Increasing demand for flexible devices in various applications, such as smart watches, healthcare, and military applications, requires the development of flexible energy-storage devices, such as lithium-ion batteries (LIBs) with high flexibility and capacity. However, it is difficult to ensure high capacity and high flexibility simultaneously through conventional electrode preparation processes. Herein, smart conductive textiles are employed as current collectors for flexible LIBs owing to their inherent flexibility, fibrous network, rough surface for better adhesion, and electrical conductivity. Conductivity and flexibility are further enhanced by nanosizing lithium titanate oxide (LTO) and lithium iron phosphate (LFP) active materials, and hybridizing them with a flexible 2D graphene template. The resulting LTO/LFP full cells demonstrate high areal capacity and flexibility with tolerance to mechanical fatigue. The battery achieves a capacity of 1.2 mA h cm−2 while showing excellent flexibility. The cells demonstrate stable open circuit voltage retention under repeated flexing for 1000 times at a bending radius of 10 mm. The discharge capacity of the unflexed battery is retained in cells subjected to bending for 100 times at bending radii of 30, 20, and 10 mm, respectively, confirming that the suggested electrode configuration successfully prevents structural damage (delamination or cracking) upon repeated deformation. Smart conductive textiles are employed as current collectors for electrodes of flexible lithium-ion batteries. The inherent flexibility, fibrous internal structure, and conductivity of the fabrics enable highly flexible, high areal capacity lithium-ion batteries. These flexible batteries display enhanced tolerance to mechanical fatigue upon prolonged bending stress exposure caused by repeated deformation.

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bending radius lithiumion smart conductive textiles full flexibility fibrous internal structure batteries lithium titanate oxide mechanical open circuit voltage retention electrode preparation structural damage energystorage devices iron phosphate battery fibrous network rough surface libs fabrics 2d graphene electrical conductivity collectors

Sung Hoon Ha, Hae Won Park, Kyu Hang Shin, Yun Jung Lee,.Flexible Lithium-Ion Batteries with High Areal Capacity Enabled by Smart Conductive Textiles. 14 (5),.

Sung Hoon Ha, et al."Flexible Lithium-Ion Batteries with High Areal Capacity Enabled by Smart Conductive Textiles" 14

Sung Hoon Ha, Hae Won Park, Kyu Hang Shin, Yun Jung Lee,"Flexible Lithium-Ion Batteries with High Areal Capacity Enabled by Smart Conductive Textiles"