ZnSe nanoparticles dispersed in reduced graphene oxides with enhanced electrochemical properties in lithium/sodium ion batteries.
ZnSe nanoparticles dispersed in reduced graphene oxides with enhanced electrochemical properties in lithium/sodium ion batteries.
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DOI：
10.1039/c8ra03479f
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发表时间：
2018-07-16
期刊：
影响因子：
3.9
通讯作者：
Chen J
中科院分区：
文献类型：
--
作者：
Cao X;Li A;Yang Y;Chen J
采用一步水热法制备了一种ZnSe还原氧化石墨烯（ZnSe-rGO）纳米复合材料，并将其作为锂离子电池和钠离子电池（LIB/SIB）的负极材料。与裸ZnSe相比，所制备的复合材料在锂和钠存储方面均表现出极大增强的可逆容量、优异的循环稳定性和倍率性能（在LIB中以500 mA g-1进行100次循环后为530 mA h g-1，在SIB中以100 mA g-1的电流密度进行50次循环后为259.5 mA h g-1）。rGO在提高纳米复合材料的导电性、缓冲体积变化和防止ZnSe颗粒在循环过程中聚集方面起着重要作用，从而确保电极的高结构稳定性和可逆性。研究了ZnSe分散在还原氧化石墨烯中的ZnSe-rGO纳米复合材料作为锂和钠离子电池（LIB/SIB）的阳极。
A ZnSe-reduced graphene oxide (ZnSe-rGO) nanocomposite with ZnSe dispersed in rGO is prepared via a one-step hydrothermal method and applied as the anode materials for both lithium and sodium ion batteries (LIBs/SIBs). The as-prepared composite exhibits greatly enhanced reversible capacity, excellent cycling stability and rate capability (530 mA h g−1 after 100 cycles at 500 mA g−1 in LIBs, 259.5 mA h g−1 after 50 cycles at the current density of 100 mA g−1 in SIBs) compared with bare ZnSe in both lithium and sodium storage. The rGO plays an influential role in enhancing the conductivity of the nanocomposites, buffering the volume change and preventing the aggregation of ZnSe particles during the cycling process, thus securing the high structure stability and reversibility of the electrode. ZnSe-rGO nanocomposite with ZnSe dispersed in reduced graphene oxides is studied as an anode for lithium and sodium ion batteries (LIBs/SIBs).
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