Graphite and Cobalt Recycled from Li-Ion Batteries: A Valuable Raw Material for Oxygen Reduction Reaction Electrocatalysts
Graphite and Cobalt Recycled from Li-Ion Batteries: A Valuable Raw Material for Oxygen Reduction Reaction Electrocatalysts
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DOI：
10.1021/acs.energyfuels.3c03495
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发表时间：
2023-12
期刊：
影响因子：
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通讯作者：
Maryam Kazemi;Kerli Liivand;Mirko Prato;Petr Vacek;John Walmsley;S. Dante;Giorgio Divitini
中科院分区：
文献类型：
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作者：
Maryam Kazemi;Kerli Liivand;Mirko Prato;Petr Vacek;John Walmsley;S. Dante;Giorgio Divitini
快速发展的锂离子电池(LIB)行业正在努力寻找可行的方法来回收寿命结束的电池，以及确定回收材料的新应用。目前的研究表明，作为生产电催化剂的原材料，LiB废阳极和阴极组件的价值提高是一种很有前途的策略。从废LiBS中回收的石墨和钴(SLIB)用于制备活性高、成本低、稳定性好的非贵金属基氧还原反应电催化剂(ORR)。将SLIB石墨转变为氧化石墨，然后与Co和N共掺杂，制备了在碱性介质中起始电位为0.98V(Vs RHE)的活性ORR电催化剂。对化合物进行了广泛的表征，确定了在钴和氮的协同组合中驱动性能的关键因素。该材料成功地与19.8%的商业铂催化剂进行了基准测试，显示出类似的性能和对甲醇的卓越耐受性。已证明有能力将LiBS回收到与工业相关的电催化剂中，这将引领储能解决方案实现完全可持续的生命周期。
The rapidly growing Li-ion battery (LIB) industry is struggling to find feasible methods to recycle end-of-life batteries as well as identify new applications for the recycled materials. The current study demonstrates a promising strategy to enhance the value of the LIB waste anode and cathode components as a raw material for electrocatalyst production. Recovered graphite and cobalt from spent LIBs (SLIBs) are used to obtain active, low cost, and stable nonprecious metal-based electrocatalysts for oxygen reduction reaction (ORR). SLIB graphite has been turned into graphite oxide which is thereafter codoped with Co and nitrogen to prepare an active electrocatalyst toward ORR with the onset potential of 0.98 V (vs RHE) in alkaline media. Extensive characterization is carried out on the compound, identifying the key factor driving the performance in the synergistic combination of cobalt and nitrogen. The material was successfully benchmarked against a commercial 19.8% platinum catalyst, showing comparable performance and a superior tolerance to methanol. The demonstrated ability to recycle LIBs into industrially relevant electrocatalysts can lead the way to a fully sustainable lifecycle for energy-storage solutions.