Details

Autor(en) / Beteiligte

• Wei, Chuanliang
• Fei, Huifang
• Tian, Yuan
• An, Yongling
• Zeng, Guifang
• Feng, Jinkui
• Qian, Yitai

Titel

Room‐Temperature Liquid Metal Confined in MXene Paper as a Flexible, Freestanding, and Binder‐Free Anode for Next‐Generation Lithium‐Ion Batteries

Ist Teil von

• Small (Weinheim an der Bergstrasse, Germany), 2019-11, Vol.15 (46), p.e1903214-n/a

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Exploring flexible lithium‐ion batteries is required with the ever‐increasing demand for wearable and portable electronic devices. Selecting a flexible conductive substrate accompanying with closely coupled active materials is the key point. Here, a lightweight, flexible, and freestanding MXene/liquid metal paper is fabricated by confining 3 °C GaInSnZn liquid metal in the matrix of MXene paper without any binder or conductive additive. When used as anode for lithium‐ion cells, it can deliver a high discharge capacity of 638.79 mAh g−1 at 20 mA g−1. It also exhibits satisfactory rate capacities, with discharge capacities of 507.42, 483.33, 480.22, 452.30, and 404.47 mAh g−1 at 50, 100, 200, 500, and 1000 mA g−1, respectively. The cycling performance is obviously improved by slightly reducing the charge–discharge voltage range. The composite paper also has better electrochemical performance than liquid metal coated Cu foil. This study proposes a novel flexible anode by a clever combination of MXene paper and low‐melting point liquid metal, paving the way for next‐generation lithium‐ion batteries. A flexible, freestanding, and binder‐free anode for next‐generation lithium‐ion batteries is fabricated by confining 3 °C GaInSnZn liquid metal in the matrix of MXene paper. This flexible composite paper can be folded and winded optionally without any damage. It also exhibits a high discharge capacity, enriching the family of flexible lithium‐ion batteries.