Engineering Hollow Carbon Architecture for High-Performance K-Ion Battery Anode

Journal of the American Chemical Society
De-Shan BinLi-Jun Wan

Abstract

K-ion batteries (KIBs) are now drawing increasing research interest as an inexpensive alternative to Li-ion batteries (LIBs). However, due to the large size of K+, stable electrode materials capable of sustaining the repeated K+ intercalation/deintercalation cycles are extremely deficient especially if a satisfactory reversible capacity is expected. Herein, we demonstrated that the structural engineering of carbon into a hollow interconnected architecture, a shape similar to the neuron-cell network, promised high conceptual and technological potential for a high-performance KIB anode. Using melamine-formaldehyde resin as the starting material, we identify an interesting glass blowing effect of this polymeric precursor during its carbonization, which features a skeleton-softening process followed by its spontaneous hollowing. When used as a KIB anode, the carbon scaffold with interconnected hollow channels can ensure a resilient structure for a stable potassiation/depotassiation process and deliver an extraordinary capacity (340 mAh g-1 at 0.1 C) together with a superior cycling stability (no obvious fading over 150 cycles at 0.5 C).

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Citations

Oct 3, 2018·Chemical Communications : Chem Comm·Qian LiuBingan Lu
Jun 5, 2019·Angewandte Chemie·Ling FanBingan Lu
Nov 22, 2019·Angewandte Chemie·Hongchang JinLi-Jun Wan
Jan 17, 2020·Angewandte Chemie·Wenli ZhangHusam N Alshareef
Mar 13, 2020·Advanced Materials·Yuan LiuAn-Min Cao
Feb 27, 2020·Chemical Communications : Chem Comm·Wei XiongZhouguang Lu
Jan 15, 2019·Dalton Transactions : an International Journal of Inorganic Chemistry·Zifan MaAiguo Kong
May 9, 2019·Advanced Science·Wei-Chung ChangHsing-Yu Tuan
Jun 4, 2019·Advanced Materials·Jia DingDavid Mitlin
Sep 25, 2019·Research : a Science Partner Journal·Yuqian LiJiangping Tu
Oct 21, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Rujia XieXiaoyang Qiu
Dec 22, 2020·Chemical Society Reviews·Gang WangXinliang Feng
Mar 2, 2021·Journal of the American Chemical Society·Ping WangFei-Fei Cao
Jun 18, 2021·Nano-micro Letters·Jiangmin JiangJohn Wang
Jul 16, 2021·Journal of Colloid and Interface Science·Qianhui HuangChenghao Yang
Jul 24, 2021·Advanced Materials·Yonghong SongShu-Hong Yu
Jul 29, 2021·Chemistry : a European Journal·Hanbin HuYu-Fei Song
Jan 16, 2020·Chemical Reviews·Tomooki HosakaShinichi Komaba

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