Publications by Ligang Wang | EPFL Graph Search

Fuel cell-battery hybrid systems for mobility and off-grid applications: A review

Jan Van Herle, François Maréchal, Xun Liao, Ligang Wang

The global demand for fossil fuels in the transportation sector is increasing rapidly due to the continuous growth of internal combustion engine vehicles. This leads to severe environmental problems, including greenhouse gas emissions and air-quality deter ...

PERGAMON-ELSEVIER SCIENCE LTD2021

MXene Nanosheet-Based Microneedles for Monitoring Muscle Contraction and Electrostimulation Treatment

Ligang Wang

MXenes belong to a large family of two-dimensional layered transition-metal carbides and nitrides. MXene nanosheets integrate the fascinating advantages of high electronic conductivity, excellent biocompatibility, and acid/base resistance. Herein, we demon ...

AMER CHEMICAL SOC2021

Ingestible polysaccharide battery coupled with a self-charging nanogenerator for controllable disinfection system

Ligang Wang

Biomedical electronics plays a crucial role in bridging the gap between engineering and medicine by enabling the development of miniaturized medical equipment offering efficient diagnosis as wel l as treatment for various diseases. However, despite the rec ...

Elsevier2021

Triple-Mode Grid-Balancing Plants via Biomass Gasification and Reversible Solid-Oxide Cell Stack: Economic Feasibility Evaluation via Plant Capital-Cost Target

Jan Van Herle, François Maréchal, Maria del Mar Perez Fortes, Ligang Wang

Electricity production and consumption must be balanced for the electrical grid. However, the rapidly growing intermittent power sources are now challenging the supply-demand balance, leading to large flexibility needs for grid management. The plant integr ...

FRONTIERS MEDIA SA2021

Potential Deployment of Reversible Solid-Oxide Cell Systems to Valorise Organic Waste, Balance the Power Grid and Produce Renewable Methane: A Case Study in the Southern Italian Peninsula

Maria del Mar Perez Fortes, Ligang Wang

The large market penetration of non-dispatchable renewable power sources (vRES), i.e., wind and photovoltaic, may be hampered by an increasing need for large scale energy storage capacity and the challenges of balancing the power grid. Novel technologies i ...

2021

Techno-economic evaluation of biomass-to-fuels with solid-oxide electrolyzer

Jan Van Herle, François Maréchal, Ligang Wang, Hanfei Zhang

Thermochemical biomass-to-fuel conversion requires an increased hydrogen concentration in the syngas derived from gasification, which is currently achieved by water–gas-shift reaction and CO2 removal. State-of-the-art biomass-to-fuels convert less than hal ...

2020

A Review: Electrochemical Biosensors for Oral Cancer

Hubert Girault, Tzu-En Lin, Ligang Wang, Sorour Darvishi

Oral cancer poses a serious threat worldwide owing to its soaring case-fatality rate and its metastatic characteristics of spreading to the other parts of the body. Despite the recent breakthroughs in biomedical sciences, the detection of oral cancer at an ...

2020

Techno-economic optimization of biomass-to-methanol with solid-oxide electrolyzer

Jan Van Herle, François Maréchal, Maria del Mar Perez Fortes, Ligang Wang, Hanfei Zhang

The purpose of this paper is to assess techno-economically the integration of solid-oxide electrolysis in biomass-to-methanol processes: (1) The hydrogen produced by electrolysis can be used to adjust the composition of syngas from gasification to increase ...

ELSEVIER SCI LTD2020

Techno-economic comparison of green ammonia production processes

Jan Van Herle, François Maréchal, Ligang Wang, Hanfei Zhang

To reduce the fossil-fuel consumption and the impacts of conventional ammonia production on climate change, green ammonia production processes using green hydrogen need to be investigated. For commercial production scale, potential alternatives can be base ...

2020

Life cycle assessment of power-to-gas applications via co-electrolysis of CO2 and H2O

Ligang Wang

Solid-oxide electrolysis technology (SOEC) can efficiently convert electricity from renewable sources into H-2 via steam electrolysis, or syngas (a mixture of H-2 and CO2) via co-electrolysis of steam and CO2. Co-SOEC provides the advantage of better therm ...

