Review of the structure and performance of through-holed anodes and cathodes prepared with a picosecond pulsed laser for lithium-ion batteries

Abstract

To move the performance of lithium-ion batteries into the next stage, the modification of the structure of cells is the only choice except for the development of materials exhibiting higher performance. In this review paper, the employment of through-holing structures of anodes and cathodes prepared with a picosecond pulsed laser has been proposed. The laser system and the structure for improving the battery performance were introduced. The performance of laminated cells constructed with through-holed anodes and cathodes was reviewed from the viewpoints of the improvement of high-rate performance and energy density, removal of unbalanced capacities on both sides of the current collector, even greater high-rate performance by hybridizing cathode materials and removal of irreversible capacity. In conclusion, the points that should be examined and the problem for the through-holed structure to be in practical use are summarized.

Development of a roll-to-roll high-speed laser micro processing machine for preparing through-holed anodes and cathodes of lithium-ion batteries

“…The EDX mapping in figure 8 shows the distribution of Al and Cu atoms on cross sections of a through-holed LFP cathode and graphite anode. When compared with the through-holed anode and cathode prepared in our previous study with a laser processing system based on a rotating polygon mirror or galvanometer mirror [17], Al and Cu atoms were not redeposited on the inner wall of the holes on the side of the laser emission plane in the present laser system. Conversely, for through-holes prepared with our previous laser processing system, Al and Cu atoms were distributed in the holes on the laser incidence side because the tips of the holes grow and advance little by little with each weak shot of the laser beam [17].…”

“…In addition, through-holed layers have cracks and voids formed by laser irradiation. The cracks and voids have improved the high-rate performance because the electrolyte solution directly contacts the active material particle surfaces, which increases the interaction and deintercalation of Li + ions to/from these surfaces [17]. There are many papers in which the three-dimensional laser processing of cathode and anode layers improved the remarkable high-rate performance of LIBs [18][19][20][21][22][23].…”

The Impact of Structural Pattern Types on the Electrochemical Performance of Ultra-Thick NMC 622 Electrodes for Lithium-Ion Batteries

“…The geometrical changes in laser-patterned thick-film electrodes contribute to reduced electronic and ionic resistances and a decreased tortuosity [25]. In addition, the Li-ion diffusion kinetics are increased due to the channels and holes generated inside laser-patterned electrodes filled with a liquid electrolyte [46,47].…”

Materials Nanoarchitectonics at Dynamic Interfaces: Structure Formation and Functional Manipulation

“…Various batteries, such as lithium-ion batteries [ 394 , 395 , 396 , 397 , 398 ] and potassium-ion batteries [ 399 , 400 , 401 ], have attracted significant attention. Zinc-ion batteries have the advantage of high safety and have also attracted attention from those focused on environmental protection [ 402 , 403 , 404 , 405 ].…”

“…The dynamic liquid crystal transition strategy can be a general method to achieve both delayed crystallization and spontaneous lower interface healing in a single step in the solution processing of thin film semiconductors. Various batteries, such as lithium-ion batteries [394][395][396][397][398] and potassium-ion batteries [399][400][401], have attracted significant attention. Zinc-ion batteries have the advantage of high safety and have also attracted attention from those focused on environmental protection [402][403][404][405].…”