Yimeng Huang, Yanhao Dong, Yang Yang, Tongchao Liu, Moonsu Yoon, Sipei Li, Baoming Wang, Ethan Yupeng Zheng, Jinhyuk Lee, Yongwen Sun, Ying Han, Jim Ciston, Colin Ophus, Chengyu Song, Aubrey Penn, Yaqi Liao, Haijin Ji, Ting Shi, Mengyi Liao, Zexiao Cheng, Jingwei Xiang, Yu Peng, Lu Ma, Xianghui Xiao, Wang Hay Kan, Huaican Chen, Wen Yin, Lingling Guo, Wei-Ren Liu, Rasu Muruganantham, Chun-Chuen Yang, Yuntong Zhu, Qingjie Li, Ju Li
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Integrated rocksalt–polyanion cathodes with excess lithium and stabilized cycling
Co- and Ni-free disordered rocksalt cathodes utilize oxygen redox to increase the energy density of lithium-ion batteries, but it is challenging to achieve good cycle life at high voltages >4.5 V (versus Li/Li+). Here we report a family of Li-excess Mn-rich cathodes that integrates rocksalt- and polyanion-type structures. Following design rules for cation filling and ordering, we demonstrate the bulk incorporation of polyanion groups into the rocksalt lattice. This integration bridges the two primary families of lithium-ion battery cathodes—layered/spinel and phosphate oxides—dramatically enhancing the cycling stability of disordered rocksalt cathodes with 4.8 V upper cut-off voltage. The cathode exhibits high gravimetric energy densities above 1,100 Wh kg−1 and >70% retention over 100 cycles. This study opens up a broad compositional space for developing battery cathodes using earth-abundant elements such as Mn and Fe.
Nature EnergyEnergy-Energy Engineering and Power Technology
CiteScore
75.10
自引率
1.10%
发文量
193
期刊介绍:
Nature Energy is a monthly, online-only journal committed to showcasing the most impactful research on energy, covering everything from its generation and distribution to the societal implications of energy technologies and policies.
With a focus on exploring all facets of the ongoing energy discourse, Nature Energy delves into topics such as energy generation, storage, distribution, management, and the societal impacts of energy technologies and policies. Emphasizing studies that push the boundaries of knowledge and contribute to the development of next-generation solutions, the journal serves as a platform for the exchange of ideas among stakeholders at the forefront of the energy sector.
Maintaining the hallmark standards of the Nature brand, Nature Energy boasts a dedicated team of professional editors, a rigorous peer-review process, meticulous copy-editing and production, rapid publication times, and editorial independence.
In addition to original research articles, Nature Energy also publishes a range of content types, including Comments, Perspectives, Reviews, News & Views, Features, and Correspondence, covering a diverse array of disciplines relevant to the field of energy.