2020

Part-load performance analysis of a combined cycle with intermediate recuperated gas turbine

Ligang Wang

In order to improve the performance of the combined cycle gas turbine (CCGT) under off-design conditions, an intermediate recuperated combined cycle gas turbine (IRCCGT) system was proposed, which was designed to suppress turbine inlet temperature (TIT) fr ...

Elsevier2020

Enhancing the operational flexibility of thermal power plants by coupling high-temperature power-to-gas

Jan Van Herle, François Maréchal, Yang Sun, Ligang Wang

The increasing penetration of intermittent renewable power challenges the stability of the electrical grid, thus coal power plants are usually required to extend the operation range by reducing the minimum load. This work proposes a concept of coupling sol ...

ELSEVIER SCI LTD2020

Reversible solid-oxide cell stack based power-to-x-to-power systems: Comparison of thermodynamic performance

Jan Van Herle, François Maréchal, Maria del Mar Perez Fortes, Tzu-En Lin, Ligang Wang, Philippe Aubin, Yumeng Zhang

The increasing penetration of variable renewable energies poses new challenges for grid management. The economic feasibility of grid-balancing plants may be limited by low annual operating hours if they work either only for power generation or only for pow ...

2020

Communication-Scanning Electrochemical Microscopy Analysis of Interleukin-6 in Oral Cancer

Hubert Girault, Ligang Wang, Sorour Darvishi

Scanning electrochemical microscopy (SECM) offers a highly sensitive and convenient approach for electrochemical mapping of interleukin-6 (IL-6), an oral cancer protein biomarker. In this study, we utilized the SECM to map the distribution of IL-6 for imag ...

ELECTROCHEMICAL SOC INC2020

Techno-Economic Optimization of CO2-to-Methanol with Solid-Oxide Electrolyzer

Jan Van Herle, François Maréchal, Ligang Wang, Hanfei Zhang

Carbon capture and utilization are promising to tackle fossil-fuel depletion and climate change. CO2 hydrogenation can synthesize various chemicals and fuels, such as methanol, formic acid, urea, and methane. CO2-to-methanol integrated with solid-oxide ele ...

2019

Trade-off designs of power-to-methane systems via solid-oxide electrolyzer and the application to biogas upgrading

Stefan Diethelm, Jan Van Herle, François Maréchal, Guillaume Jeanmonod, Ligang Wang

Solid-oxide electrolyzer based power-to-methane is promising for large-scale energy storage as well as biogas upgrading by efficiently converting intermittent renewable power and CO2 (e.g., in biogas) into synthetic methane. Either air or pure oxygen can b ...

2019

Identifying Reaction Species by Evolutionary Fitting and Kinetic Analysis: An Example of CO2 Hydrogenation in DRIFTS

Andreas Züttel, Kun Zhao, Ligang Wang, Marco Calizzi, Emanuele Moioli

Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) investigations of molecules at the surface of catalysts exhibit a strong overlap of the adsorption peaks. Therefore, the investigation of the CO2 hydrogenation on a highly active catalyst ...

2019

A Cogeneration System Based on Solid Oxide and Proton Exchange Membrane Fuel Cells With Hybrid Storage for Off-Grid Applications

François Maréchal, Maria del Mar Perez Fortes, Ligang Wang, Francesco Baldi

Solid oxide fuel cells (SOFC) have developed to a mature technology, able to achieve electrical efficiencies beyond 60%. This makes them particularly suitable for off-grid applications, where SOFCs can supply both electricity and heat at high efficiency. C ...

2019

Balancing wind-power fluctuation via onsite storage under uncertainty: Power-to-hydrogen-to-power versus lithium battery

Jan Van Herle, François Maréchal, Ligang Wang, Yumeng Zhang

Imbalance costs caused by forecasting errors are considerable for grid-connected wind farms. In order to reduce such costs, two onsite storage technologies, i.e., power-to-hydrogen-to-power and lithium battery, are investigated considering 14 uncertain tec ...

2019

Trade-off designs and comparative exergy evaluation of solid-oxide electrolyzer based power-to-methane plants

Jan Van Herle, François Maréchal, Ligang Wang

Solid-oxide electrolyzer (SOE) based power-to-methane (PtM) system can efficiently store surplus renewable power into synthesis natural gas by electrolysis and methanation. The system performance depends on the operating point of the electrolyzer and syste ...

2019