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bqTINYⅢ:单片电池充电和电源管理IC
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《世界电子元器件》 2004年第9期23-23,共1页
关键词 德州仪器公司 bqTINYⅢ 电池充电 电源管理 集成电路
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我的发明设想
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《知识就是力量》 1999年第5期36-36,共1页
上图所示拉链,其前端未与衣边缝上,这样便可改变以往拉链最前端容易把塑料引子拉开的弊端。
关键词 微电脑处理器 动识别 电子防盗器 防盗报警器 方向键 充电片 风轮 拉链 脚步声 分成两部分
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N-doped carbon-coated Co_3O_4 nanosheet array/carbon cloth for stable rechargeable Zn-air batteries 被引量:6
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作者 Qi Liu Lei Wang +3 位作者 Xu Liu Peng Yu Chungui Tian Honggang Fu 《Science China Materials》 SCIE EI CSCD 2019年第5期624-632,共9页
Although the application of various nonprecious compounds as the air cathodes of Zn-air batteries has been explored, the construction of highly efficient selfsupported Co-based electrodes remains challenging and highl... Although the application of various nonprecious compounds as the air cathodes of Zn-air batteries has been explored, the construction of highly efficient selfsupported Co-based electrodes remains challenging and highly desired given their outstanding electrocatalytic activity and cost-effectiveness. Herein, we fabricated a three-dimensional(3D) self-supported electrode based on N-doped,carbon-coated Co3O4 nanosheets grown on a carbon cloth(i.e., NC-Co3O4/CC) through the electrochemical deposition and carbonization. When used as a binder-free electrode for oxygen evolution reaction(OER), the NC–Co3O4/CC electrode demonstrated excellent electrocatalytic activity with an overpotential of 210 mV at 10 mA cm^-2 and a Tafel slope of79.6 mV dec^-1. In the Zn-air battery test, the electrode delivered a small charge/discharge voltage gap(0.87 V at 10 mA cm^-2) and exhibited high durability without degradation after 93 cycles at the large current density of 25 mA cm^-2.The durability of our electrode was superior to that of a commercial Pt/C+RuO2 catalyst. The excellent performance of NC–Co3O4/CC could be attributed to the presence of 3D structures that promoted electron/ion transfer. By the absence of a binder, the carbon coating improved electron conductivity and promoted electrochemical stability. Moreover, N doping could be used to adjust the C electron structure and accelerate electron transfer. The present study provides a facile and effective route for the synthesis of various self-supported electrodes that fulfill the requirements of different energy storage and conversion devices. 展开更多
关键词 N-doped carbon Co3O4 nanosheet self-supported electrode oxygen evolution reaction Zn-air batteries
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