A Simple Prelithiation Strategy To Build a High-Rate and Long-Life Lithium-Ion Battery with Improved Low-Temperature Performance

Yao Liu; Bingchang Yang; Xiaoli Dong; Yonggang Wang; Yongyao Xia

doi:10.1002/anie.201710555

A Simple Prelithiation Strategy To Build a High-Rate and Long-Life Lithium-Ion Battery with Improved Low-Temperature Performance

Angew Chem Int Ed Engl. 2017 Dec 22;56(52):16606-16610. doi: 10.1002/anie.201710555. Epub 2017 Nov 30.

Authors

Yao Liu¹, Bingchang Yang¹, Xiaoli Dong¹, Yonggang Wang¹, Yongyao Xia¹

Affiliation

¹ Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai, 200433, China.

PMID: 29135065
DOI: 10.1002/anie.201710555

Abstract

Lithium-ion batteries (LIBs) are being used to power the commercial electric vehicles (EVs). However, the charge/discharge rate and life of current LIBs still cannot satisfy the further development of EVs. Furthermore, the poor low-temperature performance of LIBs limits their application in cold climates and high altitude areas. Herein, a simple prelithiation method is developed to fabricate a new LIB. In this strategy, a Li₃ V₂ (PO₄ )₃ cathode and a pristine hard carbon anode are used to form a primary cell, and the initial Li⁺ extraction from Li₃ V₂ (PO₄ )₃ is used to prelithiate the hard carbon. Then, the self-formed Li₂ V₂ (PO₄ )₃ cathode and prelithiated hard carbon anode are used to form a 4 V LIB. The LIB exhibits a maximum energy density of 208.3 Wh kg^-1 , a maximum power density of 8291 W kg^-1 and a long life of 2000 cycles. When operated at -40 °C, the LIB can keep 67 % capacity of room temperature, which is much better than conventional LIBs.

Keywords: electrode materials; hard carbon; lithium-ion batteries; low-temperature performance; prelithiation.

Publication types

Research Support, Non-U.S. Gov't