DataVXACS Energy LettersPaper
journal article·2024-02-09

Regulating the Nanosize Effect of LiCoO2 for High-Performance Battery-Supercapacitor Hybrid Devices

Feifei Xing, Shihao Liao, Jieqiong Qin, Gongrui Wang, Shuanghao Zheng, Zhong-Shuai Wu

ACS Energy Letters· Volume 9· Issue 2
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Source abstract

Abstract

The nanosize effect in nanostructured electrode materials is significant for boosting rate performance; however, it brings about low capacity, low Coulombic efficiency, and poor stability. In this work, 2D atomically thin (001)-oriented single-crystalline LCO (SC-LCO) nanosheets with longer Li + intercalation distance and a surface dominated with (001) planes are constructed to regulate the nanosize effect. The SC-LCO not only owns large plateau region capacity even at high rate (194 mAh g –1 at 1C and 111 mAh g –1 at 50C) but also realizes remarkable improvement in the initial Coulombic efficiency (92% at 1C) and cycling stability (83% capacity retention for 500 cycles). The battery-supercapacitor hybrid devices (BSHDs) assembled with kinetics and capacity doubly matched SC-LCO and mesoporous TiNb 2 O 7 nanosheets offer high energy density (244 Wh kg –1 @ 693 W kg –1 ) and power density (15 kW kg –1 @ 151 Wh kg –1 ). Further, pouch-type full cells are assembled, demonstrating the enormous applicability of this strategy.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageNanomaterials

OpenAlex topics: Supercapacitor Materials and Fabrication · Advancements in Battery Materials · MXene and MAX Phase Materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China

University of Chinese Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing 100049, China

College of Science Henan Agricultural University, 63 Agricultural Road, Zhengzhou 450002, China

Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China

Funding

Dalian National Laboratory for Clean Energy · National Key Research and Development Program of China · Dalian Institute of Chemical Physics, Chinese Academy of Sciences · National Natural Science Foundation of China · Chinese Academy of Sciences · Yanchang Petroleum International Limited · Dalian Innovation Support Plan for High Level Talents

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