Symmetric Sodium-Ion Battery Based on Dual-Electron Reactions of NASICON-Structured Na3MnTi(PO4)3 Material.,ACS Applied Materials & Interfaces

当前位置： X-MOL 学术 › ACS Appl. Mater. Interfaces › 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.)

Symmetric Sodium-Ion Battery Based on Dual-Electron Reactions of NASICON-Structured Na3MnTi(PO4)3 Material.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-06-12 , DOI: 10.1021/acsami.0c05784
Yu Zhou _{1,

2} , Xiji Shao _{3,

4} , Kwok-Ho Lam ₅ , You Zheng ₁ , Lingzhi Zhao ₆ , Kedong Wang ₂ , Jinzhu Zhao _{1,

7} , Fuming Chen _{1,

2} , Xianhua Hou _{1,

2}

Affiliation

Symmetric sodium-ion batteries possess promising features such as low cost, easy manufacturing process, and facile recycling post-process, which are suitable for the application of large-scale stationary energy storage. Herein, we proposed a symmetric sodium-ion battery based on dual-electron reactions of a NASICON-structured Na₃MnTi(PO₄)₃ material. The Na₃MnTi(PO₄)₃ electrode can deliver a stable capacity of up to 160 mAh g^–1 with a Coulombic efficiency of 97% at 0.1 C by utilizing the redox reactions of Ti^3+/4+, Mn^2+/3+, and Mn^3+/4+. This is the first time to investigate the symmetric sodium-ion full cell using Na₃MnTi(PO₄)₃ as both cathode and anode in the organic electrolyte, demonstrating excellent reversibility and cycling performance with voltage plateaus of about 1.4 and 1.9 V. The full cell exhibits a reversible capacity of 75 mAh g^–1 at 0.1 C and an energy density of 52 Wh kg^–1. In addition, both ex situ X-ray diffraction (XRD) analysis and first-principles calculations are employed to investigate the sodiation mechanism and structural evolution. The current research provides a feasible strategy for the symmetric sodium-ion batteries to achieve high energy density.

中文翻译：

基于NASICON结构的Na3MnTi（PO4）3材料的双电子反应的对称钠离子电池。

对称的钠离子电池具有低成本，易于制造，后处理回收方便等特点，适用于大型固定式储能的应用。在此，我们提出了一种基于NASICON结构的Na ₃ MnTi（PO ₄）₃材料的双电子反应的对称钠离子电池。利用Ti ^{3 + / 4 +}，Mn ^{2 + /}的氧化还原反应，Na ₃ MnTi（PO ₄）₃电极在0.1 C时可提供高达160 mAh g ^–1的稳定容量，库伦效率为97％。³⁺和Mn ^{3 + / 4 +}。这是首次研究使用Na ₃ MnTi（PO ₄）₃作为有机电解质中的正极和负极的对称钠离子全电池，在电压平稳在约1.4和1.9 V的情况下，表现出优异的可逆性和循环性能。充满电的电池在0.1 C时可逆容量为75 mAh g ^–1，能量密度为52 Wh kg ^–1。此外，这两个易地X射线衍射（XRD）分析和第一性原理计算采用调查sodiation机制和构造演化。当前的研究为对称钠离子电池实现高能量密度提供了可行的策略。

更新日期：2020-07-08

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11