Scalable piezoelectrochemical energy harvesting via Li-ion battery-based DEECs with laser-patterned electrodes.

Md Abdul Aziz, Ahsan Khan, Naba K Karan, SeungYeon Kang

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In one paragraph

Article in iScience, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

4 authors.

Md Abdul AzizSchool of Mechanical, Aerospace, and Manufacturing Engineering, University of Connecticut, Storrs, CT, USA.

Ahsan KhanSchool of Mechanical, Aerospace, and Manufacturing Engineering, University of Connecticut, Storrs, CT, USA.

Naba K KaranDepartment of Materials Science and Engineering, University of Connecticut, Storrs, CT, USA.

SeungYeon KangSchool of Mechanical, Aerospace, and Manufacturing Engineering, University of Connecticut, Storrs, CT, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Piezoelectrochemical energy harvesting converts mechanical compression into electrical output through stress-coupled electrochemistry in lithium-ion systems. Here, we study lithium-ion battery-based distributed embedded energy converters (DEECs) as unit cells in DEEC-Tec metamaterials and examine how interconnection topology and electrode microarchitecture affect performance under 10 MPa loading. For commercial pouch cells, harvested energy increased from 153 to 395 μJ/cycle in series and from 101 to 204 μJ/cycle in parallel as the number of units increased from one to four, while a hybrid series-parallel network delivered the best performance (501 μJ/cycle; 16.73 nW/Ah). For laboratory-fabricated cells, laser-patterned electrodes improved harvested energy and capacity-normalized output by 84.5% despite an 18%-19% capacity loss. Electrochemical impedance spectroscopy showed 89.8% lower solid-electrolyte interphase resistance, 18.1% lower charge-transfer resistance, and 77.7% lower total resistance. These results show that topology and electrode microstructure can jointly improve scalable low-frequency piezoelectrochemical energy harvesting.

Indexed as

electrochemical impedance spectroscopyelectrode laser patterninglithium-ion batterieslow-frequency energy harvestingmechanical energy harvestingmetamaterialspiezoelectrochemical effect

Identifiers

PMID42820246

DOI10.1016/j.isci.2026.117319

PMCPMC13626795

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.