yougen Tang Haiyan Wang Hunan Provincial Key Laboratory of Chemical Power Sources College of Chemistry and Chemical Engineering Central South University Changsha 410083 P.R. China Contribution: Conceptualization (lead) Data curation (lead) Formal analysis (lead) Investigation (lead) Methodology (lead) Writing - original draft (lead) College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070 China Contribution: Conceptualization (equal) Data curation (lead) Investigation (lead) Methodology (equal) Writing - original draft (equal) Contribution: Project administration (equal) Resources (equal) Contribution: Formal analysis (equal) Investigation (equal) Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China Contribution: Methodology (equal) Resources (equal) Software (equal) Contribution: Resources (lead) Software (lead) Writing - review & editing (lead) Contribution: Resources (lead)

Rechargeable zinc metal batteries are promising for large-scale energy storage. However, their practical application is limited by harsh issues such as uncontrollable dendrite growth, low Coulombic efficiency, and poor temperature tolerance. Herein, a unique design strategy using γ-valerolactone-based electrolyte and nanocarbon-coated aluminum substrate was reported to solve the above problems. The electrolyte with extremely low freezing point and high thermal stability enables the symmetric cells with long cycle life over a wide temperature range (−50 °C to 80 °C) due to its ability to regulate zinc nucleation and preferential epitaxial growth. Besides, the nanocarbon-coated aluminum substrate can also promote a higher Coulombic efficiency over a wide temperature range in contrast to the low Coulombic efficiency of copper substrates with significant irreversible alloying reactions because this unique substrate with excellent chemical stabilization can homogenize the interfacial electron/ion distribution. The optimized zinc metal capacitors can operate stably under various temperature conditions (2000 cycles at 30 °C with 66 % depth of discharge and 1200 cycles at 80 °C with 50 % depth of discharge). This unique electrolyte and substrate design strategy achieves a robust zinc metal battery over a wide temperature range.

关键词： Electrolyte Substrate Weak Solvent Structure Wide Temperature Range Zinc Metal Anode

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A Universal Molten Salt Method for Direct Upcycling of Spent Ni-rich Cathode towards Single-crystalline Li-rich Cathode

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Angewandte Chemie 2023年第25期135卷

作者： Zuoyu Qin Dr. Ying Zhang Wuqing Luo Tao Zhang Tao Wang Lianshan Ni Haoji Wang Prof. Ning Zhang Prof. Xiaohe Liu Jiang Zhou Prof. Gen Chen School of Materials Science and Engineering Hunan Provincial Key Laboratory of Electronic Packaging and Advanced Functional Materials Central South University 410083 Changsha Hunan P. R. China Contribution: Conceptualization (equal) Data curation (lead) Formal analysis (lead) Investigation (equal) Writing - original draft (lead) Zhongyuan Critical Metals Laboratory and School of Chemical Engineering Zhengzhou University 450001 Zhengzhou Henan P. R. China Contribution: Investigation (supporting) Visualization (lead) Writing - review & editing (equal) Contribution: Validation (lead) Contribution: Investigation (supporting) Resources (lead) Visualization (supporting) School of Metallurgy and Environment Central South University 410083 Changsha Hunan P. R. China Contribution: Investigation (supporting) Writing - review & editing (supporting) College of Chemistry and Chemical Engineering Central South University 410083 Changsha Hunan P. R. China Contribution: Formal analysis (supporting) Investigation (supporting) Contribution: Validation (supporting) Writing - review & editing (supporting) Contribution: Methodology (supporting) Writing - review & editing (supporting) Contribution: Project administration (supporting) Writing - review & editing (supporting) Contribution: Conceptualization (equal) Funding acquisition (equal) Investigation (lead) Project administration (supporting) Supervision (supporting) Writing - review & editing (lead) Contribution: Conceptualization (equal) Funding acquisition (lead) Investigation (equal) Project administration (lead) Supervision (lead)

