A "Blockchain" Synergy in Conductive Polymer-Filled Metal-Organic Frameworks for Dendrite-Free Li Plating/Stripping with High Coulombic Efficiency.

Ma, Yong; Wei, Le; He, Ying; Yuan, Xuzhou; Su, Yanhui; Gu, Yuting; Li, Xinjian; Zhao, Xiaohui; Qin, Yongze; Mu, Qiaoqiao; Peng, Yang; Sun, Yang; Deng, Zhao

Ma, Yong; Wei, Le; He, Ying; Yuan, Xuzhou; Su, Yanhui; Gu, Yuting; Li, Xinjian; Zhao, Xiaohui; Qin, Yongze; Mu, Qiaoqiao; Peng, Yang; Sun, Yang; Deng, Zhao.

Afiliación

Ma Y; Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, College of Energy, Soochow University, Suzhou, 215006, P. R. China.
Wei L; Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, College of Energy, Soochow University, Suzhou, 215006, P. R. China.
He Y; Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, College of Energy, Soochow University, Suzhou, 215006, P. R. China.
Yuan X; Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, College of Energy, Soochow University, Suzhou, 215006, P. R. China.
Su Y; Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, College of Energy, Soochow University, Suzhou, 215006, P. R. China.
Gu Y; Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, College of Energy, Soochow University, Suzhou, 215006, P. R. China.
Li X; Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, College of Energy, Soochow University, Suzhou, 215006, P. R. China.
Zhao X; Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, College of Energy, Soochow University, Suzhou, 215006, P. R. China.
Qin Y; Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, College of Energy, Soochow University, Suzhou, 215006, P. R. China.
Mu Q; Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, College of Energy, Soochow University, Suzhou, 215006, P. R. China.
Peng Y; Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, College of Energy, Soochow University, Suzhou, 215006, P. R. China.
Sun Y; School of Materials, Sun Yat-sen University, Guangzhou, 510006, P. R. China.
Deng Z; Soochow Institute for Energy and Materials Innovations, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, College of Energy, Soochow University, Suzhou, 215006, P. R. China.

Angew Chem Int Ed Engl ; 61(12): e202116291, 2022 Mar 14.

Article en En | MEDLINE | ID: mdl-34985828

ABSTRACT

ABSTRACT

The performance of lithium-metal batteries is severely hampered by uncontrollable dendrite growth and volume expansion on the metal anodes. Inspired by the "blockchain" concept in data mining, here we utilize a conductive polymer-filled metal-organic framework (MOF) as the lithium host, in which polypyrrole (PPy) serves as the "chain" to interlink Li "blocks" stored in the MOF pores. While the N-rich PPy guides fast Li+ infiltration/extrusion and serves as the nucleation sites for isotropic Li growth, the MOF pores compartmentalize bulk Li deposition for 3D matrix Li storage, leading to low-barrier and dendrite-free Li plating/stripping with superb Coulombic efficiency. The as-fabricated lithium-metal anodes operate over 700âcycles at 5âmA cm-2 in symmetric cells, and 800 cycles at 1âC in full cells with a per-cycle capacity loss of only 0.017 %. This work might open a new chapter for Li-metal anode construction by introducing the concept of "blockchain" management of Li plating/stripping.

Palabras clave

Blockchain; Dendrite-Free; Lithium Metal Anodes; MOFs; Polypyrrole

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