An ultra-high endurance and high-performance quasi-solid-state fiber-shaped Zn-Ag2O battery to harvest wind energy
An ultra-high endurance and high-performance quasi-solid-state fiber-shaped Zn-Ag2O battery to harvest wind energy
复制标题
用于收集风能的超高耐用性和高性能准固态纤维状Zn-Ag2O电池
DOI：
10.1039/c8ta10807b
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发表时间：
2019
影响因子：
11.9
通讯作者：
Yao Yagang
中科院分区：
文献类型：
--
作者：
Li Chaowei;Zhang Qichong;Songfeng E.;Li Taotao;Zhu Zezhou;He Bing;Zhou Zhenyu;Man Ping;Li Qiulong;Yao Yagang
随着可穿戴电子产品的发展，可持续能量充电的纤维状水溶液可充电电池已成为具有吸引力的电源。环境友好型锌银氧化物（Zn-Ag 2 O）电池具有高能量密度和超稳定的输出电压，已被证明是有前途的能量存储设备。然而，Zn-Ag 2 O电池由于结构粉化、银离子迁移和活性物质负载量低，循环性能差，能量密度低，是制约其广泛应用的主要瓶颈。在此，准固态纤维状Zn-Ag 2 O电池采用Ag 2 O在金属有机骨架（MOF）衍生的N掺杂碳纳米片阵列（NC）上构建，其中聚（3，4-亚乙基二氧噻吩）聚（苯乙烯磺酸盐）（PEDOT：PSS）缓冲层作为阴极。PEDOT：PSS保护层可以抑制结构粉化并减轻Ag离子的迁移。MOF衍生的NC骨架能够维持结构完整性并增加Ag 2 O的质量负载。这导致准固态纤维状Zn-Ag 2 O电池提供1.57 mW h cm-2的高能量密度和显著的循环耐久性（200次循环后79.5%），其高于任何现有技术Zn-Ag 2 O电池的报告值。更重要的是，所制备的Zn-Ag 2 O电池可以单独由风能充电。因此，目前的工作提供了一种新的方式来收获清洁和可再生的风能便携式和可穿戴电子产品。
With the development of wearable electronics, sustainable energy-charged fiber-shaped aqueous rechargeable batteries have become attractive power sources. Environmentally benign zinc-silver oxide (Zn–Ag2O) batteries with high energy density and ultra-stable output voltage have been demonstrated to be promising energy-storage devices. However, the major bottleneck for extensive application of Zn–Ag2O batteries is poor cyclic performance and low energy density due to structural pulverization, migration of Ag ions, and low loading of active substances. Herein, a quasi-solid-state fiber-shaped Zn–Ag2O battery was constructed employing Ag2O on a metal–organic framework (MOF)-derived N-doped carbon nanosheet array (NC) with a poly(3,4-ethylenedioxythiophene)poly(styrenesulfonate) (PEDOT:PSS) buffer layer as the cathode. A PEDOT:PSS protective layer could suppress structural pulverization and alleviate the migration of Ag ions. An MOF-derived NC skeleton enabled maintenance of structural integrity and increased the mass loading of Ag2O. This resulted in a quasi-solid-state fiber-shaped Zn–Ag2O battery delivering a high energy density of 1.57 mW h cm−2 and remarkable cyclic durability (79.5% after 200 cycles), which are higher than those reported for any state-of-the-art Zn–Ag2O battery. More importantly, the as-fabricated Zn–Ag2O battery could be charged solely by wind energy. Thus, the present work provides a new way to harvest clean and renewable wind energy for portable and wearable electronics.