With ever-increasing pursuit for high-value output in recycling spent lithium-ion batteries (LIBs), traditional recycling methods of cathodes tend to be obsolete because of the complicated procedures. Herein, we first upcycle spent polycrystal LiNi 0.88 Co 0.095 Al 0.025 O 2 (S-NCA) to high value-added single-crystalline and Li-rich cathode materials through a simple but feasible LiOH-Na 2 SO 4 eutectic molten salt strategy. The in situ X-ray diffraction technique and a series of paratactic experiments record the evolution process of upcycling and prove that excessive Li occupies the transition metal (TM) layers. Beneficial from the single-crystalline and Li-rich nature, the regenerated NCA (R-NCA) exhibits remarkably enhanced electrochemical performances in terms of long-term cyclability, high-rate performance and low polarization. This approach can also be successfully extended to other cathode materials e.g., LiNi x Co y Mn z O 2 (NCM) and mixed spent NCAs with varied degree of Li loss.

关键词： Li-Rich Cathode Single-Crystalline Spent LiNi0.88Co0.095Al0.025O2 Upcycling

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Zincophilic Electrode Interphase with Appended Proton Reservoir Ability Stabilizes Zn Metal Anodes

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Angewandte Chemie 2022年第5期135卷

作者： Zhenyue Xing Yanyan Sun Xuesong Xie Yan Tang Prof. Guofu Xu Prof. Junwei Han Prof. Bingan Lu Prof. Shuquan Liang Ass. Prof. Gen Chen Prof. Jiang Zhou School of Materials Science and Engineering Hunan Provincial Key Laboratory of Electronic Packaging and Advanced Functional Materials Central South University Changsha Hunan 410083 P. R. China Contribution: Conceptualization (equal) Data curation (lead) Formal analysis (lead) Investigation (lead) Writing - original draft (lead) Contribution: Formal analysis (equal) Investigation (supporting) Writing - review & editing (equal) Contribution: Conceptualization (supporting) Investigation (supporting) Contribution: Writing - review & editing (supporting) Contribution: Supervision (supporting) Writing - review & editing (supporting) School of Minerals Processing and Bioengineering Central South University Changsha Hunan 410083 P. R. China Contribution: Funding acquisition (equal) Validation (lead) Writing - review & editing (supporting) School of Physics and Electronics Hunan University Changsha Hunan 410082 P. R. China Contribution: Investigation (supporting) Writing - review & editing (supporting) Contribution: Project administration (supporting) Writing - review & editing (supporting) Contribution: Formal analysis (equal) Investigation (equal) Project administration (equal) Writing - review & editing (equal) College of Chemistry and Chemical Engineering Jishou University Jishou Hunan 416000 P. R. China Contribution: Conceptualization (lead) Funding acquisition (lead) Investigation (equal) Project administration (lead) Supervision (lead) Writing - review & editing (lead)

The rampant dendrites and hydrogen evolution reaction (HER) resulting from the turbulent interfacial evolution at the anode/electrolyte are the main culprits of short lifespan and low Coulombic efficiency of Zn metal batteries. In this work, a versatile protective coating with excellent zincophilic and amphoteric features is constructed on the surface of Zn metal (ZP@Zn) as dendrite-free anodes. This kind of protective coating possesses the advantages of reversible proton storage and rapid desolvation kinetics, thereby mitigating the HER and facilitating homogeneous nucleation concomitantly. Furthermore, the space charge polarization effect promotes charge redistribution to achieve uniform Zn deposition. Accordingly, the ZP@Zn symmetric cell manifests excellent reversibility at an ultrahigh cumulative plating capacity of 4700 mAh cm −2 and stable cycling at 80 % depth of discharge (DOD). The ZP@Zn//V 6 O 13 pouch cell also reveals superior cycling stability with a high capacity of 326.6 mAh g −1 .

