Unique Reversible Conversion-Type Mechanism Enhanced Cathode Performance in Amorphous Molybdenum Polysulfide
Source abstract
Abstract
A unique reversible conversion-type mechanism is reported in the amorphous molybdenum polysulfide (a-MoS 5.7 ) cathode material. The lithiation products of metallic Mo and Li 2 S 2 rather than Mo and Li 2 S species have been detected. This process could yield a high discharge capacity of 746 mAh g –1 . Characterizations of the recovered molybdenum polysulfide after the delithiaiton process manifests the high reversibility of the unique conversion reaction, in contrast with the general irreversibility of the conventional conversion-type mechanism. As a result, the a-MoS 5.7 electrodes deliver high cycling stability with an energy-density retention of 1166 Wh kg –1 after 100 cycles. These results provide a novel model for the design of high-capacity and long-life electrode materials.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China
Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, China
Funding
Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China · Guangdong Innovative and Entrepreneurial Research Team Progress
References (61)
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