翻译成英文ZnSe用作锂离子电池负极材料时，在循环过程中会出现较大的体积变化和电极材料结构坍塌等问题，从而导致电池的性能严重不稳定

When ZnSe is used as negative electrode material for lithium-ion batteries, significant volume changes and structural collapse of electrode materials occur during the cycling process, resulting in severe instability of battery performance.

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翻译成英文ZnSe用作锂离子电池负极材料时，在循环过程中会出现较大的体积变化和电极材料结构坍塌等问题，从而导致电池性能严重不稳定

When ZnSe is used as a negative electrode material for lithium-ion batteries, there are significant issues such as large volume changes and electrode material structure collapse during the cycling process, resulting in serious instability of battery performance.

翻译成英文通过与其他材料复合和优化材料的纳米结构等方式对ZnSe电极材料进行改进，制备了H-ZnSe、ZnSe/BN、ZnSe/CNTs，并进行了材料表征与电化学测试。研究内容主要分为以下三个部分：

Improvement of ZnSe electrode materials was achieved through the composite and optimization of the nanostructure of the materials. H-ZnSe, ZnSe/BN, and ZnSe/CNTs were prepared and characterized through material characterization and electrochemical testing. The research can be divided into the following three parts: