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Neuron-Inspired Design of High-Performance Electrode Materials for Sodium-Ion Batteries
ACS Nano ( IF 15.8 ) Pub Date : 2018-10-11 00:00:00 , DOI: 10.1021/acsnano.8b06585 Yu-Lin Bai 1 , Yu-Si Liu 1 , Chao Ma 1 , Kai-Xue Wang 1 , Jie-Sheng Chen 1
ACS Nano ( IF 15.8 ) Pub Date : 2018-10-11 00:00:00 , DOI: 10.1021/acsnano.8b06585 Yu-Lin Bai 1 , Yu-Si Liu 1 , Chao Ma 1 , Kai-Xue Wang 1 , Jie-Sheng Chen 1
Affiliation
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Sodium-ion batteries (SIBs) are generally considered as promising cheap alternatives of lithium-ion batteries for stationary renewable energy storage and have received increasing attention in recent years. The exploration of anode materials with efficient electron transportation is essential for improving the performance of SIBs. Inspired by the signal transfer mode of a neuron, we designed a composite by stringing MoS2 nanoflower (soma) with multiwall carbon nanotubes (MWCNTs) (axons). High-resolution TEM observation reveals a lattice matching growth mechanism of MoS2 nanosheets on the interface of MWCNTs and the lattice expansion of the (002) plane of MoS2. The lattice matching among the MoS2 nanosheet and MWCNT could facilitate electron transfer and structure maintenance upon cycling. The expanded distance of the (002) plane of MoS2 would also promote the sodium-ion intercalation/deintercalation kinetics of the composite. Benefiting from the structural features, when used as an anode material for SIBs, the composite exhibits excellent electrochemical performance, including high specific capacity, excellent cycle stability, and superior rate capabilities. A stable capacity of 527.7 mAh g–1 can be achieved after 110 cycles at a current density of 100 mA g–1. The neuron-inspired design proposed is a promising and efficient strategy for the development of electrode materials for SIBs with high mass transport kinetics and structural stability.
中文翻译：
神经元启发的钠离子电池高性能电极材料设计
钠离子电池（SIB）通常被认为是用于固定式可再生能源的锂离子电池的有前途的廉价替代品，并且近年来受到越来越多的关注。利用有效的电子传输来探索阳极材料对于改善SIB的性能至关重要。受神经元信号传递模式的启发，我们通过将MoS 2纳米花（soma）与多壁碳纳米管（MWCNT）（轴突）串在一起来设计复合材料。高分辨率TEM观察揭示了硫化钼的晶格匹配生长机制2个纳米片的MWCNT的接口和MoS的（002）面的晶格膨胀上2。MoS 2之间的晶格匹配纳米片和MWCNT可以促进循环时的电子转移和结构维持。MoS 2（002）平面的扩展距离还将促进复合材料的钠离子嵌入/脱嵌动力学。得益于其结构特点，当用作SIB的负极材料时，该复合材料具有出色的电化学性能，包括高比容量，出色的循环稳定性和优异的倍率性能。110次循环后，在100 mA g –1的电流密度下可以达到527.7 mAh g –1的稳定容量。提出的神经元启发设计是开发具有高传质动力学和结构稳定性的SIBs电极材料的一种有前途和有效的策略。
更新日期：2018-10-11
中文翻译：
神经元启发的钠离子电池高性能电极材料设计
钠离子电池（SIB）通常被认为是用于固定式可再生能源的锂离子电池的有前途的廉价替代品，并且近年来受到越来越多的关注。利用有效的电子传输来探索阳极材料对于改善SIB的性能至关重要。受神经元信号传递模式的启发，我们通过将MoS 2纳米花（soma）与多壁碳纳米管（MWCNT）（轴突）串在一起来设计复合材料。高分辨率TEM观察揭示了硫化钼的晶格匹配生长机制2个纳米片的MWCNT的接口和MoS的（002）面的晶格膨胀上2。MoS 2之间的晶格匹配纳米片和MWCNT可以促进循环时的电子转移和结构维持。MoS 2（002）平面的扩展距离还将促进复合材料的钠离子嵌入/脱嵌动力学。得益于其结构特点，当用作SIB的负极材料时，该复合材料具有出色的电化学性能，包括高比容量，出色的循环稳定性和优异的倍率性能。110次循环后，在100 mA g –1的电流密度下可以达到527.7 mAh g –1的稳定容量。提出的神经元启发设计是开发具有高传质动力学和结构稳定性的SIBs电极材料的一种有前途和有效的策略。
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