关键词： Amphoteric Group Aqueous Zn Ion Batteries Dendrite-Free Zn Anode Hydrogen Evolution Interfacial Modification

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New Exact Solutions of Kolmogorov Petrovskii Piskunov Equation, Fitzhugh Nagumo Equation, and Newell-Whitehead Equation

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Advances in Mathematical Physics 2020年第1期2020卷

作者： Chu, Yu-Ming Javeed, Shumaila Baleanu, Dumitru Riaz, Sidra Rezazadeh, Hadi Department of Mathematics Huzhou University Huzhou 313000 China Hunan Provincial Key Laboratory of Mathematical Modeling and Analysis in Engineering Changsha University of Science and Technology Changsha 410114 China Department of Mathematics Comsats University Islamabad Park Road Chak Shahzad Islamabad Pakistan Department of Mathematics Cankaya University Ankara Turkey Institute of Space Sciences Magurele-Bucharest Romania Department of Mathematics Riphah International University Sector I-14 Islamabad Pakistan Faculty of Engineering Technology Amol University of Special Modern Technologies Amol Iran

This work presents the new exact solutions of nonlinear partial differential equations (PDEs). The solutions are acquired by using an effectual approach, the first integral method (FIM). The suggested technique is implemented to obtain the solutions of space-time Kolmogorov Petrovskii Piskunov (KPP) equation and its derived equations, namely, Fitzhugh Nagumo (FHN) equation and Newell-Whitehead (NW) equation. The considered models are significant in biology. The KPP equation describes genetic model for spread of dominant gene through population. The FHN equation is imperative in the study of intercellular trigger waves. Similarly, the NW equation is applied for chemical reactions, Faraday instability, and Rayleigh-Benard convection. The proposed technique FIM can be applied to find the exact solutions of PDEs. © 2020 Yu-Ming Chu et al.

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Sensitive Hyaluronidase Biosensor Based on Target-Responsive Hydrogel Using Electronic Balance as Readout

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Analytical chemistry 2019年第18期91卷 11821-11826页

作者： Zhixin Li Caixi Tang Da Huang Wenjuan Qin Fang Luo Jian Wang Longhua Guo Bin Qiu Zhenyu Lin Ministry of Education Key Laboratory for Analytical Science of Food Safety and Biology Fujian Provincial Key Laboratory of Analysis and Detection for Food Safety College of Chemistry Fuzhou University Fuzhou Fujian 350116 China. Department of Hepatobiliary & Pancreatic Surgery Affiliated Zhuzhou Hospital Xiangya Medial College CSU Zhuzhou Hunan 412007 China. College of Biological Science and Engineering Fuzhou University Fuzhou Fujian 350116 China. Department of Radiation Oncology Zhongshan Hospital Affiliated Xiamen University Xiamen 361001 China.

The development of simple but sensitive methods for hyaluronidase (HAase) detection has been paid a great deal of attention because HAase is a potential cancer marker. In this work, a novel system coupled with a controlled release system has been designed for HAase determination without complex analytical instruments and skilled technicians. Pt@SiO nanoparticles (NPs), which can catalyze the breakdown of HO into O and HO, was embedded in the hydrogel constructed by polyethylenimine (PEI) and hyaluronic acid (HA). In the presence of HAase, the hydrogel was broken down as HAase can catalyze the degradation of HA and hence the Pt@SiO NPs in the hydrogel was released. The released Pt@SiO NPs mixed with HO solution in a drainage device, and then O was generated due to the decomposition of HO, resulting in an enhancement of pressure in the drainage device because of the low solubility of O. A certain amount of HO overflowed from the drainage device because the difference of the pressure between the inner and outer of the drainage device. The overflowed HO was collected by a tube, and its amount was easily measured by an electronic balance. The weight of the HO has a linear relationship with the HAase concentration in the range of 1-60 U/mL (120 min enzymatic hydrolysis time) and 0.2-10 U/mL (240 min enzymatic hydrolysis time). The developed system has been applied to detect the activity of HAase in urine samples with satisfied results.

