Gaoping Cao
Peking University
Publications 38
#1Yuehua WenH-Index: 17
Last. Guangshi Tang (Huada: Beijing University of Chemical Technology)H-Index: 3
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Abstract Aqueous lithium ion batteries (ALIBs) receive increasing attention due to their intrinsic non-flammable nature. However, their practical application, has been limited by the poor comprehensive properties of aqueous electrolytes, which severely restricts the cycle life and cost of ALIBs. In this study, the concentration and components of aqueous electrolytes were optimized to balance the battery performance and cost of ALIBs. The wide electrochemical stability window of around 2 V is ach...
#1Yu XiangH-Index: 8
#2Wenfeng ZhangH-Index: 19
Last. Qianqian Meng (USTB: University of Science and Technology Beijing)H-Index: 3
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Abstract It is still a considerable challenge for spinel Li4Ti5O12 to achieve high tap density while retaining excellent power capability. Herein, a compact and mesopore-oriented holey-graphene framework (HGF) caging nano-Li4Ti5O12 particles (Li4Ti5O12/HGF) is synthesized by capillary shrink effect. In the capillary drying process, nano-Li4Ti5O12 particles prevent the absolute aggregation of graphene sheets, remaining mesopore-oriented porosity for rapid Li+ diffusion. After precisely adjusting ...
17 CitationsSource
#1Qianqian Meng (USTB: University of Science and Technology Beijing)H-Index: 3
#2Huimin ZhangH-Index: 8
Last. Yuepeng Guan (Huada: Beijing University of Chemical Technology)H-Index: 8
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The growth of Li dendrites and the instability of the solid electrolyte interphase (SEI) layer during plating/stripping has hindered the practical application of high-energy-density batteries based on a lithium metal anode. Building a stable interfacial layer is effective in preventing lithium corrosion by the electrolyte and controlling the deposition of lithium metal. Here, we present a robust polydopamine-Cu ion (PDA-Cu2+) coating layer formed by the aggregation of nanoparticles and Cu ions, ...
5 CitationsSource
#1Shaobo Huang (USTB: University of Science and Technology Beijing)H-Index: 4
#2Wenfeng ZhangH-Index: 4
Last. Hao ZhangH-Index: 20
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It is imperative to explore practical methods and materials to drive the development of high energy density lithium metal batteries. The constuciton of nanostructure electrodes and surface engineering on the current collectors are the two most effective strategies to regulate the homogeneous Li plating/stripping to relieve the Li dendrites and infinite volume change problems. Based on the low stacking fault energy of the Cu–Zn alloy, we present a novel chemical energy release induced surface ato...
51 CitationsSource
#1Shukai Zhang (USTB: University of Science and Technology Beijing)H-Index: 3
#2Hao ZhangH-Index: 20
Last. Yusheng Yang (USTB: University of Science and Technology Beijing)H-Index: 49
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Abstract We present a layered-carbon/PbSO4 composite additive for the negative active material (NAM) of lead-acid batteries to improve their high rate charge/discharge performance. The layered-carbon/PbSO4 composite, consisting of graphene-like two-dimensional carbon decorated with fine PbSO4 particles, is prepared by a simple chemical vapor deposition (CVD) method and a subsequent ion exchange process. In the synthesis process, potassium carbonate functions as template to promote the generation...
11 CitationsSource
#1Pengcheng ZhaoH-Index: 7
#2Yu XiangH-Index: 8
Last. Gaoping CaoH-Index: 46
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Abstract Li 5 La 3 Nb 2 O 12 (LLNO) is a typical garnet-like solid electrolyte with solitary cubic structure. However, its ionic conductivity is relatively low due to the low relative density when prepared by cold isostatic pressing method, which usually involves high-pressure machines, poor productivity, tedious pressing operations, and low density. In this paper, self-consolidation method is developed to sinter dense LLNO electrolyte. Although not any pressing operations are employed in the en...
6 CitationsSource
#1Huimin Zhang (BIT: Beijing Institute of Technology)H-Index: 8
#2Wenfeng ZhangH-Index: 19
Last. Yusheng Yang (BIT: Beijing Institute of Technology)H-Index: 9
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Abstract Hard carbon materials hold the most promising application among all anode materials for sodium-ion batteries because of the high storage capacity and good cycling stability. However, the low initial Coulombic efficiency limits their further commercialization. Herein, a new carbonization strategy is presented to prepare a cost-effective hard carbon material as anodes for sodium-ion batteries by pyrolyzing the interpenetrating polymer networks (IPNs) made from the mixture of biomass-deriv...
20 CitationsSource
#1Jie Pang (CUMT: China University of Mining and Technology)H-Index: 9
#2Wenfeng ZhangH-Index: 19
Last. Yusheng YangH-Index: 49
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Abstract Nitrogen-containing carbon sphere with hierarchical porous structure is obtained through a facile thermostabilization and carbonization method of biomass-derivative sodium lignosulfonate. The synthesis route we proposed is cost-effective and environment-friendly without additional nitrogen precursor, activation or templating agent. The as-prepared carbon spheres exhibit high specific surface area of 1255–1939 m2 g−1 and moderate surface nitrogen content of 1.14–1.66 at.%. When assemblin...
59 CitationsSource
#1Jie Pang (CUMT: China University of Mining and Technology)H-Index: 9
#2Wenfeng ZhangH-Index: 19
Last. Yusheng YangH-Index: 9
view all 7 authors...
17 CitationsSource
#1Pengcheng ZhaoH-Index: 7
#2Gaoping CaoH-Index: 21
Last. Songtong ZhangH-Index: 7
view all 9 authors...
Abstract For the preparation of high-density ceramic electrolytes, researchers prefer cold or hot isostatic pressing method, which is not cost effective because of the ultra-high pressure and poor productivity. In this paper, we present a novel “self-consolidation” method to prepare dense cubic Al-doped Li7La3Zr2O12 (LLZO) without the assist of pressing. The relative density of LLZO bulk sample is about 93–96%, and the 0.10 mol Al-doped sample with the purest cubic structure possesses the highes...
16 CitationsSource