A 700 W⋅h⋅kg−1 Rechargeable Pouch Type Lithium Battery

• Published in: Chinese physics letters Vol. 40; no. 4; pp. 48201 - 48206
• Main Authors: Li, Quan, Yang, Yang, Yu, Xiqian, Li, Hong
• Format: Journal Article
• Language: English
• Published: Chinese Physical Society and IOP Publishing Ltd 01.03.2023
• ISSN: 0256-307X; 1741-3540
• DOI: 10.1088/0256-307X/40/4/048201

High-energy-density rechargeable lithium batteries are being pursued by researchers because of their revolutionary potential nature. Current advanced practical lithium-ion batteries have an energy density of around 300 W⋅h⋅kg −1 . Continuing to increase the energy density of batteries to a higher level could lead to a major explosion development in some fields, such as electric aviation. Here, we have manufactured practical pouch-type rechargeable lithium batteries with both a gravimetric energy density of 711.3 W⋅h⋅kg −1 and a volumetric energy density of 1653.65 W⋅h⋅L −1 . This is achieved through the use of high-performance battery materials including high-capacity lithium-rich manganese-based cathode and thin lithium metal anode with high specific energy, combined with extremely advanced process technologies such as high-loading electrode preparation and lean electrolyte injection. In this battery material system, the structural stability of cathode material in a widened charge/discharge voltage range and the deposition/dissolution behavior of interfacial modified thin lithium electrode are studied.