关键词： Anatomy Sensors Polyethylenimine Biotechnology Hydrogels

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Chebyshev symplectic methods based on continuous-stage Runge-Kutta methods

arXiv

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arXiv 2018年

作者： Tang, Wensheng College of Mathematics and Statistics Changsha University of Science and Technology Changsha410114 China Hunan Provincial Key Laboratory of Mathematical Modeling and Analysis in Engineering Changsha410114 China

We develop Chebyshev symplectic methods based on Chebyshev orthogonal polynomials of the first and second kind separately in this paper. Such type of symplectic methods can be conveniently constructed with the newly-built theory of weighted continuous-stage Runge-Kutta methods. A few numerical experiments are well performed to verify the efficiency of our new methods. Copyright © 2018, The Authors. All rights reserved.

关键词： Runge Kutta methods

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Energy-preserving continuous-stage Runge-Kutta-Nyström methods

arXiv

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arXiv 2018年

Many practical problems can be described by second-order system q¨ = −M∇U(q), in which people give special emphasis to some invariants with explicit physical meaning, such as energy, momentum, angular momentum, etc. However, conventional numerical integrators for such systems will fail to preserve any of these quantities which may lead to qualitatively incorrect numerical solutions. This paper is concerned with the development of energy-preserving continuous-stage Runge-Kutta-Nyström (csRKN) methods for solving second-order systems. Sufficient conditions for csRKN methods to be energy-preserving are presented and it is proved that all the energy-preserving csRKN methods satisfying these sufficient conditions can be essentially induced by energy-preserving continuous-stage partitioned Runge-Kutta methods. Some illustrative examples are given and relevant numerical results are reported. Copyright © 2018, The Authors. All rights reserved.

关键词： Hamiltonians

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Energy-preserving continuous-stage partitioned Runge-Kutta methods

arXiv

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arXiv 2018年

作者： Tan, Wensheng College of Mathematics and Statistics Changsha University of Science and Technology Changsha410114 China Hunan Provincial Key Laboratory of Mathematical Modeling and Analysis in Engineering Changsha410114 China

In this paper, we present continuous-stage partitioned Runge-Kutta (csPRK) methods for energy-preserving integration of Hamiltonian systems. A sufficient condition for the energy preservation of the csPRK methods is derived. It is shown that the presented condition contains the existing condition for energy-preserving continuous-stage Runge-Kutta methods as a special case. A noticeable and interesting result is that when we use the simplifying assumptions of order conditions and the normalized shifted Legendre polynomials for constructing high-order energy-preserving csPRK methods, both the Butcher "weight" coefficients Bτ and Bbτ must be equal to 1. As illustrative examples, new energy-preserving integrators are acquired by virtue of the presented condition, and for the sake of verifying our theoretical results, some numerical experiments are reported. Copyright © 2018, The Authors. All rights reserved.

关键词： Runge Kutta methods

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Two types of variational integrators and their equivalence

arXiv

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arXiv 2018年

In this paper, we introduce two types of variational integrators, one originating from the discrete Hamilton’s principle while the other from Galerkin variational approach. It turns out that these variational integrators are equivalent to each other when they are used for integrating the classical mechanical system with Lagrangian function L(q,q) = 21qTMq−U(q) (M is an invertible symmetric constant matrix). They are symplectic, symmetric, possess super-convergence order 2s (which depends on the degree of the approximation polynomials), and can be related to continuous-stage partitioned Runge-Kutta methods. Copyright © 2018, The Authors. All rights reserved.

关键词： Galerkin methods

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Continuous-stage Runge-Kutta methods based on weighted orthogonal polynomials

arXiv

引用

arXiv 2018年

We develop continuous-stage Runge-Kutta methods based on weighted orthogonal polynomials in this paper. There are two main highlighted merits for developing such methods: Firstly, we do not need to study the tedious solution of multi-variable nonlinear algebraic equations associated with order conditions;Secondly, the well-known weighted interpolatory quadrature theory appeared in every numerical analysis textbook can be directly and conveniently used. By introducing weight function, various orthogonal polynomials can be used in the construction of Runge-Kutta-type methods. It turns out that new families of Runge-Kutta-type methods with special properties (e.g., symplectic, symmetric etc.) can be constructed in batches, and hopefully it may produce new applications in numerical ordinary differential equations. Copyright © 2018, The Authors. All rights reserved.

关键词： Runge Kutta methods

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