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<p>Wearable electronics necessitate flexible, safe, and high-efficiency energy storage systems to power integrated sensors for real-time health monitoring; however, traditional metal-ion supercapacitors are hindered by limited energy density, mechanical rigidity, and safety issues for skin-contact applications. To tackle these issues, a band-aid-style portable AIHSC was created utilizing a Ti₃C₂Tₓ/ WSe<sub>2</sub> nanocomposite for positive electrode, activated carbon for negative electrode, and a PVA/(NH₄)₂SO₄ gel electrolyte on flexible textile substrate. The Ti₃C₂Tₓ/WSe<sub>2</sub> heterostructure was synthesized to synergistically improve electrical conductivity, ion transport, and pseudocapacitive charge storage, while flexible electrodes were produced using a scalable doctor-blade coating method. The electrochemical assessment demonstrated that Ti₃C₂Tₓ/WSe<sub>2</sub> electrode exhibited a substantial specific capacitance of 252&#xa0;F g⁻¹ in 1&#xa0;M (NH₄)₂SO₄, whereas the constructed AIHSC attained a specific power density of 1332&#xa0;W kg⁻¹, capacitance of 120&#xa0;F g⁻¹, and an energy density of 60 Wh kg⁻¹, maintaining 92% of its initial capacitance after 20,000 charge-discharge cycles with a coulombic efficiency of 95%. The device demonstrated exceptional mechanical durability, sustaining consistent performance at bending angles of up to 180° and preserving over 82% capacitance after 5000 bending cycles. The AIHSC effectively powered wearable pressure and glucose sensors, proving its viability as a self-sustaining, adaptable, and biocompatible energy source for advanced wearable healthcare and real-time biosensing applications.</p>

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Mechanically robust Ti₃C₂Tₓ/WSe₂ asymmetric hybrid supercapacitor for high-energy wearable biosensing systems

  • 期刊论文

  • 发表日期：

    2026年5月11日

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  • Arul Natarajan,
  • Aman Kumar,
  • Jarupula Somlal,
  • Mit C. Patel,
  • Narayanaswamy Rakesh,
  • Arumugam Thanikasalam

摘要

Wearable electronics necessitate flexible, safe, and high-efficiency energy storage systems to power integrated sensors for real-time health monitoring; however, traditional metal-ion supercapacitors are hindered by limited energy density, mechanical rigidity, and safety issues for skin-contact applications. To tackle these issues, a band-aid-style portable AIHSC was created utilizing a Ti₃C₂Tₓ/ WSe2 nanocomposite for positive electrode, activated carbon for negative electrode, and a PVA/(NH₄)₂SO₄ gel electrolyte on flexible textile substrate. The Ti₃C₂Tₓ/WSe2 heterostructure was synthesized to synergistically improve electrical conductivity, ion transport, and pseudocapacitive charge storage, while flexible electrodes were produced using a scalable doctor-blade coating method. The electrochemical assessment demonstrated that Ti₃C₂Tₓ/WSe2 electrode exhibited a substantial specific capacitance of 252 F g⁻¹ in 1 M (NH₄)₂SO₄, whereas the constructed AIHSC attained a specific power density of 1332 W kg⁻¹, capacitance of 120 F g⁻¹, and an energy density of 60 Wh kg⁻¹, maintaining 92% of its initial capacitance after 20,000 charge-discharge cycles with a coulombic efficiency of 95%. The device demonstrated exceptional mechanical durability, sustaining consistent performance at bending angles of up to 180° and preserving over 82% capacitance after 5000 bending cycles. The AIHSC effectively powered wearable pressure and glucose sensors, proving its viability as a self-sustaining, adaptable, and biocompatible energy source for advanced wearable healthcare and real-time biosensing applications.