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23. Progress in Gel Polymer Electrolytes for Sodium‐Ion Batteries.

Author

Zheng, Jinyun, Li, Wenjie, Liu, Xinxin, Zhang, Jiawei, Feng, Xiangming, and Chen, Weihua

Subjects
POLYELECTROLYTES, POLYMER colloids, MECHANICAL drawing, SODIUM ions, PROGRESS, CONDUCTING polymers, ENERGY storage
Abstract

Sodium‐ion battery is a potential application system for large‐scale energy storage due to the advantage of higher nature abundance and lower production cost of sodium‐based materials. However, there exist inevitably the safety problems such as flammability due to the use of the same type of organic liquid electrolyte with lithium‐ion battery. Gel polymer electrolytes are being considered as an effective solution to replace conventional organic liquid electrolytes for building safer sodium‐ion batteries. In this review paper, the authors present a comprehensive overview of the research progress in electrochemical and physical properties of the gel polymer electrolyte‐based sodium batteries. The gel polymer electrolytes based on different polymer hosts namely poly(ethylene oxide), poly(acrylonitrile), poly(methyl methacrylate), poly(vinylidene fluoride), poly(vinylidene fluoride‐hexafluoro propylene), and other new polymer networks are summarized. The ionic conductivity, ion transference number, electrochemical window, thermal stability, mechanical property, and interfacial issue with electrodes of gel polymer electrolytes, and the corresponding influence factors are described in detail. Furthermore, the ion transport pathway and ion conduction mechanism are analyzed and discussed. In addition, the advanced gel polymer electrolyte systems including flame‐retardant polymer electrolytes, composite gel polymer electrolytes, copolymerization, single‐ion conducting polymer electrolytes, etc. with more superior and functional performance are classified and summarized. Finally, the application prospects, development opportunities, remaining challenges, and possible solutions are discussed. [ABSTRACT FROM AUTHOR]

Published
2023
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32. Construction of 3D architectures with Ni(HCO3)2 nanocubes wrapped by reduced graphene oxide for LIBs: ultrahigh capacity, ultrafast rate capability and ultralong cycle stability† †Electronic supplementary information (ESI) available: Experimental section, Scheme S1 the electrochemical process for two configurations of electrodes, SEM, TEM images, EDS, TG, XPS data, SEM images of Ni(HCO3)2/rGO, and Ni(HCO3)2 electrodes cycled after different cycles (SEI film), comparison and discussion of the mixed sample Ni(HCO3)2@rGO, and Table S1 (EIS data). See DOI: 10.1039/c8sc02868k

Author

Dong, Yutao, Ma, Yuhang, Li, Dan, Liu, Yushan, Chen, Weihua, Feng, Xiangming, and Zhang, Jianmin

Subjects
Chemistry
Abstract

A 3D layered Ni(HCO3)2/rGO nano-architecture was fabricated by coordination self-assembly for high performance storage of Li-ions with fast electrode kinetics and a super-long life., Rechargeable lithium-ion batteries (LIBs) have been the dominating technology for electric vehicles (EV) and grid storage in the current era, but they are still extensively demanded to further improve energy density, power density, and cycle life. Herein, a novel 3D layered nanoarchitecture network of Ni(HCO3)2/rGO composites with highly uniform Ni(HCO3)2 nanocubes (average diameter of 100 ± 20 nm) wrapped in rGO films is facilely fabricated by a one-step hydrothermal self-assembly process based on the electrostatic interaction and coordination principle. Benefiting from the synergistic effects, the Ni(HCO3)2/rGO electrode delivers an ultrahigh capacity (2450 mA h g–1 at 0.1 A g–1), ultrafast rate capability and ultralong cycling stability (1535 mA h g–1 for the 1000th cycle at 5 A g–1, 803 mA h g–1 for the 2000th cycle at 10 A g–1). The detailed electrochemical reaction mechanism investigated by in situ XRD further indicates that the 3D architecture of Ni(HCO3)2/rGO not only provides a good conductivity network and has a confinement effect on the rGO films, but also benefits from the reversible transfer from LiHCO3 to LixC2 (x = 0–2), further oxidation of nickel, and the formation of a stable/durable solid electrolyte interface (SEI) film (LiF and LiOH), which are responsible for the excellent storage performance of the Li-ions. This work could shed light on the design of high-capacity and low-cost anode materials for high energy storage in LIBs to meet the critical demands of EV and mobile information technology devices.

Published
2018

34. Ethylene Carbonate‐Free Propylene Carbonate‐Based Electrolytes with Excellent Electrochemical Compatibility for Li‐Ion Batteries through Engineering Electrolyte Solvation Structure

Author

Liu, Xingwei, primary, Shen, Xiaohui, additional, Li, Hui, additional, Li, Peng, additional, Luo, Laibing, additional, Fan, Haiman, additional, Feng, Xiangming, additional, Chen, Weihua, additional, Ai, Xinping, additional, Yang, Hanxi, additional, and Cao, Yuliang, additional

Published
2021
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49. Electrolytes for Dual‐Carbon Batteries

Author

Jiang, Xiaoyu, primary, Luo, Laibing, additional, Zhong, Faping, additional, Feng, Xiangming, additional, Chen, Weihua, additional, Ai, Xinping, additional, Yang, Hanxi, additional, and Cao, Yuliang, additional

Published
2019
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