期刊
NANO ENERGY
卷 39, 期 -, 页码 590-600出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nanoen.2017.07.033
关键词
All-solid-state battery; Flexible battery; Piezo-electrolyte; Self-charging; Power cell
类别
资金
- National Natural Science Foundation of China [11674048]
- Fundamental Research Funds for the Central Universities [N150505001, N160502002]
- Liaoning Natural Science Foundation [2015021009]
- Liaoning BaiQianWan Talents Program [2014921017]
A new all-solid-state self-charging power cell (SCPC) has been fabricated using mesoporous PVDF-LiPF6 film as piezo-electrolyte. The solid piezo-electrolyte can act as both the electrolyte and piezo-separator, which is prepared through immobilizing the liquid electrolyte in mesoporous PVDF film. The all-solid-state flexible SCPC can be efficiently charged up by mechanical deformation, and thus can directly harvest/store the body-motion energy. The SCPC sealed in stainless-steel cell can be charged by compressive deformation (30 N, 1 Hz) and the storage capacity is 0.118 mu A h within 240 s, which is about 5 times larger than that of the traditional non-integrated system. The SCPC sealed in flexible shell can be charged by the bending deformation. The all-solid-state flexible SCPCs can power a variety of wearable electronic devices, including sports bracelets, smart watches and LEDs. This work provides an innovative approach for developing new self-sustainable battery and self-powered wearable electronics.
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