LFP-Based Gravure Printed Cathodes for Lithium-Ion Printed Batteries

Abstract

Printed batteries have undergone increased investigation in recent years because of the growing daily use of small electronic devices. With this in mind, industrial gravure printing has emerged as a suitable production technology due to its high speed and quality, and its capability to produce any shape of image. The technique is one of the most appealing for the production of functional layers for many different purposes, but it has not been highly investigated. In this study, we propose a LiFePO4 (LFP)-based gravure printed cathode for lithium-ion rechargeable printed batteries and investigate the possibility of employing this printing technique in battery manufacture.

One‐dimensional metal–organic framework‐reinforced gel polymer electrolyte enables a stable Li metal battery

“…In addition, the cell maintained 97% of the initial capacity at 1 C for over 800 cycles with high Coulombic efficiency of 99.49% (Figure 5c), suggesting superior cycling stability, which is even comparable to the performance of liquid-electrolyte LIBs using LiFePO 4 (Figure 5d). [16][17][18][19][20][21][22][23][24][25] 4 | CONCLUSIONS In summary, a new conceptional one-dimensional Cu-MOF-filler-reinforced gel polymer electrolyte was proposed and prepared for the first time. The design methodology takes advantage of both the unique onedimensional fibrous intertwined structure and abundant nanochannels of the Cu-MOF fillers, which plays a key role to solve major issues of gel polymer-based Li metal batteries.…”

“…In addition, the cell maintained 97% of the initial capacity at 1 C for over 800 cycles with high Coulombic efficiency of 99.49% (Figure 5c), suggesting superior cycling stability, which is even comparable to the performance of liquid‐electrolyte LIBs using LiFePO 4 (Figure 5d). 16–25 …”

Gravure‐Printed Conversion/Alloying Anodes for Lithium‐Ion Batteries

“…[ 20–24 ] More recently, we successfully fabricated positive electrodes (cathodes) for LIBs by gravure printing, obtaining high performance and reproducibility as well as long cycle life. [ 25 ] These preliminary results demonstrate that gravure printing of electrodes and, in perspective, full cells (multiple‐layer printing) can be potentially useful for industrial production. Moreover, thanks to the achievable high quality of the gravure‐printed layer, the technique can be also considered a very versatile tool for the study and development of new battery materials because the deposition technique largely influences their performance.…”

Composite Electrolyte & Electrode Membranes for Electrochemical Energy Storage & Conversion Devices

“…The contribution by Montanino et al [ 9 ] proposes the realization of LiFePO 4 cathode tapes through gravure printing. This technique, even if it is one of the most appealing for realizing functional layers, has not been investigated in detail until now.…”