Department of Applied Chemistry, School of Science, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an 710049 (China).
Angew Chem Int Ed Engl. 2014 Nov 17;53(47):12803-7. doi: 10.1002/anie.201407917. Epub 2014 Sep 22.
Despite the great advantages of hollow structures as electrodes for lithium-ion batteries, one apparent common drawback which is often criticized is their compromised volumetric energy density due to the introduced hollow interior. Here, we design and synthesize bowl-like SnO2 @carbon hollow particles to reduce the excessive hollow interior space while retaining the general advantages of hollow structures. As a result, the tap density can be increased about 30 %. The as-prepared bowl-like SnO2 @carbon hollow particles with conformal carbon support exhibit excellent lithium storage properties in terms of high capacity, stable cyclability and excellent rate capability.
尽管空心结构作为锂离子电池的电极具有很大的优势，但引入空心内部往往会导致其体积能量密度降低，这是一个明显的常见缺点。在这里，我们设计并合成了碗状 SnO2@ 碳空心颗粒，以减少过度的空心内部空间，同时保留空心结构的一般优势。结果，振实密度可以提高约 30%。所制备的具有共形碳支撑的碗状 SnO2@ 碳空心颗粒在高容量、稳定的循环性能和优异的倍率性能方面表现出优异的锂存储性能。
