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| 1 | CuO nanoflowers/copper fiber felt integrated porous electrode for lithium-ion batteries显示文摘The structure of current collectors has significant effects on the performance of a lithium-ion battery(LIB).In this study,we use copper fiber felts made by multi-tooth cutting and high-temperature solid-phase sintering as the current collector for LIBs.An integrated porous electrode based on CuO nanoflowers/copper fiber felt is developed for the anode.Results suggest that the reversible capacity and cycle stability of this new anode are significantly improved,compared with the pristine bare-surface copper plate under the same condition of rate cycles.The new anode structure based on the copper-fiber felt with a porosity of 60%exhibits a higher performance with an initial specific capacity of 609.5 mAh g^(-1)and retains 486.1 mAh g^(-1)after 200 cycles at a current density of 0.5 C.The improved electrochemical performance of this electrode is attributed to its large surface area of CuO nanoflowers and porous structure of the copper fiber felt,due to enhanced contact between the active material of CuO nanoflowers and electrolyte.This pore-rich structure makes the electrolyte easy to permeate into the electrode,shortens the diffusion path of Li^(+),reduces the internal resistance and alleviates the volume expansion of the active material during the insertion and desertion processes of Li^(+). | YUAN Wei YE YinTong YANG Yang ZHANG XiaoQing PAN BaoYou PENG ZiMing WU MuLun QIU ZhiQiang WANG Chun YUAN YuHang YAN ZhiGuo TANG Yong | 2020 | Science China(Technological Sciences)2020，63，11： | 1 |
| 2 | Cu_2O微晶的晶面可控制备及表征显示文摘以氯化铜和NaOH为原料,葡萄糖为还原剂,聚乙烯吡咯烷酮(PVP)为表面活性剂,液相还原可控制备出Cu2O微晶。利用SEM、XRD等表征手段对其形貌及物相进行分析,研究反应温度、反应时间以及PVP加入量对Cu2O微晶形貌结构的影响机理。得出80℃为最佳反应温度,3 h为最佳反应时间,且随着PVP与铜盐的摩尔比增加,{111}晶面与{100}晶面面积比逐步增大,Cu2O微晶的形貌也呈现出立方体、削角立方体到削角八面体的演化规律。 | 李安丽 李朋伟 | 2014 | 电子元件与材料2014，33，9： | 0 |
| 3 | Commentary on the special topic: nanoenergy and nanosystem显示文摘In the internationally renowned journal—Science China Technological Sciences—a good selection of articles dedicated to the field of micro-/nanotechnologies have reported several advanced technologies in nanoenergy and nanosystems.Five papers written with great care by international experts are targeting to address technical challenges in self-powered chaotic signal generators | Lijie Li | 2015 | Science Bulletin2015，60，18： | 0 |
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