[Wu, Yong; Xu, Ziyi; Dou, Xiaoyi; Yu, Linping; Teng, Xianggui; Zeng, Julan] Changsha Univ Sci & Technol, Hunan Prov Key Lab Mat Protect Elect Power & Tran, Changsha 410114, Peoples R China.
[Wei, Jinchao] Zhongye Changtian Int Engn Co Ltd, Res & Dev Dept, Changsha 410114, Peoples R China.
[Chen, Qizhi] Guangxi Huiyuan Manganese Ind Co Ltd, Res & Dev Dept, Laibin 546138, Peoples R China.
[Zhang, Jian] Changsha Univ Sci & Technol, Coll Automot & Mech Engn, Changsha 410114, Peoples R China.