Gas-phase construction of holey exfoliated graphite supported NiS nanoparticles with superior electrochemical performance for sodium-ion batteries

Wang Lina; Zhao Yun; Ma Canliang; Han Gaoyi

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Gas-phase construction of holey exfoliated graphite supported NiS nanoparticles with superior electrochemical performance for sodium-ion batteries

机译：HOLE-exfoliate石墨的气相构建支持NIS纳米粒子，具有卓越的离子电池电化学性能

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Exfoliated graphite with featured holey structure (HEG) is employed as a new matrix material for sodium-ion batteries. A gas-phase strategy is designed to simultaneously realize the uniform dispersion of NiS nanoparticles and holey surface texture of EG. Benefitted from the elevated charge transfer efficiency and accelerated ion diffusion kinetics, the well-constructed NiS/HEG electrode exhibits substantially enhanced rate performance (high capacity retention of 56.5% at 2 A g-1). Moreover, the firm combination between NiS and HEG ensures the favorable cycling stability, where a stable reversible capacity of 157.8 mAh g-1 is well retained after 1000 discharge/charge cycles at 1.0 A g-1.

机译：具有特定空穴结构（HEG）的exfoliated石墨用作钠离子电池的新型基质材料。气相策略旨在同时实现NIS纳米粒子和多孔表面纹理的均匀分散。从升高的电荷转移效率和加速离子扩散动力学中受益，良好构造的NIS / HEG电极表现出显着增强的速率性能（高容量保持在2 A G-1的56.5％）。此外，NIS和HEG之间的牢固组合确保了有利的循环稳定性，其中157.8mAhg-1的稳定可逆容量在1.0Ag-1的1000个放电/电荷循环后良好地保留。

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来源
《Materials Letters》 |2021年第1期|130396.1-130396.4|共4页
作者
Wang Lina; Zhao Yun; Ma Canliang; Han Gaoyi;
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作者单位

Shanxi Univ Inst Mol Sci Key Lab Mat Energy Convers & Storage Shanxi Prov Taiyuan 030006 PR Peoples R China;

Shanxi Univ Inst Mol Sci Key Lab Mat Energy Convers & Storage Shanxi Prov Taiyuan 030006 PR Peoples R China;

Shanxi Univ Inst Mol Sci Key Lab Mat Energy Convers & Storage Shanxi Prov Taiyuan 030006 PR Peoples R China;

Shanxi Univ Inst Mol Sci Key Lab Mat Energy Convers & Storage Shanxi Prov Taiyuan 030006 PR Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种 eng
中图分类
关键词
Holey exfoliated graphite; Nanoparticles; NiS; Energy storage and conversion;

机译：多孔扑灭石墨;纳米颗粒;NIS;能量存储和转换;

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Gas-phase construction of holey exfoliated graphite supported NiS nanoparticles with superior electrochemical performance for sodium-ion batteries

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