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Hierarchical Porous BiTe@C for Wide-Temperature-Range Aqueous Zn-Based Batteries with Air-Recharging Capability. | LitMetric

Hierarchical Porous BiTe@C for Wide-Temperature-Range Aqueous Zn-Based Batteries with Air-Recharging Capability.

ACS Nano

Center for Nanoscale Characterization & Devices (CNCD), Wuhan National Laboratory for Optoelectronics (WNLO) & School of Physics, Huazhong University of Science and Technology (HUST), Wuhan 430074, China.

Published: October 2024

AI Article Synopsis

  • * The study introduces efficient BiTe@C cathodes with a carbon paper substrate that enhance energy storage mechanisms, allowing for consistent battery performance in varying temperatures from -10 to 45 °C.
  • * The BiTe@C cathodes significantly improve air-rechargeability, achieving a discharge capacity of 264.20 mA h g after 11 hours of self-charging, and successfully powering devices like a timer and LED with rapid air self-charging.

Article Abstract

Air-rechargeable batteries integrating energy harvesting, conversion, and storage provide the most portable and popular approach to self-charging power systems. However, air-rechargeable batteries are currently mostly aqueous Zn-based battery systems in which it has remained a significant challenge to solve the low discharge capacities and poor cycling stability of chemical self-charging due to continuous insertion/extraction of large-size hydrated Zn. Herein, efficient BiTe@C cathodes with an active carbon paper substrate are developed. Further ex situ characterization analysis confirms the energy storage mechanism regarding the coexistence of H/Zn coinsertion and conversion reaction in the aqueous Zn||BiTe@C battery. Benefiting from the fast dynamics process attributed to the unique mechanism, a reliable energy supply is provided even in an extended temperature range from -10 to 45 °C. More importantly, BiTe@C cathodes boost the superior and repeatable air-rechargeability. A discharge capacity of up to 264.20 mA h g at 0.30 A g is manifested after self-charging for 11.00 h. In addition, two quasi-solid-state battery devices are connected in series to continuously power a timer. After the device is discharged and then air self-charged for just a few seconds, an LED is lit.

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Source
http://dx.doi.org/10.1021/acsnano.4c06446DOI Listing

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