Universally Applicable and Ultra-Long Life Cyclic Power Generation Induced by Interfacial Ion-Oscillation.
basic_science · Level V
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- Record sourced from PubMed, PMID 40129075.
- Also identified by DOI 10.1002/adma.202420129.
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Abstract
Sustainable energy supply without relying on external power sources is one of the bottlenecks in achieving self-supportive wearable electronics and Internet-of-things (IoT) systems. Here a new type of universally applicable and ultra-long life cyclic power generation is developed induced by interfacial redox reaction-mediated ion-oscillation, which can provide cycling electric energy in a self-charging manner without extra pre-charge. Based on asymmetric manganese dioxide and molybdenum disulfide electrode pairs, the proof-concept electric potential difference power generating cell (EPDC) offers ultra-long life electric output over 8-month testing period for tens of thousands of cycles. A layer-stacking EPDC unit supplies a high direct current of more than 40 mA and a power density of ≈6 W m<sup>-2</sup>. Such recyclable power-generating process mainly relies on reversible ion migration at an asymmetric interface in response to relative variation of electric potentials. The universal applicability of EPDC is validated by a combination of diverse electrode pairs. Large-scale manufacture of EPDCs is achievable by industry-compatible auto-blade coating technology with on-demand power output, providing a long-acting power supply platform for self-charging electronic systems.