Scalable Spray Drying Production of Amorphous V2O5–EGO 2D Heterostructured Xerogels for High-Rate and High-Capacity Aqueous Zinc Ion Batteries
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Qin, Jiadong
Batmunkh, Munkhbayar
Li, Wei
Fu, Huaiqin
Wang, Liang
Al‐Mamun, Mohammad
Qi, Dongchen
Liu, Porun
Zhang, Shanqing
Zhong, Yu Lin
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Abstract
Rechargeable aqueous zinc-ion batteries (ZIBs) are promising in stationary grid energy storage due to their advantages in safety and cost-effectiveness, and the search for competent cathode materials is one core task in the development of ZIBs. Herein, the authors design a 2D heterostructure combining amorphous vanadium pentoxide and electrochemically produced graphene oxide (EGO) using a fast and scalable spray drying technique. The unique 2D heterostructured xerogel is achieved by controlling the concentration of EGO in the precursor solution. Driven by the improved electrochemical kinetics, the resultant xerogel can deliver an excellent rate capability (334 mAh g−1 at 5 A g−1) as well as a high specific capacity (462 mAh g−1 at 0.2 A g−1) as the cathode material in ZIB. It is also shown that the coin cell constructed based on spray-dried xerogel can output steady, high energy densities over a broad power density window. This work provides a scalable and cost-effective approach for making high performance electrode materials from cheap sources through existing industrialized materials processing.
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© 2022 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the peer reviewed version of the following article: Scalable Spray Drying Production of Amorphous V2O5–EGO 2D Heterostructured Xerogels for High-Rate and High-Capacity Aqueous Zinc Ion Batteries, Small, pp. 2105761, which has been published in final form at https://doi.org/10.1002/smll.202105761. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
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Electrochemical energy storage and conversion
Inorganic materials (incl. nanomaterials)
Composite and hybrid materials
Electrochemistry
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Zhang, Y; Qin, J; Batmunkh, M; Li, W; Fu, H; Wang, L; Al‐Mamun, M; Qi, D; Liu, P; Zhang, S; Zhong, YL, Scalable Spray Drying Production of Amorphous V2O5–EGO 2D Heterostructured Xerogels for High-Rate and High-Capacity Aqueous Zinc Ion Batteries, Small, pp. 2105761