Transition metal dichalcogenides (TMDs) have received intensive interests in lithium-ion batteries owing to their unique lithium-ion storage ability when evaluated as anode materials. In the present work, a nanocomposite of WSe₂/CMK-5 was successfully fabricated via a nanocasting route, introducing the unique structure of mesoporous carbon (CMK-5) as a nanorecator. Benefiting from a synergetic effect of WSe₂ nanosheets and mesoporous carbon, the WSe₂/CMK-5 hybrid electrode exhibited large reversible capacity, high rate performance, and excellent long-term cycling stability. For instance, a specific capacity of 490 mA h g^–1 can remain even after 600 cycles at a current density of 0.5 A g^–1.

中文翻译：

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WSe ₂ / CMK-5纳米复合材料的原位合成可充电锂离子电池，具有长期循环稳定性

过渡金属二卤化物（TMD）由于在评估为负极材料时具有独特的锂离子存储能力，因此在锂离子电池中引起了广泛关注。在目前的工作中，通过纳米浇铸路线成功制造了WSe ₂ / CMK-5纳米复合材料，并引入了介孔碳（CMK-5）的独特结构作为纳米还原剂。受益于WSe ₂纳米片和中孔碳的协同作用，WSe ₂ / CMK-5杂化电极具有大的可逆容量，高倍率性能和出色的长期循环稳定性。例如，即使在电流密度为0.5 A g ^{–1的情况下}经过600次循环，也可以保持490 mA hg ^–1的比容量。