NaCl-Template Assisted Synthesis of 3D Honeycomb-Like LiMnPO4/C with High Rate and Stable Performance as Lithium-Ion Battery Cathodes

作者：Li, Junzhe; Luo, Shao-hua^*; Ding, Xueyong; Wang, Qing; He, Ping

来源：ACS Sustainable Chemistry and Engineering, 2018, 6(12): 16683-16691.

DOI：10.1021/acssuschemeng.8b03935

• lithium-ion batteries
• salt templating
• three-dimensional structure
• honeycomb-like flakes
• LiMnPO4

Constructing electrode materials with three-dimensional (3D) configurations has been presented as a promising way to achieve excellent properties in energy storage. Here, the cathode material LiMnPO4 with honeycomb-like structure was fabricated via a simple NaCl-template-assisted synthesis strategy. The NaCl particles served as a sacrificial template to grow LiMnPO4/C nanoparticles on the surfaces by calcination. The robust 3D honeycomb-like LiMnPO4/C network possesses a highly crystalline structure and intimate interfacial bonding between adjacent LiMnPO4/C networks, which provides more electroactive sites for lithium-ion adsorption and intercalation as well as a highly conductive network for both lithium-ion transport and electrons transfer. Furthermore, the unique honeycomb-like architecture can effectively buffer volume expansion and prevent the agglomeration of active materials. Remarkably, an excellent reversible capacity of 161.5 mAh g(-1) at 0.05 C and superior capacity retention with 96.4% after 200 cycles at a high discharge rate of 10 C has been obtained in the 3D honeycomb-like LiMnPO4/C cathode. Our work proposes a promising candidate for electrochemical energy storage and also opens up new opportunities for next-generation lithium-ion batteries.

• 出版日期2018-12
• 单位东北大学; 武汉科技大学; 钢铁研究总院