Graphene-Boosted, High-Performance Aqueous Zn-Ion Battery

• DOI: 10.1021/acsami.8b07781
• Publication Date: 2018-07-06T16:16:34Z
• Authors: Chao Shen; Xin Li; Nan Li; Keyu Xie; Jian-gan Wang; Xingrui Liu; Bingqing Wei
• Keywords: Power density; Energy density

Given their low cost and eco-friendliness, rechargeable Zn-ion batteries (ZIBs) have received increasing attention as a device with great potential for large-scale energy storage. However, the development of ZIBs high capacities long lifespans is challenging because dendritic growth Zn absence suitable cathode materials. Herein, we report novel aqueous battery (AZIB) that consist coated reduced graphene oxide anode V3O7·H2O/rGO composite cathode. The new AZIB exhibits excellent cycle stability capacity retention 79% after 1000 cycles. Moreover, it can deliver power density 8400 W kg–1 at 77 h 186 216 kg–1, former higher than those previously reported AZIBs. Our work provides perspective in developing would greatly accelerate practical applications ZIBs.