Abstract In this study, a simple hydrothermal method was used to prepare flower-like zinc oxide, which was then combined with biomass hollow carbon derived from rice husk (rice hull cellulose, RHC) under hydrothermal conditions to obtain a ZnO/RHC composite material. The ZnO/RHC composite was used as the anode in lithium-ion batteries and it exhibited excellent electrochemical performance and cycling stability due to its special microstructure. In the ZnO/RHC composite, the sheet structure comprising zinc oxide was coated on the biomass carbon layer of the hollow spherical structure to form numerous conductive networks, thereby improving the electrochemical properties of the ZnO/RHC. The composite provided a reversible specific capacity of 1002.5 mA h g−1 after 160 cycles at 0.2C, which is higher than the theoretical specific capacity of zinc oxide (978 mA h g−1). This material may facilitate the efficient and simple preparation of high performance lithium-ion battery anode materials.

中文翻译：

---

高性能锂离子电池负极用稻壳中空碳包覆花氧化锌的简单合成

摘要 本研究采用简单的水热法制备花状氧化锌，然后在水热条件下与源自稻壳的生物质空心碳（稻壳纤维素，RHC）结合，得到ZnO/RHC复合材料。ZnO/RHC复合材料被用作锂离子电池的负极，由于其特殊的微观结构，它表现出优异的电化学性能和循环稳定性。在ZnO/RHC复合材料中，将含有氧化锌的片状结构包覆在空心球形结构的生物质碳层上，形成大量导电网络，从而提高了ZnO/RHC的电化学性能。该复合材料在 0.2C 下循环 160 次后提供 1002.5 mA hg-1 的可逆比容量，这高于氧化锌的理论比容量 (978 mA hg-1)。该材料有利于高效、简单地制备高性能锂离子电池负极材料。