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首页> 外文期刊>RSC Advances >One-step in situ growth of ZnS nanoparticles on reduced graphene oxides and their improved lithium storage performance using sodium carboxymethyl cellulose binder
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One-step in situ growth of ZnS nanoparticles on reduced graphene oxides and their improved lithium storage performance using sodium carboxymethyl cellulose binder

机译：使用羧甲基纤维素钠粘合剂在还原的氧化石墨烯上一步一步原位生长ZnS纳米颗粒及其改善的锂存储性能

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ZnS nanoparticles are in situ grown on reduced graphene oxides (rGO) via a simplified one-step hydrothermal method. Sodium carboxymethyl cellulose (CMC) is firstly applied as the binder for ZnS based anodes and shows a more advantageous binding effect than PVDF. To simplify the synthesis procedure, L -cysteine is added as the sulfur source for ZnS and simultaneously as the reducing agent for rGO. The average diameter of ZnS nanoparticles is measured to be 13.4 nm, and they uniformly disperse on the rGO sheets without any obvious aggregation. As anode materials, the CMC bound ZnS–rGO nanocomposites can maintain a high discharge capacity of 705 mA h g ~(?1) at a current density of 500 mA g ~(?1) for 150 cycles. The significantly improved electrochemical performance mainly derives from the combined effects of the small and uniformly dispersed ZnS nanoparticles, the high conductivity and structural flexibility of rGO and the strong binding ability of CMC.
机译：ZnS纳米颗粒通过简化的一步式水热法在还原型氧化石墨烯（rGO）上原位生长。羧甲基纤维素钠（CMC）首先被用作ZnS基阳极的粘合剂，并且显示出比PVDF更有利的粘合效果。为了简化合成过程，添加L-半胱氨酸作为ZnS的硫源，同时作为rGO的还原剂。 ZnS纳米粒子的平均直径经测量为13.4 nm，它们均匀地分散在rGO板上，没有任何明显的聚集。作为阳极材料，CMC结合的ZnS–rGO纳米复合材料可以在150 mA电流密度下以500 mA g〜（？1）维持705 mA h g〜（？1）的高放电容量。电化学性能的显着改善主要来自小的且均匀分散的ZnS纳米颗粒，rGO的高电导率和结构柔性以及CMC的强大结合能力的综合作用。

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