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Self-transforming stainless-steel into the next generation anode material for lithium ion batteries

Journal of Energy Chemistry 2022年第1期31卷 432-441,I0012页

作者： Nimrod Harpak guy davidi Fernando Patolsky School of Chemistry Faculty of Exact SciencesTel Aviv UniversityTel Aviv 69978Israel Department of Materials Science and Engineering the Iby and Aladar Fleischman Faculty of EngineeringTel Aviv University.Tel Aviv 69978Israel

Here,an extremely cost-effective and simple method is proposed in order to morphologically selftransform stain less steel from a completely inactive material to a fully operati onal,nanowire-structured,3D anode material for lithium ion *** reagentless process of a single heating step of the plain stainless steel in a partially reduci ng atmosphere,converts the stain less steel into an active anode via metal-selective oxidation,creating vast spinel-structured nanowires directly from the electrochemically in active *** simple process allows the complete utilizati on of the 3D mesh structure as the electrochemically-active spinel nanowires greatly enhance the active surface *** novel material and architecture exhibits high capacities(-1000 mAh/g after-400 cycles),long cycle life(>1100 cycles)and fast rate performance(>2C).Simple modulation of the substrate can result in very high areal and volumetric ***,areal capacities greater than 10 mAh/cm^(2) and volumetric capacities greater than 1400 mAh/cm^(3) can be *** the proposed method,the potential reduction in cost from the use of battery-grade graphite is at least an order of magnitude,with considerable better results achieved in terms of capacity and intrinsic structural benefits of the substrate,which include direct contact of the active material with the current collector,lack of delamination and binder-free *** work provides a new paradigm and a key step in the long route to replace the commercial graphite anode as the next-geneation anode material.

关键词： Stainless steel Anode material Transition metal oxide Energy storage MnCr_(2)O_(4) Lithium ion batteries

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