Steric-hindrance effect and self-sacrificing template behavior induced PDA@SnO2-QDs/N-doped carbon hollow nanospheres: Enhanced structural stability and reaction kinetics for long-cyclic Li-ion half/full batteries空间位阻效应和自牺牲模板行为诱导的PDA @ SnO2-QDs/N掺杂碳空心纳米球: 长循环锂离子半/全电池的增强结构稳定性和反应动力学JOURNAL OF COLLOID AND INTERFACE SCIENCEIF9.72023-02-0116PRE