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Making Fiber‐Shaped Ni//Bi Battery Simultaneously with High Energy Density, Power Density, and Safety
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2019-10-21 , DOI: 10.1002/adfm.201905971 Mengying Wang 1 , Songlin Xie 1 , Chengqiang Tang 1 , Yang Zhao 1 , Meng Liao 1 , Lei Ye 1 , Bingjie Wang 1 , Huisheng Peng 1
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2019-10-21 , DOI: 10.1002/adfm.201905971 Mengying Wang 1 , Songlin Xie 1 , Chengqiang Tang 1 , Yang Zhao 1 , Meng Liao 1 , Lei Ye 1 , Bingjie Wang 1 , Huisheng Peng 1
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Fiber‐shaped batteries are widely explored for a variety of important fields such as wearable electronics, information technology, internet of things, and public health. However, it remains difficult to simultaneously achieve high energy density, power density, and safety, which has largely limited their promising applications. Here, a new type of fiber‐shaped Ni//Bi batteries with remarkable electrochemical performances is created from hierarchically 3D electrodes, where reduced graphene oxide sheets framed with Bi serve as the anode while reduced graphene oxide sheets wrapped with nickel oxide/nickel function as the cathode. The fiber‐shaped Ni//Bi batteries show high energy density of 43.35 Wh kg−1 or 26.01 mWh cm−3 and high power density of 6600 W kg−1 or 3.96 W cm−3 with 96% capacity retention after 10 000 cycles. They are also safe with the use of aqueous electrolyte and can be further woven into the next‐generation flexible textile‐type power system. This work provides a general and efficient strategy to develop high‐performance batteries by designing hierarchically structured electrodes.
中文翻译：
同时制造具有高能量密度，功率密度和安全性的纤维状Ni // Bi电池
纤维形电池已在可穿戴电子设备，信息技术，物联网和公共卫生等许多重要领域中得到了广泛的探索。但是，同时实现高能量密度，功率密度和安全性仍然很困难，这在很大程度上限制了它们的有前途的应用。在此，通过分层3D电极创建了一种新型的具有出色电化学性能的纤维状Ni // Bi电池，其中以Bi为框的还原型氧化石墨烯片作为阳极，而用氧化镍/镍包裹的还原型氧化石墨烯片充当阳极。阴极。纤维状Ni // Bi电池显示出43.35 Wh kg -1或26.01 mWh cm -3的高能量密度和6600 W kg -1的高功率密度或3.96 W cm -3，在1万次循环后具有96％的容量保持率。使用含水电解质也很安全，可以将它们进一步编织到下一代柔性纺织品型电源系统中。这项工作为通过设计分层结构的电极开发高性能电池提供了一种通用而有效的策略。
更新日期：2020-01-17
中文翻译：
同时制造具有高能量密度，功率密度和安全性的纤维状Ni // Bi电池
纤维形电池已在可穿戴电子设备，信息技术，物联网和公共卫生等许多重要领域中得到了广泛的探索。但是，同时实现高能量密度，功率密度和安全性仍然很困难，这在很大程度上限制了它们的有前途的应用。在此，通过分层3D电极创建了一种新型的具有出色电化学性能的纤维状Ni // Bi电池，其中以Bi为框的还原型氧化石墨烯片作为阳极，而用氧化镍/镍包裹的还原型氧化石墨烯片充当阳极。阴极。纤维状Ni // Bi电池显示出43.35 Wh kg -1或26.01 mWh cm -3的高能量密度和6600 W kg -1的高功率密度或3.96 W cm -3，在1万次循环后具有96％的容量保持率。使用含水电解质也很安全，可以将它们进一步编织到下一代柔性纺织品型电源系统中。这项工作为通过设计分层结构的电极开发高性能电池提供了一种通用而有效的策略。
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