【摘 要】
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Safe and long lifespan batteries facilitate the development of portable electronics and electric vehicles.Owing to the low-cost,naturally abundance,and trivalent charge carrier of aluminum with the highest theoretical volumetric capacity,rechargeable aque
【机 构】
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State Key Laboratory of Advanced Welding and Joining,Harbin Institute of Technology,Shenzhen 518055,
论文部分内容阅读
Safe and long lifespan batteries facilitate the development of portable electronics and electric vehicles.Owing to the low-cost,naturally abundance,and trivalent charge carrier of aluminum with the highest theoretical volumetric capacity,rechargeable aqueous aluminum-ion-based batteries are considered as promising next-generation secondary batteries.However,traditional electrolytes and frequent collapse of the host structure of electrode materials greatly jeopardize the cycle stability of the batteries.Here,we develop a novel hydrogel-based electrolyte coupled with stable layered intercalation electrodes for the first time to fabricate a highly safe and flexible rechargeable hybrid Al3+/H+ battery.The as-fabricated hybrid-ion battery (HIB) delivers a high specific capacity of 125 mAh·g-1 at 0.1 A·g-1 and exhibits an unprecedented super long-term cycling stability with no capacity fading over 10,000 cycles at 2 A·g-1.In addition,the hydrogel-based electrolyte possesses smart function of thermoresponsive switching,which can effectively prevent thermal runaway for the batteries.The unprecedented long cycle stability,highly intrinsic safety as well as low-cost indicate that the flexible aqueous HIBs are promising for applications.
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