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Title: Architecting a stable high-energy aqueous Al-ion battery
Authors: Yan, Chunshuang
Lv, Chade
Wang, Liguang
Cui, Wei
Zhang, Leyuan
Dinh, Khang Ngoc
Tan, Huiteng
Wu, Chen
Wu, Tianpin
Ren, Yang
Chen, Jieqiong
Liu, Zheng
Srinivasan, Madhavi
Rui, Xianhong
Yan, Qingyu
Yu, Guihua
Keywords: Engineering::Materials::Energy materials
Issue Date: 2020
Source: Yan, C., Lv, C., Wang, L., Cui, W., Zhang, L., Dinh, K. N., ... Yu, G. (2020). Architecting a stable high-energy aqueous Al-ion battery. Journal of the American Chemical Society, 142(36), 15295-15304. doi:10.1021/jacs.0c05054
Journal: Journal of the American Chemical Society
Abstract: Aqueous Al-ion batteries (AAIBs) are the subject of great interest due to the inherent safety and high theoretical capacity of aluminum. The high abundancy and easy accessibility of aluminum raw materials further make AAIBs appealing for grid-scale energy storage. However, the passivating oxide film formation and hydrogen side reactions at the aluminum anode as well as limited availability of the cathode lead to low discharge voltage and poor cycling stability. Here, we proposed a new AAIB system consisting of an Al x MnO2 cathode, a zinc substrate-supported Zn-Al alloy anode, and an Al(OTF)3 aqueous electrolyte. Through the in situ electrochemical activation of MnO, the cathode was synthesized to incorporate a two-electron reaction, thus enabling its high theoretical capacity. The anode was realized by a simple deposition process of Al3+ onto Zn foil substrate. The featured alloy interface layer can effectively alleviate the passivation and suppress the dendrite growth, ensuring ultralong-term stable aluminum stripping/plating. The architected cell delivers a record-high discharge voltage plateau near 1.6 V and specific capacity of 460 mAh g-1 for over 80 cycles. This work provides new opportunities for the development of high-performance and low-cost AAIBs for practical applications.
ISSN: 1520-5126
DOI: 10.1021/jacs.0c05054
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of the American Chemical Society, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Fulltext Permission: embargo_20210916
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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