Abstract Both the exploitation of high-performance anode materials for lithium-ions batteries (LIBs) and the recycle of discard carbonated drinks are urgent problems that need to be solved. Herein, we constructed hierarchical ZnO@SC and ZnO@FC using discard Sprite and Fanta drinks as solvent undergoing ordinal solvothermal reaction and annealing. Interconnected carbon skeletons can greatly accelerate the electroconductibility of composites and effectively prevent ZnO nanoparticle from agglomerating. Meanwhile, nanoscale design benefits to assuage the pulverization of ZnO composites caused by repetitive shrinkage/expansion during repeated charge/discharge process. When served as anode for LIBs, both ZnO@SC and ZnO@FC exhibit excellent electrochemical performance. ZnO@FC maintains high discharge capacity of 1157 mAh g−1 after 150 cycles at 0.2 A g−1 and 742 mAh g−1 after 600 cycles even at 1.0 A g−1, showing the most remarkable lithium-storage performance among as-prepared ZnO@C composites. This work opens up a new opportunity for the recycle of discarded carbonated drinks and the application of ZnO@C anode in LIBs.

中文翻译：

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使用废弃的雪碧和芬达饮料构建分层 ZnO@C 复合材料以增强锂存储

摘要 高性能锂离子电池负极材料的开发和废弃碳酸饮料的回收利用都是亟待解决的问题。在此，我们使用废弃的雪碧和芬达饮料作为溶剂，进行顺序溶剂热反应和退火，构建了分层 ZnO@SC 和 ZnO@FC。相互连接的碳骨架可以大大加快复合材料的导电性，有效防止ZnO纳米颗粒团聚。同时，纳米级设计有利于缓解重复充放电过程中重复收缩/膨胀引起的 ZnO 复合材料的粉化。当用作锂离子电池的阳极时，ZnO@SC 和 ZnO@FC 都表现出优异的电化学性能。ZnO@FC 在 0.0 循环 150 次后仍保持 1157 mAh g-1 的高放电容量。即使在 1.0 A g-1 下，600 次循环后 2 A g-1 和 742 mAh g-1 也显示出所制备的 ZnO@C 复合材料中最显着的锂存储性能。这项工作为废弃碳酸饮料的回收利用以及ZnO@C阳极在LIBs中的应用开辟了新的机遇。