Hierarchical Stratiform of a Fluorine-Doped NiO Prism as an Enhanced Anode for Lithium-Ion Storage,The Journal of Physical Chemistry Letters

当前位置： X-MOL 学术 › J. Phys. Chem. Lett. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Hierarchical Stratiform of a Fluorine-Doped NiO Prism as an Enhanced Anode for Lithium-Ion Storage
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2021-11-18 , DOI: 10.1021/acs.jpclett.1c02843
Yunlei Zhong _{1,

2} , Litong Wang ₁ , Zhenjiang Yu ₃ , Chaowei Li ₁ , Zhaorui Wen ₁ , Junpeng Xie ₁ , Yue Hu ₄ , Wei Wang ₅ , Guo Hong _{1,

6}

Affiliation

Doping is regarded as a prominent strategy to optimize the crystal structure and composition of battery materials to withstand the anisotropic expansion induced by the repeated insertion and extraction of guest ions. The well-known knowledge and experience obtained from doping engineering predominate in cathode materials but have not been fully explored for anodes yet. Here, we propose the practical doping of fluorine ions into the host lattice of nickel oxide to unveil the correlation between the crystal structure and electrochemical properties. Multiple ion transmission pathways are created by the orderly two-dimensional nanosheets, and thus the stress/strain can be significantly relieved with trace fluorine doping, ensuring the mechanical integrity of the active particle and superior electrochemical properties. Density functional theory calculations manifest that the F doping in NiO could improve crystal structural stability, modulate the charge distribution, and enhance the conductivity, which promotes the performance of lithium-ion storage.

中文翻译：

氟掺杂 NiO 棱镜的分层分层作为锂离子存储的增强阳极

掺杂被认为是优化电池材料的晶体结构和组成以承受由客体离子的重复插入和提取引起的各向异性膨胀的重要策略。从掺杂工程中获得的众所周知的知识和经验在正极材料中占主导地位，但尚未对负极进行充分探索。在这里，我们建议将氟离子实际掺杂到氧化镍的主晶格中，以揭示晶体结构与电化学性能之间的相关性。有序的二维纳米片创造了多个离子传输路径，因此微量氟掺杂可以显着减轻应力/应变，确保活性颗粒的机械完整性和优异的电化学性能。

更新日期：2021-11-25

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南