Based on hydrothermal synthesis and solid-phase thermal reaction, LiNi0.8Co0.15Al0.05O2 hollow nanospheres (LNCA HNSs) were synthesized by using SiO2 hollow nanospheres as hard template. Firstly, the SiO2 HNSs were prepared. Then, (Ni0.8Co0.15Al0.05)CO3 nanosheets grew on the surface of SiO2 HNSs to form SiO2@(Ni0.8Co0.15Al0.05)CO3 hollow nanospheres with double shells by hydrothermal method. Finally, the above precursors and lithium source were calcined at high temperature, and then SiO2 template was etched to obtain hollow LNCA HNSs. The characterization results showed that the LNCA HNSs are hollow spheres with a diameter of about 1.8 μm. The shell thickness of LNCA HNSs is about 300 nm. Compared with LNCA nanoparticles and LNCA microparticles, LNCA HNSs showed excellent stability, high capacity, and good rate performance as cathode materials for lithium ion batteries. The LNCA HNSs exhibited a reversible capacity of 202.4 mA h g−1 at 0.1 C and good stability of 179.1 mA h g−1 at 1 C after 80 cycles.

中文翻译：

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模板辅助合成LiNi0.8Co0.15Al0.05O2空心纳米球作为锂离子电池正极材料

基于水热合成和固相热反应，以SiO2空心纳米球为硬模板合成了LiNi0.8Co0.15Al0.05O2空心纳米球（LNCA HNSs）。首先，制备了 SiO2 HNSs。然后，(Ni0.8Co0.15Al0.05)CO3 纳米片在SiO2 HNSs 表面生长，通过水热法形成具有双壳的SiO2@(Ni0.8Co0.15Al0.05)CO3 空心纳米球。最后，将上述前驱体和锂源在高温下煅烧，然后蚀刻SiO2模板以获得中空的LNCA HNSs。表征结果表明，LNCA HNSs 是直径约为 1.8 μm 的空心球体。LNCA HNS 的壳厚度约为 300 nm。与 LNCA 纳米粒子和 LNCA 微粒相比，LNCA HNSs 表现出优异的稳定性、高容量、和作为锂离子电池正极材料的良好倍率性能。LNCA HNSs 在 0.1 C 下表现出 202.4 mA hg-1 的可逆容量和在 1 C 下 80 次循环后具有 179.1 mA hg-1 的良好稳定性。