Aluminum: An underappreciated anode material for lithium-ion batteries

Aluminum: An underappreciated anode material for lithium-ion batteries
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铝:一种被低估的锂离子电池负极材料

DOI:
10.1016/j.ensm.2019.10.027
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发表时间:
2020-03
影响因子:
20.4
通讯作者:
Li Xingguo
Li Xingguo
中科院分区:
材料科学1区
文献类型:
--
作者:
Chang Xinghua;Xie Zewei;Liu Zhiliang;Zheng Xinyao;Zheng Jie;Li Xingguo

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铝作为锂离子电池的负极材料具有优异的内在性能,但其应用还未得到充分的重视。由于Al具有较高的化学反应活性,自下而上制备Al纳米结构是非常具有挑战性的,具有高容量和良好稳定性的Al基阳极是极具挑战性的。在这项工作中,我们开发了一种等离子体方法来解决合成挑战。采用AlCl3-H2-CH4等离子体,加入少量FeCl3,在近室温下获得了均匀粒径约为40 nm的Al-Fe/C纳米复合材料。低压辉光放电等离子体产生高活性中间体,如AlCl和H自由基,这使得AlCl3在温和的条件下直接还原为金属Al。等离子体激活反应导致Al基阳极材料的性能突破,这表明Al应该更认真地考虑作为锂离子电池的有前途的候选阳极材料。
Aluminum has excellent intrinsic properties as an anode material for lithium ion batteries, while this application is significantly underappreciated. Due to the high chemical reactivity of Al, bottom-up preparation of Al nanostructures is very challenging and Al based anode with high capacity and good stability is extremely challenging. In this work, we developed a plasma method to address the synthetic challenge. Using AlCl3-H2-CH4 plasma with the addition of low amount of FeCl3, a homogeneous Al-Fe/C nanocomposite with uniform particle size around 40 nm is obtained at near room temperature. The low pressure glow discharge plasma generates highly reactive intermediates such as AlCl and H radicals, which allows direct reduction of AlCl3 to metal Al in mild conditions. The plasma enabled reaction leads to performance breakthrough of the Al based anode materials, which suggests that Al should be more seriously considered as a promising candidate anode material for LIBs.
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