主要从事介观材料相变热力学，材料表/界面科学，功能金属基复合物的制备及应用研究。在Nature Nanotechnol., Nature Mater., Nature Commun., Adv. Mater., Adv. Sci., Adv. Energy Mater., Adv. Funct. Mater., ACS Nano等SCI学术期刊上发表学术论文60余篇和受邀撰写外文书章节2章。SCI他引3200余次，单篇最高引用1000余次。H = 25。获授权美国和日本专利各1件、中国国家发明专利4件。
https://scholar.google.com/citations?user=akkjuuQAAAAJ&hl=zh-CN

10篇代表性论文：
(1). X.Y. Lang, A. Hirata, T. Fujita, M.W. Chen*, Nanoporous Metal/Oxide Hybrid Electrodes for Electrochemical Supercapacitors, Nature Nanotechnology 7 (2011) 232-236.
[Selected one of favorite figures from the Letters and Articles that are published since the launch of Nature Nanotechnology, please see Feature: Ten years in images, Nature Nanotechnology 11 (2016) 836-840]

(2). X.Y. Lang, H.Y. Fu, C. Hou, G.F. Han, P. Yang, Y.B. Liu, Q. Jiang*, Nanoporous Gold Supported Cobalt Oxide Microelectrodes for High-performance Electrochemical Biosensors, Nature Communications 4,2169 (2013).

(3). B.T. Liu, X.M. Shi, X.Y. Lang*, L. Gu, Z. Wen, M. Zhao, J.C. Li, Q Jiang*, Extraordinary Pseudocapacitive Energy Storage Triggered by Phase Transformation in Hierarchical Vanadium Oxides, Nature Communications 9 (2018) doi: 10.1038/s41467-018-03700-3.

(4). Y. Yu*, L. Gu*, X.Y. Lang*, C.B. Zhu, M.W. Chen, J. Maier, Li Storage in Three-dimensional (3D) Nanoporous Au-supported Nanocrystalline Tin, Advanced Materials 23 (2011) 2443-2447.

(5). X.Y. Lang, B.T. Liu, X.M. Shi, Y.Q. Li, Z. Wen, Q. Jiang*, Ultrahigh-power Pseudocapacitors Based on Ordered Nanoporous Heterostructures of Electron-correlated Oxides, Advanced Science 3,1500319 (2016).
https://www.materialsviewschina.com/2016/02/based-on-three-dimensional-heterostructures-of-strongly-correlated-electron-oxides-of-high-power-pseudo-capacitor/

(6). X.Y. Lang, T. Fujita, A. Hirata, M.W. Chen*, Three-dimensional Hierarchical Nanoporosity for Ultrahigh Power and Excellent Cyclability of Electrochemical Pseudocapacitors, Advanced Energy Materials 4, 1301809 (2014).

(7). X.Y. Lang, G.F. Han, B.B. Xiao, L. Gu, Z.Z. Yang, Z. Wen, Y.F. Zhu, M. Zhao, J.C. Li, Q. Jiang*, Mesostructured Intermetallic Compounds of Platinum and Non-transition Metals for Enhanced Electrocatalysis of Oxygen Reduction Reaction, Advanced Functional Materials 25, 230-237 (2015).

(8). Y.Q. Li, X.M. Shi, X.Y. Lang*, Z. Wen, J.C. Li, Q. Jiang*, Remarkably Improving Volumetric Energy and Power of 3D MnO2 Microsupercapacitors by Tuning Crystallographic Structures, Advanced Functional Materials 26, 1830-1839(2016).

(9). Y.Q. Li, J.C. Li, X.Y. Lang*, Z. Wen, W.T. Zheng, Q. Jiang*, Lithium Ion Breathable Electrodes with 3D Hierarchical Architecture for Ultra-stable and High-capacity Lithium Storage, Advanced Functional Materials 27, 1700447 (2017).

(10). J.S. Sun, Z. Wen, L.P. Han, Z.W. Chen, X.Y. Lang*, Q. Jiang*, Non-precious Intermetallic Al7Cu4Ni Nanocrystals Seamlessly Integrated in Free-standing Bimodal Nanoporous Copper for Efficient Hydrogen Evolution Catalysis, Advanced Functional Materials 28, 1706127 (2018).

(* corresponding authors)

授权发明专利：
(1). 郎兴友，侯超，赵琳琳，文子，朱永福，赵明，李建忱，蒋青，无缝集成的金属基底/纳米多孔金属/金属氧化物复合电极材料的制备方法和应用，专利号：ZL201310192869.6.

(2). 郎兴友，韩高峰，李苗苗，肖蓓蓓，文子，朱永福，赵明，李建忱，蒋青，双模式介孔铂与非过渡族金属的金属间化合物催化剂的制备方法及其应用，专利号：ZL201410114575.6.

(3). 郎兴友，韩高峰，程拓，文子，朱永福，赵明，李建忱，蒋青，过渡族金属掺杂Pt-Al金属间化合物形成双模式孔三元合金的制备方法及应用, 专利号：ZL 2015 1 0812116.X

(4). 郎兴友，刘博天，文子，朱永福，赵明，李建忱，蒋青，一种基于强关联氧化物复合电极材料的超级电容器，专利号：ZL 2015 1 0272144.7
(5). 陈明伟，郎兴友，藤田武志，Nanoporous ceramic composite metal, 美国专利, Patent number: US9336958B2.

(6). 陈明伟，郎兴友，藤田武志，纳米多孔金属/氧化物无电电镀制备方法及其超级电容器和锂离子电池, 日本专利, 专利号：6019533