Low-Cost High-Energy Potassium Cathode

Xue, Leigang; Li, Yutao; Gao, Hongcai; Zhou, Weidong; Lü, Xujie; Kaveevivitchai, Watchareeya; Manthiram, Arumugam; Goodenough, John B.

doi:10.1021/jacs.6b12598

Title: Low-Cost High-Energy Potassium Cathode

Journal Article · 26 January 2017 · Journal of the American Chemical Society

DOI: https://doi.org/10.1021/jacs.6b12598 · OSTI ID:1352429

^[1]; Li, Yutao ^[1];

^[1]; Zhou, Weidong ^[1];

^[2]; Kaveevivitchai, Watchareeya ^[1]; Manthiram, Arumugam ^[1];

^[1]

Univ. of Texas, Austin, TX (United States). Texas Materials Inst.
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Potassium has as rich an abundance as sodium in the earth, but the development of a K-ion battery is lagging behind because of the higher mass and larger ionic size of K⁺ than that of Li⁺ and Na⁺, which makes it difficult to identify a high-voltage and high-capacity intercalation cathode host. Here we propose a cyanoperovskite K_xMnFe(CN)₆ (0 ≤ x ≤ 2) as a potassium cathode: high-spin Mn^III/Mn^II and low-spin Fe^III/Fe^II couples have similar energies and exhibit two close plateaus centered at 3.6 V; two active K⁺ per formula unit enable a theoretical specific capacity of 156 mAh g^-1; Mn and Fe are the two most-desired transition metals for electrodes because they are cheap and environmental friendly. As a powder prepared by an inexpensive precipitation method, the cathode delivers a specific capacity of 142 mAh g^-1. Lastly, the observed voltage, capacity, and its low cost make it competitive in large-scale electricity storage applications.

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Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)

Grant/Contract Number:: AC52-06NA25396l; SC0005397; CBET-1438007; 7223523

OSTI ID:: 1352429

Report Number(s):: LA-UR-17-20899

Journal Information:: Journal of the American Chemical Society, Vol. 139, Issue 6; ISSN 0002-7863

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 405 works

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A High-Energy-Density Potassium Battery with a Polymer-Gel Electrolyte and a Polyaniline Cathode Gao, Hongcai; Xue, Leigang; Xin, Sen Angewandte Chemie International Edition, Vol. 57, Issue 19 https://doi.org/10.1002/anie.201802248	journal	April 2018
Aluminum Chloride-Graphite Batteries with Flexible Current Collectors Prepared from Earth-Abundant Elements Wang, Shutao; Kravchyk, Kostiantyn V.; Filippin, Alejandro N. ETH Zurich https://doi.org/10.3929/ethz-b-000261505	text	January 2018
Room-Temperature Liquid Na-K Anode Membranes Xue, Leigang; Zhou, Weidong; Xin, Sen Angewandte Chemie International Edition, Vol. 57, Issue 43 https://doi.org/10.1002/anie.201809622	journal	October 2018
Aluminum Chloride-Graphite Batteries with Flexible Current Collectors Prepared from Earth-Abundant Elements Wang, Shutao; Kravchyk, Kostiantyn V.; Filippin, Alejandro N. Advanced Science, Vol. 5, Issue 4 https://doi.org/10.1002/advs.201700712	journal	January 2018
Highly nitrogen doped carbon nanofibers with superior rate capability and cyclability for potassium ion batteries Xu, Yang; Zhang, Chenglin; Zhou, Min Nature Communications, Vol. 9, Issue 1 https://doi.org/10.1038/s41467-018-04190-z	journal	April 2018
A fluoroxalate cathode material for potassium-ion batteries with ultra-long cyclability Ji, Bifa; Yao, Wenjiao; Zheng, Yongping Nature Communications, Vol. 11, Issue 1 https://doi.org/10.1038/s41467-020-15044-y	journal	March 2020
Titanium-based potassium-ion battery positive electrode with extraordinarily high redox potential Fedotov, Stanislav S.; Luchinin, Nikita D.; Aksyonov, Dmitry A. Nature Communications, Vol. 11, Issue 1 https://doi.org/10.1038/s41467-020-15244-6	journal	March 2020
Highly reversible potassium-ion intercalation in tungsten disulfide Zhang, Ruding; Bao, Jingze; Pan, Yilong Chemical Science, Vol. 10, Issue 9 https://doi.org/10.1039/c8sc04350g	journal	January 2019

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