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A Nearly Packaging‐Free Design Paradigm for Light, Powerful, and Energy‐Dense Primary Microbatteries
Author(s) -
Yue Xiujun,
Johnson Alissa C.,
Kim Sungbong,
Kohlmeyer Ryan R.,
Patra Arghya,
Grzyb Jessica,
Padmanabha Akaash,
Wang Min,
Jiang Zhimin,
Sun Pengcheng,
Kiggins Chadd T.,
Ates Mehmet N.,
Singh Sonika V.,
Beale Evan M.,
Daroux Mark,
Blake Aaron J.,
Cook John B.,
Braun Paul V.,
Pikul James H.
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202101760
Subject(s) - materials science , cathode , anode , power density , electronics , energy storage , wearable technology , energy density , nanotechnology , optoelectronics , electroplating , electrical engineering , engineering physics , power (physics) , wearable computer , layer (electronics) , computer science , embedded system , engineering , electrode , chemistry , physics , quantum mechanics
Abstract Billions of internet connected devices used for medicine, wearables, and robotics require microbattery power sources, but the conflicting scaling laws between electronics and energy storage have led to inadequate power sources that severely limit the performance of these physically small devices. Reported here is a new design paradigm for primary microbatteries that drastically improves energy and power density by eliminating the vast majority of the packaging and through the use of high‐energy‐density anode and cathode materials. These light (50–80 mg) and small (20–40 µL) microbatteries are enabled though the electroplating of 130 µm‐thick 94% dense additive‐free and crystallographically oriented LiCoO 2 onto thin metal foils, which also act as the encapsulation layer. These devices have 430 Wh kg −1 and 1050 Wh L −1 energy densities, 4 times the energy density of previous similarly sized microbatteries, opening up the potential to power otherwise unpowerable microdevices.

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