Roles of Trimethyl Borate in Constructing an Interphase on Li Anode: Angel or Demon?

时间:2023-05-25作者:浏览量:10


Roles of Trimethyl Borate in Constructing an Interphase on Li Anode: Angel or Demon?

作者:Ding, JY (Ding, Jieying) [1] ; Wen, YC (Wen, Yucheng) [1] ; Lan, XX (Lan, Xuexia) [1] ; Hu, RZ (Hu, Renzong) [1]

页6768-6776

DOI10.1021/acsami.2c19417

在线发表JAN 2023

已索引2023-03-07

文献类型Article; Early Access

摘要

Although coupling a lithium metal anode with a Ni-rich layer cathode is a promising approach for high-energy lithium metal batteries, both electrodes are plagued by their intrinsic unstable growth, and transition metal dissolution during cycling. Making use of electrolyte additives is one of the most effective solutions to address this issue. In this paper, we explore the roles of trimethyl borate (TMB)-a common film-forming additive to protect high-nickel-ratio ternary cathodes-in suppressing lithium dendrite growth. It is found that, on the one hand, the borate-containing solid electrolyte interphase (SEI) derived from the decomposition of TMB facilitates Li+ transport, homogenizing the deposition of Li ions. On the other hand, TMB as an anion receptor provokes LiPF6 decomposition, prompting the formation of SEI with superfluous LiF. As a result, it is imperative to raise awareness of this double-edge additive when using it to be immune to lithium dendrite and cathodic degradation.


关键词

作者关键词lithium metal anodeelectrolyte additivetrimethyl boratesolid electrolyte interphasesolvation structure

Keywords PlusLITHIUMPERFORMANCEADDITIVESBATTERIESPATHWAYSCATHODE

作者信息

通讯作者地址

Hu, Renzong

(通讯作者)

South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China

所属机构

South China University of Technology

地址

1 South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Peoples R China

电子邮件地址msrenzonghu@scut.edu.cn

类别/分类

研究方向Science & Technology - Other TopicsMaterials Science

引文主题

2 Chemistry

2.62 Electrochemistry

2.62.616 Lithium-Sulfur Batteries

Sustainable Development Goals

11 Sustainable Cities and Communities

Web of Science 类别Nanoscience & NanotechnologyMaterials Science, Multidisciplinary