An enhanced distance-dependent electric field model for contact-separation triboelectric nanogenerator: Air-breakdown limit as a case study
عرض / فتح
التاريخ
2023المؤلف
Ahmed, Anas A.Abdullah, Hasan M.
Qahtan, Talal F.
Muthalif, Asan G.A.
Nafea, Marwan
Mohamed Ali, Mohamed Sultan
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البيانات الوصفية
عرض كامل للتسجيلةالملخص
Theoretical models have been proposed to bring an in-depth understanding of the working mechanisms of
triboelectric nanogenerators (TENGs), aiming to enhance their output performance. This work proposes an
enhanced distance-dependent electric field (EDDEF) model to predict triboelectric characteristics of TENGs more
accurately. The model bridges the gap between the distance-dependent and distance-independent electric field
models in terms of open-circuit (OC) voltage (VOC), short-circuit (SC) voltage (Vgap,SC), and SC surface charge
density (σSC) at small separation distances by developing more accurate mathematical formulations of the
electric potential. The EDDEF model was validated by finite element modeling (FEM) simulation. It introduced
an accurate theoretical analysis of the air-breakdown boundary under the OC condition for the first time. The
maximum surface charge density that can be obtained without air breakdown was predicted to be lateral sizedependent. It shows a monotonical decrease from 51.94 to 33.59 µC/m2 with a lateral size increase from 0.5
to 10 cm. Meanwhile, the corresponding separation distance increased from 0.915 to 12.48 mm, suggesting that
improving CS-TENG’s performance by boosting the surface charge density is more effective at smaller lateral
sizes and shorter separation distances. These findings serve as a guide towards the miniaturization of highly
efficient CS-TENG technology. In addition, under SC condition, the EDDEF model showed great consistency with
the distance-independent model in predicting the air-breakdown limit, supporting the distance-independent
model applicability for predicting the air-breakdown under the CS condition
المجموعات
- الهندسة الكهربائية [2611 items ]
- الهندسة الميكانيكية والصناعية [1339 items ]