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Zhang, Wenyao; Dong, Muyao; Jiang, Keren; Yang, Diling; Tan, Xuehai; Zhai, Shengli; Feng, Renfei; Chen, Ning; King, Graham; Zhang, Hao; Zeng, Hongbo; Li, Hui; Antonietti, Markus; Li, Zhi
Nature communications, 09/2022, Letnik: 13, Številka: 1Journal Article
Abstract Aqueous zinc (Zn) chemistry features intrinsic safety, but suffers from severe irreversibility, as exemplified by low Coulombic efficiency, sustained water consumption and dendrite growth, which hampers practical applications of rechargeable Zn batteries. Herein, we report a highly reversible aqueous Zn battery in which the graphitic carbon nitride quantum dots additive serves as fast colloid ion carriers and assists the construction of a dynamic & self-repairing protective interphase. This real-time assembled interphase enables an ion-sieving effect and is found actively regenerate in each battery cycle, in effect endowing the system with single Zn 2+ conduction and constant conformal integrality, executing timely adaption of Zn deposition, thus retaining sustainable long-term protective effect. In consequence, dendrite-free Zn plating/stripping at ~99.6% Coulombic efficiency for 200 cycles, steady charge-discharge for 1200 h, and impressive cyclability (61.2% retention for 500 cycles in a Zn | |MnO 2 full battery, 73.2% retention for 500 cycles in a Zn | |V 2 O 5 full battery and 93.5% retention for 3000 cycles in a Zn | |VOPO 4 full battery) are achieved, which defines a general pathway to challenge Lithium in all low-cost, large-scale applications.
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in: SICRIS
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