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Chengrui Wang Lei Zhang Mohammad Al‐Mamun Yuhai Dou Porun Liu Dawei Su Guoxiu Wang Shanqing Zhang Dan Wang Huijun Zhao 《Liver Transplantation》2019,9(31)
The symmetric batteries with an electrode material possessing dual cathodic and anodic properties are regarded as an ideal battery configuration because of their distinctive advantages over the asymmetric batteries in terms of fabrication process, cost, and safety concerns. However, the development of high‐performance symmetric batteries is highly challenging due to the limited availability of suitable symmetric electrode materials with such properties of highly reversible capacity. Herein, a triple‐hollow‐shell structured V2O5 (THS‐V2O5) symmetric electrode material with a reversible capacity of >400 mAh g?1 between 1.5 and 4.0 V and >600 mAh g?1 between 0.1 and 3.0 V, respectively, when used as the cathode and anode, is reported. The THS‐V2O5 electrodes assembled symmetric full lithium‐ion battery (LIB) exhibits a reversible capacity of ≈290 mAh g?1 between 2 and 4.0 V, the best performed symmetric energy storage systems reported to date. The unique triple‐shell structured electrode makes the symmetric LIB possessing very high initial coulombic efficiency (94.2%), outstanding cycling stability (with 94% capacity retained after 1000 cycles), and excellent rate performance (over 140 mAh g?1 at 1000 mA g?1). The demonstrated approach in this work leaps forward the symmetric LIB performance and paves a way to develop high‐performance symmetric battery electrode materials. 相似文献
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Metal‐Ion Batteries: Open‐Structured V2O5·nH2O Nanoflakes as Highly Reversible Cathode Material for Monovalent and Multivalent Intercalation Batteries (Adv. Energy Mater. 14/2017)
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Huali Wang Xuanxuan Bi Ying Bai Chuan Wu Sichen Gu Shi Chen Feng Wu Khalil Amine Jun Lu 《Liver Transplantation》2017,7(14)
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Open‐Structured V2O5·nH2O Nanoflakes as Highly Reversible Cathode Material for Monovalent and Multivalent Intercalation Batteries
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Huali Wang Xuanxuan Bi Ying Bai Chuan Wu Sichen Gu Shi Chen Feng Wu Khalil Amine Jun Lu 《Liver Transplantation》2017,7(14)
The high‐capacity cathode material V2O5·n H2O has attracted considerable attention for metal ion batteries due to the multielectron redox reaction during electrochemical processes. It has an expanded layer structure, which can host large ions or multivalent ions. However, structural instability and poor electronic and ionic conductivities greatly handicap its application. Here, in cell tests, self‐assembly V2O5·n H2O nanoflakes shows excellent electrochemical performance with either monovalent or multivalent cation intercalation. They are directly grown on a 3D conductive stainless steel mesh substrate via a simple and green hydrothermal method. Well‐layered nanoflakes are obtained after heat treatment at 300 °C (V2O5·0.3H2O). Nanoflakes with ultrathin flower petals deliver a stable capacity of 250 mA h g?1 in a Li‐ion cell, 110 mA h g?1 in a Na‐ion cell, and 80 mA h g?1 in an Al‐ion cell in their respective potential ranges (2.0–4.0 V for Li and Na‐ion batteries and 0.1–2.5 V for Al‐ion battery) after 100 cycles. 相似文献
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Koeun Kim Daeyeon Hwang Saehun Kim Sung O Park Hyungyeon Cha Yoon‐Sung Lee Jaephil Cho Sang Kyu Kwak Nam‐Soon Choi 《Liver Transplantation》2020,10(15)
Ni‐rich cathodes are considered feasible candidates for high‐energy‐density Li‐ion batteries (LIBs). However, the structural degradation of Ni‐rich cathodes on the micro‐ and nanoscale leads to severe capacity fading, thereby impeding their practical use in LIBs. Here, it is reported that 3‐(trimethylsilyl)‐2‐oxazolidinone (TMS‐ON) as a multifunctional additive promotes the dissociation of LiPF6, prevents the hydrolysis of ion‐paired LiPF6 (which produces undesired acidic compounds including HF), and scavenges HF in the electrolyte. Further, the presence of 0.5 wt% TMS‐ON helps maintain a stable solid–electrolyte interphase (SEI) at Ni‐rich LiNi0.7Co0.15Mn0.15O2 (NCM) cathodes, thus mitigating the irreversible phase transformation from layered to rock‐salt structures and enabling the long‐term stability of the SEI at the graphite anode with low interfacial resistance. Notably, NCM/graphite full cells with TMS‐ON, which exhibit an excellent discharge capacity retention of 80.4%, deliver a discharge capacity of 154.7 mAh g?1 after 400 cycles at 45 °C. 相似文献
