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MnO2 Nanosheet-Assembled Hollow Polyhedron Grown on Carbon Cloth for Flexible Aqueous Zinc-Ion Batteries.
ChemSusChem ( IF 7.5 ) Pub Date : 2019-12-02 , DOI: 10.1002/cssc.201903006 Fangfang Wu 1 , Xiaobin Gao 1 , Xilian Xu 1 , Yani Jiang 1 , Xinlong Gao 1 , Ruilian Yin 1 , Wenhui Shi 2 , Wenxian Liu 1 , Gang Lu 3 , Xiehong Cao 1
ChemSusChem ( IF 7.5 ) Pub Date : 2019-12-02 , DOI: 10.1002/cssc.201903006 Fangfang Wu 1 , Xiaobin Gao 1 , Xilian Xu 1 , Yani Jiang 1 , Xinlong Gao 1 , Ruilian Yin 1 , Wenhui Shi 2 , Wenxian Liu 1 , Gang Lu 3 , Xiehong Cao 1
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Aqueous zinc-ion batteries (ZIBs) have been considered as prospective alternatives for lithium-ion batteries, which are able to serve as power sources for next-generation wearable and flexible devices, owing to the merits of abundant zinc resources and high safety of aqueous electrolyte. However, the lack of suitable cathode materials with flexibility for ZIBs hinders their further application. Herein, a novel cathode material [i.e., MnO2 nanosheet-assembled hollow polyhedron anchored on carbon cloth (MnO2 /CC)] was prepared through a rapid hydrothermal method by using ZIF-67 as self-sacrificing template. When tested in an aqueous ZIB, the MnO2 /CC delivered a high reversible capacity of 263.9 mAh g-1 at 1.0 A g-1 after 300 cycles, far exceeding those of the commercial MnO2 electrode. More importantly, benefiting from the unique structural advantages, a flexible ZIB assembled based on the MnO2 /CC displayed a stable output voltage of 1.53 V and a specific capacity of 91.7 mAh g-1 at 0.1 A g-1 after 30 cycles. It also successfully lit LED bulbs even under different bending angles, showing good flexibility. This research contributes to the development of MnO2 -based cathode materials for high-performance flexible ZIBs.
中文翻译：
碳布上生长的MnO2纳米片组装的空心多面体，用于柔性水性锌离子电池。
水性锌离子电池（ZIBs）被认为是锂离子电池的潜在替代品，由于锌资源丰富且水性高安全性的优点，它们可以用作下一代可穿戴和柔性设备的电源。电解质。但是，缺乏适合ZIB的具有柔性的阴极材料阻碍了它们的进一步应用。本文以ZIF-67为自牺牲模板，通过快速水热法制备了一种新型阴极材料[MnO2纳米片组装中空多面体锚固在碳布上（MnO2 / CC）]。当在ZIB水溶液中进行测试时，经过300次循环后，MnO2 / CC在1.0 A g-1时可传递263.9 mAh g-1的高可逆容量，远远超过了商用MnO2电极。更重要的是，得益于独特的结构优势，基于MnO2 / CC组装的柔性ZIB在30个循环后，在0.1 A g-1时显示出1.53 V的稳定输出电压和91.7 mAh g-1的比容量。即使在不同的弯曲角度下，它也能成功点亮LED灯泡，显示出良好的柔韧性。这项研究有助于开发用于高性能柔性ZIB的MnO2基正极材料。
更新日期：2020-01-09
中文翻译：
碳布上生长的MnO2纳米片组装的空心多面体，用于柔性水性锌离子电池。
水性锌离子电池（ZIBs）被认为是锂离子电池的潜在替代品，由于锌资源丰富且水性高安全性的优点，它们可以用作下一代可穿戴和柔性设备的电源。电解质。但是，缺乏适合ZIB的具有柔性的阴极材料阻碍了它们的进一步应用。本文以ZIF-67为自牺牲模板，通过快速水热法制备了一种新型阴极材料[MnO2纳米片组装中空多面体锚固在碳布上（MnO2 / CC）]。当在ZIB水溶液中进行测试时，经过300次循环后，MnO2 / CC在1.0 A g-1时可传递263.9 mAh g-1的高可逆容量，远远超过了商用MnO2电极。更重要的是，得益于独特的结构优势，基于MnO2 / CC组装的柔性ZIB在30个循环后，在0.1 A g-1时显示出1.53 V的稳定输出电压和91.7 mAh g-1的比容量。即使在不同的弯曲角度下，它也能成功点亮LED灯泡，显示出良好的柔韧性。这项研究有助于开发用于高性能柔性ZIB的MnO2基正极材料。
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