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您的检索式：作者名="Yinger Deng"
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| 1 | Natural Stibnite for Lithium‑/Sodium‑Ion Batteries:Carbon Dots Evoked High Initial Coulombic Efficiency显示文摘The application of Sb_(2)S_(3)with marvelous theoretical capacity for alkali metal-ion batteries is seriously limited by its poor electrical conductivity and low initial coulombic efficiency(ICE).In this work,natural stibnite modified by carbon dots(Sb_(2)S_(3)@xCDs)is elaborately designed with high ICE.Greatly,chemical processes of local oxidation–partial reduction–deep coupling for stibnite reduction of CDs are clearly demonstrated,confirmed with in situ high-temperature X-ray diffraction.More impressively,the ICE for lithium-ion batteries(LIBs)is enhanced to 85%,through the effect of oxygen-rich carbon matrix on C–S bonds which inhibit the conversion of sulfur to sulfite,well supported by X-ray photoelectron spectroscopy characterization of solid electrolyte interphase layers helped with density functional theory calculations.Not than less,it is found that Sb–O–C bonds existed in the interface effectively promote the electronic conductivity and expedite ion transmission by reducing the bandgap and restraining the slip of the dislocation.As a result,the optimal sample delivers a tremendous reversible capacity of 660 mAh g^(−1)in LIBs at a high current rate of 5 A g^(−1).This work provides a new methodology for enhancing the electrochemical energy storage performance of metal sulfides,especially for improving the ICE. | Yinger Xiang Laiqiang Xu Li Yang Yu Ye Zhaofei Ge Jiae Wu Wentao Deng Guoqiang Zou Hongshuai Hou Xiaobo Ji | 2022 | Nano-Micro Letters2022，14，8： | 1 |
| 2 | Chemical weathering profile in the V–Ti–Fe mine tailings pond:a basalt-weathering analog显示文摘The(ultra-)mafic mine tailings pond revealed a weathering discrepancy in the tailings profile,which provided a valuable analog to assess the role of carbonate and silicate weathering of the basalt.In this study,drill-cores samples were selected from the Wanniangou V–Ti–Fe mine tailings pond(Sichuan province,China)to investigate the mineralogicand geochemical characteristics in the tailings profile.The results reveal(1)the tailings pond profile consist of upper and lower layers.The upper layer is composed of carbonate weathering(1.4%),which was formed in the initial stages of tailings exposure and represented a minimal weathering degree.(2)The lower layer was primarily observed at the aquifer zone of the tailings pond,and was consistent with 0.45%carbonate weathering and 48.4%silicate weathering.(3)The weathering discrepancy in the tailings profile could be due to the sulfide oxidation and aerobic/flowing aquifer,which facilitate the water-tailings reactions.The tailings profile provides an analog to studying basalt weathering,as it spans both carbonate and silicate weathering.This research reinforces the idea that silicate weathering is predominant in basaltic areas and plays a crucial role in regulating atmospheric CO_(2)(carbon dioxide)levels on Earth. | Xiaolin Zhang Yinger Deng Liang Tang Zhengmeng Hou Jinsong Yang | 2023 | Acta Geochimica2023，42，6： | 0 |
| 3 | Carbon dots for ultrastable solid-state batteries显示文摘Among the solid electrolytes for solid-state Li batteries,polymer electrolytes are actively explored on the basis of the good interfacial contact and easy making,while it is still constrained by slow ionic transport and low lithium ion transference number.Herein,functional carbon dots-based Li+conductor(CD-Li)is designed to improve the dynamics and selectivity of Li+transport in polyethylene oxide(PEO)electrolyte.High ionic conductivity(1.0×10^(−4) S/cm,25℃)and Li+transference number(0.60)were successfully achieved within the CD‐Li‐based PEO composite electrolyte,which could be attributed to the enhanced chain movement and the limited motion of anion.Moreover,the characteristics of big volume of individual anions of CD-Li can provide more free Li^(+).As well,benefiting from the existence of F atom in the CD-Li,in-situ constructed LiF-containing interfacial layer is in favor of maintaining the interface stability and facilitating the rapid transmission of Li ions.The composite electrolyte with CD-Li can address the ionic conductivity issues accompanied with strengthening the interfacial stability.The distinctive composite electrolyte realizes the stable cycle performance for Li/LiFePO_(4) and Li/LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)batteries.The exploration of multifunctional carbon dot fillers provides new ideas for the efficient development of composite electrolytes. | Laiqiang Xu Hanyu Tu Fangjun Zhu Yinger Xiang Zheng Luo Susu Fang Wentao Deng Guoqiang Zou Hongshuai Hou Xiaobo Ji | 2022 | SmartMat2022，3，2： | 0 |
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