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Yanyi Liu Michael Clark Qifeng Zhang Danmei Yu Dawei Liu Jun Liu Guozhong Cao 《Liver Transplantation》2011,1(2):194-202
Nanostructured V2O5 thin films have been prepared by means of cathodic deposition from an aqueous solution made from V2O5 and H2O2 directly on fluorine‐doped tin oxide coated (FTO) glasses followed by annealing at 500°C in air, and studied as film electrodes for lithium ion batteries. XPS results show that the as‐deposited films contained 15% V4+, however after annealing all the vanadium is oxidized to V5+. The crystallinity, surface morphology, and microstructures of the films have been investigated by means of XRD, SEM, and AFM. The V2O5 thin film electrodes show excellent electrochemical properties as cathodes for lithium ion intercalation: a high initial discharge capacity of 402 mA h g?1 and 240 mA h g?1 is retained after over 200 cycles with a discharging rate of 200 mA g?1 (1.3 C). The specific energy density is calculated as 900 W h kg?1 for the 1st cycle and 723 W h kg?1 for the 180th cycle when the films are tested at 200 mA g?1 (1.3 C). When discharge/charge is carried out at a high current density of 10.5 A g?1 (70 C), the thin film electrodes retain a good discharge capacity of 120 mA h g?1, and the specific power density is over 28 kW kg?1. 相似文献
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MnPO4‐Coated Li‐NCM: MnPO4‐Coated Li(Ni0.4Co0.2Mn0.4)O2 for Lithium(‐Ion) Batteries with Outstanding Cycling Stability and Enhanced Lithiation Kinetics (Adv. Energy Mater. 27/2018)
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Zhen Chen Guk‐Tae Kim Dominic Bresser Thomas Diemant Jakob Asenbauer Sangsik Jeong Mark Copley Rolf Jürgen Behm Jianyi Lin Zexiang Shen Stefano Passerini 《Liver Transplantation》2018,8(27)
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Sodium‐Ion Batteries: High Energy Density Sodium‐Ion Battery with Industrially Feasible and Air‐Stable O3‐Type Layered Oxide Cathode (Adv. Energy Mater. 5/2018)
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Jianqiu Deng Wen‐Bin Luo Xiao Lu Qingrong Yao Zhongmin Wang Hua‐Kun Liu Huaiying Zhou Shi‐Xue Dou 《Liver Transplantation》2018,8(5)
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Xiao Wang Yaguang Li Sen Wang Feng Zhou Pratteek Das Chenglin Sun Shuanghao Zheng Zhong‐Shuai Wu 《Liver Transplantation》2020,10(22)
Rechargeable aqueous zinc‐ion batteries (ZIBs) are appealing due to their high safety, zinc abundance, and low cost. However, developing suitable cathode materials remains a great challenge. Herein, a novel 2D heterostructure of ultrathin amorphous vanadium pentoxide uniformly grown on graphene (A‐V2O5/G) with a very short ion diffusion pathway, abundant active sites, high electrical conductivity, and exceptional structural stability, is demonstrated for highly reversible aqueous ZIBs (A‐V2O5/G‐ZIBs), coupling with unprecedented high capacity, rate capability, long‐term cyclability, and excellent safety. As a result, 2D A‐V2O5/G heterostructures for stacked ZIBs at 0.1 A g?1 display an ultrahigh capacity of 489 mAh g?1, outperforming all reported ZIBs, with an admirable rate capability of 123 mAh g?1 even at 70 A g?1. Furthermore, the new‐concept prototype planar miniaturized zinc‐ion microbatteries (A‐V2O5/G‐ZIMBs), demonstrate a high volumetric capacity of 20 mAh cm?3 at 1 mA cm?2, long cyclability; holding high capacity retention of 80% after 3500 cycles, and in‐series integration, demonstrative of great potential for highly‐safe microsized power sources. Therefore, the exploration of such 2D heterostructure materials with strong synergy is a reliable strategy for developing safe and high‐performance energy storage devices. 相似文献