Research progress of polymer electrolytes containing organoboron for lithium-ion batteries

doi:10.19799/j.cnki.2095-4239.2023.0125

Abstract

Abstract:

Polymer-based solid-state lithium batteries have become a promising energy storage device that can meet the high energy density and high safety requirements due to the high safety, flexibility, interface compatibility with electrodes, and easy processing of solid polymer electrolytes. Organoboron compounds have received significant attention in the research on polymer electrolytes for lithium-ion batteries because of their wide range of design possibilities, excellent thermal stability, and the prospect of increasing the Li⁺ transference number of electrolytes. This paper summarizes the latest research progress of polymer electrolytes, containing organoboron for lithium-ion batteries. First, the advantages, composition, and classification of polymer electrolytes for lithium-ion batteries are briefly introduced. Then, the application of anionic borate-based single-ion conducting and borate ester-based polymer electrolyte, borate lithium salts, boron ester, and borane electrolyte additives in polymer lithium-ion batteries are introduced in detail. The comprehensive analysis shows that boron-containing groups, covalently linked to the polymer electrolyte, can increase the Li⁺ transference number and suppress the growth of lithium dendrites. Using organoboron electrolyte additives can improve the interface contact and construct a stable SEI between the electrode and electrolyte. Finally, the challenges facing the practical application of polymer electrolytes containing organoboron are pointed out, and future research directions are prospected. This review aims to highlight the potential application of boron in polymer electrolytes and provide new insights for the research and development of polymer-based solid-state lithium batteries.

Key words: boron, polymer electrolytes, lithium-ion batteries, electrolyte additives

CLC Number:

TM 911

Lingfeng HUANG, Dongmei HAN, Sheng HUANG, Shuanjin WANG, Min XIAO, Yuezhong MENG. Research progress of polymer electrolytes containing organoboron for lithium-ion batteries[J]. Energy Storage Science and Technology, 2023, 12(6): 1815-1830.

Figures/Tables 11

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Table 1

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序号	电解质类型	硼的杂化方式	离子电导率/(S/cm)	锂离子迁移数	电池性能	参考文献
1	凝胶	sp³	1.5×10^-4(26 ℃)	0.95	LFP/Li电池0.5 C循环100圈容量保持率为84%	[35]
2	凝胶	sp³	3.53×10^-4(25 ℃)	0.92	LFP/Li电池0.5 C循环200圈容量保持率为89.8%	[36]
3	凝胶	sp³	2.6×10^-4(25 ℃)	0.65	LFP/Li电池0.5 C循环500圈容量保持率为83%	[37]
4	凝胶	sp³	2×10^-4(35 ℃)	0.93	LFP/Li电池0.5 C循环200圈容量没有明显衰减	[38]
5	凝胶	sp³	1.03×10^-3(32 ℃)	0.65	LFP/Li电池0.5 C循环300圈容量保持率为 82%	[39]
6	凝胶	sp³	6.2×10^-4(25 ℃)	0.85	LFP/Li电池1 C循环200圈容量保持率为76.1%	[41]
7	凝胶	sp³	1.32×10^-3(25 ℃)	0.92	LFP/Li电池1 C循环380圈容量保持率为91%	[43]
8	全固态	sp²	2.2×10^-4(60 ℃)	0.63	LFP/Li电池0.2 C循环150圈容量保持率为93%	[47]
9	凝胶	sp²	9.11×10^-4(25 ℃)	0.68	LFP/Li电池1 C循环600圈容量保持率为93.3%	[48]
10	凝胶	sp²	1.32×10^-3(30 ℃)	0.6	LFP/Li电池0.2 C循环150圈容量保持率为86%	[49]
11	凝胶	sp²	3.44×10^-4(25 ℃)	0.58	LFP/Li电池0.5 C循环150圈容量没有明显衰减	[52]
12	凝胶	sp²	8.4×10^-4(30 ℃)	0.76	LFP/Li电池0.5 C循环400圈容量保持率为89.73%	[54]
13	凝胶	sp²	2.52×10^-3(25 ℃)	0.79	LFP/Li电池1 C循环500圈容量保持率为93.2%	[56]

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