首页> 外文会议>World Conference on Carbon >FACILE PREPARATION OF CARBON-ENCAPSULATED MnS CORE/SHELL NANOSTRUCTURES TOWARDS HIGH-PERFORMANCE LITHIUM-ION STORAGE
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FACILE PREPARATION OF CARBON-ENCAPSULATED MnS CORE/SHELL NANOSTRUCTURES TOWARDS HIGH-PERFORMANCE LITHIUM-ION STORAGE

机译:碳封装的MNS核/壳纳米结构朝向高性能锂离子储存的体制

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Nowadays, transitional metal sulfide (TMS) materials have attracted intensive attentions when used as electrode materials for LIBs, because TMS materials as anode materials usually own excellent properties, including higher specific capacities and also better physical properties.[1] Among various metal sulfide, MnS possesses a theoretical Li-storage capacity as high as 616 mAhg~(-1).[2] However, MnS anode materials also suffer from some drawbacks such as poor electron transfer rate, low Li-ion diffusion kinetics as well as large volume change with the lithiation and delithiation. In order to promote its practical application, many efforts have been devoted to raise the electrochemical performance of MnS.[3] And design of carbon-encapsulated structure is one of the most effective strategies.[4] Coating carbon shells can not only effectively increase the electrode conductivity, but also efficiently restrain the volume variations of MnS by the confined nanospace, leading to enhanced rate-performance and cycle life of MnS.[5] However, it is still a big challenge to develop more facile method to design the MnS@C anode materials with favorable microstructures for lithium-ion diffusions.
机译:如今,过渡金属硫化物(TMS)材料当用作LIBS的电极材料时吸引了密集的关节,因为TMS材料作为阳极材料通常具有优异的性质,包括更高的特异性和更好的物理性质。[1]在各种金属硫化物中,MNS具有高达616mAhg〜(-1)的理论锂储存能力。[2]然而,MNS阳极材料也遭受一些缺点,例如电子传递速率差,低锂离子扩散动力学以及随着锂化和脱水的大体积变化。为了促进其实际应用,许多努力致力于提高MNS的电化学性能。[3]碳封装结构的设计是最有效的策略之一。[4]涂布碳壳不仅可以有效地提高电极电导率,还可以有效地抑制狭窄的纳米周期的MN的体积变化,导致MNS的增强率 - 性能和循环寿命。[5]然而,开发更容易设计以设计MNS @ C阳极材料具有良好的微观结构的锂离子扩散,仍然是一个很大的挑战。

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