4.6 Article

Lithium-Ion Thermal Charging Cell with Giant Thermopower for Low-Grade Heat Harvesting

Journal

BATTERIES & SUPERCAPS
Volume -, Issue -, Pages -

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/batt.202200331

Keywords

lithium-ion thermal charging cell; low-grade heat; porous nanofibers; reaction mechanism; thermoelectrochemical performance

Funding

  1. Leading Edge Technology of Jiangsu Province [BK20202008, BK20220009]
  2. National Natural Science Foundation of China [U1802256, 21773118, 21875107]
  3. Postgraduate Research & Practice Innovation Program of Jiangsu Province [KYCX21_ 0204]
  4. Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)

Ask authors/readers for more resources

In this study, a lithium-ion thermal charging cell was developed using a lithium anode and electrospun zinc vanadate@carbon nanofiber cathode, which is capable of continuously converting low-grade heat into electricity, while achieving high output voltage and heat-to-electricity efficiency.
Liquid-based thermoelectric cells integrate energy harvesting and storage technology, becoming the focus of energy fields. However, the simultaneous implement of high output voltage and heat-to-electricity efficiency is still challenging. Herein, we propose a lithium-ion thermal charging cell using lithium anode and electrospun zinc vanadate@carbon nanofiber cathode. Benefitting from the superior performance of electrode and the significant difference between the size of cation and anion in electrolyte, such system can continuously realize the harvesting and conversion of low-grade heat into electricity. Consequently, an open-circuit voltage of about 2.1 V can be generated at a low temperature gradient of 25 K together with an ultrahigh thermopower of 47.9 mVK(-1) and a remarkable power density of 9.2 Wm(-2). Moreover, an impressive Carnot-related efficiency (5.2%) can be achieved under same conditions. This work confirms the superiority of organic thermoelectric system and provides a new insight to develop promising thermal charging cell for sustainable applications.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available