TY  - JOUR
PY  - 2013//
TI  - Harvesting energy from natural vibration of human walking
JO  - ACS nano
A1  - Wang, Zhong Lin
A1  - Cao, Xia
A1  - Jing, Qingshen
A1  - Su, Yuanjie
A1  - Zhu, Guang
A1  - Chen, Jun
A1  - Yang, Weiqing
A1  - Bai, Peng
A1  - Yang, Jin
SP  - 11317
EP  - 11324
VL  - 7
IS  - 12
N2  - Triboelectric nanogenerator (TENG), a unique technology for harvesting ambient mechanical energy based on triboelectric effect, has been proven to be a cost-effective, simple and robust approach for self-powered systems. However, a general challenge is that the output current is usually low. Here, we demonstrated a rationally designed TENG with integrated rhombic gridding, which greatly improved the total current output owing to the structurally multiplied unit cells connected in parallel. With the hybridization of both the contact-separation mode and sliding electrification mode among nanowire arrays and nanopores fabricated onto the surfaces of two contact plates, the newly designed TENG produces an open-circuit voltage up to 428 V, and a short-circuit current of 1.395 mA with the peak power density of 30.7 W/m2. Relying on the TENG, a self-powered backpack was developed with a vibration-to-electric energy conversion efficiency up to 10.6%. And it was also demonstrated as a direct power source for instantaneously lighting up 40 commercial light-emitting diodes by harvesting the vibration energy from natural human walking. The newly designed TENG can be a mobile power source for field engineers, explorers, and disaster-relief workers.<p />  <p>Language: en</p>
LA  - en
SN  - 1936-0851
UR  - http://dx.doi.org/10.1021/nn405175z
ID  - ref1
ER  -