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A Liquid-Metal-Enabled Versatile Organic Alkali-Ion Battery.
Adv Mater 2019; 31(11):e1806956AM

Abstract

Despite the high specific capacity and low redox potential of alkali metals, their practical application as anodes is still limited by the inherent dendrite-growth problem. The fusible sodium-potassium (Na-K) liquid metal alloy is an alternative that detours this drawback, but the fundamental understanding of charge transport in this binary electroactive alloy anode remains elusive. Here, comprehensive characterization, accompanied with density function theory (DFT) calculations, jointly expound the Na-K anode-based battery working mechanism. With the organic cathode sodium rhodizonate dibasic (SR) that has negligible selectivity toward cations, the charge carrier is screened by electrolytes due to the selective ionic pathways in the solid electrolyte interphase (SEI). Stable cycling for this Na-K/SR battery is achieved with capacity retention per cycle to be 99.88% as a sodium-ion battery (SIB) and 99.70% as a potassium-ion battery (PIB) for over 100 cycles. Benefitting from the flexibility of the liquid metal and the specially designed carbon nanofiber (CNF)/SR layer-by-layer cathode, a flexible dendrite-free alkali-ion battery is achieved with an ultrahigh areal capacity of 2.1 mAh cm-2 . Computation-guided materials selection, characterization-supported mechanistic understanding, and self-validating battery performance collectively promise the prospect of a high-performance, dendrite-free, and versatile organic-based liquid metal battery.

Authors+Show Affiliations

Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin, TX, 78712, USA.Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin, TX, 78712, USA.Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin, TX, 78712, USA.Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin, TX, 78712, USA.Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin, TX, 78712, USA.Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin, TX, 78712, USA.Materials Science and Engineering Program and Department of Mechanical Engineering, The University of Texas at Austin, TX, 78712, USA.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30663151

Citation

Ding, Yu, et al. "A Liquid-Metal-Enabled Versatile Organic Alkali-Ion Battery." Advanced Materials (Deerfield Beach, Fla.), vol. 31, no. 11, 2019, pp. e1806956.
Ding Y, Guo X, Qian Y, et al. A Liquid-Metal-Enabled Versatile Organic Alkali-Ion Battery. Adv Mater Weinheim. 2019;31(11):e1806956.
Ding, Y., Guo, X., Qian, Y., Zhang, L., Xue, L., Goodenough, J. B., & Yu, G. (2019). A Liquid-Metal-Enabled Versatile Organic Alkali-Ion Battery. Advanced Materials (Deerfield Beach, Fla.), 31(11), pp. e1806956. doi:10.1002/adma.201806956.
Ding Y, et al. A Liquid-Metal-Enabled Versatile Organic Alkali-Ion Battery. Adv Mater Weinheim. 2019;31(11):e1806956. PubMed PMID: 30663151.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A Liquid-Metal-Enabled Versatile Organic Alkali-Ion Battery. AU - Ding,Yu, AU - Guo,Xuelin, AU - Qian,Yumin, AU - Zhang,Leyuan, AU - Xue,Leigang, AU - Goodenough,John B, AU - Yu,Guihua, Y1 - 2019/01/21/ PY - 2018/10/28/received PY - 2018/12/12/revised PY - 2019/1/22/pubmed PY - 2019/1/22/medline PY - 2019/1/22/entrez KW - flexible batteries KW - liquid metals KW - organic electrodes KW - potassium-ion batteries KW - sodium-ion batteries SP - e1806956 EP - e1806956 JF - Advanced materials (Deerfield Beach, Fla.) JO - Adv. Mater. Weinheim VL - 31 IS - 11 N2 - Despite the high specific capacity and low redox potential of alkali metals, their practical application as anodes is still limited by the inherent dendrite-growth problem. The fusible sodium-potassium (Na-K) liquid metal alloy is an alternative that detours this drawback, but the fundamental understanding of charge transport in this binary electroactive alloy anode remains elusive. Here, comprehensive characterization, accompanied with density function theory (DFT) calculations, jointly expound the Na-K anode-based battery working mechanism. With the organic cathode sodium rhodizonate dibasic (SR) that has negligible selectivity toward cations, the charge carrier is screened by electrolytes due to the selective ionic pathways in the solid electrolyte interphase (SEI). Stable cycling for this Na-K/SR battery is achieved with capacity retention per cycle to be 99.88% as a sodium-ion battery (SIB) and 99.70% as a potassium-ion battery (PIB) for over 100 cycles. Benefitting from the flexibility of the liquid metal and the specially designed carbon nanofiber (CNF)/SR layer-by-layer cathode, a flexible dendrite-free alkali-ion battery is achieved with an ultrahigh areal capacity of 2.1 mAh cm-2 . Computation-guided materials selection, characterization-supported mechanistic understanding, and self-validating battery performance collectively promise the prospect of a high-performance, dendrite-free, and versatile organic-based liquid metal battery. SN - 1521-4095 UR - https://www.unboundmedicine.com/medline/citation/30663151/A_Liquid_Metal_Enabled_Versatile_Organic_Alkali_Ion_Battery_ L2 - https://doi.org/10.1002/adma.201806956 DB - PRIME DP - Unbound Medicine ER -