Progressive activation of porous vanadium nitride microspheres with intercalation-conversion reactions toward high performance over a wide temperature range for zinc-ion batteries

Yuan, Ziyan; Yang, Xinghua; Lin, Chuyuan; Su, Anmin; Fang, Yixing; Chen, Xiaochuan; Fan, Haosen; Xiao, Fuyu; Mao, Wei; Qian, Qingrong; Chen, Qinghua; Ling, Zeng

doi:10.1016/j.jcis.2023.02.112

Cited by 14 publications

(2 citation statements)

References 75 publications

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“…The freezing point decreased with the increase of DMF addition, indicating that DMF disrupts the hydrogen bonds between water molecules. [78,79] Fourier in-frared (FTIR) spectrums in Figure 6c shown that the addition of DMF caused a shift in the position of hydrogen bonding. The result of binding energy calculations in Figure 6d revealed that the binding energy between DMF-H 2 O (−20.66 kJ mol −1 ) and PAM-H 2 O (−21.12 kJ mol −1 ) is lower than that of H 2 O-H 2 O (−15.78 kJ mol −1 ), indicating that water molecules in the synthesized PZD-20% and PZD-30% tend to associate with DMF and PAM, thus the synergistic effect of DMF and PAM further lowered the freezing point of the aqueous solution.…”

Section: Resultsmentioning

confidence: 99%

A Hydrogel Electrolyte with High Adaptability over a Wide Temperature Range and Mechanical Stress for Long‐Life Flexible Zinc‐Ion Batteries

Zhang,

Lin,

Zeng

et al. 2024

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Flexible zinc‐ion batteries have garnered significant attention in the realm of wearable technology. However, the instability of hydrogel electrolytes in a wide‐temperature range and uncontrollable side reactions of the Zn electrode have become the main problems for practical applications. Herein, N,N‐dimethylformamide (DMF) to design a binary solvent (H2O‐DMF) is introduced and combined it with polyacrylamide (PAM) and ZnSO4 to synthesize a hydrogel electrolyte (denoted as PZD). The synergistic effect of DMF and PAM not only guides Zn2+ deposition on Zn(002) crystal plane and isolates H2O from the Zn anode, but also breaks the hydrogen bonding network between water to improve the wide‐temperature range stability of hydrogel electrolytes. Consequently, the symmetric cell utilizing PZD can stably cycle over 5600 h at 0.5 mA cm−2@0.5 mAh cm−2. Furthermore, the Zn//PZD//MnO2 full cell exhibits favorable wide‐temperature range adaptability (for 16000 cycles at 3 A g−1 under 25 °C, 750 cycles with 98 mAh g−1 at 0.1 A g−1 under ‐20 °C) and outstanding mechanical properties (for lighting up the LEDs under conditions of pressure, bending, cutting, and puncture). This work proposes a useful modification for designing a high‐performance hydrogel electrolyte, which provides a reference for investigating the practical flexible aqueous batteries.

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Section: Resultsmentioning

confidence: 99%

A Hydrogel Electrolyte with High Adaptability over a Wide Temperature Range and Mechanical Stress for Long‐Life Flexible Zinc‐Ion Batteries

Zhang,

Lin,

Zeng

et al. 2024

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“…materials [135][136][137][138][139]. Therefore, it is necessary to consider the effect of the cathode on the electrolyte in the design of a suitable electrolyte or when evaluating the performance of the cell at high temperatures.…”

Section: Hydrogels Electrolytesmentioning

confidence: 99%

Progress in Electrolyte Engineering of Aqueous Batteries in a Wide Temperature Range

He,

Lin,

Xiong

et al. 2023

Trans. Tianjin Univ.

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Aqueous rechargeable batteries are safe and environmentally friendly and can be made at a low cost; as such, they are attracting attention in the field of energy storage. However, the temperature sensitivity of aqueous batteries hinders their practical application. The solvent water freezes at low temperatures, and there is a reduction in ionic conductivity, whereas it evaporates rapidly at high temperatures, which causes increased side reactions. This review discusses recent progress in improving the performance of aqueous batteries, mainly with respect to electrolyte engineering and the associated strategies employed to achieve such improvements over a wide temperature domain. The review focuses on five electrolyte engineering (aqueous high-concentration electrolytes, organic electrolytes, quasi-solid/solid electrolytes, hybrid electrolytes, and eutectic electrolytes) and investigates the mechanisms involved in reducing the solidification point and boiling point of the electrolyte and enhancing the extreme-temperature electrochemical performance. Finally, the prospect of further improving the wide temperature range performance of aqueous rechargeable batteries is presented.

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Developing an in Situ Polyoxovanadate to Vanadium Nitride/Carbon Conversion Strategies in Manufacture Aqueous Zinc Ion Batteries Cathode with Ultrahigh Rate Capability

Bian,

Hu,

Wang

et al. 2024

Adv Funct Materials

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Vanadium nitride (VN) is considered to have sufficient application potential for energy storage, and in the field of aqueous zinc‐ion batteries (AZIBs), its unique in situ phase transition mechanism is conducive to solving the intrinsic low conductivity, slow kinetics, and poor cycling stability of vanadium‐based materials. In the present study, the nanoscale morphology of VN cathode materials is controlled by cationic modulation of decavanadate precursors. Among them, VN quantum dots/nitrogen‐doped carbon nanosheets (VNQD/NC), which have the prime particle size and uniform distribution on a carbon substrate, show excellent cathode performance after activation. The innovative VNQD/NC composite exhibits high discharge capacity (698 mAh g−1 at 0.5 A g−1), excellent rate performance (498 mAh g−1 at 20 A g−1), and excellent stability. The mechanism of the VNQD/NC cathode is investigated by various ex situ means, and researchers actively analyze the source of its excellent electrochemical performance. This work offers an alternative strategy for the preparation of nitride materials and provides insights into the development of high‐performance vanadium‐based cathodes for AZIBs.

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Progressive activation of porous vanadium nitride microspheres with intercalation-conversion reactions toward high performance over a wide temperature range for zinc-ion batteries

Cited by 14 publications

References 75 publications

A Hydrogel Electrolyte with High Adaptability over a Wide Temperature Range and Mechanical Stress for Long‐Life Flexible Zinc‐Ion Batteries

A Hydrogel Electrolyte with High Adaptability over a Wide Temperature Range and Mechanical Stress for Long‐Life Flexible Zinc‐Ion Batteries

Progress in Electrolyte Engineering of Aqueous Batteries in a Wide Temperature Range

Developing an in Situ Polyoxovanadate to Vanadium Nitride/Carbon Conversion Strategies in Manufacture Aqueous Zinc Ion Batteries Cathode with Ultrahigh Rate Capability

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