Yutao Li

University of Chinese Academy of Sciences

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John B. Goodenough

The University of Texas at Austin

Weidong Zhou

Beijing University of Chemical Technology

Zhiming Cui

South China University of Technology

Nan Wu

Shaanxi Normal University

Jian Gao

Chinese Academy of Sciences

Sen Xin

Beijing National Laboratory for Molecular Sciences

Shaofei Wang

Yancheng Institute of Technology

Henghui Xu

Huazhong University of Science and Technology

Daiwei Yu

Massachusetts Institute of Technology

Ye Zhu

Hong Kong Polytechnic University

Cooperative Institutions

Chinese Academy of Sciences

University of Chinese Academy of Sciences

The University of Texas at Austin

Massachusetts Institute of Technology

Zhejiang University

Tsinghua University

University of Science and Technology of China

Wuhan University of Technology

Central South University

Xi'an Jiaotong University

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Emission properties of impregnated cathode with nanoparticle films

Acta Physica Sinica (2009)

Yanwen Liu Tian Hong Yong Han Zhu Hong Yutao Li

The Ir nano particle thin film was grown by dcrect current magnetron sputtering at room temperature. Microstructure of thin films grown at different sputtering pressures were measured by scanning electron microscopy. The results show that the particle size of the films depends on the deposition rate in the nucleation stage of Ir films and the deposition rate can be well controlled by sputtering pressure. A new kind of cathodes are fabricated from 25% porous tungsten impregnated with 6∶1∶2-type barium calcium aluminate and coated with the nano particulate Ir thin film. The coating processes produces a film thickness of 200—500 nm and the cathodes are fired in hydrogen atmosphere for ten minutes at 1200℃ to further improve the coating microstructure. The cathodes have been studied with thermal electron microscope by which the electron-optical picture of a thermal emission cathode could be obtained. Time of flight mass spectrometer （ToFMS） has been used in a study of evaporation from impregnated cathodes. The chemical composition of evaporation of various impregnated cathodes have been measured by ToFMS. The variation of ion current of evaporants from S-type cathode and M-type cathode （coated with iridium） and n-type cathode （coated with iridium nano-particle thin film） with temperature and time have been studied and discussed. Emission current characteristics have been measured as a function of voltage and temperature.

10.7498/aps.58.8635

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Citations (3)

In situ visualizing the interplay between the separator and potassium dendrite growth by synchrotron X-ray tomography

Nano Energy (2021)

Ling Ni Markus Osenberg Haijun Liu André Hilger Libao Chen

Separator (oil production)

10.1016/j.nanoen.2021.105841

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Citations (19)

Li metal deposition and stripping in a solid-state battery via Coble creep

Nature (2020)

Yuming Chen Ziqiang Wang Xiaoyan Li Xiahui Yao Chao Wang

Overpotential

10.1038/s41586-020-1972-y

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Citations (392)

Mastering the interface for advanced all-solid-state lithium rechargeable batteries

Proceedings of the National Academy of Sciences (2016)

Yutao Li Weidong Zhou Xi Chen Xujie Lü Zhiming Cui

A solid electrolyte with a high Li-ion conductivity and a small interfacial resistance against a Li metal anode is a key component in all-solid-state Li metal batteries, but there is no ceramic oxide electrolyte available for this application except the thin-film Li-P oxynitride electrolyte; ceramic electrolytes are either easily reduced by Li metal or penetrated by Li dendrites in a short time. Here, we introduce a solid electrolyte LiZr2(PO4)3 with rhombohedral structure at room temperature that has a bulk Li-ion conductivity σLi = 2 × 10-4 S⋅cm-1 at 25 °C, a high electrochemical stability up to 5.5 V versus Li+/Li, and a small interfacial resistance for Li+ transfer. It reacts with a metallic lithium anode to form a Li+-conducting passivation layer (solid-electrolyte interphase) containing Li3P and Li8ZrO6 that is wet by the lithium anode and also wets the LiZr2(PO4)3 electrolyte. An all-solid-state Li/LiFePO4 cell with a polymer catholyte shows good cyclability and a long cycle life.

