锌
电解质
阳离子聚合
木质素
电池(电)
电化学
材料科学
牛皮纸
水溶液
无机化学
化学工程
化学
电极
有机化学
功率(物理)
物理化学
工程类
物理
量子力学
作者
Jingliang Xu,Ming-Hai Wang,Md. Asraful Alam,Tuan K.A. Hoang,Yanru Zhang,Hui Li,Yongkun Lv,Anqi Zhao,Wenlong Xiong
出处
期刊:Fuel
[Elsevier]
日期:2023-02-01
卷期号:333: 126450-126450
被引量:2
标识
DOI:10.1016/j.fuel.2022.126450
摘要
• A novel lignin-based electrolyte additive—QL 80 was designed for zinc-ion batteries. • The reversibility of zinc operated in the QL 80 modified electrolyte was improved. • When the dosage of QL 80 was 1 wt%, the overall performance of battery was the best. Rechargeable Zn//MnO 2 batteries, the most widely studied aqueous zinc-ion batteries, suffer from poor electrochemical performance due to a series of issues on the zinc anode including corrosion, dendrites, and passivation. In this study, abundant and low-cost kraft lignin is used as a raw material to synthesize quaternized lignin (QL 80 ), which is upgraded to an electrolyte additive for the Zn//α-MnO 2 battery (ReZMB). According to corrosion and chronoamperometry tests, the electrolyte containing 1 wt% of the QL 80 (named as 1 % QL 80 ) has the lowest corrosion on the zinc electrode and is best able to promote the homogenous zinc deposition. Consequently, the ReZMB using the 1 % QL 80 records the highest open-circuit voltage after storage at full charge state and the optimal rate capability, and meanwhile, the Zn//Zn symmetric battery exhibits an extended lifespan of 200 h at 5 mA·cm −2 , 5 mAh·cm −2 . In addition, the passivation of the zinc anode is highly prevented because no byproducts appear on the zinc anode of the ReZMB with 3000 cycles at 1.5 A·g −1 , according to the results of XRD and SEM characterizations. Ultimately, the ReZMB using the 1 % QL 80 presents more outstanding cyclability (more stable operation and ∼74.5 % higher discharge capacity after 3000 cycles at 1.5 A·g −1 ) than that of the battery using the reference electrolyte (2 M ZnSO 4 + 0.2 M MnSO 4 ). This study paves the new way for designing green lignin-derived electrolyte additives for advanced rechargeable zinc-ion batteries.
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