Highly Durable and Ultrafast Cycling of Dual-Ion Batteries via In Situ Construction of Cathode-Electrolyte Interphase

被引：36

作者：

Cheng, Zhenjie ^{[1
]}

Guo, Longfei ^{[1
]}

Dong, Qingyu ^{[2
]}

Wang, Chunting ^{[1
]}

Yao, Qian ^{[1
]}

Gu, Xin ^{[3
]}

Yang, Jian ^{[1
]}

Qian, Yitai ^{[1
]}

机构：

[1] Shandong Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China

[2] Chinese Acad Sci, Suzhou Inst Nanotech & NanoBion SINANO, CAS Ctr Excellence Nanosci, I Lab, Suzhou 215123, Peoples R China

[3] China Univ Petr East China, Coll New Energy, State Key Lab Heavy Oil Proc, Qingdao 266580, Peoples R China

来源：

ADVANCED ENERGY MATERIALS | 2022年 / 12卷 / 44期

关键词：

cathode-electrolyte interphases; dual-ion batteries; electrolyte additives; graphite; tris(trimethylsilyl) phosphite; GRAPHITE; INTERCALATION; PF6;

D O I：

10.1002/aenm.202202253

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Dual-ion batteries have shown promising prospect in energy storage, owing to their low material costs, high power capability, and environmental friendliness. However, graphite as the cathode always suffers from structural damage and electrode/electrolyte interface instability, which greatly deteriorate their electrochemical performance. Here, tris(trimethyl-silyl) phosphite (TMSP) is added as an electrolyte additive to improve the electrochemical performance. TMSP not only scavenges the deleterious species generated by electrolytes, but also produces a thin and uniform cathode-electrolyte interphase layer on graphite. Hence, the electrochemical performance is greatly promoted. In graphite||graphite, the capacity retention is approximate to 96.8% at 30 degrees C or 92.5% after 3000 cycles in the presence of TMSP, much better than those without TMSP (62% at 30 degrees C or 27% after 200 cycles).

引用

页数：9