Passivation

Fast ion conductor

10.1073/pnas.1615912113

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Citations (257)

High Voltage Stable Polyoxalate Catholyte with Cathode Coating for All‐Solid‐State Li‐Metal/NMC622 Batteries

Advanced Energy Materials (2020)

Xiangyu Pan Han Sun Zhaoxu Wang Hao Huang Qian Chang

Abstract The solid polymer electrolyte (SPE) is one type of the most promising solid‐state electrolytes for next‐generation solid‐state batteries, due to its good compatibility with Li‐metal, high flexibility, and safety. To compete with currently used conventional Li‐ion batteries in energy density, SPEs must be integrated with high energy density cathode of LiNi x Mn y Co z O 2 ( x + y + z = 1, 0.5 < x < 1) (NMC). However, the application of SPEs with NMC is limited by the narrow redox window of single SPEs and interfacial decomposition of SPEs by NMC. To overcome these challenges, a strategy is proposed utilizing a polymeric‐catholyte/‐anolyte‐composed dual‐polymer electrolyte and a cathode coating: a low voltage stable polyether works as a separator and stabilizes the interface with Li‐metal, while a high voltage stable polyoxalate functions as the catholyte and NMC particles are precoated by TiO 2 . This cell model not only widens the voltage window of the electrolyte system, but also protects the polyoxalate in the cathode from interfacial decomposition. With this strategy, cycling stability of all‐solid‐state Li‐metal/LiNi 0.6 Mn 0.2 Co 0.2 O 2 (NMC622) cells is significantly improved. Meanwhile, large volume expansions of deposited lithium on both the Li‐metal anode and the copper collector are observed, which deserve more attention in the investigation of all‐solid‐state cells.

Separator (oil production)

Fast ion conductor

Electrochemical window

10.1002/aenm.202002416

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Citations (60)

Polymer lithium-garnet interphase for an all-solid-state rechargeable battery

Nano Energy (2018)

Weidong Zhou Ye Zhu Nicholas S. Grundish Sen Xin Shaofei Wang

Stripping (fiber)

Plating (geology)

Dendrite (mathematics)

10.1016/j.nanoen.2018.09.004

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Citations (109)

Carbon-wrapped cobalt nanoparticles on graphene aerogel for solid-state room-temperature sodium-sulfur batteries

Chemical Engineering Journal (2020)

Qianru Ma Guangyuan Du Bingshu Guo Wenwen Tang Yutao Li

Carbon fibers

Reactivity

10.1016/j.cej.2020.124210

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Citations (40)

Lithium anode stable in air for low-cost fabrication of a dendrite-free lithium battery

Nature Communications (2019)

Xiaowei Shen Yutao Li Tao Qian Jie Liu Jinqiu Zhou

Abstract Lithium metal, the ideal anode material for rechargeable batteries, suffers from the inherent limitations of sensitivity to the humid atmosphere and dendrite growth. Herein, low-cost fabrication of a metallic-lithium anode that is stable in air and plated dendrite-free from an organic-liquid electrolyte solves four key problems that have plagued the development of large-scale Li-ion batteries for storage of electric power. Replacing the low-capacity carbon anode with a safe, dendrite-free lithium anode provides a fast charge while reducing the cost of fabrication of a lithium battery, and increasing the cycle life of a rechargeable cell by eliminating the liquid-electrolyte ethylene-carbonate additive used to form a solid-electrolyte interphase passivation layer on the anode that is unstable during cycling. This solution is accomplished by formation of a hydrophobic solid-electrolyte interphase on a metallic-lithium anode that allows for handling of the treated lithium anode membrane in a standard dry room during cell fabrication.

Passivation

Dendrite (mathematics)

Lithium metal

Interphase

Capacity loss

10.1038/s41467-019-08767-0

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Citations (348)

PEO/garnet composite electrolytes for solid-state lithium batteries: From “ceramic-in-polymer” to “polymer-in-ceramic”

Nano Energy (2017)

Long Chen Yutao Li Shuai-Peng Li Li‐Zhen Fan Ce‐Wen Nan

10.1016/j.nanoen.2017.12.037

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Citations (1,201)

Structurally Ordered Fe₃Pt Nanoparticles on Robust Nitride Support as a High Performance Catalyst for the Oxygen Reduction Reaction

Advanced Energy Materials (2018)

Quanbing Liu Li Du Gengtao Fu Zhiming Cui Yutao Li

Abstract The commercialization of fuel cell technologies requires a significant reduction in the amount of expensive platinum catalyst in the cathode while still maintaining high catalytic activity and stability. Herein a cost‐effective, highly durable, and efficient catalyst consisting of ordered Fe 3 Pt nanoparticles supported by mesoporous Ti 0.5 Cr 0.5 N (Fe 3 Pt/Ti 0.5 Cr 0.5 N) is demonstrated. The Fe 3 Pt/Ti 0.5 Cr 0.5 N catalyst exhibits a five‐fold increase in mass activity relative to a Pt/C catalyst at 0.9 V for the oxygen reduction reaction. More importantly, the catalyst shows a minimal loss of activity after 5000 potential cycles (9.7%). The enhanced activity of the ordered Fe 3 Pt/Ti 0.5 Cr 0.5 N catalyst, in combination with its enhanced stability, makes it very promising for the development of new cathode catalysts for fuel cells.

10.1002/aenm.201803040

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Citations (106)