A Robust Li-Intercalated Interlayer withStrong Electron Withdrawing Ability EnablesDurable and High-Rate Li Metal Anode

被引：51

作者：

Chen, Jiahe ^{[1
,2
]}

Li, Zhendong ^{[1
]}

Sun, Nannan ^{[1
,2
]}

Xu, Jinting ^{[1
]}

Li, Qian ^{[3
]}

Yao, Xiayin ^{[1
]}

Ming, Jun ^{[3
]}

Peng, Zhe ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China

来源：

ACS ENERGY LETTERS | 2022年 / 7卷 / 05期

基金：

中国国家自然科学基金;

关键词：

LITHIUM DEPOSITION; COMPOSITE; OXIDE;

D O I：

10.1021/acsenergylett.2c00395

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Lithium (Li) anodes are not stable in most organicelectrolytes upon cycling, which is an urgent issue in next-generation Li metal batteries (LMBs) for durable high-energy-density storage. Enhancing the Li plating uniformity is commonlybelieved to be decisive for stabilizing the Li metal anode.However, here it is found that prohibiting e-escape to theelectrode surface for suppressing electrolyte decomposition is amore critical action than Li plating morphology control in LMBperformances. A Li-intercalated interlayer, obtained through thelithiation of an orthorhombic Nb2O5precursor layer withdisproportionate Nb4+/Nb5+components, is involved as themodel Li protection structure with high structural integrality,fast Li+conducting channels, and, more importantly, strong e-withdrawing ability. The Li anode performance gained by this advanced interlayer significantly exceeds that by theconventional lithiophilic interlayer, particularly under limited-Li-source conditions. Ourfindings provide alternativeguidelines for protective interlayer construction to achieve reliable and safe LMBs

引用

页码：1594 / 1603

页数：10

共 36 条

[31]

Electrochemical behaviors of a Li3N modified Li metal electrode in secondary lithium batteries [J].