Flexible self-charging lithium battery for storing low-frequency mechanical energy

Recent Progress on Structure Manipulation of Poly(vinylidene fluoride)‐Based Ferroelectric Polymers for Enhanced Piezoelectricity and Applications

“…Reproduced with permission. [ 244 ] Copyright 2021, Elsevier Ltd. h) Schematic illustration of patterned piezo‐electrochromic tactile‐sensation display integrating flexible piezoelectric strain sensor and electrochromic array modulus as a tactile sensation system. Reproduced with permission.…”

“…developed a novel flexible self‐charging battery (SCPB) by obtaining porous P(VDF‐TrFE) films through an electrostatic spinning process (Figure 12g). [ 244 ] The SCPB can convert the small amounts of mechanical energy generated by human motion into electrical energy, and has the potential to charge wearable electronic devices. Bi et al.…”

“…Piezoelectric PVDF-based polymers have been widely applied in various fields due to its high piezoelectric coefficient, lightweight, and high mechanical flexibility. [240] These applications include energy harvesters, [135] piezoelectric sensors, [241] actuators, [242,243] flexible self-charging batteries, [244,245] etc. There have been numerous studies and reviews conducted in these fields; [4,196,246,247] however, most of them have focused on the composites of PVDF or its copolymers and ceramics.…”

Recent Progress of Energy-Storage-Device-Integrated Sensing Systems

“…In addition, storing mechanical energy in batteries has also proven to be effective. A novel flexible self-charging power cell (SCPC) was prepared based on electrospinning fluoride-trifluoro ethylene (P(VDF-TrFE)) porous membranes as the piezoelectric separator and supporting layer of the electrode [ 85 ] ( Figure 4 d). The SCPC sealed in a flexible case could harvest and store the tiny movement energy of human body under low frequency and low pressure, which charged itself up to a storage capacity of 0.092 μA h in 330 s by compression (6 N,1 HZ) ( Figure 4 e(i)).…”

Superior Effect of Si Doping on Interfacial Reaction of LiPON Solid Electrolyte for the Silicon-Rich Oxide (SiO1/2) Anode in All-Solid-State Batteries: A First-Principles Prediction

“…With ever-expanding markets of portable electronics and electric vehicles, the demands for a lithium-ion battery (LIB) drastically increase because of its high density of energy, long-cycle stability, and maturity in applications. − However, LIBs are still facing serious challenges including electrolyte leakage and poor performances at high temperature. , In view of these concerns, an all-solid-state battery (ASSB) using a solid-state electrolyte (SSE) can address the safety issues and achieve satisfactory performance at high temperatures and is regarded as one of the future innovation technologies for LIBs. − An ASSB cell using Li 3 PS 4 –LiI glass electrolyte achieved a life cycle of 3400 h at 100 °C and the highest areal capacity of 7.5 mAh/cm 2 . A solid Li–S battery was proposed by a conversion–intercalation hybrid cathode, exhibiting a sulfur utilization of 85% and a high areal capacity of 7.8 mAh/cm 2 …”