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Tuning Shell Numbers of Transition Metal Oxide Hollow Microspheres toward Durable and Superior Lithium Storage
ACS Nano ( IF 15.8 ) Pub Date : 2017-11-07 00:00:00 , DOI: 10.1021/acsnano.7b06296 Dan Luo 1 , Ya-Ping Deng 1 , Xiaolei Wang 2 , Gaoran Li 1 , Juan Wu 3 , Jing Fu 1 , Wen Lei 1 , Ruilin Liang 1 , Yangshuai Liu 1 , Yuanli Ding 1 , Aiping Yu 1 , Zhongwei Chen 1
ACS Nano ( IF 15.8 ) Pub Date : 2017-11-07 00:00:00 , DOI: 10.1021/acsnano.7b06296 Dan Luo 1 , Ya-Ping Deng 1 , Xiaolei Wang 2 , Gaoran Li 1 , Juan Wu 3 , Jing Fu 1 , Wen Lei 1 , Ruilin Liang 1 , Yangshuai Liu 1 , Yuanli Ding 1 , Aiping Yu 1 , Zhongwei Chen 1
Affiliation
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Multishelled hollow structured transition metal oxides (TMOs) are highly potential materials for high energy density energy storage due to their high volumetric energy density, reduced aggregation of nanosized subunits, and excellent capacity and durability. However, traditional synthetic methods of TMOs generally require complicated steps and lack compositional/morphological adjustability. Herein, a general and straightforward strategy is developed to synthesize multishelled porous hollow microspheres, which is constituted of nanosize primary TMO particles, using metal acetate polysaccharide microspheres as the precursor. This universal method can be applied to design TMOs’ hollow spheres with tunable shell numbers and composition. The hierarchical porous quadruple-shelled hollow microspheres with nanosized Ni–Co–Mn oxide demonstrate an increased number of active sites, boosted rate capability, enhanced volumetric energy density, and showed great tolerance toward volume expansion upon cycling, thus exhibiting excellent Li+ storage capability with high specific capacity (1470 mAh g–1 at 0.2 A g–1 and 1073.6 mAh g–1 at 5.0 A g–1) and excellent cycle retention (1097 mAh g–1 after 250 cycles at 0.2 A g–1) among TMO anode materials for lithium-ion batteries.
中文翻译：
调整过渡金属氧化物空心微球的壳数以实现持久和优异的锂存储
多壳空心结构化过渡金属氧化物（TMO）由于具有高的体积能量密度，减少的纳米级亚基聚集以及出色的容量和耐用性，因此是用于高能量密度能量存储的高潜力材料。但是，传统的TMO合成方法通常需要复杂的步骤，并且缺乏组成/形态的可调节性。本文中，开发了一种通用且直接的策略，以金属乙酸盐多糖微球为前体，合成由纳米级初级TMO颗粒组成的多壳多孔中空微球。这种通用方法可用于设计具有可调壳数和组成的TMO空心球。+具有高比容量存储能力（1470毫安克-1 0.2 A G -1和1073.6毫安克-1 5.0 A G -1）和优异的循环保持率（1097毫安克-1在0.2 A克250次循环后- 1）是用于锂离子电池的TMO负极材料。
更新日期：2017-11-08
中文翻译：
调整过渡金属氧化物空心微球的壳数以实现持久和优异的锂存储
多壳空心结构化过渡金属氧化物（TMO）由于具有高的体积能量密度，减少的纳米级亚基聚集以及出色的容量和耐用性，因此是用于高能量密度能量存储的高潜力材料。但是，传统的TMO合成方法通常需要复杂的步骤，并且缺乏组成/形态的可调节性。本文中，开发了一种通用且直接的策略，以金属乙酸盐多糖微球为前体，合成由纳米级初级TMO颗粒组成的多壳多孔中空微球。这种通用方法可用于设计具有可调壳数和组成的TMO空心球。+具有高比容量存储能力（1470毫安克-1 0.2 A G -1和1073.6毫安克-1 5.0 A G -1）和优异的循环保持率（1097毫安克-1在0.2 A克250次循环后- 1）是用于锂离子电池的TMO负极材料。
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