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作为化离子电池的阴极材料的NiTi层双氧化@碳纳米管

Lu Zou¹, Shijiao Sun¹, Chang Zhang¹

¹State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China.

Nanomaterials (Basel, Switzerland)

|October 27, 2023

概括

研究人员开发了一种用于离子电池 (CIB) 的新型NiTi-LDH@CNT复合物. 这种正极材料展示了有前途的电化学性能,推进了CIB技术,用于更安全,高密度的能量存储.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
储能储能储能储能储能储能

背景情况:

离子电池 (CIB) 提供了安全和经济高效的储能解决方案.
目前,有限的阴极材料选择阻碍了CIB的发展.
新型阴极材料对于推进CIB技术至关重要.

研究的目的:

为CIB应用合成和表征一种新的NiTi-LDH@CNT复合物.
为了评估NiTi-LDH@CNT复合材料作为阴极材料的电化学性能.
研究用于CIB的NiTi-LDH@CNT复合物的电荷存储机制.

主要方法:

对于NiTi-LDH@CNT复合物合成的逆微乳液方法.
电化学测试 (循环,静电电荷-放电) 来评估性能.
X射线光电子光谱 (XPS) 和能量散射X射线光谱 (EDS) 用于材料表征和机制研究.
用于结构分析的X射线衍射 (XRD).

主要成果:

NiTi-LDH@CNT复合物表现出高特异性表面积 (266 m2 g-1) 和高孔积 (0.42 cm3 g-1).
复合电极在150个循环后在100 mA g-1.1下产生了69 mAh g-1的可逆特定容量.
XPS和EDS证实了循环过程中的Ni/Ti价值变化和Cl−迁移,表明了强大的电荷存储机制.

结论:

NiTi-LDH@CNT复合材料是一种用于CIB的新且有效的阴极材料.
其稳定的分层结构和容易的价值变化有助于其优异的电化学性能.
这项工作扩大了CIBs的阴极材料范围,为改进的储能解决方案铺平了道路.

关键词:

碳纳米管是如何使用的化物离子电池化物离子电池有层的双氧化.

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